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PoE Switch Repair

This was a blown fuse on POE Port 3 of a TP-Link TL-SF1008P https://au.element14.com/littelfuse/046601-5nr/fuse-smd-1-5a-1206-v-fast-acting/dp/1596527

EasyDriver and the A3967

https://www.schmalzhaus.com/EasyDriver/ https://www.sparkfun.com/products/12779 https://www.robotgear.com.au/Product.aspx/Details/2940-EasyDriver-Stepper-Motor-Driver Letting the blue smoke out I think I somehow applied a reverse voltage from an unprotected 7AH SLA...