ESP-Now is in Espresiff's words: a wireless communication protocol defined by Espressif, which enables the direct, quick and low-power control of smart devices, without the need of a router The use-case here is battery-powered sensors. WiFi sensors take several seconds to start, connect, and send sensor measurements. Seconds don't sound…
This write-up will cover making a complete sensor device for ESPHome and Home Assistant use. BOM * Seeed Studio XIAO ESP32C3 * SHT30 * 260 mAh Battery * JST female wire * 2.54 6-pin terminal block You'll also need a 3D printer, a working Home Assistant installation, ESPHome (either as a HA addon or…
Learning Fusion360 has been fun. Making something that is useful is even better. We made a lab probe holder, and it works pretty well. Here's the clip holding an EC, pH and DS18B20 probe. It can hold two more probes. Feel free to download the Fusion360 file and play around…
We've released ESPHome components for all of our sensor modules. Have a look at them on GitHub. There are lots of example YAMLs to go through there as well. It makes it incredibly easy to get a fully working device, from hardware all the way to automations, stored metrics, and…
We added heat index and wet bulb temperature calculations to our SHT30 library. How hot is it really? Heat index makes an estimation using shaded air temperature and relative humidity to tell you what the temperature really feels like. High humidity makes it feel even hotter than it is, and…
pH calibration is a necessary annoyance. Because each probe and module is slightly different, each probe/module combination must be calibrated. pH probes don't give a linear response to pH, rather it gives two (mostly) linear slopes. One slope is between 0 and 7, and the other is between 14…
Home Assistant is awesome. A lot of our products are ultimately used within it, so Home Assistant will now get first-class support from us. All of our products will have HA demonstration projects. That means we give you a working YAML and header file for everything that doesn't already have…
Some people have brought MyCodo to our attention. In their words: Mycodo is an open-source environmental monitoring and regulation system that was built to run on the Raspberry Pi. It looks like a very well-put-together system. Someone has already developed a wireless sensor system that reports EC and pH values…