DSO138 Follow Up - What was the problem

Why did it fail to work first time? Get your first pcb's free - PCBs at PCBWay: https://www.pcbway.com/ Link to product on Amazon https://amzn.to/32TfeMg Support me on Patreon   / electronicstuff   http://www.electronicstuff.info Link to case: https://www.thingiverse.com/thing:959009