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RCM-hardware-D1

RCMgames·RCM-hardware-D1·KiCAD/RCM-Hardware-D1/RCM-Hardware-D1.kicad_pcb

RCM-hardware-D1 PCB layout, top view — open source ESP8266 board by RCMgames

About the RCM-hardware-D1 PCB

RCM-hardware-D1 is an open source ESP8266 PCB design by RCMgames, published on GitHub under the MIT license. It is a 2-layer board measuring 44.5 × 40 mm, with 10 components from 8 distinct parts.

Its main chip is the WeMos_D1_mini, from the ESP8266 family. Other key parts include the L293D. By type, the board carries 5 connectors, 2 ICs, 2 resistors and 1 capacitor.

It belongs with the robotics & motion and iot & wireless designs in this gallery.

From the project

cost optimized Robot Control Module for small wifi controlled robots

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.

The RCM D1 uses a Wemos D1 mini v4.0.0 esp8266 board.

Use the AVR versions of JMotor functions not the ESP32 versions.

RCM-hardware-D1, from the project README
From the project README

Main components on the RCM-hardware-D1

WeMos_D1_miniL293D

RCM-hardware-D1 bill of materials (BOM)

10 components, 8 distinct parts.

QtyPartRefs
1
WeMos_D1_mini
U1
1
L293D
U2
2
Conn_01x02_Pin
J1, J2
1
battery
J3
1
Conn_01x04_Pin
J6
1
Conn_01x06_Pin
J7
1
C_Polarized
C1
2
R
R1, R2

RCM-hardware-D1 design files

The KiCad project lives in the RCMgames/RCM-hardware-D1 repository on GitHub; these links point at the commit this page was built from.

RCM-hardware-D1: common questions

What microcontroller does the RCM-hardware-D1 use?

The RCM-hardware-D1 is built around the WeMos_D1_mini, from the ESP8266 family.

How big is the RCM-hardware-D1 PCB?

The RCM-hardware-D1 measures 44.5 × 40 mm, has 2 copper layers and is 1 mm thick.

How many components are on the RCM-hardware-D1?

10 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the RCM-hardware-D1 design files?

From the RCMgames/RCM-hardware-D1 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the RCM-hardware-D1 design in my own project?

Yes, under the terms of its MIT license, which RCMgames chose for the repository.

Can I test firmware for the RCM-hardware-D1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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