A mostly 3D printed wind vane is printed with the base attached to a ball bearing and magnet so that the four hall sensors positioned in a “plus” configuration at the base can detect direction. The 3D ...

**** articles from the second edition not yet updated. In this chapter we make use of all the ideas introduced in earlier chapters to create a raw interface with the low-cost DHT11/22 temperature and ...

Indoor air quality dataset from a low-cost ESP32 + MP-135 + DHT22 monitor (Dhaka, Oct–Nov 2026) - masumkawsar99/indoor-air-quality-esp32-dataset ...

If you want to measure humidity (and temperature, and maybe even barometric pressure) in a device that you’re building, have a look at this comprehensive test of seven different options. We’re going ...

*From the first edition waiting for update. Up to this point we have been using drivers that are installed and configured. In most cases you will at least need to configure the driver or some aspect ...

DHT22 utilizes exclusive digital signal collecting technique and humidity sensing technology and can ouptut calibrated digital signal. Small size & low consumption & long transmission distance (20 ...