=====Temperature monitor using ESP32 via wifi and server=====
==== General ====
  * beware 3.3 vs 5v input pins -- wemos 3.3v in
  * powering the esp32: https://techexplorations.com/guides/esp32/begin/power/
  * esp32 webserver: https://randomnerdtutorials.com/esp32-web-server-arduino-ide/


==== 2020-08-23 ====

===Wemos D1R1 ===

R1 vs R2
https://tasmota.github.io/docs/devices/Wemos-D1-R1-%26-R2/

inverted high and low pins for LED

can't get dht11 to work on esp8266 D1 R1

=== ESP32 ===
  * generic board and nano does not have right pins for LED
  * NodeMCU-32S does have the right pins
  
== Issue ==
Have problem uploading sketch onto W32 see: https://github.com/espressif/esptool/issues/226

  * problem uploading sketch
  * tried pressing boot or en button during the connection but did not work
  * cannot upload sketch with DHT-11 connected but able to do without it connected
  * finally got the DHT working and output to serial monitor

==== See also ====
  * [[it:inventory|Inventory]]