Lost in some office, surrounded by clueless clerks, and low on patience…
This is my adaption of the famous tag line of Army of Darkness: “Lost in time, surrounded by evil, and low on gas…”, which describes what I’ve been through the last 3 weeks. But finally I got the PCBs !
Here are the photos:
A slightly updated version will be available soon with all the necessary files to reproduce it (KICAD + gerber). There was a bug in the dimensional drawings of the LED matrix, so the footprint I created for it was slightly wrong too. It works, but it’s not 100% straight. So this will be fixed.
I’ll also add a jumper to disable the RTS/DTR line on the FTDI cable and a 10k pull-up resistor to disable the matrix while uploading code. This is not strictly necessary if the resistors are high enough, but it is the proper way. In a related project I drive the LEDs with high peak currents and without the PWM running, they will fry. In this case disabling the LEDs is vital.
Gerber files for this revision 3.00: 8x8_rgb_matrix-v3_fixed.zip Gerber + KICAD files for an updated revision 3.03: 8x8_rgb_matrix-v3_03_publish.tgz V3.03 schematics taken from the .tgz file
- Gerber + KICAD files for an updated revision 3.04: 8x8_rgb_matrix-v3_04_publish.tgz
- V3.04 schematics taken from the .tgz file.
For your convenience I’ve included all the non-standard libraries/footprints I’ve used in V3.03. You still have to configure KICAD accordingly (EEschema/CVpcb). See comment #4. Also see the library page if you want to download them individually.
I had this board manufactured by Seeedstudio, and put a short page into their open source PCB wiki. They also have access to the gerber files and maybe would produce more if there was a big enough demand for it.
Please also have a look at my projects page for the latest demo code.
Comprehensive writeup at instructables.com