emos wrote:It does not seem to matter where it is ground I think ?
Ultimately the grounds on the Gertboard are all connected to each other and Pi GND. You could use any of the GND or -| pins on the Gertboard and it would still work.
I connected the servo to a nerf gun much to the annoyance of my wife .. somewhat childish
but I found the brush motor test a bit dull, just moving a motor is not that interesting.
They're just test programs after all. Interesting is where you
come in once you've seen how each element can be controlled. But glad to see you've got your creativity in full swing already.
emos wrote:I think I'll move onto accepting input from the PI to the atmega chip to "fire" the trigger rather than an endless loop. Thanks for the help with the wiring and raspi.tv
Then maybe a more grown up project ... a PIR sensor, servo and pi camera next.
You're welcome for the help. Fortunately I have a flag-waving servo permanently wired to my Rev 1 Gertboard "Whackadoodle" demo so it was fairly easy to figure out what you needed to do. There's so many wires on it that I can't bear to dismantle it - and anyway, any further software dev work I do will be done on a Rev2 Gertboard. Having said that though, I did enable Wii accelerometer control of the LEDs yesterday for the Cambridge Jam on Saturday. I always try to add something new. Still not using the ADC and DAC on this rig - but I think I will be before long. Not many available ports left on the GPIO though