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PiZeroHat

scottmsilver·treddy·hardware/PiZeroHat/kicad/PiZeroHat.kicad_pcb

PiZeroHat PCB layout, top view — open source ESP32 board by scottmsilver
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About the PiZeroHat PCB

PiZeroHat is an open source ESP32 PCB design by scottmsilver, published on GitHub. It is a 2-layer board measuring 65 × 45 mm, with 9 components from 8 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N8, from the ESP32 family. Other key parts include the Raspberry Pi Zero v1.3. By type, the board carries 3 resistors, 2 connectors, 2 capacitors, 1 IC and 1 module.

It belongs with the iot & wireless designs in this gallery.

From the project

Controlling my procor-9.3x treadmill

This is the custom hardware for the Precor 9.31 project: a Raspberry Pi Zero 2 W hat that sits inline on the treadmill's RS-485 serial cable between the console (Upper PCA) and motor controller (Lower PCA), so the Pi can monitor, proxy, and emulate the controller (see the protocol writeup in ../../HARDWARE.md).

- Dual RJ45 — From Console and To Motor (Amphenol 54602-x08 horizontal). Pin 6 is cut through the Pi (intercept + proxy/emulate); pin 3 is tapped passively. Pinout/GPIO mapping is in ../../HARDWARE.md and gpio.json. - D24V10F5 buck — Pololu 5 V 1 A step-down regulator off the…

PiZeroHat, from the project README
From the project README

Main components on the PiZeroHat

ESP32-S3-WROOM-1-N8Raspberry Pi Zero v1.3

PiZeroHat bill of materials (BOM)

9 components, 8 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1-N8
D24V10F5
U1
1
Raspberry Pi Zero v1.3
A1
1
441440003
From Console
J1
1
441440003
To Motor
J2
1
C14860
100nF
C3
1
100NF
100nF
C4
2
100K
100
R1, R3
1
22K
100
R2

PiZeroHat design files

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

PiZeroHat: common questions

What microcontroller does the PiZeroHat use?

The PiZeroHat is built around the ESP32-S3-WROOM-1-N8, from the ESP32 family.

How big is the PiZeroHat PCB?

The PiZeroHat measures 65 × 45 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PiZeroHat?

9 components, from 8 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 PiZeroHat design files?

From the scottmsilver/treddy 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 PiZeroHat design in my own project?

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

Can I test firmware for the PiZeroHat 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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