Query: arduino leonardo

title: diymore Pro Micro 16MHz 5V with 2-Row Pins Header Module Board with ATmega32U4
text: From the brand Previous page diymore For diy lovers, more possibilities. We have our own meta-accessory factory. Our goal is to make high quality products for our customers, and we respect and admire diy enthusiasts who change lives and love remodeling.DIY Let the world be full of fun. Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Diymore Products Next page Product Description Read more Note: This is a plug-and-play board with the Arduino Leonardo driver. Download the Arduino software first and then plug in the motherboard to automatically install the driver. Features: The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface. This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. There is a voltage regulator on board so it can accept voltage up to DC 12V. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC. This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled. We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit. Specifications: ATmega32U4 running at 5V/16MHz Supported under Arduino IDE v1.0.1 4 x 10-bit ADC pins 12 x Digital I/Os (5 are PWM capable) On-Board micro-USB connector for programming Rx and Tx Hardware Serial Connections Read more Package Included: 1 x Pro Micro ATmega32U4 16MHz 5V 2 x Row Pins Header Read more 

title: HiLetgo BadUsb Beetle Bad USB Microcontroller ATMEGA32U4 Development Board Virtual Keyboard for Arduino Leonardo R3 DC 5V 16MHz
text: Product Description The equipment we provided for the use of the test, not for illegal purposes, or peril. Microcontroller: ATmega32u4 Clock Speed: 16 MHz Operating Voltage: 5V DC Digital I/O Pins: 10 PWM Channels: 4 Analog Input Channels: 5 UART: 1 I2C: 1 Micro USB: 1 Flash Memory: 32 KB of which 4KB used by bootloader SRAM: 2.5 KB EEPROM: 1 KB Package Included: 1 * BadUsb Beetle USB ATMEGA32U4 Development Board Module Product Description The equipment we provided for the use of the test, not for illegal purposes, or peril. Microcontroller: ATmega32u4 Clock Speed: 16 MHz Operating Voltage: 5V DC Digital I/O Pins: 10 PWM Channels: 4 Analog Input Channels: 5 UART: 1 I2C: 1 Micro USB: 1 Flash Memory: 32 KB of which 4KB used by bootloader SRAM: 2.5 KB EEPROM: 1 KB Package Included: 1 * BadUsb Beetle USB ATMEGA32U4 Development Board Module

title: KeeYees Pro Micro ATmega32U4 5V 16MHz Micro USB Development Board Module Microcontroller (Pack of 3pcs)

title: KEYESTUDIO Leonardo R3 Microcontroller Development Board with USB Cable Kit for Arduino Project
text: From the brand Previous page Keyestudio products are involved in Arduino boards, shields, sensor modules, Raspberry Pi, Microbit boards, Starter kits and Robot car. We have our own factory and professional team with more than 10 years of experience. All of our products comply with quality standards and are greatly appreciated by our customers all over the world. We keep striving our best to offer you excellent products and quality service to meet your expectation. Solar Tracking Kit New Release of KEYESTUDIO ！ Popular Robot of KEYESTUDIO New product of KEYESTUDIO Popular Boards of KEYESTUDIO Beginner-friendly starter kit Next page Product Description KEYESTUDIO Leonardo R3 Board KEYESTUDIO Leonardo R3 is an ATmega32u4 microcontroller board. The Leonardo differs from other Arduino boards using separate USB-Serial chip in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. Read more Power Supply: The board has 20 digital input/output pins (of which 7 can be used as PWM outputs), 12 analog inputs, a 16MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. The keyestudio Leonardo can be powered via the micro USB connection, or via an external power supply jack (DC 7-12V) or even with female headers Vin /GND (DC 7-12V). Memory Store: The Atmega32u4 of KEYESTUDIO Leonardo R3 Board has 32KB of flash memory for storing code (of which 4 KB is used for the bootloader), 2.5KB of SRAM and 1KB of EEPROM (which can be read and written with the Eeprom library). Board Model: Neat little Leonardo r3 board works just like the original! Another great Arduino alternative. It works fine and the quality is good. The yellow and black theme is unique. Read more Technical Specification: Microcontroller: Atmega32u4 Operating Voltage：5V Input voltage (recommended): DC7-12v Digital I/O Pins: 20 (of which 7 provide PWM output) PWM Digital I/O Pins: 7 Analog Input Pins: 12 DC Current per I/O Pin: 40mA DC Current for 3.3V Pin: 50mA Flash Memory: 32KB (ATmega32u4) of which 4KB used by boot loader SRAM: 2.5 KB (ATmega32u4); EEPROM: 1 KB (ATmega32u4); Clock Speed: 16MHz LED_BUILTIN: D13 Digital I/O pins: D0-D13 and A0-A5 (D18-D23); the ICSP pins can be used as digital pins. Analog Inputs: A0-A5, A6-A11, that is, D4 (A6)、D6 (A7)、D8 (A8)、D9 (A9)、D10 (A10) and D12 (A11) PWM pins: D3, D5, D6, D9, D10, D11 and D13. External Interrupts: D3(interrupt0);D2(interrupt1); D0 (interrupt2), D1(interrupt3), D7(interrupt4). Serial communication: D0 (RX) and D1 (TX) Read more Regarding how to use: Select the Arduino Board Open the Arduino IDE, you’ll need to click the “Tools”, then select the Board that corresponds to your Arduino. If you don't choose the correct development board type, it will cause the compilation to fail to transfer. So this is a place that needs special attention. Read more Mini Tank Robot V2 Smart Home Starter Kit 4WD Robot Car Starter Kit for Arduino DIY Solar Tracking Electronic Kit CAN-Bus Shield for Arduino KEYESTUDIO W5100 Ethernet Shield for Arduino Mega 2560 Controller R3 for Arduino ✓ ✓ ✓ ✓ ✓ ✓ Detailed tutorial ✓ ✓ ✓ ✓ ✓ 

title: Ardest Pro Micro for Arduino Leonardo Chromebook Deployments ATmega32U4 5V/16MHz Module Board with 2 Row pin Header Replace ATmega328 Arduino Pro Mini(Pack of 5)
text: Product Description If you're new to Arduino's, an Arduino UNO is your best bet to learn on. But if you're even somewhat familiar with Arduinos and want to use an Arduino board for a dedicated project then this'll do nicely. As for typical Arduino things, this pro micro board is great to use for building your own USB gamming control panel because Windows, and probably Apple, will recognize it as an HID device like a keyboard, mouse, or game controller, unlike most Arduinos. Note: 1.When you open the Arduino IDE software, pls go to the Tool and choose the board "Arduino Leonardo"as board type. Features: 1.The Pro Micro is similar to the Pro mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface 2.This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. There is a voltage regulator on board so it can accept voltage up to 9V DC. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC. 3.This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled. We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit. Specification: .ATmega32U4 running at 5V/16MHz .On-Board micro-USB connector for programming .Work with newest software from Arduino.cc .4 x 10-bit ADC pins .12 x Digital I/Os (5 are PWM capable) .Rx and Hardware Serial Connections Package includes: 5 x Arduino Pro Micro ATmega32U4 Board Had driver issues please contact via e-mail Product Description If you're new to Arduino's, an Arduino UNO is your best bet to learn on. But if you're even somewhat familiar with Arduinos and want to use an Arduino board for a dedicated project then this'll do nicely. As for typical Arduino things, this pro micro board is great to use for building your own USB gamming control panel because Windows, and probably Apple, will recognize it as an HID device like a keyboard, mouse, or game controller, unlike most Arduinos. Note: 1.When you open the Arduino IDE software, pls go to the Tool and choose the board "Arduino Leonardo"as board type. Features: 1.The Pro Micro is similar to the Pro mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface 2.This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. There is a voltage regulator on board so it can accept voltage up to 9V DC. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC. 3.This latest revision corrects the silk error from the last version of the board so that pin 14 is correctly labeled. We've also added a PTC fuse and diode protection to the power circuit and corrected the RX and TX LED circuit. Specification: .ATmega32U4 running at 5V/16MHz .On-Board micro-USB connector for programming .Work with newest software from Arduino.cc .4 x 10-bit ADC pins .12 x Digital I/Os (5 are PWM capable) .Rx and Hardware Serial Connections Package includes: 5 x Arduino Pro Micro ATmega32U4 Board Had driver issues please contact via e-mail

title: RobotDyn - Leonardo R3 ATmega32U4 with headers, Compatible for Arduino Leonardo R3 with Bootloader

title: HiLetgo 3pcs Pro Micro Atmega32U4 5V 16MHz Bootloadered IDE Micro USB Pro Micro Development Board Microcontroller Compatible to Arduino Pro Micro Serial Connection with Pin Header
text: Product Description Description: 1. The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface. 2. This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC. Features: ATmega32U4 running at 5V/16MHz Supported by Arduino IDE v1.0.1 On-Board Micro-USB connector for programming 4 x 10-bit ADC pins, 12 x Digital I/Os Rx and Tx Hardware Serial Connections Note: 1.When you open the Arduino IDE software, pls go to the tool and choose the board "Arduino Leonardo" 2.The acceptable voltage range is 5 to 9 V. Package included: 3* Pro Micro ATmega32U4 5V/16MHz Development Board Product Description Description: 1. The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface. 2. This tiny little board does all of the neat-o Arduino tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC. Features: ATmega32U4 running at 5V/16MHz Supported by Arduino IDE v1.0.1 On-Board Micro-USB connector for programming 4 x 10-bit ADC pins, 12 x Digital I/Os Rx and Tx Hardware Serial Connections Note: 1.When you open the Arduino IDE software, pls go to the tool and choose the board "Arduino Leonardo" 2.The acceptable voltage range is 5 to 9 V. Package included: 3* Pro Micro ATmega32U4 5V/16MHz Development Board

title: KOOKYE 3PCS Pro Micro ATmega32U4 5V/16MHz Module Board 2 Row Pin Header for Arduino Mini Leonardo
text: Product Description ATmega32U4 microcontroller The Pro Micro is similar to the Pro Mini except with an ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on-board and do away with bulky external USB interface. Read more Multi-channels This tiny little board does all of the neat tricks that you're familiar with: 9 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite Arduino-compatible boards but this little guy can go just about anywhere. Read more How to use Connected to computer. (If this module cannot be recognized by your computer, please install the driver) When you open the IDE software, please go to the Tool and choose the board "Leonardo". Read more Size of board Size: 17.5*32.5mm weight: about 5g Package 3x Pro Micro ATmega32U4 5V 16MHz Module USB Port Reinforced In order to prevent the interface from being damaged, this latest revision reinforced the USB port and make it more stronger solder points. Read more 

title: OSOYOO Pro Micro ATmega32U4 5V/16MHz Module Board with 2 Row pin Header Replace with ATmega328 Pro Mini for Arduino
text: Product Description Description The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface. This tiny little board does all of the neat-o for for tricks that you're familiar with: 4 channels of 10-bit ADC, 5 PWM pins, 12 DIOs as well as hardware serial connections Rx and Tx. Running at 16MHz and 5V, this board will remind you a lot of your other favorite for Arduino-compatible boards but this little guy can go just about anywhere. If you're supplying unregulated power to the board, be sure to connect to the "RAW" pin on not VCC. Read more About Pro micro Pro Micro ATmega32U4 5V 16MHz Micro-USB Development Module Boot loader IDE with 2 Row pin Header Compatible with a-rduino Leonardo Microcontroller Board Replace ATmega328 Pro Mini 1. The Pro Micro is similar to the Pro mini except with a ATmega32U4 on board. The USB transceiver inside the 32U4 allows us to add USB connectivity on board and do away with bulky external USB interface Read more Features ATmega32U4 running at 5V/16MHz Recommend power supply for board: 6-7V, less than 9V On-Board micro-USB connector for programming 4 x 10-bit ADC pins, 12 x Digital I/Os Rx and Tx Hardware Serial Connections Read more How to use Connected to computer. (If this module cannot be recognized by your computer, please refer to this link to install the driver) Opened Ard IDE and loaded Blink sketch. Set board to Leonardo and selected the appropriate COM port (It showed up in the list already identified as a Leonardo). Connected an LED to pin 9 and modified the sketch accordingly. Hit upload and within a few seconds having a blinking LED. Note: If it can't be recognized by your computer when you use it, please change another USB cable or computers to test, if still no any update, may you need to install a driver , we made a detail tutorial, you can visit: youtu.be/9k5mk-FHF24 if still not solved it, please tell us. We can definitely help you to fix the problem . Read more Details USB Port Reinforced This latest revision reinforced the USB port and make it more stronger solder points. Size of board Size: 17.5*32.5mm weight: about 4g Package 1x Pro Micro ATmega32U4 5V 16MHz Module with 2x12 pins Read more 

title: ELEGOO Mega R3 Project The Most Complete Ultimate Starter Kit w/ TUTORIAL Compatible with Arduino IDE
text: Product Description Established in 2011, ELEGOO is a thriving technology company dedicated to open-source hardware research & development, production and marketing. Our own Quality Management Team will secure the premium quality of our products and we would like to receive your valuable suggestions for our products and make your idea come true component listing: 1pcs Mega 2560 Controller Board 1pcs USB Cable 1pcs Breadboard 1pcs 65 Jumper Wire 1pcs IC 74HC595 1pcs Active Buzzer 1pcs Tilt Switch 1pcs Photo resistor 5pcs Yellow LED 5pcs Blue LED 5pcs Green LED 5pcs Red LED 1pcs RGB LED 5pcs Button (small) 10pcs Resistor (10R) 10pcs Resistor (100R) 10pcs Resistor (220R) 10pcs Resistor (330R) 10pcs Resistor (1K) 10pcs Resistor (2K) 10pcs Resistor (5K1) 10pcs Resistor (10K) 10pcs Resistor (100K) 10pcs Resistor (1M) 5pcs Female-to-male DuPont Wire. Product Description Established in 2011, ELEGOO is a thriving technology company dedicated to open-source hardware research & development, production and marketing. Our own Quality Management Team will secure the premium quality of our products and we would like to receive your valuable suggestions for our products and make your idea come true component listing: 1pcs Mega 2560 Controller Board 1pcs USB Cable 1pcs Breadboard 1pcs 65 Jumper Wire 1pcs IC 74HC595 1pcs Active Buzzer 1pcs Tilt Switch 1pcs Photo resistor 5pcs Yellow LED 5pcs Blue LED 5pcs Green LED 5pcs Red LED 1pcs RGB LED 5pcs Button (small) 10pcs Resistor (10R) 10pcs Resistor (100R) 10pcs Resistor (220R) 10pcs Resistor (330R) 10pcs Resistor (1K) 10pcs Resistor (2K) 10pcs Resistor (5K1) 10pcs Resistor (10K) 10pcs Resistor (100K) 10pcs Resistor (1M) 5pcs Female-to-male DuPont Wire.From the brand Previous page ELEGOO STEM kits provide all the necessary components, sensors, wires, and boards for you to get started with programming, learning electronics, and creating IoT projects. We strive our best to make STEM education easy to learn and accessible to the young generation. Controller Boards Visit the Store Starter Kits Visit the Store DIY Robotic Car Kits Visit the Store Next page From the manufacturer Elegoo Industries Ingenious and fun DIY electronics and Robot kits. Read more Starter kit that everyone can use to learn electronics Electronics is not as complicated as you imagine especially with ELEGOO MEGA Starter Kit. For advanced users like professional lab engineers, electronic major students and experienced hobbyists compatible with Arduino projects, they can use this kit to do various kinds of tests and experiments with so many sensors available at hand. What about novice users who don't have any electronics knowledge? Fear not amigo. Just follow our tutorial enclosed and step by step you will come to realize that learning electronics is more fun than you ever expected with this amazing sensor kit. It’s a good choice and perfect gift for your friends, family or kids who are obsessed with electronics or robotics to take their first steps on electronics journey! Read more The most complete starter Kit with high quality components and sensors Quantity and quality are both important here in Elegoo MEGA starter kit. The most essential parts in this kit are MEGA controller board and expansion board, which is a perfect clone with excellent product finish Compatible with Arduino projects. Besides, we offer other over 60 kinds of components and sensors from small parts like LED diodes, resistors and potentiometer to big parts like LCD1602, RFID module and 830 tie-points breadboard, which meet your demands for your different projects either it is simple or complex. Sturdy quality is definitely the most important thing to Elegoo even with so many components provided we never compromised on the quality. Instead we keep improving our product quality in our own factory and we produce the products by ourselves under high standards and strict quality control. Pins and wires on some of the parts like LCD16502 and motors have been pre-soldered which is very convenient and saves your time. Read more Multi-Projects you can do with this kit LCD1602 Display module LCD1602 module is a display that has an LED backlight and can display two rows with up to 16 characters on each row. You can see the rectangles for each character on the display and the pixels that make up each character. The display is just white on blue and is intended for showing text. Lining up the display with the top of the breadboard helps to identify its pins without too much counting, especially if the breadboard has its rows numbered with row 1 as the top row of the board. Do not forget, the long yellow lead that links the slider of the pot to pin 3 of the display. The 'pot' is used to control the contrast of the display. DC Motors and L293D Transistor In this project you will learn how to control a small DC motor using a Mega board and a L293D transistor, which is a very useful chip. It can actually control two motors independently. We are just using half the chip in this lesson, most of the pins on the right hand side of the chip are for controlling a second motor. L293D is quadruple high-current half-H drivers and designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is also designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V and drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as other high-current/high-voltage loads in positive-supply applications. 74HC595 Shift Register and LEDs 74HC595 is a Serial to Parallel Converter which has eight outputs (perfect) and three inputs that you use to feed data into it a bit at a time. This chip makes it a little slower to drive the LEDs (you can only change the LEDs about 500,000 times a second instead of 8,000,000 a second) but it's still really fast, way faster than humans can detect, so it's worth it! 74HC595 shift register is a type of chip that holds what can be thought of as eight memory locations, each of which can either be a 1 or a 0. To set each of these values on or off, we feed in the data using the 'Data' and 'Clock' pins of the chip. Read more ELEGOO Penguin Bot Biped Robot Kit ELEGOO Tumbller Self-Blancing Robot Car Kit Compatible with Arduino Elegoo UNO Project Smart Robot Car Kit V 4.0 Elegoo UNO Project Super Starter Kit with Tutorial Compatible with Arduino Elegoo UNO R3 Project Complete Starter Kit ELEGOO Upgraded 37 in 1 Sensor Modules Kit with Tutorial Controller board NANO NANO UNO R3 UNO R3 UNO R3 UNO R3, Mega Compatible with Arduino ✓ ✓ ✓ ✓ ✓ ✓ 

title: ELEGOO UNO Project Super Starter Kit with Tutorial and UNO R3 Compatible with Arduino IDE
text: Product Description Established in 2011, ELEGOO is a thriving technology company dedicated to open-source hardware research & development, production and marketing. Our own Quality Management Team will secure the premium quality of our products and we would like to receive your valuable suggestions for our products and make your idea come true. 100% Compatibility with Official Arduino Software, Sendsors and Codes Arduino is an open-source platform used for building electronics projects. Arduino consists of both a physical circuit board (often referred to as a microcontroller) and a piece of software, or IDE (Integrated Development Environment) that runs on your computer, used to write and upload computer code to the physical board. For the reason of open source, the manufacture of Arduino boards and software distribution by anyone is permitted. Arduino boards are available commercially in preassembled form, or as do-it-yourself (DIY) kits. Elegoo is one of the manufacturer on the market, whose clone products are 100% compatible with the official Arduinomicrocontroller boards, they can use the official Arduino software, sensors and codes. Read more Learn Electronics with Arduino The Arduino boards can be used as the brains behind almost any electronics project. Arduino can interact with buttons, LEDs, motors, speakers, GPS units, cameras, the internet, and even your smart-phone or your TV! By connecting the Arduino board with a personal computer via a USB cable and uploading to the board, users can create digital devices and interactive objects that can sense and control objects in the physical and digital world like robots or even honest fortune-telling machines. For this Elegoo Super Starter Kit, we provide a 24-lesson tutorial, introducing the basic setting of the Arduino software IDE, the working principles of the sensors to enable the UNO board to control the sensors. This Kit is suitable for 10-year-old and up. Younger kids should be under supervision and guidance of adults. Read more 74HC595 and LEDs 74HC595 is a Serial to Parallel Converter which has eight outputs (perfect) and three inputs that you use to feed data into it a bit at a time. This chip makes it a little slower to drive the LEDs (you can only change the LEDs about 500,000 times a second instead of 8,000,000 a second) but it's still really fast, way faster than humans can detect, so it's worth it. 74HC595 shift register is a type of chip that holds what can be thought of as eight memory locations, each of which can either be a 1 or a 0. To set each of these values on or off, we feed in the data using the 'Data' and 'Clock' pins of the chip. 4 digit 7 segment display 7 segment displays consist of 7 LEDs, called segments, arranged in the shape of an “8”. Most 7-segment displays actually have 8 segments, with a dot on the right side of the digit that serves as a decimal point. When using 4-digit 7-segment display, the common anode or common cathode pin is used to control which digit is displayed. Even though there is only one digit working, the principle of Persistence of Vision enables you to see all numbers displayed because each the scanning speed is so fast that you hardly notice the intervals. By building the circuit, users can make a simple display showing certain numbers, or more complexly, a count-up timer or a elecrical rolling dice. Stepper Motor Stepper motors are DC motors that move in discrete steps. They have multiple coils that are organized in groups called "phases". By energizing each phase in sequence, the motor will rotate, one step at a time. With a computer controlled stepping you can achieve very precise positioning and/or speed control. For this reason, stepper motors are the motor of choice for many precision motion control applications. the simplest way of interfacing a unipolar stepper motor to Arduino is to use a breakout for ULN2003A transistor array chip, applying voltage to each of the coils in a specific sequence. Read more Component listing: 1pcs UNO R3 Controller Board; 1pcs LCD1602 Module ( with pin header); 1pcs Breadboard Expansion Board; 1pcs Power Supply Module WARNING: Pls. do not use the voltage higher than 9V 1pcs Joystick Module; 1pcs IR Receiver; 1pcs Servo Motor (SG90); 1pcs Stepper Motor; 1pcs ULN2003 Stepper Motor Driver Board 1pcs Ultrasonic Sensor; 1pcs DHT11 Temperature and Humidity Module; 1pcs 9V Battery with DC; 1pcs 65 Jumper Wire 1pcs USB Cable; 1pcs Active Buzzer; 1pcs Passive Buzzer; 1pcs Potentiometer; 1pcs 5V Relay 1pcs Breadboard; 1pcs Remote; 1pcs Tilt Switch; 5pcs Button (small); 1pcs 1 digit 7-segment Display; 1pcs 4 digit 7-segment Display 5pcs Yellow LED; 5pcs Blue LED; 5pcs Green LED; 5pcs Red LED; 1pcs RGB LED 2pcs Photoresistor; 1pcs Thermistor; 2pcs Diode Rectifier (1N4007); 2pcs NPN Transistor (PN2222) 1pcs IC 74HC595; 120pcs Resistor; 10pcs Female-to-male Dupont Wire ELEGOO Arduino Project,Penguin Bot Arduino Robot Kit with Assembling Tutorial ELEGOO UNO Project Smart Robot Car Kit V 3.0 ELEGOO Mega 2560 Project The Most Complete Ultimate Starter Kit ELEGOO UNO R3 Project Complete Starter Kit ELEGOO Upgraded 37 in 1 Sensor Modules Kit with Tutorial ELEGOO 120pcs Multicolored Dupont Wire Control board NANO UNO MEGA UNO UNO/MEGA 

title: Qunqi Leonardo R3 Development Board Microcontroller ATmega32u4 for arduino + USB Cable
text: Product Description Specification: 1. Controller: ATmega32u4 2. goods recorded: 16 MHz 3. Operating voltage: 5V 4. Input Voltage (recommended) :7-12V 5. Digital IO port: 22 (D0-D13, D14-MISO D15-SCK, D16-MOSI D18-23 [A0-A5) 6. PWM channel: 7 (D3, D5, D6, D9, D10, D11, D13) 7. analog input: 12 (A0-A5, D4-A6, D6-A7, D8-A8 ,-A9 D9, D10-A10, D12-A11) 8. 5V digital / analog port maximum permissible current: 40 mA 9. 3.3V digital / analog port maximum permissible current: 50 mA 10. Flash Memory: 32 KB (ATmega32u4) of which 4 KB used by the bootloader 11. SRAM: 2.5 KB (ATmega32u4) 12. EEPROM: 1 KB (ATmega32u4 Package include: 1x Board 1x Cable 

title: Gowoops Micro Board, Leonardo Mini Controller 5V 16 MHz ATmega32u4 Module
text: Product Description ★Micro Board for Arduino is a mini controller based on Atmega32U4. ★Micro Board for Arduino has 20 input output pins(7 PWM output and 12 analog input). ★Due to super small zise,Micro Board for Arduino is intergrated to mini breadboard very easily. ★Owning to Atemga32U4, Micro Board for Arduino can realize USB communications and control as the same as Leonard board for Arduino. This innovative design decrease the cost. ★The characteristics of ecological USB supporting in Atmega32u4 can also make Micro Board for Arduino to simulate mouse and keyboard, greatly improving the application. Features: Microcontroller: ATmega32u4 Clock Speed: 16 MHz Operating voltage: 5V Input voltage: 7-12V (recommended) Digital IO ports: 20 PWM channels: 7 Analog inputs: 12 Each I/O DC output capacity: 20 mA 3.3V port output capability: 50 mA Flash Memory:32 KB (ATmega32u4) (4 KB for bootloader) SRAM:2.5 KB (ATmega32u4) EEPROM:1 KB (ATmega32u4) Package include: 1 x Micro Board for Arduino ATmega32u4 Leonardo Mini Product Description ★Micro Board for Arduino is a mini controller based on Atmega32U4. ★Micro Board for Arduino has 20 input output pins(7 PWM output and 12 analog input). ★Due to super small zise,Micro Board for Arduino is intergrated to mini breadboard very easily. ★Owning to Atemga32U4, Micro Board for Arduino can realize USB communications and control as the same as Leonard board for Arduino. This innovative design decrease the cost. ★The characteristics of ecological USB supporting in Atmega32u4 can also make Micro Board for Arduino to simulate mouse and keyboard, greatly improving the application. Features: Microcontroller: ATmega32u4 Clock Speed: 16 MHz Operating voltage: 5V Input voltage: 7-12V (recommended) Digital IO ports: 20 PWM channels: 7 Analog inputs: 12 Each I/O DC output capacity: 20 mA 3.3V port output capability: 50 mA Flash Memory:32 KB (ATmega32u4) (4 KB for bootloader) SRAM:2.5 KB (ATmega32u4) EEPROM:1 KB (ATmega32u4) Package include: 1 x Micro Board for Arduino ATmega32u4 Leonardo Mini

title: Arduino A000057 Leonardo with Headers
text: Product Description The Arduino leonardo is a controller board based on the atmega32u4 (data sheet). it has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a Micro USB connection, a power jack, an icsp header, and a reset button. It contains everything needed to support the controller; simply connect it to a computer with a USB cable or power it with a ac-to-dc adapter or battery to get started. Product Description The Arduino leonardo is a controller board based on the atmega32u4 (data sheet). it has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a Micro USB connection, a power jack, an icsp header, and a reset button. It contains everything needed to support the controller; simply connect it to a computer with a USB cable or power it with a ac-to-dc adapter or battery to get started.From the manufacturer About us We've helped millions of customers from businesses to educational institutions to hobbyists and along the way we're proud to have built a solid reputation for great prices, great selection, and a great source for hard-to-find electronic components. Jameco has more than 45 years of consistent, profitable operation. The company was founded in 1974 in Silicon Valley by Dennis Farrey, who was committed to bringing his customers great values in electronic components. This commitment still holds true today. Jameco's first promotion was a 1/3-page advertisement in Radio Electronics. 

title: Arduino Leonardo with Headers [A000057]
text: Product Description Arduino Products Browse the full range of official Arduino products, including Boards, Modules (a smaller form-factor of classic boards), Shields (elements that can be plugged onto a board to give it extra features), and Kits. Read more What makes Arduino products special Continuous attention to User Experience High quality manufacturing & testing process : All products are assembled in Italy, following highest EU standards. End to end security for IoT : From hardware cryptography to cloud Best in class communication technology: We use high quality communication modules Quality standards : We comply with the highest quality standards and pursue modern design approaches Customer support: We take care of our customers and provide several portals for communication and knowledge-sharing Read more BOARD FAMILIES MKR The ideal solution for emerging battery powered IoT edge applications. NANO A tiny footprint, powerful processors and excellent reliability. PRO Arduino’s series of high performance industry-rated boards. Read more 

title: ELEGOO MEGA R3 Board ATmega 2560 + USB Cable Compatible with Arduino IDE Projects RoHS Compliant
text: Product Description We have the manufacture factory, making productions and selling by ourselves. So we can control the quality of our productions by ourselves for you. We'd like to receive your valuable suggestions for our products and make your idea come true. This version is optimized in the original version, mainly for customers under the functional requirements for product quality and high case designed both to ensure consistent and compatible with the original, but also easy to use. Microcontroller: ATmega+2560 Compatible with Arduino IDE Operating Voltage: 5V Input: Voltage(recommended) : 7-12V Input Voltage (limits) : 6-20V Digital I/O Pins: 54 (of which 15 provide PWM output) Analog Input Pins: 16 DC Current per I/O Pin: 40 mA DC Current for 3. 3V Pin: 50 mA Flash Memory: 256 KB of which 8 KB used by bootloader SRAM: 8 KB EEPROM: 4 KB Clock Speed: 16 MHz Package includes: 1 x Mega R3 2560 ATmega+2560-16AU Board (Arduino-compatible) 1 x USB cable Product Description We have the manufacture factory, making productions and selling by ourselves. So we can control the quality of our productions by ourselves for you. We'd like to receive your valuable suggestions for our products and make your idea come true. This version is optimized in the original version, mainly for customers under the functional requirements for product quality and high case designed both to ensure consistent and compatible with the original, but also easy to use. Microcontroller: ATmega+2560 Compatible with Arduino IDE Operating Voltage: 5V Input: Voltage(recommended) : 7-12V Input Voltage (limits) : 6-20V Digital I/O Pins: 54 (of which 15 provide PWM output) Analog Input Pins: 16 DC Current per I/O Pin: 40 mA DC Current for 3. 3V Pin: 50 mA Flash Memory: 256 KB of which 8 KB used by bootloader SRAM: 8 KB EEPROM: 4 KB Clock Speed: 16 MHz Package includes: 1 x Mega R3 2560 ATmega+2560-16AU Board (Arduino-compatible) 1 x USB cableFrom the brand Previous page ELEGOO STEM kits provide all the necessary components, sensors, wires, and boards for you to get started with programming, learning electronics, and creating IoT projects. We strive our best to make STEM education easy to learn and accessible to the young generation. Controller Boards Visit the Store Starter Kits Visit the Store DIY Robotic Car Kits Visit the Store Next page From the manufacturer ELEGOO Mega R3 ELEGOOO Mega R3 is an ATmega+2560 micro-controller board. It would be an intelligent choice of board for 3D printers, robotics projects and more other projects with 54 digital I/O pins (of which 15 can be used as PWM outputs), 16 analog inputs and a larger space for your sketch. Read more Product Details Extra Points: Besides the 54 digital I/O pins and 16 analog inputs, it also has 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It provides everything needed to support the micro-controller. You will simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started. Simplification and Security: The ATmega+2560 on the Elegoo Mega comes preprogrammed with a bootloader that allows you to upload new code to it without the use of an external hardware programmer. The Mega R3 has a re-settable fuse that protects your computer's USB ports from shorts and over-current. Although most computers provide their own internal protection, the fuse provides an extra layer of protection . If more than 500 MA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed. Memory Store: The ATmega+2560 of ELEGOO Mega R3 Controller Board has 256 KB of flash memory for storing code (of which 8 KB is used for the bootloader), 8 KB of Spram and 4 KB of EEPROM (which can be read and written with the Eeprom library). Read more Diverse Power Methods: The ELEGOO Mega R3 can be powered via the USB connection or with an external power supply. The power source is selected automatically. External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the GND and Vin pin headers of the POWER connector. Read more Technical Specification: Microcontroller: ATmega+2560 Operating Voltage: 5V ; Input: Voltage (recommended):7-9V Digital I/O Pins: 54 (of which 15 provide PWM output) Analog Input Pins: 16 DC Current per I/O Pin: 40 mA ; DC Current for 3.3V Pin: 50 mA Flash Memory: 256 KB of which 8 KB used by bootloader SRAM: 8 KB EEPROM: 4 KB Clock Speed: 16 MHz LED_BUILTIN: 13 Length: 101.5 mm Width: 53.3 mm Weight: 34 g Read more ELEGOO Penguin Bot Biped Robot Kit ELEGOO Tumbller Self-Blancing Robot Car Kit Compatible with Arduino ELEGOO UNO Project Smart Robot Car Kit V 4.0 Compatible with Arduino Elegoo UNO R3 Project Complete Starter Kit with Tutorial Compatible with Arduino Elegoo Mega Project The Most Complete Starter Kit w/Tutorial Elegoo UNO Project Super Starter Kit with Tutorial Compatible with Arduino Controller Board NANO NANO UNO R3 UNO R3 MEGA UNO R3 Compatible with Arduino ✓ ✓ ✓ ✓ ✓ ✓