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/

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