Connecting a motor and 1602 LCD to a Raspberry Pi
This page describes the demo that can be found on the following youtube link: http://www.youtube.com/watch?v=zSQDuy-uu8I
Things we used
We chose a small DC motor which works on 5VDC, so we could power it directly from the RPi. It is, however, possible to connect an external power supply, to drive motors (or other stuff) which require a different voltage then the 5V provided by the Pi.
Steps to take
We split this up in two seperate scripts:
#!/bin/sh pwmval=$1 bw_tool -C -t "BW spi 7fets PWM" bw_tool -w 11:20 bw_tool -t "test: $pwmval" bw_tool -a 88 -w 50:$pwmval
#!/bin/sh ./set_pwm 58 ./set_pwm 48 sleep 4 for i in 50 60 70 80 90 a0 b0 c0 d0 e0 f0 ff ; do ./set_pwm $i sleep 0.5 done sleep 1 for i in ff f0 e0 d0 c0 b0 a0 90 80 70 60 50 40 0 ; do ./set_pwm $i sleep 0.5 done
Put both scripts in your homedir, and run the test_pwm script as root, and you're done!