Today has been of rush as I return to work tomorrow.

First thing was to investigate why there was a clicking. This turned out to be an accidental short  between the stand offs and one of the power supplies. Easily fixed by cleaning up the tracks with a drill bit.

Next to re-solder one of the solar cells, now that I have a better soldering iron and tinning agent then turned out a lot better. I then sealed the connections with blobs of glue.

I looked into how to generate a PWM like signal from the Arduino. I discovered that there is a delay capability down to us. This successfully generated I connected up the system with the Rover stood off the ground.

Got wheel rotation but forgot to flip the direction of travel for the other side. A couple of line of C and a couple of wires made to connect into the direction input of the Driver.

Set the Rover down and set it off. Or rather I didn't.

I switched the current selection to 2 A. While still stationary I was able to get forward movement by a small nudge this looks like it needs to overcome some Sticktion. This might be why there is a 'ramp up' of frequency on Electric motors. I'll look into this after work.