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Rainbow music pegasus

adamm·rainbow-music-pegasus·pcb/rainbow-music-pegasus.kicad_pcb

Rainbow music pegasus PCB layout, top view — open source ESP32 board by adamm
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About the Rainbow music pegasus PCB

Rainbow music pegasus is an open source ESP32 PCB design by adamm, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 151 × 31 mm, with 96 components from 28 distinct parts.

Its main chip is the ESP32-C3-MINI-1, from the ESP32 family. Other key parts include the OPA2322, TLV75533PDBV, MCP73831-2-OT and MCP41050. By type, the board carries 42 capacitors, 26 diodes, 17 resistors, 5 ICs, 2 connectors and 2 switches.

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

From the project

Disclaimer: This work is a work-in-progress. This project is still under active development and is estimated to be completed Spring 2027. What you see here is code that is largely incomplete, buggy, probably crashes, and could catch fire. The PCB board is largely inefficient, exp

Disclaimer: This work is a work-in-progress. This project is still under active development and is estimated to be completed Spring 2027. What you see here is code that is largely incomplete, buggy, probably crashes, and could catch fire. The PCB board is largely inefficient, expensive, probably broken, and could catch fire.

Version 1 of the rainbow-music-pegasus was completed March 2024. A few test units were sold at Breyer West show, but were never mass produced. v1 lacks wifi, bluetooth, and battery support.

Rainbow music pegasus, from the project README
From the project README

Main components on the Rainbow music pegasus

ESP32-C3-MINI-1OPA2322TLV75533PDBVMCP73831-2-OTMCP41050

Rainbow music pegasus bill of materials (BOM)

96 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3-MINI-1
U1
1
OPA2322
U2
1
TLV75533PDBV
U3
1
MCP73831-2-OT
U4
1
MCP41050
U5
1
DMG3415U
Q1
1
USB_B_Micro
J1
1
B2B-PH-K-S
J3
1
AOM-5024P-HD-MB-R
MK1
1
SW_SPDT
SW1
1
EVQQ2
SW2
24
WS2812B
D1, D2, D3, D4, D5, D6, D7, D8 +16
1
CDBA540
D25
1
LTST-C195KGJRKT
D26
3
0.1UF
0.1uF
C1, C2, C4
1
10UF
10uF
C3
4
2.2UF
2.2uF
C5, C6, C8, C39
1
1.0UF
1.0uF
C7
2
220UF
220uF
C9, C10
28
0.1uF
C11, C12, C13, C14, C15, C16, C17, C18 +20
Show 8 more
QtyPartRefs
2
4.7UF
4.7uF
C36, C37
1
6.8nF C0G
C38
6
10k
R1, R2, R3, R4, R5, R6
3
2.2K
2.2k
R7, R8, R9
2
10K
10k
R10, R11
3
100K
100k
R12, R13, R14
2
470
R15, R16
1
330
R17

Rainbow music pegasus design files

The KiCad project lives in the adamm/rainbow-music-pegasus repository on GitHub; these links point at the commit this page was built from.

Rainbow music pegasus: common questions

What microcontroller does the Rainbow music pegasus use?

The Rainbow music pegasus is built around the ESP32-C3-MINI-1, from the ESP32 family.

How big is the Rainbow music pegasus PCB?

The Rainbow music pegasus measures 151 × 31 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Rainbow music pegasus?

96 components, from 28 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 Rainbow music pegasus design files?

From the adamm/rainbow-music-pegasus 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 Rainbow music pegasus design in my own project?

Yes, under the terms of its Apache-2.0 license, which adamm chose for the repository.

Can I test firmware for the Rainbow music pegasus 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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