I have a project using an arduino uno, seeed music shield v1 (sucks I know, but had on hand) and a laser pointer and Photoresistor trigger setup.
I got each working separately but when I use the music shield it uses up the serial read so I cannot use the data from the Photoresistor to trigger.
Is there a way to read the value from the Photoresistor without using the standard serial pin or a different way that doesn't require serial read?
I just need to be able to trigger the audio to play when the laser is interrupted/tripped.
I looked at the softserial but even when using in a blank sketch it doesn't seem to work or I don't understand how it works. When I run this sketch it writes "Goodnight moon!" on 57600baud, but 4800baud writes: "ÿïßï"
The softserial sketch used to test: https://www.arduino.cc/en/Tutorial/SoftwareSerialExample
The 2 sketches I am combining
- Music Shield: http://wiki.seeedstudio.com/wiki/Music_Shield_V1.0
- Laser Trigger: http://www.instructables.com/id/Arduino-Laser-Tripwire-Alarm-System/