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RCM-Hardware-V4

RCMgames·RCM-Hardware-V4·KICAD/RCMhardwareV4.kicad_pcb

RCM-Hardware-V4 PCB layout, top view — open source ESP32 board by RCMgames
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About the RCM-Hardware-V4 PCB

RCM-Hardware-V4 is an open source ESP32 PCB design by RCMgames, published on GitHub under the MIT license. It is a 2-layer board measuring 50.8 × 76.2 mm, with 29 components from 16 distinct parts.

Its main chip is the ESP32-DEVKITC-32E, from the ESP32 family. Other key parts include the L293D. By type, the board carries 17 connectors, 6 ICs, 3 test points, 2 resistors and 1 capacitor.

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

From the project

a better through-hole hand-solderable RCM

4 motors and 7 servos OR 6 motors and 3 servos 3 additional input only pins 2 x 3 inches, 50.8 x 76.2 mm runs from 5 NiMH AA batteries OR 4.5-12v with the addition of voltage regulators (see list of components) Qwiic connectors OR two more GPIO pins all components are hand-solderable through-hole parts except for the Qwiic connectors which are surface mount

Compatible with 38 pin devkitC ESP32 boards

RCM-Hardware-V4, from the project README
From the project README

Main components on the RCM-Hardware-V4

ESP32-DEVKITC-32EL293D

RCM-Hardware-V4 bill of materials (BOM)

29 components, 16 distinct parts.

QtyPartRefs
1
ESP32-DEVKITC-32E
U1
3
L293D
U2, U3, U4
1
~
U5
1
~
U6
1
Conn_01x05_Pin
J1
6
Conn_01x02_Pin
J2, J12, J13, J14, J15, J16
4
Conn_01x07_Pin
J3, J4, J5, J6
1
Conn_01x02
J7
1
Conn_01x02
J8
2
Conn_01x04_Pin
J9, J10
1
Conn_01x04_Pin
J11
1
Conn_02x03_Odd_Even
J17
3
TestPoint
TP1, TP2, TP3
1
>=47uF
C1
1
30k
R2
1
10k
R3

RCM-Hardware-V4 design files

The KiCad project lives in the RCMgames/RCM-Hardware-V4 repository on GitHub; these links point at the commit this page was built from.

RCM-Hardware-V4: common questions

What microcontroller does the RCM-Hardware-V4 use?

The RCM-Hardware-V4 is built around the ESP32-DEVKITC-32E, from the ESP32 family.

How big is the RCM-Hardware-V4 PCB?

The RCM-Hardware-V4 measures 50.8 × 76.2 mm, has 2 copper layers and is 1 mm thick.

How many components are on the RCM-Hardware-V4?

29 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the RCM-Hardware-V4 design files?

From the RCMgames/RCM-Hardware-V4 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-V4 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-V4 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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