Closed fullphat closed 7 years ago
@fullphat: could you post the contents of /boot/config.txt
please?
This issue seems relevant/related: https://github.com/jgarff/rpi_ws281x/issues/103
Also to note, I arbitrarily picked the ws2812 library to do the low level bit-banging. I will create a branch and use the 'other' library (rpi_ws281x) to see if we get consistent results.
@fullphat can you post a video?
@fullphat - there is a branch rpi_ws281x with a different low-level neopixel interface implementation, which works on my 8x4 pHAT, but fails miserably on Travis CI (it wonit build/install rpi-ws281x, see https://travis-ci.org/rm-hull/luma.led_matrix/jobs/197477506)
Curious to see if this fixes the issues you describe..
Gents - apologies - been maxed out with work. Give me a few days and I'll do some videos and try out the branched library.
@fullphat - any chance you could try the rpi_ws281x branch on your 8x8 unicorn hat?
@fullphat any news?
sorrysorrysorrysorry - will try to get to this ASAP!
Apologies all - I've since purchased the HD Hat and have been using the Pimoroni/PIL libraries to run it. Will try to get back to testing this but I'm rammed right now.
The following code works, but get sporadic behaviour - most commonly missed pixels:
On launch, the entire HAT will light up briefly. Sometimes it's white/bright colours, sometimes it's a random selection of colours. Green dot begins moving across the display, but after a short while - usually by line #3 or #4 it will start 'jumping' (missing pixels).
Pi 3B (less than a week old), no mods other than the HAT itself.
Linux ninja 4.4.38-v7+ #938 SMP Thu Dec 15 15:22:21 GMT 2016 armv7l GNU/Linux
$ cat /etc/*-release
No mods other than enabled SPI, disabled boot to Desktop Manager and enabled SSH
Do you want entire output? Ok to paste in comments?
2.5A (https://www.amazon.co.uk/gp/product/B01M03T0UB/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1)
None - just power and the HAT. Wifi is built-in on Pi 3. Pi is accessed via SSH.
No, these work consistently fine.
No, arrived complete and good to go.