START A BITParts · Power
3.3 V regulator
AMS1117-3.3 module (Fasizi), 4.75-12 V in, 3.3 V out
Makes 3.3 V from 5 V, so a Micro:bit can run from the same 5 V as the sensors and servos.
2Use it
| Pin or leg | What it is for |
|---|---|
| IN | 5 V in, from the USB power board |
| GND | GND |
| OUT | 3.3 V out |
- IN to 5 V and GND to GND: OUT gives 3.3 V.
- To run a Micro:bit from it: OUT through the diode to the Micro:bit’s 3V pin.
Good to know: Into the Micro:bit's 3V pin only through a diode, and never while its USB cable is in without that diode.
The idea behind it, step by step: 5 V parts with a Micro:bit
Used in
3Facts
| In | 4.75-12 V |
|---|---|
| Out | 3.3 V, up to 800 mA |
| Size | about 9 × 12 mm |