ESP32 Power Supply Setup
Thought for 1 min 27 sec
Below are the changes that will be made to connect your USB‑C power source to the ESP32 via the AMS1117 regulator:
Table
| Component | Reference | Value / Function | Connection Details |
|---|---|---|---|
| USB‑C Connector | J1 | 5V input with ground | Use one of the VBUS pins (pin 3 or pin 4) as the 5V supply. The ground pins will be tied to common ground. |
| Voltage Regulator | U2 | 3.3V regulator to step down 5V | VIN receives 5V from J1. VOUT supplies 3.3V to the ESP32. The GND pin connects to common ground. |
| Decoupling Capacitor (Input) | C1 | 10µF | Place between U2 VIN and ground to help smooth 5V input. |
| Decoupling Capacitor (Input) | C2 | 100nF | Place parallel to [C1] on U2 VIN for high-frequency filtering. |
| Decoupling Capacitor (Output) | C3 | 10µF | Place between U2 VOUT and ground to ensure regulator stability. |
| Decoupling Capacitor (Output) | C4 | 100nF | Place parallel to [C3] on U2 VOUT for improved transient response. |
Wiring Connections:
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Input Side:
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Output Side:
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Common Ground:
This configuration uses the USB‑C J1 5V supply to feed the AMS1117 regulator, which then provides a stable 3.3V output to the ESP32 (U1). The added input and output decoupling capacitors ([C1]–[C4]) will help maintain voltage stability and filter noise.
If you want to proceed with these additions and connections, you can make the changes in your Flux schematic.
Add decoupling capacitors for AMS1177
Connect ESP32 3.3V pin
Ensure common ground for USB and regulator
