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Introduction
This page lists the parts I used for the first batch of RGBtoHDMI boards.
(Apart from the capacitors which were out of stock, so I substituted).
It is not really cost effective to buy the parts for a single board.
Ideally one person needs to order the parts for 10 boards, and the split these into "kits".
PCB assembly
| Part Description | Supplier | Quantity | Part Ref | Min Order | Notes |
|---|---|---|---|---|---|
| 220R 0805 Resistor | RS 223‑0332 | 2 off | R4, R5 | 50 | |
| 10K 0805 Resistor | RS 740‑9072 | 4 off | R1-R3, R6 | 50 | |
| 100nf 0805 Multilayer Ceramic Capacitor | RS 464‑6688 | 4 off | C1, C4-C6 | 50 | working voltage ≥ 10V |
| 10uF 0805 Multilayer Ceramic Capacitor | RS 885‑1698 | 2 off | C2-C3 | 50 | working voltage ≥ 10V |
| Green 0805 LED | RS 861‑0037 | 2 off | D1-D2 | 50 | |
| XC9572XL-10VQG44C | Farnell 2831287 | 1 off | U1 | 1 | |
| SN74LS08D 14-pin SOIC | RS 663‑2375 | 1 off | U2 | 5 | |
| SPST Momentary Action Tactile Switch | RS 758‑1941 | 4 off | SW1-SW4 | 20 | |
| 2x20 way 0.1" female PCB header | RS 173‑1073 Farnell 2827916 | 1 off | P1 | 11 1 |
|
| 1x2 / 1x3 / 1x6 way right angle 0.1" male PCB header (low profile) | RS 251‑8654 | 1 off | P2,P3,P6 | 10 | part is 36-way, break as required |
| 1x2 way 0.1" female PCB header | RS 154‑8312 | 1 off | P1 | 11 | |
| 1x6 way Molex KK 254 7478 right angle PCB Header | RS 679‑5473 | 1 off | P5 | 10 | |
| 11mm M2.5 threaded spacers | CPC PC01988 | 4 off | 50 |
Cable assembly
| Part Description | Supplier | Quantity | Min Order | Notes |
|---|---|---|---|---|
| 1x6 Molex KK 254 2695 connector housing | RS 679-5391 | 1 off | 10 | |
| Molex KK 254 2759 crimp terminal contacts | RS 172-9178 | 6 off | 100 | |
| 6 way DIN plug | CPC CN00039 | 1 off | 1 | |
| 6 core flexible security/alarm cable | local electrical shop | 1M |
You can just about attach the crimp connectors to the cable with pliers, but I would not want to do this for 10 sets of cable. I ended up buying this tool from Amazon: https://www.amazon.co.uk/gp/product/B002AVVO7K
Raspberry Pi
| Part Description | Supplier | Notes |
|---|---|---|
| Raspberry Pi Zero Essentials Kit | Pi Hut | cheapest way to buy a Pi Zero now |
| Micro SD card | PiHut | any size will do |
| Adafruit Mini HDMI Cable | PiHut | or use a full size cable, and the adapter in the essentials kit |
| Adafruit Serial Cable | PiHut | optional, for diagnostics |
A Pi Zero W can be used instead.
PCB manufacture
The latest gerber files are here:
https://github.com/hoglet67/RGBtoHDMI/blob/master/kicad/v4/manufacturing/manufacturing.zip
Just upload these to Seed Studio:
https://www.seeedstudio.com/fusion_pcb.html
The price for 10 boards, including shipping, works out at about £12.00
CPLD Programming
I use the following clone of the Xilinx Platform Cable:
https://www.ebay.co.uk/itm/Xilinx-Platform-USB-Download-Cable-Jtag-Programmer-FPGA-CPLD-C-Mod-XC2C64A-M102-/272154533106
The Jedec file can be found here:
https://github.com/hoglet67/RGBtoHDMI/tree/master/vhdl
Construction (current designs)
- Bill of Materials (12-Bit Board)
- Bill of Materials (12-Bit Extender)
- Bill of Materials (Analog Board)
- Bill of Materials (TTL Buffer Boards)
- Bill of Materials (Pi Zero)
- Cables
- Assembled boards for sale
Construction (older designs)
- Bill of Materials (6/8-Bit Board)
- Bill of Materials (6-Bit Board)
- Bill of Materials (3-Bit Board)
- Bill of Materials (Atom Board)
- Assembly Notes (Atom Board)
- CPLD Programming
User Documentation