v1.0
- 1.75 by 1.575 inches, 44.45 by 40.0 millimeters
- 2 motors (one L293D)
- 2 servos OR qwiic connector
- Qwiic-Compatible
- runs on 4 NiMH AAs
- battery monitoring
- uses a Wemos D1 mini with esp8266 CPU
The goal of this project is to make the cheapest RCM board.
Program with RCMv2
The RCM D1 uses a Wemos D1 mini v4.0.0 esp8266 board.
Use the AVR versions of JMotor functions not the ESP32 versions.
- PCBWay link
- send the gerbers to a PCB manufacturer of your choice
Solder by hand to assemble your boards.
| part | links | quantity | notes |
|---|---|---|---|
| RCM D1 circuit board | see options for purchasing above | 1 | |
| Wemos D1 mini with esp8266 | link | 1 | |
| L293D | digikey | 1 | |
| 16 pin IC socket | 1 | optional | |
| 18k resistor | digikey | 1 | R1 |
| 10k resistor | digikey | 1 | R2 |
| 47uF capacitor | digikey | 1 | |
| Qwiic connector (JST SH) | digikey | 1 | optional, for qwiic connector |
| 2x3 male header pins | 1 | for servos | |
| 2 female header pins | 2 | for motors | |
| 8 female header pins | 2 | often included with the wemos D1 | |
| 8 male header pins | 2 | often included with the wemos D1 | |
| battery wires | JST RCY or battery plug of your choice | 1 |
The RCM D1 was originally created for PNW Assistive Technology's RC car project
Thanks for the WemosD1 Kicad footprints! https://github.com/rubienr/wemos-d1-mini-kicad