HardLabs

FEDWatcher

matiasandina·FEDWatcher·hardware/RPi_shield/RPi_shield.kicad_pcb

FEDWatcher PCB layout, top view — open source Raspberry Pi board by matiasandina
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About the FEDWatcher PCB

FEDWatcher is an open source Raspberry Pi PCB design by matiasandina, published on GitHub under the MIT license. It is a 2-layer board measuring 64 × 56.1 mm, with 6 components from 3 distinct parts.

Its main chip is the ESQ-120-33-G-D, from the Raspberry Pi family. By type, the board carries 5 connectors and 1 module.

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

From the project

Software and Hardware to connect FED3 devices over serial on Raspberry Pi 4

FEDWatcher is sofware to connect up to 4 FED3 feeder devices to one Raspberry Pi 4. The Raspberry Pi communicates with the FED3 devices using software serial from the BNC/headphone jack port of the Adafruit feather into the activated UART channels on the Pi.

Python code that uses standard Raspberry Pi software and Python packages. The modified software serial library used on the FED3 devices. See softwareSerial. Files to print the PCB we are using as a Raspberry Pi HAT for easier interface with the Raspberry Pi 4 pinout. Python code for FEDWatcher GUI, which provides a way for the user to…

FEDWatcher, from the project README
From the project README

FEDWatcher bill of materials (BOM)

6 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
M20-9750242
Fan
Harwin
M1
4
SJ1-3533NG
AudioJack3
CUI
J1, J2, J3, J4
1
ESQ-120-33-G-D
RASPBERRY_PI_4B_+_Samtec_ESP-120-33-G-D
Samtec
J5

FEDWatcher design files

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

FEDWatcher: common questions

What microcontroller does the FEDWatcher use?

The FEDWatcher is built around the ESQ-120-33-G-D, from the Raspberry Pi family.

How big is the FEDWatcher PCB?

The FEDWatcher measures 64 × 56.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the FEDWatcher?

6 components, from 3 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 FEDWatcher design files?

From the matiasandina/FEDWatcher repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the FEDWatcher design in my own project?

Yes, under the terms of its MIT license, which matiasandina chose for the repository.

Can I test firmware for the FEDWatcher without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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