2 layers178 × 145 mm
Ultra DB X51 v1
ExploreEmbedded/8051_DevelopmentBoard
Design files and sample code for 8051 development Ultra Boards
145 parts70
2 layers44.4 × 40 mm
RCM hardware D1
RCMgames/RCM-hardware-D1cost optimized Robot Control Module for small wifi controlled robots
- Size
- 44.4 × 40 mm
- Copper layers
- 2
- Thickness
- 1 mm
- Parts
- 15
- Nets
- 20
- Pads
- 65
- Tracks, vias
- 148, 7
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Jun 2024
- Updated
- 30 Jul 2024
Overview
RCM hardware D1 is an open-source printed circuit board by RCMgames, from the RCMgames/RCM-hardware-D1 repository on GitHub, published under the MIT licence. It is a 2-layer board of 44.4 × 40 mm with 15 parts on 20 nets, routed with 148 tracks and 7 vias.
It is built around the WEMOS D1 MINI and L293D. Its parts include 5 connectors, 2 resistors, 2 ICs and 1 capacitor. It belongs with the radio and wireless boards and the ESP8266 boards of this library.
Main components
2README
README.mdRCM-hardware-D1
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.
Options for purchasing
- PCBWay link
- send the gerbers to a PCB manufacturer of your choice
Components
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 |
Acknowledgements
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
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | Conn_01x02_Pin | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J1, J2 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2 |
| 1 | C_Polarized | Capacitor_THT:C_Radial_D8.0mm_H11.5mm_P3.50mm | C1 |
| 1 | Conn_01x04_Pin | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J6 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J7 |
| 1 | L293D | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | WeMos_D1_mini | project:wemos-d1-mini-with-pin-header | U1 |
| 1 | battery | project:battery wires | J3 |
The 12 most common of 15 parts.
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Questions
How big is the RCM hardware D1 PCB?
It measures 44.4 × 40 mm and has 2 copper layers, 1 mm thick.
What parts does the RCM hardware D1 use?
15 parts, built around the WEMOS D1 MINI and L293D. 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 RCM hardware D1 KiCad files?
From the RCMgames/RCM-hardware-D1 repository on GitHub, at the commit this page was made from: the board is KiCAD/RCM-Hardware-D1/RCM-Hardware-D1.kicad_pcb and its schematic KiCAD/RCM-Hardware-D1/RCM-Hardware-D1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RCM hardware D1 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).