ESP32 Forum

I own an ESP32 cam and would like to be able to use radio frequency to send data.

I know the ESP32 cam has an internal antenna, but I can’t find which pins are used to instantiate the RF24 object, any help with this?

I have seen that ESP32 cam are sold with external antennas, Can you indicate the pins that would have to be used to send/receive data?

You want to use the builtin wifi? If so, there are no extra pins to use, just search for examples on how to use WiFi.
If you want to use the external antenna, then there is a 0 ohm resistor near the antenna that can be soldered to use the internal or the external antenna. By default, it is usually soldered for the internal (PCB) antenna.

Radu79 wrote: ↑

Sun Nov 22, 2020 2:21 pm

You want to use the builtin wifi? If so, there are no extra pins to use, just search for examples on how to use WiFi.
If you want to use the external antenna, then there is a 0 ohm resistor near the antenna that can be soldered to use the internal or the external antenna. By default, it is usually soldered for the internal (PCB) antenna.

The WiFi does not interest me, I want to send the information by radio frequency (for medium distance) and bluetooth (for low distance).
So, to test using the internal antenna (since it is the welded one), which pins should I use?

WiFi and BT use the same pin for the antenna. Not sure if you can add an external antenna to an ESP-Cam without some hacking (that is, cutting the trace to the internal antenna and soldering the external connector onto that) and the signal quality afterwards isn't guaranteed.

What protocol are you planning to use for long distance?