Pirl Charger + 40A Constant Current Driver for Fiber Coupled Laser

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Fiber cleaver:
Pirl Charger: /
2$ JLC PCB service: /
Siglent PSU:
Patreon:
Lapping film set:
In this video I am looking at a better USB charger that can easily power 4 Raspberry Pis. Since it is a preview unit for a future Kickstarter campaign, some minor problems are allowed.
I have also designed, assembled and tested a constant current driver for the 30W fiber coupled laser and am hoping for some feedback!
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