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Steer32

jpt1729·Steer32

Steer32 PCB layout, top view — open source ESP32 board by jpt1729

About the Steer32 PCB

Steer32 is an open source ESP32 PCB design by jpt1729, published on GitHub. It is a 2-layer board measuring 29 × 62.2 mm, with 49 components from 24 distinct parts.

Its main chip is the ESP32-S3-MINI-1, from the ESP32 family. Other key parts include the BQ24090DGQ, CP2104, AP2112K-3.3, Display-1.9in-IPS-170x320 and USBLC6-2SC6. By type, the board carries 23 resistors, 12 capacitors, 6 ICs, 3 transistors, 3 connectors and 1 diode.

It belongs with the power & battery and dev boards & breakouts designs in this gallery.

From the project

Steer32 is an ESP32 Devboard with support for a lipo battery and a 1.9" IPS Screen

Steer32 (named after the bovine classification of Bevo)) is a custom ESP32-S3-Mini-1 devboard made specifically with hackathons in mind.

Main features different from normal ESP32s - Built in display. - Option to plug in LIPO batteries.

- steer32.kicadpro / .kicadsch / .kicadpcb — main KiCad project. - custom-library/ — custom KiCad symbols and footprints used by the project. - docs/ — BOM (BOM.md, steer32.numbers). - scripts/ — helper scripts (kicadlabelalign.py). - gerber.zip` — exported fabrication files (gitignored, regenerate via KiCad plot).

Steer32, from the project README
From the project README

Main components on the Steer32

ESP32-S3-MINI-1BQ24090DGQCP2104AP2112K-3.3Display-1.9in-IPS-170x320USBLC6-2SC6

Steer32 bill of materials (BOM)

49 components, 24 distinct parts.

QtyPartRefs
1
ESP32-S3-MINI-1
U1
1
BQ24090DGQ
U2
1
CP2104
U3
1
AP2112K-3.3
U4
1
Display-1.9in-IPS-170x320
U5
1
USBLC6-2SC6
U6
2
SS8050
Q1, Q2
1
Q_PMOS_GSD
Q3
1
Battery_conn_in
J1
1
Conn_01x16_Pin
J2
1
Conn_01x22_Pin
J3
1
USB_C_Receptacle
USB_C1
1
D_Schottky
D6
5
0.1uF
C1, C2, C3, C4, C11
2
22 uF
C5, C6
4
4.7 uF
C7, C8, C9, C10
1
1uF
C12
7
330
R1, R10, R11, R12, R13, R17, R18
9
10k
R2, R7, R8, R9, R14, R19, R21, R22 +1
2
5.1k
R3, R4
Show 4 more
QtyPartRefs
2
22
R5, R6
1
1k
R15
1
2k
R16
1
100k
R20

Steer32 design files

The KiCad project lives in the jpt1729/Steer32 repository on GitHub; these links point at the commit this page was built from.

Steer32: common questions

What microcontroller does the Steer32 use?

The Steer32 is built around the ESP32-S3-MINI-1, from the ESP32 family.

How big is the Steer32 PCB?

The Steer32 measures 29 × 62.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Steer32?

49 components, from 24 distinct parts. The full bill of materials is listed on this page.

Where can I download the Steer32 design files?

From the jpt1729/Steer32 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Steer32 design in my own project?

The repository has no license, so all rights stay with jpt1729. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Steer32 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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