SRF02

I found out the problem with the SRF02 modules. Somehow during my dealings with them, the boards seem to have shorted. They won't turn on if the SDA and SCL on the green and orange ones are plugged in. I found this out by using software I2C and changing the SDA and SCL pins for them. The orange and green modules can both ping but not receive data. I'm going to try and create my own sonar modules as I only have to calculate time in microseconds between them.