4 layers40 × 27 mm H2cboard, the printed circuit board in 3D

H2cboard

Size: 40 × 27 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 19
Nets: 50
Pads: 156
Tracks, vias: 307, 47
Pours: 4
Routed: Yes
KiCad: KiCad 8.0 (file 20240108)
Created: 28 Jan 2024
Updated: 30 May 2026

Overview

H2cboard is an open-source printed circuit board by c0pperdragon, from the c0pperdragon/HDMI2SCART repository on GitHub. It is a 4-layer board of 40 × 27 mm with 19 parts on 50 nets, routed with 307 tracks and 47 vias.

It is built around the ATTINY1604-SSF and SJ1-3525NG. Its parts include 9 capacitors, 3 resistors, 3 connectors, 2 ICs and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

README

README.md

HDMI2SCART

An adapter to drive a 15kHz analog monitor from a HDMI video source. Its main purpose is to allow authentic look and feel for an emulator based retro gaming solution. A second purpose is to interface with an RGBtoHDMI device for Lumacode decoding.

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

https://pcbkit.io/boards/c0pperdragon/HDMI2SCART

The board's own page, for a message or a post.

Source

Repository: c0pperdragon/HDMI2SCART
Board file: h2cboard_rev2/h2cboard.kicad_pcb
Commit: 0520f08
Licence: Not stated

Parts

Qty	Value	Footprint	References
5	10uF	Capacitor_SMD:C_0805_2012Metric	C1, C2, C3, C8, C9
4	100nF	Capacitor_SMD:C_0603_1608Metric	C4, C5, C6, C7
1	0S102011MS2QN1	Button_Switch_THT:SW_Slide_1P2T_CK_OS102011MS2Q	SW1
1	100	Resistor_SMD:R_0805_2012Metric	R2
1	180	Resistor_SMD:R_0805_2012Metric	R1
1	470	Resistor_SMD:R_0805_2012Metric	R3
1	ATtiny1604-SS	Package_SO:SOIC-14_3.9x8.7mm_P1.27mm	U2
1	Conn_01x01	Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical	JUPDI1
1	HDMI_A	footprints:FCI_10029449-11-5B13-5DRLF	J1
1	NX3303X	footprints:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm_ThermalVias	U1
1	SCART-M	footprints:SCART_Edge_mount	J3
1	SJ1-3525NG	footprints:audio_jack	J2

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Questions

How big is the H2cboard PCB?

It measures 40 × 27 mm and has 4 copper layers, 1.6 mm thick.

What parts does the H2cboard use?

19 parts, built around the ATTINY1604-SSF and SJ1-3525NG. 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 H2cboard KiCad files?

From the c0pperdragon/HDMI2SCART repository on GitHub, at the commit this page was made from: the board is h2cboard_rev2/h2cboard.kicad_pcb and its schematic h2cboard/h2cboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the H2cboard design in my own project?

Its repository states no licence, so its author keeps all rights: ask c0pperdragon before reusing the design.