Review on HiLetgo DC DC Module Charger Arduino by Tim Sterling

I bought 15 of these and powered them directly from Creality Ender 3 printer power supplies (24V) so I can integrate my pis into printers and also rid the precious wall of plugs I have ended up vainly to use Pi power supplies. The first batch of these arrived bent in a bag and I had no problem swapping them out. Out of 15 I had one that wouldn't turn on and one that gave me a lightning bolt icon in octo print meaning the Pi wasn't getting enough power. All others worked perfectly and had no underperformance issues even with the pi 4. For the price and the ability to deliver enough performance in this small form factor, I can't help but remark that 2 out of 15 of them are bad. fixed because mine were flagged.