Pi fighting
Mar. 21st, 2016 12:34 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
luckykaaGot a little tired of my Comic maker, so decided I'll do something with "Pi-Fighter" - my Raspberry Pi. I already have Wiimotes working. Now I need to get the IO working. Bought a huge batch of stuff from Amazon, including a vast number of white LEDs. I remember when these things were expensive. Now I can get a pack of 50 of the things for £3.46.
So, for my first trick, I try to light an LED. Seems to work if I connect it between 3.3V and GND. Also between one of the IO pins and GND. Seemed to light up. Yay!
Then I try to programatically tun it on and off. Doesn't work. Try lots of tinkering. Somewhere in my tinkering I manage to kill an LED! That's 7p worth of electronics down the drain already.
I try reading the inputes Still doesn't seem to work. Also the library I'm using seems a bit out of date and doesn't believe a Raspberry Pi can have a 40 pin connector. So I change library to one with no apparent documentation, and try again. Input 4 seems to be high. What happens if I force it low? Apparently I cause the Pi to restart.
Finally I work out the problem! Flip the ribbon cable round.
Suddenly it works!
So, for my first trick, I try to light an LED. Seems to work if I connect it between 3.3V and GND. Also between one of the IO pins and GND. Seemed to light up. Yay!
Then I try to programatically tun it on and off. Doesn't work. Try lots of tinkering. Somewhere in my tinkering I manage to kill an LED! That's 7p worth of electronics down the drain already.
I try reading the inputes Still doesn't seem to work. Also the library I'm using seems a bit out of date and doesn't believe a Raspberry Pi can have a 40 pin connector. So I change library to one with no apparent documentation, and try again. Input 4 seems to be high. What happens if I force it low? Apparently I cause the Pi to restart.
Finally I work out the problem! Flip the ribbon cable round.
Suddenly it works!
