[chbot] ESP8266 vs ESP32

[stephen.irons at clear.net.nz]

I have used the ESP32 as included on the recently released WiPy2 
module, as well as the LoPy (EPS32 with an additional LoRa radio device 
connected via SPI). These are available from www.pycom.io.

I have used Wi-Fi and LoRa only. One of our guys has played with the 
BLE, I wll ask how well it worked.

I have not tested the Wi-Fi range; we use it around the office only. 
The LoRa range was phenomenal (but very low data rate).

The WiPy family run MicroPython. It works rather well, but, as expected 
with firmware that is only a few months old, there are a number of 
significant bugs in both the ESP development tools and the Micropython 
firmware (but obviously no problems with my Python code!)

The Micropython firmware includes libraries for SPI and I2C which I 
have used to talk to other devices (temperature sensors, Panasonic 
Grideye device, etc).

The Micropython firmware also has drivers for various LCD modules, as 
well as libraries for drawing lines and text on full-graphics LCDs. I 
have not actually used these libraries. I'm not sure about 480x320 
pixels: most examples are for 128x96, with 12K pixels rather than 150K.

Power consumption is disappointingly high, if that is a concern. 2xAA 
cells would last days or weeks with Wi-Fi off, rather than months or 
years.

Stephen Irons

On Thu, Apr 6, 2017 at 11:28 PM, Robin Gilks <robin at gilks.org> wrote:
> I know a few peeps have used the ESP8266 but I wonder if anyone has 
> tried
> the newer all shiny ESP32 (dual core, BLE etc).
> 
> I'm particularly interested in the range compared to say a Lantronics
> XPICO which is physically about the same size (maybe a bit bigger) and
> whether the GPIO can drive a small (say 480x320) tft display in 
> either 8
> bit or SPI modes (I can't see enough pins for 16 bit).
> 
> Cheers
> 
> 
> --
> Robin Gilks
> 
> 
> 
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