HardLabs

Mbira2

collaborative-music-lab·ESP_MIDI·PCB/Kicad/Main-PCB/mbira2/mbira2.kicad_pcb

Mbira2 PCB layout, top view — open source ESP32 board by collaborative-music-lab

About the Mbira2 PCB

Mbira2 is an open source ESP32 PCB design by collaborative-music-lab, published on GitHub. It is a 2-layer board measuring 108 × 18 mm, with 37 components from 10 distinct parts.

Its main chip is the Wifiduino-ESP32S3-SMD, from the ESP32 family. Other key parts include the LSM6DS3_Breakout, SM351LT, MCP3208 and ISL21070CIH325Z-TK. By type, the board carries 16 ICs, 14 capacitors, 5 resistors and 2 connectors.

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

From the project

ESP32-s3 midi controller

1. The main PCB, with the ESP32 pre-soldered 2. 4 potentiometers, 2 to place on the PCB and two additional off-board potentiometers with small pcbs. 3. 4 Arcade Buttons 4. An LSM6DS3 IMU breakout board 5. An RGB LED and resistors

Make sure get your enclosure drilled for your faceplate before you mount your PCB to the faceplate in step 9!!!

1. Place two potentiometers on the PCB. Make sure they are flat. It is a good idea to place the potentiometers on a faceplate to make sure they are aligned. Solder the potentiometers in place. the potentiometers go on the opposite side of the PCB from the…

Main components on the Mbira2

LSM6DS3_BreakoutSM351LTMCP3208ISL21070CIH325Z-TK

Mbira2 bill of materials (BOM)

37 components, 10 distinct parts.

QtyPartRefs
1
LSM6DS3_Breakout
U1
1
~
U2
11
SM351LT
U3, U4, U5, U6, U7, U8, U9, U10 +3
2
MCP3208
U14, U15
1
ISL21070CIH325Z-TK
U16
2
Conn_01x04_Pin
J1, J2
14
0.1uF
C1, C2, C3, C4, C5, C6, C7, C8 +6
2
R_Small_US
R1, R2
2
R_Small_US
R1a1, R2a1
1
10k
R3

Mbira2 design files

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

Mbira2: common questions

What microcontroller does the Mbira2 use?

The Mbira2 is built around the Wifiduino-ESP32S3-SMD, from the ESP32 family.

How big is the Mbira2 PCB?

The Mbira2 measures 108 × 18 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mbira2?

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

Where can I download the Mbira2 design files?

From the collaborative-music-lab/ESP_MIDI repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mbira2 design in my own project?

The repository has no license, so all rights stay with collaborative-music-lab. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Mbira2 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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