2 layers40.6 × 110 mm
Europi surface mount
Allen-Synthesis/EuroPi
EuroPi: A reprogrammable Eurorack module based on the Raspberry Pi Pico
92 parts584CC0-1.0
2 layers70 × 75 mm
WritingRobotV2
thekonon/WritingRobot1My repo for CAN comunication between Raspberry (Python UI) and STM32 MCU
- Size
- 70 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 56
- Pads
- 121
- Tracks, vias
- 202, 5
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Apr 2024
- Updated
- 7 Aug 2026
Overview
WritingRobotV2 is an open-source printed circuit board by thekonon, from the thekonon/WritingRobot repository on GitHub. It is a 2-layer board of 70 × 75 mm with 25 parts on 56 nets, routed with 202 tracks and 5 vias.
It is built around the L7805. Its parts include 10 connectors, 4 capacitors, 2 resistors and 2 ICs. It belongs with the robots and motor control boards of this library.
Main components
1README
README.mdWritingRobot
Draw anything using robot!
Overview
Robot is made of:
- Control part that runs on Raspberry PI4
- CAN communication using MPC2515 modules
Arduino Nano clone- STM32 Bluepill (STM32F103C6T6
- Two stepper motors drivers
Schemes
Electrical wiring
Arduino:
Stepper motors
Powerline
MCP2551 CANH/L -> Rx/Tx data module
L7805 -> 12V -> 5V/1A
Board design
Wiring scheme of actual PCB
3D view to the board without and with modules
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | MountingHole | MountingHole:MountingHole_4.3mm_M4 | H1, H3, H4 |
| 2 | 47 uF | Capacitor_THT:C_Radial_D8.0mm_H11.5mm_P3.50mm | C1, C5 |
| 2 | 60 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2, R3 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6, J7 |
| 2 | Pololu_Breakout_A4988 | Module:Pololu_Breakout-16_15.2x20.3mm | A2, A3 |
| 1 | 0.1uF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C4 |
| 1 | 100 nF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C2 |
| 1 | CAN-INPUT | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J4 |
| 1 | DEBUG_12V | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J9 |
| 1 | DEBUG_5V | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J10 |
| 1 | DEBUG_GND | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J8 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | LOGO | Logo:pikachu_small_3 | G*** |
| 1 | MCP2551-I-P | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | MOTOR-1-OUTPUT | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | MOTOR-2-OUTPUT | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | POWER_INPUT | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | PowerSwitch | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | ~ | STM32_Bluepill:BluePill | BluePill1 |
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Questions
How big is the WritingRobotV2 PCB?
It measures 70 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the WritingRobotV2 use?
25 parts, built around the L7805. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the WritingRobotV2 KiCad files?
From the thekonon/WritingRobot repository on GitHub, at the commit this page was made from: the board is 02_HW/board/WritingRobotV2.kicad_pcb and its schematic 02_HW/board/WritingRobotV2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WritingRobotV2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask thekonon before reusing the design.