hr202l
Example code for AOSONG HR202L on ESP32 Arduino.
Connect humidity sensor AOSONG HR202L to ESP32, it measures temperature and humidity.
AOSONG HR202L is a very inexpensive humidity sensor. We can buy it for $ 0.60 to $ 2. However, it is a little difficult to handle, so giving up accuracy makes it easy to measure.
ESP32 dev Board and HR202L
Schematics
2 types:
Schematic 1: for hr202l.ino, hr202l_udp.ino, ht202l_toAmbient.ino
It has a reference resistor (10k Ohm) on the mini breadboard.
Schematic 2: NO External components, for hr202l_woExRC.ino, hr202l_woExRC_udp.ino
Attention! NO adequate accuracy
Measured data on Ambient IoT Cloud Service (https://ambidata.io/)
The example code is in ht202l_toAmbient folder
Blog Site
- 基準抵抗で測定・ブログ記事（Japanese Only）：
https://bokunimo.net/blog/misc/701/ - ESP32に直結・ブログ記事（Japanese Only）：
https://bokunimo.net/blog/esp/903/