Review on Anmbest 10 Pack AMS1117-3.3 Voltage Regulator: Efficient Step Down Power Supply Module for 4.75V-12V to 3.3V Conversion - 800mA Buck Converter by Mark Allen
Works like a clock
3.3 volts is what you need for WiFi esp8266 chips, but what if the relay and other devices are 5 volts? What to do. Use a 5 volt power supply and use these step down voltage regulators. Great solution at a very affordable price
- Everything is fine!
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