Tiny/v1.1

Autopilots
__TOC__
The Tiny autopilot was designed with an end user application in mind.
== Features ==
* Single LPC2148 MCU 
* 8 Analog input channels 0V - 3.3V
* 1 3.3V TTL UART (5V tolerant)
* 7 PWM outputs
* 1 R/C receiver PPM frame input
* 1 SPI bus
* 1 I2C bus
* 1 USB (client)
* Integrated GPS receiver and patch antenna (4Hz update)
* 5V/2A switching power supply & 3.3V linear regulator (input voltage max: 20v)
* 2 LEDs (status display)
* 1 button (initiate launch)
* 25 grams
* 63 x 35mm (smaller then a business card)
The Tiny autopilot uses a single Philips LPC2148 ARM7 based microcontroller.
The ARM7 is a low-power 32-bit RISC processor core and the Philips LPC2148 has 512KB on-chip Flash ROM, 40KB RAM and can be clocked at 60MHz.
Although critical control code such as the R/C interface and servo output are well segregated in Paparazzi software and well protected from interference from flaws in the stability/navigation/comm/payload code, great care must be taken when experimenting with new software as some errors can cause a the processor to halt or stall for extended periods causing total loss of control. The dual processor Classix addresses this risk by runnning critical code on a separate independent processor.
The schematics are available from the CVS repository. Be aware that the Tiny 13 V1.1 is a four layer PCB with a dedicated ground and power supply layer.
Image:Tin13_bottom.jpg|Top
Image:Tin13_top.jpg|Bottom
== Architecture ==
== Pinout ==
(Tiny13 v1.1)
Pins Name and Type are specified with respect to the Autopilot Board
SERIAL 1
Pin #	Name 	Type 	Desription 	Suggested Color
1 	GND 	PWR 	common ground 	Black
2 	+3.3v	PWR 	3.3v Rail from Tiny 	Red
3 	SDA0 	I/O O.D.	I2C0 data 	
4 	SCL0 	I/O O.D.	I2C0 clock 	
5 	P0.14	IN 	In-Circuit Serial Programming (ISP) enable - LOW on this pin during boot up to enable (Note 1)	
6 	RESET	IN 	External Reset - A LOW on this pin performs a MCU hardware reset 	
7 	RXD_0	IN 	UART0 Serial Input (used by ISP Serial Bootloader) (5V Tolerant) 	Green
8 	TXD_0	OUT 	UART0 Serial Output (used by ISP Serial Bootloader) (5V Tolerant) 	Blue
Note 1 : Holding this pin low for at least 3mS after a RESET (or power up) instructs the controller to enter programming mode.
SERIAL 2
Pin #	Name 	Type	Desription 	Suggested Color
1 	GND 	PWR 	common ground 	Black
2 	+3.3V	PWR 	3.3v Rail from Tiny 	Red
3 	SCK 	I/O 	SPI0 Serial clock. Clock output from master or input to slave 	
4 	MISO 	I/O 	SPI0 Master In Slave Out. Data input to master or data output from slave	
5 	MOSI 	I/O 	SPI0 Master Out Slave In. Data output from master or data input to slave	
6 	SSEL 	IN 	SSP Slave Select. Selects the SSP interface as a slave (SSEL1) 	
7 	INT 	IN 	External interrupt 2 input (EINT2) 	
8 	USB+ 	I/O 	USB bidirectional D+ line 	Green
9 	USB- 	I/O 	USB bidirectional D- line 	White
10 	P0.23	IN 	Indicates the presence of USB bus power (VBUS) (5V Tolerant) 	Orange
RC
Pin #	Name 	Type	Desription 	Suggested Color
1 	GND 	PWR 	common ground 	Black
2 	+5v 	PWR 	5v Rail from Tiny to R/C receiver supply 	Red
3 	PPM_IN	IN 	PPM Stream from RC Receiver (5V TOLERANT)	White
4 	NC 	- 	no connection 	
5 	NC 	- 	no connection 	
ANALOG
Pin #	Name 	Type	Desription 	Suggested Color
1 	GND 	PWR 	common ground 	Black
2 	+3.3V	PWR 	3.3v Rail from Tiny 	Red
3 	ADC_0	IN 	Analog to Digital Converter Input #0	
4 	ADC_1	IN 	Analog to Digital Converter Input #1	
5 	ADC_2	IN 	Analog to Digital Converter Input #2	
6 	ADC_3	IN 	Analog to Digital Converter Input #3	
7 	ADC_4	IN 	Analog to Digital Converter Input #4	
8 	ADC_5	IN 	Analog to Digital Converter Input #5	
9 	ADC_6	IN 	Analog to Digital Converter Input #6	
10 	ADC_7	IN 	Analog to Digital Converter Input #7	
== Schematic ==
Image:Tiny_v1-1_schematic_1.png|Tiny v1.1 Schematic (1/2)
Image:Tiny_v1-1_schematic_2.png|Tiny v1.1 Schematic (2/2)
== Bill of Materials (BOM) ==
Please note that there are differences between 0.9, 0.99, and 1.1. Choose the version that matches your hardware.
Warning: C20 needs to be a low ESR capacitor and the one listed on the BOM isn't. A proper replacement would be B45197A2226K209. This could potentially cause instability of the 3V3 supply which, of course, is critical.
=== Tiny 1.1 BOM ===
1.1_bom.zip
Addendum: There are digikey part numbers for two more of the components.
Murata inductor is 490-1116-1-ND
Tactile Switch is either SW1020CT-ND (grounded) or SW1021CT-ND.
=== Tiny 0.99 BOM ===
Qty	Value 	Device 	Parts 	Manufacturer 	PN 	distr PN
7 	- 	53047-03 	CAMERA, RC_RX, S0, S1, S3, S4, S5 	Molex 	53047-0310 	DK WM1732-ND
1 	- 	53047-04 	VIDEO_TX 	Molex 	53047-0410 	DK WM1733-ND
1 	- 	53047-08 	SERIAL_1 	Molex 	53047-0810 	DK WM1737-ND
2 	- 	53047-10 	ANALOG, SERIAL_2 	Molex 	53047-1010 	DK WM1739-ND
1 	FUTABA_BEND	FUTABA_BEND 	CON_ESC 	- 	- 	-
2 	LEDCHIP 	LED0805 	LED1, LED2 	Kingbright 	APT2012EC 	MO 604-APT2012EC
1 	B3S 	B3S 	SW1 	OMRON ELECTRONICS 	B3S-1002 	RS 183-717
1 	0.47uH 	L-EUL2012C 	L2 	WURTH ELEKTRONIK 	74479032 	RS 308-8564
1 	15uH 	WE_PD 	L1 	Pulse 	P1168.153T 	MO 673-P1168.153T
2 	33R 	R-EU_R1005 	R9, R10 	Yageo 	RC0402JR-0733L 	DK 311-33JRCT-ND
1 	150R 	R-EU_R1005 	R12 	Yageo 	RC0402JR-07150L 	DK 311-150JRCT-ND
3 	1K 	R-EU_R1005 	R2, R3, R8 	Yageo 	RC0402JR-071KL 	DK 311-1.0KJRCT-ND
1 	1.5K 	R-EU_R1005 	R11 	Yageo 	RC0402JR-071K5L 	DK 311-1.5KJRCT-ND
2 	3.3K 	R-EU_R1005 	R6, R15 	Yageo 	RC0402JR-073K3L 	DK 311-3.3KJRCT-ND
1 	4.7K 	R-EU_R1005 	R1 	Yageo 	RC0402JR-074K7L 	DK 311-4.7KJRCT-ND
7 	10K 	R-EU_R1005 	R4, R5, R13, R14, R16, R17, R18 	Yageo 	RC0402JR-0710KL 	DK 311-10KJRCT-ND
2 	12K 	R-EU_R1005 	R103, R105 	Yageo 	RC0402JR-0712KL 	DK 311-12KJRCT-ND
1 	15K 	R-EU_R1005 	R7 	Yageo 	RC0402JR-0715KL 	DK 311-15KJRCT-ND
2 	56K 	R-EU_R1005 	R102, R104 	Yageo 	RC0402JR-0756KL 	DK 311-56KJRCT-ND
1 	100K 	R-EU_R1005 	R101 	Yageo 	RC0402JR-07100KL 	DK 311-100KJRCT-ND
3 	18pF 	C-EUC0402K 	C3, C7, C10 	TDK 	C1005C0G1H180J 	DK 445-1238-1-ND
2 	22pF 	C-EUC0402K 	C8_1, C9_1 	Yageo 	CC0402JRNPO9BN220	DK 311-1018-1-ND
1 	100pF 	C-EUC0402K 	C103 	Kemet 	C0402C101J3GACTU 	DK 399-1022-1-ND
1 	220pF 	C-EUC0402K 	C102 	Kemet 	C0402C221K5RACTU 	DK 399-1030-1-ND
1 	220pF/50V 	C-EUC1206K 	C4 	Yageo 	CC1206KRX7R9BB221	DK 311-1164-1-ND
1 	1nF 	C-EUC0402K 	C104 	Kemet 	C0402C102K3RACTU 	DK 399-1031-1-ND
1 	3.3nF 	C-EUC0402K 	C101 	Kemet 	C0402C332K5RACTU 	DK 399-3070-1-ND
1 	22nF/50V 	C-EUC1206K 	C6 	Yageo 	CC1206KRX7R9BB222	DK 311-1176-1-ND
8 	100nF 	C-EUC0402K 	C1_1, C2, C3_1, C4_1, C5_1, C6_1, C7_1, C106	Kemet 	C0402C104K8PACTU 	DK 99-3027-1-ND
3 	100nF 	C-EUC0603 	C8, C9, C21 	Kemet 	C0603C104J4RACTU 	DK 399-1097-1-ND
1 	10uF 	CPOL-EUA/3216-18R	C18, C105 	Kemet 	T491A106M010AS 	DK 399-1564-1-ND MO-80-T491A106K010
1 	22uF 	CPOL-EUB/3528-21R	C20 	Kemet 	B45196H1226M209 	DK 495-2185-1-ND
1 	47uF/16V 	CPOL-EUD/7343-31R	C5 	Kemet 	B45197A3476K409 	DK 495-1544-1-ND
1 	330uF/10V 	CPOL-EUD/7343-31R	C1 	Kemet 	B45197A2337K509 	DK 495-1536-1-ND
1 	0.2F 	J1ROUND 	C77 	Panasonic - ECG 	EEC-EN0F204J1 	DK P11070CT-ND
1 	AD8552RU 	AD8552RU 	IC2 	Analog Devices Inc 	AD8552ARU 	DK AD8552ARU-ND
1 	BAS70 	BAS70 	D1 	Micro Commercial Co. 	BAS40-TP 	DK BAS40TPMSCT-ND
1 	STPS2L 	STPS2L 	D2 	STMicroelectronics 	STPS2L30A 	DK 497-3759-1-ND
1 	CD4015B 	CD4015B 	IC1 	Texas Instruments 	CD4015BPWR 	DK 296-14090-1-ND
1 	12MHz 	CRYSTAL_CTS 	Q1 	CTS-Frequency Controls	405C35B12M00000 	DK CTX639CT-ND
1 	DDTA143 	MUN2111T1 	T1 	Diodes Inc 	DDTA143ZCA-7 	DK DDTA143ZCADICT-ND
1 	L5973D 	L5973D 	REG1 	STMicroelectronics 	L5973D013TR 	DK 497-3638-1-ND
1 	REG1117 	REG1117 	REG2 	National Semiconductor	LM1117MP-3.3 	DK LM1117MP-3.3CT-ND
1 	LEA-4P 	LEA-4P 	GPS 	Microblox 	LEA-4P-0-000-0 	-
1 	GPS_ANT_13 	GPS_ANT_13 	ANTENNA 	Sangshin 	KSA-ST1580MS13 	-
1 	LPC2148 	LPC2148 	MCU 	Philips 	LPC2148FBD64-S 	DK 568-1765-ND
DK = digikey
MO = mouser
RS = radiospares
== Home Assembly ==
Visit here for the wiki page on Self Assembly Tips and Techniques. This page also includes Hardware Troubleshooting.
== Programming ==
The Philips LPC21xx series ARM7 microcontrollers include hardware ISP (InCircuit Serial Programming) and can be programmed through the serial interface UART0 (Serial1) by holding pin P0.14 low during power-up. Paparazzi software includes a USB bootloader program that allows for easy 1-second programming through a standard USB port with no adapters needed. This allows us to upload new settings, flight plans, or software updates quickly and conveniently without the need to disconnect the modem from UART0. See the FirmwareFlashing page for instructions on installing the bootloader and autopilot software.
Category:Tiny