Here are the instructions to wire a stable AMS1117-3.3 voltage regulator properly. This can power an ESP8266 or any 3.3V micro-controller reliably supporting current draws up to 1A.

Hardware

  • AMS 1117-3.3
  • 10 uF Electrolytic Capacitor
  • 104 Ceramic Capacitor

Wiring

AMS1117-3.3 (right to left)

  • Pin 1: GND
  • Pin 2: Vout
  • Pin 3: Vin

Connections

  • 5-12V -> Vin
  • GND -> GND
  • 10 uF Electrolytic Capacitor +ve -> Vout
  • 10 uF Electrolytic Capacitor GND -> GND
  • 104 Ceramic Capacitor +ve -> Vin
  • 104 Ceramic Capacitor GND -> GND