Amazon.com: Buck Converter 12v to 5v, DROK 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging : Electronics
Test 5v-12v level shifter | Details | Hackaday.io
3V3 to 12V logic level conversion : r/AskElectronics
A Quick Guide on Logic Level Shifting : 5 Steps (with Pictures) - Instructables
Optocoupler Isolation Board Voltage Converter 24v To 3.3v/5v To 24v/12v To 24v 4 Channel Isolated Module Plc Signal Level Board - Integrated Circuits - AliExpress
5v Regulator, 5pcs Mini Voltage Reducer DC 4.5-24V 12V 24V Step Down to 5V Buck Converter Board 3A Volt Step-Down Transformer Power Supply Module - Ideal Supply Inc (dba Ideal Blasting Supply)