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I have two quaternions that indicate the initial orientation of a four wheel robot, each one in relative to one reference systems.
The robot's orientation given by a quaternion q is not the same in the two reference systems: For one reference system the quaternion q1 might refer to the robot looking at positive x whil... |
I'm building a motion detection and object recognition camera with feedback control for a hexy robot. Fortunately most of the servo control is handled by the analog servo controls and the high-level logic can be implemented in python on a raspberry pi. What's the right combination of python modules to implement:
a dae... |
Are there any decent python numerical package libraries besides numpy for python? Numpy relies on gfortan which itself must be compiled correctly for your platform to avoid hidden/insidious numerical errors in numpy.
I need a matrix algebra package to do kinematics, path planning, and machine learning in python that i... |
Shall I filter (kalman/lowpass) after getting the raw values from a sensor or after converting the raw values to a usable data? Does it matter? If so, why?
Example:
Filter after getting raw values from IMU
or
filter after converting raw values to a usable data eg. flight dynamics parameters.
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The definition of a robot is as follow: "A robotic paradigm can be described by the relationship between the three primitives of robotics: Sense, Plan, and Act."
An example could be the famous "Kuka Robots". The Kuka robot is preprogrammed and does mainly one loop over and over again. Some of them could have measuremen... |
I am trying to implement a mechanism to make robots avoid being too close (Say in a distance less than d). I am not familiar with those systems and I have to implement a strategy to avoid robots being too close to each other. Could anyone recommend me some readings for such a problem or a set of keywords to search for?... |
I was looking up the motor parameters for some stepper motor where they listed the torque of the motor at different current/voltage but the torque they listed was in kg/cm.
How is kg/cm even a remotely acceptable unit for torque?
How do I calculate the torque in Nm from kg/cm?
Clarity note: Its not kgcm which represent... |
I am currently reading into the topic of stereo vision, using the book of Hartley&Zimmerman alongside some papers, as I am trying to develop an algorithm capable of creating elevation maps from two images.
I am trying to come up with the basic steps for such an algorithm. This is what I think I have to do:
If I have tw... |
And if so, what was the highest score so far?
Some news articles suggest only parts of tests were aced.
Update since people censored this question and closed it. There was an AI that has taken an IQ test and scored similar to a 4 year old.
http://phys.org/news/2015-10-ai-machine-iq-score-young.html
The AI system whic... |
From an old dust buster I've got this electro motor, the included battery pack and the charger:
I ripped everything apart (the dust buster was broken) and the motor still works. After playing around with it for a while and letting it lying around for about two weeks it suddenly revs a lot slower. I supposed the batte... |
I am trying to find a joint like these for a robot I'm building. It is often called a swivel joint or a universal joint, but with a modified spider. I can't find one anywhere and would prefer not to make it. Searching for 'universal joint' returns the standard automotive type. Any help would be appreciated
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This is a follow-up to this question: Prototyping a device with 25-100 small DC 3.0V motors, is Arduino a good fit?
I've decided based on the answer that sending the control signals through multiple TLC5947 chips, then sending the PWM signal to the motors is the best way to go. What I need to know is how to turn the ... |
I'm trying to handle food grains like rice, wheat in an automated way (to cook simple dishes). For this I have to transfer grain from a larger container to a weighing scale. I know I can use solenoid valves for liquids but all solid handling valves seem to be too big (gate valves etc) and for larger applications. Is th... |
The dynamic programming algorithm refers to the Bellman equation. An open-loop control decides movement at the initial point while a closed-loop control decides control during the movement. Now most robotic application looks like closed-loop control: in every point, it checks how it is doing with respect to some reward... |
FPGA has good points such as a lot of IO points but then again you need to think things on very low level with flip-flops and pioneer on areas where things are not yet mature -- for example see this question here about development-tools on FPGAs -- this is my understanding currently! Now FPGA has been used to create ex... |
Some vector math is involved here so prepare yourself.
I am developing a robotic arm that moves in two dimensions. It is a rotary-rotary design which looks roughly like the picture in this post:
Building Robotic arm joint
I am now trying to limit the speed of the end-effector. I am using Simulink and believe that the... |
I have an old gamecube that doesn't work and I want to gut it and fill it with Arduino boards and/or Raspberry Pi if necessary. I want the project to eventually have some kind of AI aspect, but I'm also toying with the idea of using a wireless GameCube remote and wavebird to issue commands at the push of a button.
I... |
I'm building a quadcopter and I've seen that a Li-Po battery must not be entirely discharged, otherwise it could damage it.
How do you know when you have to stop your quadcopter or robot in order to prevent damages, since the voltage doesn't drop? Which part should control the battery charge? ESCs? BEC? Flight controll... |
I'm building an arduino controlled pump system to be able to move fluids around. I need this to be fairly accurate, but extreme precision isn't required. Since there will be a variety of liquids moved through the pump, I've determined a peristaltic pump the best fit. But I don't think I fully understand them, and had a... |
I'm starting out with Gazebo (1.5) at the moment and am following a tutorial off the internet. In order to get Gazebo to find the model, the author advocates manually exporting the GAZEBO_MODEL_PATH environment variable via
export GAZEBO_MODEL_PATH=[...]/models:$GAZEBO_MODEL_PATH
But that will only work for the curre... |
See the video below of my balancing robot.
Balancing robot
I was having trouble getting it to balance on hard surfaces but finally got it after playing with the PID gains a lot. Previously it was balancing just fine on carpet.
I set the PID gains by just picking a Kp, then increasing Ki until the robot oscillated ve... |
In a quadrotor we need to change each motor's speed depends on its position in space. More frequency will result more stability ( I mean if we can change motor's speed 400 times per second instead of 100 times per second we may stabilize our UAV quadrotor far better ).
Now my question targeting people who made a UAV qu... |
I need a microcontroller that can process minimum 2mb data per second.
How do I determine what processors will be able to do this?
Also how can I calculate the processing speed in per second of any microcontroller?
I am very much scared with my college project and I need help.
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I read many sources about kalman filter, yet no about the other approach to filtering, where canonical parametrization instead of moments parametrization is used.
What is the difference?
Other questions:
Using IF I can forget KF,but have to remember that prediction is more complicated link
How can I imagine uncerta... |
I want to fuse objects coming from several sensors, with different (sometimes overlapping!) fields of view. Having object lists, how can I determine whether some objects observed by different sensors are in fact the same object? Only then I can truly write an algorithm to predict future state of such an object.
From l... |
These days, one often hears of cyber-physical systems. Reading on the subject, though, it is very unclear how those systems differ from distributed and/or embedded systems. Examples from Wikipedia itself only make them look more like traditional distributed systems. For example:
A real-world example of such a system i... |
I'm planning on programming a prebuilt robot to solve a maze as fast as possible. The robot has forward obstacle sensors (no side sensors) and 3-axis accelerometer. I'm planning on using the wall following algorithm. Is this the fastest possible algorithm? Also, since there are no side sensors, the robot needs to c... |
I am looking for A3 size poster of Mars Exploration Rover Spirit/Opportunity for robotic education.
www.sunstartoys.com gives a little postcard-size of the MER along with its components on board when you buy the toy. But this is not large enough for classroom purpose.
Does anyone know where to buy A3 size poster of th... |
I'm a newbie in robotics, and I'm doing a project on dynamic Braille interface. Basically it's a 8*8 array of pins, which can be either totally up or down. How to use least motor as possible?
I'm thinking of using Arduino for easy interface with computer.
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I am looking for a specific name of the wire used for the robotic arm movement control and where can I find some of this online. I want to control it using the micro controller so please suggest some good development kit.
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We have an air bearing for a planar xy motion. Today it consists of four pockets according to picture.
In the current design there are no sealings around the peripheries of the pockets and we suspect that is the reason we get vibrations.
In the current design we control the pressure, same for all for recesses. The flo... |
I would like to prevent a shaft from being pulled through it's bearings - that is, press a plastic ring around it on either side. What are these rings called? They're not bearings or hubs. And where can I find them?
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I have a 9 channel RF RX/TX and want to connect 3 motors to it. I am able to connect channel 1 with motor 1 but unable to connect channel 2 with motor 2 simultaneously with arduino.
Here is the code I am currently using:
int motor1Left = 7;// defines pin 5 as connected to the motor
int motor1Right= 9;// defines pin 6 ... |
Today was my quadcopter's first "flight". I'm running megapirate on a Crius AIOP v2 with a Turnigy Talon v2 frame.
I only touched the throttle stick on my remote, nothing else. When I felt the quadcopter was about to take off, I pushed the throttle just a little bit more, and the quadcopter oscillated 2 or 3 times and ... |
I have a small device that's picking up small rocks from a pile and moving them to another place. Its a kind of crude way of trying to push the whole pile onto a bigger gear and hoping one of them is pushed to one of the spaces between gears and taken around and falls off on the other side of the spinning gear. Here I ... |
In order to build and operate a space elevator moving crafts and people into space, there are two big challenges that have not been solved yet:
Finding a cable with enough tensile strength,
Moving stuff along the cable at a reasonnable speed.
Apart from those two ones, what are the other technical challenges to solve... |
This is part two of my larger robot, it follows up what happens with the small rocks here: What kind of sensor do i need for knowing that something is placed at a position?
Now i am taking the rocks down a tube for placement. In the case they need to be altered so they always will stand up before they enter the tube. O... |
Imagine a "drone" and a target point on a 2d plane. Assuming the target is stationary, there are eight parameters:
P = my position
Q = target's position
V = my velocity
I = my moment of inertia
w = my angular velocity
s = my angular position
T = max thrust
U = max torque
The drone's job is to get to the target as fast... |
We are using ArduIMU (V3) as our Quadrotor's inertial measurement unit. (we have a separate board to control all motors, not with ArduIMU itself).
As mentioned here , the output rate of this module is only at about 8hz.
Isn't it super slow to control a quadrotor ? I'm asking because as mentioned in this answer a quad... |
I'm in the planning stages for a project using the Arduino Uno to control 8 distance sensors, and have run into a little road block, the Uno only has six input pins. So I'm wondering, is there any way for this to work? If so, how?
|
I have a robot with two wheels/motors and each has a quadrature encoder for odometry. Using the wheel/motor/encoder combo from Pololu, I get 48 transition changes per rotation and my motors give me a max of 400RPM. I've found it seems to miss some of the encoder state changes with the Pololu wheel encoder library.
Wo... |
I would like to create an Arduino based robot with 2 wheels, quadrature encoders on each wheel, a H-bridge driver chip (or motor controller) and a caster. I want to use the PID library to ensure the speed is proportional to the distance to travel.
At a conceptual level, (assuming the motors do not respond identicall... |
How does rocker-bogie mechanism keep the body flat / keep the solar panel almost flat all the time? I know there is an differential system that connect both rocker bogie (left and right) together. But how does it actually work?
Edited: Please provide relevant references.
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So I have a quadrocopter, it does come with a remote but I intend to run certain modifications to the copter, like installing a camera, a mechanical manipulator, and other random modifications. The remote that comes with the copter isn't flexible enough to help with such functions and plus it lacks any more buttons.
I... |
Expanding upon the title, I am querying the use of robotic skeletons to augment human strength and speed. If such a robot had the capacity for example to bear weight 5 times heavier than the wearer and move its robotic limbs twice as fast as the wearer, is there not a danger because such powerful and sharp movements co... |
While doing a literature review of mobile robots in general and mobile hexapods in particular I came across a control system defined as "Task level open loop" and "Joint level closed loop" system.
The present prototype robot has no external sensors by
which its body state may be estimated. Thus, in our simulations a... |
I have tried following a number of guides on the internet but most of them fall down as libfreenect does not exist in opkg, which is the apt-get of Angstrom. Has anyone got it working and if so what is the method?
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I've been watching too much How It's Made, and I've been wondering how they build devices that spray/inject/dispense a finite amount of liquid (to within some amount of error). I wanted to try this for a hobby project. I'm working on that dispenses dry goods in the amount I specify.
Do I use some kind of special nozzl... |
The latest OSX documentation I found on the website is from 2011, and the latest build is from over a year ago. I'm a complete n00b to all things ROS and wanted to start playing with it. What is the easiest way?
Edit: this version of the installation instructions is more recent (April 2013), but it says that
OSX is no... |
Let's think of the following situations:
You are teaching a robot to play ping pong
You are teaching a program to calculate square root
You are teaching math to a kid in school
These situations (i.e. supervised learning), and many others have one thing (among others) in common: the learner gets a reward based on its ... |
How can I detect when a stepper motor has stalled?
A google search led me to some people who say that
when the stepper motor stalls, the current spikes up,
which is easily detectable with a Hall sensor.
(Or, I suppose, by any of the other current sensors mentioned at
"How can I sense the motor's current?"
).
However, I... |
I bought my kid a robotics kit with several motors and an infrared remote control (you can steer the robot using IR remote control).
Now I want to take it to the next level and control the robots from a PC or a Raspberry Pi.
What is the simplest approach to do this?
I am thinking about 2 possible ways:
Find out the pr... |
I have a three wheeled vehicle in a tricycle configuration attached to a fixed frame. Each wheel is powered by an AC electric motor. The AC motors are fed by motor controllers that take a speed demand. The single main wheel (which is also steerable) has a lower gear ratio than the rear wheels so it has a theoretical hi... |
I am developing a robot which paints using an airbrush (3D painting). I intend to use several colors as a CMYK printer, but I do not know how to do the conversion of RGB colors in the computer to the dosage of colors in CMYK.
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I am interested in building a robot like the EZ-B, sold by ez-robot.com. It comes with an SDK for Visual Studio and has direct scripting in runtime through a USB, Bluetooth, Wi-Fi, IRC or HTTPS connection.
If I get a regular Arduino board, will I be able to control it remotely in the same way? From what I've read, an A... |
I noticed that some IMU units are tuned to be sensitive to small changes, other to large changes and some that can be adjusted between different sensitivities. I am familiar with the use of a Kalman filter to normalize readings, but I was wondering if my UAV could benefit from a second IMU where the two are set at high... |
I have arduino code for operating 2 servos, but we are using 4 servos and am having trouble getting the other 2 to talk.
The program so far as I can make out is that the angles for the servos that are calculated by the processing side are being sent out one after the other (shoulder, elbow, wrist, wrist2) then repeate... |
Concerning robots which rotate at high speed by spinning the drive motors in opposite directions, while still being able to simultaneously move in a direction (translate):
As far as I know this originated with competitive fighting robots, where it is known as "melty brain" or "tornado drive," according to wikipedia, an... |
I'm trying to send Arduino sensor data to a server using a GPRS shield (SIM900 shield from Geeetech). I have this particular set up because the data will be updated to a website and the device will be roaming. I can't use http://www.cosm.org because to the best of my knowledge that only updates every 15 minutes, I need... |
I just got a kit and im not sure if its me or not but it appears one of the continuous servos might be broken. What happened first when I plugged it into the microcontroller, it made a humming sound when I sent it commands. The second continuous servo didnt work at all
I played around with different ports on the aurdin... |
Following, the previous question, I am trying to calculate how much one rocker would rotate when the other is being rotated. I attached my calculation here.
I am trying calculate the rotation of gear B that connects to right rocket. Given gear A rotates at 0.05 rad, what is the rotation of gear B in rad? Gear ratio A:D... |
I recently have been working on a little project. Unfortunately, I've ran into a bit of a road block with controlling servos using serial commands. The servos do appear to move when i put in any character into serial, but only a little. When i type in say, 90 characters of random gibberish, both servos connected to my ... |
I was jogging the ABB IRB1410 and I noticed that the servo motors are humming even when the joints are not moving. The motor cuts off only when the guard switch in the flex pendant is released.
What kind of mechanism which require the drive motors to keep running even when the joints are not moving ? I went through the... |
I am currently debugging and tuning an EKF (Extended Kalman Filter). The task is classical mobile robot pose tracking where landmarks are AR markers.
Sometimes I am surprised how some measurement affects the estimate. When I look at and calculate the numbers and matrices involved, I can work out how the update step got... |
I am building 4-wheeled, knee-high robot with music and speakers on top that will follow a target person as the target moves around. I would like some help with the setup for tracking the target. The most obvious solutions are Ultrasound or Infrared sensors or some kind of vision tracking, but for this application, I d... |
I am building a robot that will follow a target as the target moves around. I would like some help with the setup for tracking the target. The most obvious solutions are Ultrasound or Infrared sensors, but for this application, they won't work. Imagine that the robot is placed into a crowded area and asked to move towa... |
I bought a new Roboduino atmega 328 board. Basically Roboduino is a modded version of Arduino UNO made by robokits.co.in. The problem is
On Windows Plaform:
When I tried to upload a simple Blink program that's listed in the examples of Arduino IDE 1.0.4, I got error that
avrdude: stk500_getsync(): not in sync: resp=0... |
How can I provide more power to a DC motor that is in series behind a receiver circuit hacked out of a cheap RC car without burning up the receiver board? The board runs off two AAs at about 3V. I'm replacing the stock motor with a slightly larger one (12V, taken from a printer) and remounting it on a chassis for a hom... |
I ran into confusion while reading about motors.
Consider a motor with these specs:
Maximum motor voltage - 6VDC
No load current - 250mA max.
Stall current - around 1A
I am considering using the Texas Instruments L293D, with these specs:
Output Current - 600 mA Per Channel
Peak Output Current - 1.2 A Per Channel
If... |
I used a Turnigy 2200mAh 3S 25C Lipo battery pack with Turnigy balancer & Charger 2S-3S for about a month. Yesterday I left the battery plugged into four ESCs of my quadrocopter. Today I've found the battery totally discharged. When I tried to charge it, the charger showed it as faulty. After replugging it to the charg... |
I would like to ask which is better to design the multicopter with odd or even number of propellers? and why?
|
I bought an RC car about a year ago. A few days later I integrated an arduino nano into the vehicle. The only thing the arduino does is to receive the RC signal and pass it on to the esc/servo. So, basically it just does a big amount of NOTHING :)
Right now the wiring looks like this:
[Remote] -> [rc receiver] -> [ard... |
I have a matrix of M measurements and N objects. Each cell contains a cost of assignment a particular measurement to the object. I want to assign them optimally. As the condition, only one measurement can go to one object, and one measurement can go to only one object. I want to set some cost threshold, in effect there... |
Okay, this might sound like a stupid question but, is there some sort of a permission in the US I might require to fly a quadcopter or a UAV for that matter? I couldn't find much help anywhere else.
|
I'm looking for a robot that is capable of moving around and has arms that can get objects in one place and drop in another. Something akin to what we see in most sci-fi movies, though much simpler. It may run on legs, wheels or tracks; it may have claws or hands. I'm looking for open-sourced design, schematics, specif... |
So building a quadrocopter from scratch HAS a lot of decision making, and I need some input on the material choice.
I have short listed Aluminum and Carbon Fiber for the Arms and support of the Quadrocopter.
I am a little short on cash to experiment with both of them.
So considering that I have enough money to buy e... |
I am looking to upgrade the motors for SeaPerch underwater ROVs so we can carry heavier payloads and more equipment.
My question is, should I look for motors which have a higher RPM and lower torque, or with lower RPM but higher torque to gain a substantial power increase? If the latter, what threshold of RPMs should... |
Some time ago I saw a demo of a small 'toy tank' with a single camera mounted on it. This tank was able to drive around the floor and detect objects and then move/steer to avoid them.
The interesting part was that it used a single camera vision system and as far as I remember was taking advantage of the floor being fla... |
I have an Autonomous Lawn mower(ALM) which can mow a certain lawn area when that area is bounded by a perimeter wire. Even when that perimeter wire is removed, it has to mow the above mentioned area accurately without slipping into a neighboring area.
Constraints and problems:
The ALM is an open loop system.
Different... |
Visible worms, pests, and diseased parts of plants emit a unique odor (Volatile Organic compounds with different concentrations). I understand that sensors which can quantitatively detect these compounds development are being developed. My idea is to build a swarm of robots which can spray pesticides by detecting VOCs ... |
I'm trying to use a PID to stabilize a system described from the following difference equation:
$$y_{k+1} = a y_k \sqrt{(1-y_k)}~~~ + b y_{k-1} ~+ c u_k$$
Can I use Ziegler-Nichols's rules to find PID parameters in this situation?
To be more precise. My system is an Apache Http Server, in particular I'm trying to model... |
While looking up information for the right propellers for my quadcopter, I realized that they had different orientations i.e. Clockwise and Counterclockwise. On further research I found that all multi-rotors have different combinations of these orientations. So my question is WHY? How does it matter if the propeller is... |
I want to find the instantaneous center of rotation of a differential drive robot.
Assuming I know that the robot will travel with a particular linear and angular velocity $(v,w)$ I can use the equations (given at A Path Following a Circular Arc To a Point at a Specified Range and Bearing) which come out to be:
$$x_c =... |
This question stems from previous question, where I asked why does the prop orientation matter so much for a multirotor. But on further research† I found that these reasons need not apply to a tri copter. and then again. Why?
Are these reasons general for all multi rotors with odd number of motors? or even rotors?
† T... |
Using ArduPilot software (fixed wing, ArduPlane), I know that after I boot up I need to keep the system sit still while the gyros initialise.
When I have ground station in the field it's easy to know when it's safe to launch because the telemetry message tells me. But I don't always fly with a ground station. In these ... |
I'm robotic engineer, using OpenSCAD to model robotic components (gears, pulleys, parts, etc). But I need an application to model the physics and interaction of the components (for i.e. how will robot move if I rotate a given gear).
So, is there any software I can use for modelling interactions in Linux? Google SketchU... |
I am trying to write a C code for a pan-tilt unit model ptu-d46 using visual studio 2010 in Windows 7, but I can't find any tutorial or reference on how to do so. All the user's manual mentions is that there is a C programmer's interface (model ptu-cpi) available, but it doesn't say where to find it nor how to use. I l... |
Does anyone have experience with this ez-b, it is sold by ez-robot.com and comes with an SDK for Visual Studio
It has direct scripting in runtime and through usb or bluetooth, wifi, irc, https
My question is, if I get a regular arduino board, will i be able to do the same?
from what ive read, arduino needs to hold the ... |
I am using a LSM303 sensor to compute a heading and I want to turn my robot to a heading.
I have the simple code here:
int mag;
mag = compass.heading((LSM303::vector){0,-1,0});; //read the angle of the robot
Serial.println(mag);
while (mag != angle){
//while it isn't the desired angle turn and continue to upd... |
I'd like to know if anyone has had success detecting a warm-bodied mammal (ie. Human) using standard off the shelf, inexpensive sensors?
Ideally, I'd like to use an inexpensive sensor or combination of sensors to detect a person within a room and localize that person. I would like the robot to enter a room, detect if... |
I am working on a robotic application under R.O.S. groovy Galapagos.
I would like to make a tutorial about how create a template app with catkin_create_qt_pkg.
I'm unable to call the script catkin_create_qt_pkg from my catkin workspace.
I found it at the root : _/opt/ros/groovy/qt_ros/qt_create/script_
But even if I tr... |
I've worked with wiimote accelerometer, but I think now I want to move past that. Mostly because I want to have a wider range of available gestures and I think that using only one accelerometer has too many limitations for what I want to do. I'm looking for something compatible with arduino or RPi. Does anyone have rec... |
I want to embed environmental data collected from sensors into a live video stream from a camera. Has anyone done this or know how I would go about doing something like this? Is there a library available for the arduino or RPi?
|
So I want to program something that will simply push a button, but controllable over ethernet. I'm new to robotics so I don't know where to start. What's the best way to control an actuator over a network connection?
|
In general, is a Raspberry Pi processor powerful enough for a mobile chatbot? I want to make a small mobile robot that is like a chatbot. Is a Raspberry Pi processor powerful enough for any type of AI robotics?
As far as a mobile robot, I want to make a wheeled robot about one foot in every dimension. The chatbot abili... |
I am currently working on a legged hexapod which moves around using a tripod gait. I have two sets of code to control the tripod.
Set 1: Time based control
In this code set, I set the tripod motor set to move at their rated rpm for a required amount of time before shifting to the other tripod motor set.
PID control wo... |
I'm involved in research on psychologically plausible models of reinforcement learning, and as such I thought it'd be nice to try and see how well some to the models out there perform in the real world (i.e. sensory-motor learning on a mobile robot). This is already been done in some robotics labs, such Sutton's implem... |
How would you go about building a robot that can use a computer? Type on the keyboard, move & click mouse? I am talking about physically manipulating the hardware inputs, and the robot would be able to see the screen. Not connected to anything. It's purely autonomous. My hope is that this will replace human QA testers.... |
A little background of my aim
I am in the process of building a mobile autonomous robot which must navigate around an unknown area, must avoid obstacles and receive speech input to do various tasks. It also must recognize faces, objects etc. I am using a Kinect Sensor and wheel odometry data as its sensors. I chose C# ... |
I need to control quadrotor from a PC, without using a joystick.
I have got a mini-beetle quad V929 Beetle 4-Axis and also have this NRF24L01+ Wireless Transceiver Module Chip (2.4 GHz transceiver)
Is it possible to write an Arduino program to make them speak to each other?
I did some research and found that the quad ... |
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