HardLabs

RCM-Hardware-BYTE

RCMgames·RCM-Hardware-BYTE·KiCad/RCMhardwareByte.kicad_pcb

RCM-Hardware-BYTE PCB layout, top view — open source ESP32 board by RCMgames

About the RCM-Hardware-BYTE PCB

RCM-Hardware-BYTE is an open source ESP32 PCB design by RCMgames, published on GitHub under the MIT license. It is a 4-layer board measuring 31.8 × 31.8 mm, with 57 components from 17 distinct parts.

Its main chip is the microcontroller, from the ESP32 family. Other key parts include the TMC7300-LA-T, TPS63070RNMR and 5V, 2A, buck boost. By type, the board carries 27 capacitors, 14 resistors, 7 ICs, 6 connectors, 1 diode and 1 inductor.

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

From the project

PCB CAD for small wifi connected Robot Control Modules

1.25 by 1.25 inches, 31.75 by 31.75 millimeters 8 motors 8 servos battery monitoring I2C connector on QT PY runs on 3-11 volts

Look here for how to program it: https://github.com/RCMgames/RCMv2

Look here for more information and examples of robots: https://github.com/rcmgames

Want slightly smaller with a built in IMU? Look at the Nibble

PCBWay link (PCBWay will give me a commission without increasing the price for you). (approximately $90 for 2 boards and manufacturing took a month). send the gerbers, bill of materials, and ComponentPlacement files to a PCB manufacturer of your choice…

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

Main components on the RCM-Hardware-BYTE

TMC7300-LA-TTPS63070RNMR5V, 2A, buck boost

RCM-Hardware-BYTE bill of materials (BOM)

57 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
TMC7300-LA-T
TMC7300
Analog Devices
IC1, IC2, IC3, IC4
1
TPS63070RNMR
TPS63070 5V 2A buck-boost
Texas Instruments
U1
2
5V, 2A, buck boost
Pololu
U5, U6
1
pads to solder wires to, recommend JST RCY
J1
4
1x08 male header pins
J2, J3, J4, J5
1
2x08 female header pins
J6
1
microcontroller
Adafruit
ESP32_QT_PY1
1
GDB5818WS
1A Zener Diode / >=1A / 600 mV Vf @ 1 A
Good-Ark Semiconductor
D1
1
XFL4020-152MEC
XFL4020-1.5μH
Coilcraft
L1
19
GMC04X7R104K50NT
100nF/0402/16V/X7R/<=10%/ceramic
Cal-Chip Electronics, Inc.
C1, C3, C4, C5, C6, C7, C8, C9 +11
4
GMC21X5R226M16NT
22uF/0805/>=16V
Cal-Chip Electronics, Inc.
C2, C25, C26, C27
2
GMC21X7R106K16NT
10uF/0805/>=16V
Cal-Chip Electronics, Inc.
C16, C21
2
GMC10X5R106M25NT
10uF/0603/>=16V
Cal-Chip Electronics, Inc.
C23, C24
2
CRG0402F30K
30k / <=1%
TE Connectivity Passive Product
R1, R14
3
CRG0402F10K
10k / <=1%
TE Connectivity Passive Product
R2, R11, R12
8
CRL1206-FW-R120ELF
120mΩ / 0.5W / 1206 / <=1%
Bourns Inc.
R3, R4, R5, R6, R7, R8, R9, R10
1
CPF0402B130KE
130k
TE Connectivity Passive Product
R13

RCM-Hardware-BYTE design files

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

RCM-Hardware-BYTE: common questions

What microcontroller does the RCM-Hardware-BYTE use?

The RCM-Hardware-BYTE is built around the microcontroller, from the ESP32 family.

How big is the RCM-Hardware-BYTE PCB?

The RCM-Hardware-BYTE measures 31.8 × 31.8 mm, has 4 copper layers and is 1 mm thick.

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

57 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

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

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

Can I use the RCM-Hardware-BYTE 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-BYTE 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.

Similar boards