ESP32 Can WiFi module (comes with Foccci)

[mitch]

Hi,

This is my first post here and I hope a simple one. Not to much in depth in electronics but I wanted to use Foccci as my charge controller for DC-DC charging. But to do so I need to communicate with Foccci and therefore I added the ESP32 Can Wifi module. I was under the impression it works 'out of the box' so add 12v and can lines and a WiFi network should appear.

Reality:
The board gets warm (not hot, warm), but no lights (should there be any lights) and no WiFi. What am I doing wrong here? I put a 24v to 12v converter to alter the 24v board system (it's a light truck) and yes plus 12v is in the right position and the gnd as well. I measure 12.0v so that should be good.

Hop someone knows what I'm doing wrong. I've added a photo of the board in active state (so powered with 12v)

[johu]

Warm is normal, no wifi is not normal.
try closing jp2.
You should see the led flash briefly when connecting power

[mitch]

Thanks, will try that tomorrow morning and let you know what happens!

[mitch]

First of all, I mentioned getting warm because for me it means it gets power, just to clarify.

But starting the ESP32 gives no red led, can I assume it's dead? Or are other things possible.

[mitch]

And bridged jp2 just for the fun of it but no difference unfortunately.

[johu]

Doesn't sound great. Do you get 3.3V on the test point next to C5?

[mitch]

Actually yes, 3.22 which is imho close enough.