2 layers19.1 × 25.2 mm Filter wheel sens, the printed circuit board in 3D

Filter wheel sens

Filter Wheel Oxidised (Rust) - Control N slots filter wheel remotely

Size: 19.1 × 25.2 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 18
Nets: 20
Pads: 55
Tracks, vias: 127, 2
Pours: 1
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 8 Apr 2025
Updated: 8 Apr 2025

Overview

Filter wheel sens is an open-source printed circuit board by crisbour, from the crisbour/filterox repository on GitHub. It is a 2-layer board of 19.1 × 25.2 mm with 18 parts on 20 nets, routed with 127 tracks and 2 vias.

It is built around the 74AHC1G14GV and SFH 9206. Its parts include 8 resistors, 4 ICs, 2 diodes and 1 connector.

Main components

README

README.md

FilterOx - Oxidised Automated Filter Wheel

Running

The environment is readly setup for Nix, just enter the dev shell, and all the dependencies will be automagically taken care of for you:

nix develop

Flash the firmware:

cargo run --release

Firmware architecture

The firmware is based on the Embassy framework which allow easy setup of async routines without an embedded OS like RTOS. Furthermore, it provides common protocols in no_std (i.e. without alloc).

alt text

Resources

Crates of interest:

rust-embedded
esp-rs
embassy framework
esp_hal: no_std HAL library
std esp-idf espressif api doc: Refernce about the esp-idf framework but also about underlying espressif MCUs arch

HW:

Parts

Qty	Value	Footprint	References
2	10k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R4, R8
2	1k	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R5, R6
2	50k	Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical	RV1, RV2
2	5k6	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R3, R7
2	680	Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder	R1, R2
2	74AHC1G14	Package_TO_SOT_SMD:SC-74A-5_1.55x2.9mm_P0.95mm	U2, U4
2	LED	LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D1, D2
2	SFH9206	OptoDevice:Osram_SFH9x0x	U1, U3
1	Conn_01x04_Socket	Connector_Harwin:Harwin_M20-89004xx_1x04_P2.54mm_Horizontal	J1

The 17 most common of 18 parts.

Questions

How big is the Filter wheel sens PCB?

It measures 19.1 × 25.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Filter wheel sens use?

18 parts, built around the 74AHC1G14GV and SFH 9206. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Filter wheel sens KiCad files?

From the crisbour/filterox repository on GitHub, at the commit this page was made from: the board is PCB/wheel_sensor/Filter_wheel_sens.kicad_pcb and its schematic PCB/wheel_sensor/Filter_wheel_sens.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Filter wheel sens design in my own project?

Its repository states no licence, so its author keeps all rights: ask crisbour before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/crisbour-filterox" title="Filter wheel sens in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/crisbour-filterox.jpg" alt="Filter wheel sens" width="1200" height="900">

A picture that opens the board, for a README

[![Filter wheel sens](https://pcbkit.io/embed/boards/crisbour-filterox.jpg?size=s)](https://pcbkit.io/boards/crisbour-filterox)

Source

Repository: crisbour/filterox
Board file: PCB/wheel_sensor/Filter_wheel_sens.kicad_pcb
Commit: 86af773
Licence: Not stated

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