Lazer driver: Done. (Patreon)

I've used a differential probe to look at the current shunt voltage during interesting events like power up, power down, connect and disconnect of the control voltage input etc.

That way I can see even short transient events, which might not be picked up by a current clamp.

The only things that could kill a laser are electrostatic discharge (which a Lasorb should absorb) and connection of the laser module while driver is turned on and trying to source current into an open connection.

 The driver has a 40A fuse at the input because good practice. 40A from a 12V input is 480W but to source 30A at 2V it only needs around 100W in its input voltage range of 6.5V to 13.8V. Something the size of an E-Bike battery has around 300Wh, so battery life can be hours easily! 40W are lost to heat along the way, but that's manageable.

I'll include it all in the next video. Also the selection of high current cable: https://www.youtube.com/watch?v=AcLscAzqzhY