2 layers65 × 56 mm QuadOCDectHat, the printed circuit board in 3D

QuadOCDectHat

A collection of circuit designs for various MCUs, not just Raspberry Pis relating to Model Railroading

Size: 65 × 56 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 25
Nets: 22
Pads: 116
Tracks, vias: 116, 9
Pours: 2
Routed: Yes
KiCad: KiCad 3
Created: 18 Dec 2016
Updated: 18 Jan 2026

Overview

QuadOCDectHat is an open-source printed circuit board by RobertPHeller, from the RobertPHeller/RPi-RRCircuits repository on GitHub. It is a 2-layer board of 65 × 56 mm with 25 parts on 22 nets, routed with 116 tracks and 9 vias.

It is built around the MCT6H. Its parts include 8 resistors, 4 ICs, 4 diodes and 1 connector. It belongs with the ESP32 boards of this library.

Main components

MCT6H
DIP-8-55℃~+100℃ 1.25V 100% 2 250mW 300mV@10mA,10mA 3us 4.7us 50% 50mA 5kV 60mA 6V 70V DC Phototransistor DIP-8 Transistor, Photovoltaic Output Optoisolators ROHSVishay IntertechnologyTransistor, Photovoltaic Output Optoisolators

README

16LEDDriver23017SMD/README.md

16LEDDriver23017SMD

This is a SMD variant of 16DriverOutputHAT.

Parts

Qty	Value	Footprint	References
4		RPi_Hat:RPi_Hat_Mounting_Hole	H1, H2, H3, H4
4	10 Ohms	R1	R1, R3, R5, R7
4	10K Ohms	R1	R2, R4, R6, R8
4	BRIDGEX	KBL	D1, D2, D3, D4
4	MCT6H	DIP-8__300	IC1, IC2, IC3, IC4
1	In Track1 Out	bornier2	T1
1	In Track2 Out	bornier2	T2
1	In Track3 Out	bornier2	T3
1	In Track4 Out	bornier2	T4
1	RPi_GPIO	RPi_Hat:Pin_Header_Straight_2x20	J0

Questions

How big is the QuadOCDectHat PCB?

It measures 65 × 56 mm and has 2 copper layers, 1.6 mm thick.

What parts does the QuadOCDectHat use?

25 parts, built around the MCT6H. 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 QuadOCDectHat KiCad files?

From the RobertPHeller/RPi-RRCircuits repository on GitHub, at the commit this page was made from: the board is QuadOCDectHat/QuadOCDectHat.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the QuadOCDectHat design in my own project?

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

Category and platform

ESP32

Topics

hat raspberry-pi 3v-gpio-pins model-railroad rpi beagleboard esp32 arduino dyi printed-circuit cape openmrn openlcb lcc kicad

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/robertpheller-rpi-rrcircuits-quadocdecthat" title="QuadOCDectHat 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/robertpheller-rpi-rrcircuits-quadocdecthat.jpg" alt="QuadOCDectHat" width="1200" height="900">

A picture that opens the board, for a README

[![QuadOCDectHat](https://pcbkit.io/embed/boards/robertpheller-rpi-rrcircuits-quadocdecthat.jpg?size=s)](https://pcbkit.io/boards/robertpheller-rpi-rrcircuits-quadocdecthat)

Source

Repository: RobertPHeller/RPi-RRCircuits
Board file: QuadOCDectHat/QuadOCDectHat.kicad_pcb
Commit: c3d1a08
Licence: Not stated

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