Omega don't start with a matrix
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Hi, i have a onion omega 2+ with a matrix max7219
If i connect the #matrix and i turn on the omega doesn't start, no blink, nothing.
It's all connected in the expansion dock and im using the pins: 6,7 and 8.
Thanks guys!
Pd: sorry my english is poor... haha
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What's the exact wiring / cuircuit? What breakout board are you using? How much current does the module draw? Does it work when you first power on the Omega and then connect VCC to the matrix? Does it even work with an Arduino?
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Hi David, please take a look at reserved GPIOs that affect system boot-up:
https://docs.onion.io/omega2-docs/using-gpios.html#important-special-gpios
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Thanks for the answers
The problem was with the charger and that it had a temperature sensor connected to pin 1. With a 1.5 A charger it does not work, I do not know why.
I was testing only with the matrix and said charger and today in my university when reading the post I thought about trying it without the sensor and connecting it to the computer and it worked, but when I put it in the other charger it would not.
Conclusion, I am using pin 11 for the temperature sensor and I have changed the charger.
PS: Can the web documentation be downloaded? There is a lot of data that I have not read and I'm liking, but I think I jump things without wanting to.
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@David-Grande said in Omega don't start with a matrix:
PS: Can the web documentation be downloaded?
Here you are a
freshexample. Ubuntu 17.04 desktop - some Terminal commands from my home directory:
mkdir Documents/O2_Docs_2017-11-13
cd Documents/O2_Docs_2017-11-13
wget -d -a log -Draw.githubusercontent.com,docs.onion.io --mirror --convert-links --adjust-extension --page-requisites --no-parent https://docs.onion.io/omega2-docs/
That '-a log' is not mandatory but may help to refine the settings.And the result:
file:///home/my_home_dir/Documents/O2_Docs_2017-11-13/docs.onion.io/omega2-docs/index.html
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PS: Can the web documentation be downloaded?
Sorry, I forgot the '-H' option. Probably this is what you really want:
wget -d -a log -H -Draw.githubusercontent.com,docs.onion.io -m -k -E -p -np https://docs.onion.io/omega2-docs/
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@György-Farkas Thanks you!