January 8, 2016
This is an improved version of the infamous ESP8266 chip.
- 512K of sram instead of 160K
- Runs at 160 Mhz instead of 80 by default
- Ethernet MAC (good luck!)
- 36 gpio instead of 17
- 12 bit adc instead of 10 bit.
- And more uart, i2c, spi, etc.
- Temp sensor built in.
The extra SRAM is the biggest thing to my mind.
Flash may be the same as the 8266 depending on what chip they ship with it.
I ordered several devices with this chip in late 2016.
Sparkfun was the first to actually send me something,
namely the ESP32 "thing". Hats off to Sparkfun.
I will note that ESP32 devices I ordered from AliExpress in late 2016 were cancelled after a long wait.
Also devices I ordered from Seeed studio also were cancelled after a long long wait.
Sparkfun seems to be able to supply their "thing" and hats off to them.
Because of these disappointments ordering this device from China along with the greater price
compared to the ESP8266, I have pretty much lost interest in the ESP32.
I received two of these in May of 2017 at a price of $6.90.
Mine are not the Lolin modules, which have a lot more pins.
They are small boards with only 8 pins on each side, along with 2 extra and hard to get to pins.
Note that early esp32 silicon had bugs and issues. And some (many? all?) of the lolin boards ship with the early
faulty silicon, so beware and keep your eyes open.
I am not doing any of this, yet anyway, despite putting a lot of energy into reverse engineering the ESP8266.
But other folks have picked up the baton: