Accessory board
About the Accessory board
Accessory board is an open source PCB design by felixzero, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 123.2 × 55.3 mm, with 57 components from 51 distinct parts.
Other key parts include the C8728, C133174, C7512, PCA9685PW and PCA9536D. By type, the board carries 29 connectors, 8 ICs, 8 capacitors, 5 resistors, 4 diodes and 2 jumpers.
It belongs with the robotics & motion designs in this gallery.
From the project
Repository for the ESCROCS team for the french robotics cup 2020!
This PCB is a fairly large PCB meant for driving various types of actuators: - up to 16 analog servos (typically MG-996 servos) - up to 2 5V or 12V unipolar steppers - up to 4 pumps or other 12V DC devices (2 x 500mA + 2 x 1A)
It does not require any firmware as it make use of NXP's I2C controller chips.
Main components on the Accessory board
Accessory board bill of materials (BOM)
57 components, 51 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C8728 PCA9629 | TSSOP-16_4.4x5mm_P0.65mm | U1 |
| 1 | C133174 PCA9629 | TSSOP-16_4.4x5mm_P0.65mm | U2 |
| 1 | C7512 LM2576HVS-5 | TO-263-5_TabPin3 | U3 |
| 2 | C133174 ULN2003 | SO-16_3.9x9.9mm_P1.27mm | U4, U5 |
| 1 | PCA9685PW | TSSOP-28_4.4x9.7mm_P0.65mm | U6 |
| 1 | PCA9536D | SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | ULN2003 | SO-16_3.9x9.9mm_P1.27mm | U8 |
| 1 | Battery in | BarrelJack_Horizontal | J1 |
| 2 | I2C | Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical | J2, J3 |
| 1 | Stepper 2 | Molex_KK-254_AE-6410-06A_1x06_P2.54mm_Vertical | J4 |
| 1 | Stepper 1 | Molex_KK-254_AE-6410-06A_1x06_P2.54mm_Vertical | J5 |
| 1 | End switch 2A | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J6 |
| 1 | End switch 2B | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J7 |
| 1 | End switch 1A | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J8 |
| 1 | End switch 1B | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J9 |
| 1 | Servo 0 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J10 |
| 1 | Servo 1 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J11 |
| 1 | Servo 2 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J12 |
| 1 | Servo 3 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J13 |
| 1 | Servo 4 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J14 |
Show 31 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Servo 5 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J15 |
| 1 | Servo 6 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J16 |
| 1 | Servo 7 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J17 |
| 1 | Servo A | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J18 |
| 1 | Servo B | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J19 |
| 1 | Servo 8 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J20 |
| 1 | Servo 9 | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J21 |
| 1 | Pump A | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J22 |
| 1 | Pump B | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J23 |
| 1 | Pump C | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J24 |
| 1 | Pump D | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J25 |
| 1 | Servo E | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J26 |
| 1 | Servo F | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J27 |
| 1 | Servo C | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J28 |
| 1 | Servo D | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J29 |
| 2 | Voltage select | PinHeader_1x03_P2.54mm_Vertical | JP1, JP2 |
| 1 | C72038 Logic | LED_D3.0mm | D1 |
| 1 | C72038 SS54 | D_SMB_Handsoldering | D2 |
| 1 | C72038 Pwr | LED_D3.0mm | D3 |
| 1 | 12V | LED_D3.0mm | D4 |
| 1 | 100u | L_Radial_D24.4mm_P23.70mm_muRATA_1400series | L1 |
| 2 | C14663 100n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C7 |
| 1 | C1588 10u | CP_Radial_D5.0mm_P2.00mm | C2 |
| 2 | C1588 100n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C8 |
| 2 | C21120 10u | CP_Radial_D5.0mm_P2.00mm | C4, C5 |
| 1 | C21120 100n | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6 |
| 1 | C25819 300 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | C25804 300 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2 |
| 1 | C25804 100k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3 |
| 1 | C25819 100k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4 |
| 1 | C4216 1k | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5 |
Accessory board design files
The KiCad project lives in the felixzero/escrocs repository on GitHub; these links point at the commit this page was built from.
Accessory board: common questions
How big is the Accessory board?
The Accessory board measures 123.2 × 55.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Accessory board?
57 components, from 51 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Accessory board design files?
From the felixzero/escrocs repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Accessory board design in my own project?
Yes, under the terms of its GPL-3.0 license, which felixzero chose for the repository.
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