Search found 4 matches

by Kamool
Sun Dec 30, 2018 7:53 am
Forum: Hardware
Topic: ESP-Wroom-32 powering
Replies: 5
Views: 3292

Re: ESP-Wroom-32 powering

I would use switching regulator if i know how. I've never used them and I'm a little worried about noise emissions.

Are there some guide that would help me to design circuit that will comply with standards?
by Kamool
Fri Dec 28, 2018 2:52 pm
Forum: Hardware
Topic: ESP-Wroom-32 powering
Replies: 5
Views: 3292

Re: ESP-Wroom-32 powering

How come You don't have any problems?

When powering from 14.8V to 3.3V at 130mA it has to dissipate almost 1,5W. Isn't that much for SOT-223 package?

I'm using 10uF at both sides.

Even 3.3V regulator in TO-220 package is not enough and overheats..
by Kamool
Thu Dec 27, 2018 12:40 pm
Forum: Hardware
Topic: ESP-Wroom-32 powering
Replies: 5
Views: 3292

ESP-Wroom-32 powering

Hello, I'm building commercial project based on esp32. It uses ESP-wroom-32 module, instrumentation amplifier and one mosfet. ESP32 is in BT mode. It is used in motorcycle so I would like to power it from ignition coils 14.8V. But how? I've tried using AMS1117-3.3, but that overheats and shuts down....
by Kamool
Wed Oct 31, 2018 3:34 pm
Forum: Hardware
Topic: ESP32-PICO-D4 circuit question
Replies: 3
Views: 2878

ESP32-PICO-D4 circuit question

Hello, I'd like to use ESP32-PICO-D4 in my motorcycle data-logger module. First of all - do i need anything more that things in "peripheral schematics" in datasheet to run module? Secondly - 5 meters of wifi range is more than enough for me, then do i need to make matching circuit (L5, C27, C28) for...

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