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[MagnusT]

Hi X, I was hallucinating when I said 20mA max draw for the ESP32. I’ve just measured again and it’s 100mA. So, speccing it as 200mA with a healthy safgety margin.

I’m assuming (never a good thing) that 1mH for the inductor is still fine, with 470uF caps. Would you agree?

I’m leaning towards a Kemet 1mH ferrite inductor with 450mA rated current: Mouser Part No 80-SBC9-102-451

If you use the radio (wifi or Bluetooth) the ESP32 have really mean high current spikes.

 

[Skylar88]

If you use the radio (wifi or Bluetooth) the ESP32 have really mean high current spikes.

Thanks for the warning. I don't use the radio on the ESP32 at this stage, nor do I anticipate doing so in the foreseeable future. I'll keep it in mind, though.

I've since decided to use an AmyAlice filter which is rated for 48V and 3A max.

 

[xrk971]

The AmyAlice filter is very good from what I have seen of the specs. If you get a 500mA 5V PSU, you should be fine. Typically they are 1A so I don’t see an issue.

 

[MagnusT]

Just FYI

The ESP32 draws a bit over 1A in very short spikes when using its radio. Mainly an issue to have properly sized and placed caps

https://hackaday.io/project/193628-...225599-example-esp32-wifi-and-low-power-modes