ESP32 bluetooth + wifi info

All ESP32 boards running MicroPython.
Target audience: MicroPython users with an ESP32 board.
Post Reply
yoLo_
Posts: 9
Joined: Fri Mar 24, 2017 2:34 am

ESP32 bluetooth + wifi info

Post by yoLo_ » Mon Oct 02, 2017 6:11 pm

So, i came across this little board and added to the shopping cart.
https://www.sparkfun.com/products/13907

Its features are very promising but if i read the datasheet correctly,
its programmable memory size is 520KiB ???
http://esp32.net/
Anyways, my ultimate question is that,
since it has integrated wifi and bluetooth
will these modules be automatically turned on once power is applied to
the board ? or they are turned on by initiating/calling certain functions ??
because i definitely would prefer the latter.
I'm asking because this is the first time i will be using an mcu with integrated wifi or bluetooth and wouldn't want to be working around a device that is constantly radiating.

User avatar
pythoncoder
Posts: 5956
Joined: Fri Jul 18, 2014 8:01 am
Location: UK
Contact:

Re: ESP32 bluetooth + wifi info

Post by pythoncoder » Tue Oct 03, 2017 6:47 am

This isn't really a MicroPython question. The maximum transmit power is 14dBm under any WiFi standard bar the long obsolete 802.11b mode. BLE is lower at 12dBm.

14dBm is 29mW - by contrast your mobile phone emits 34 times more power (~1W) very close to your cranium. I am not a doctor but I think you'll survive ;)

If you're running MicroPython the WiFi can be switched off. AFAIK BLE is not yet supported on ESP32.
Peter Hinch
Index to my micropython libraries.

Post Reply