UCTRONICS DC 9V 12V 24V to DC 5V 5A Buck Converter Module, 9-36V Step Down to USB 5V Transformer Dual Output Voltage Regulator Board [2 Pack]

I love these. Been using them for my 12v led setups where I need to supply 5v to my controller.

I have only bought 2 of these and I really like them for my projects. I plan on buying more in the future. Great product.

Excellent! I used it to power a guitar pedal from a 9V pedal power supply. I only needed to add a 9V reverse-polarity connector, since most power supplies output tip-negative and the Utronics is tip-positive. I just wish there were a case or cover for it.

I'm running an RPi 4, Waveshare 5" LCD, external SSD, Logitech C920 webcam, 1m or so of LED lights (12V) and 2 small fans off of this for my 3D printer and everything seems to work well so far. Supply power to this is from a 12V 5A wall wart. Ran a short ~1h print, all good. A minor word of warning - the voltage does drop temporarily if you touch the small IC chip on the board while it's running (I did this to check the temperature). I'm guessing the extra capacitance of your finger messes with the PWM signal used in the buck converter. This was the only time I experienced an under-voltage warning from my Pi.

Originally bought these due to the noted 5.2V 5A output capacity which is the ideal rating for a power hungry Raspberry Pi 5. It also helped resolve some power related issues with some equally power hungry 5G M.2 modems that I had been utilizing. I'm very happy with these. Great price and does exactly what it needs to and meets all the ratings it is advertised for. An additional pro-tip: Look up USB-C PD trigger boards or cables. Many all over Amazon. I have my setup fed by a 15V PD trigger board on the input side which allows me to use a more widely available PD power supply/battery bank and supply the necessary wattage. SUPER convenient. I've powered my rig on everything from a Steam Deck charger, power bank, USB-C PD car charger, etc..