Tiny v1.1
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 PWM 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
- 2 LEDs (status display)
- 1 button (initiate launch)
- 25 grams
- 63 x 35mm
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.
Architecture
Pinout
(Tiny13 v1.1)
Wire colors:
- USB- : white
- USB+ : green
- LPC_SSEL : orange
SERIAL 1
1 GND 2 +3.3V 3 SDA0 4 SCL0 5 P0.14 6 RESET 7 RXD_0 8 TXD_0
SERIAL 2
1 GND 2 3.3V 3 SCK 4 MISO 5 MOSI 6 SSEL 7 INT 8 USB+ 9 USB- 10 P0.23
RC
1 GND 2 5V 3 PPM_IN 4 NC 5 NC
ANALOG
1 GND 2 3.3V 3 ADC_0 4 ADC_1 5 ADC_2 6 ADC_3 7 ADC_4 8 ADC_5 9 ADC_6 10 ADC_7
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.
Tiny 1.1 BOM
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