In the world of DIY electronics, combining sensors with microcontrollers opens up a realm of possibilities for monitoring and measuring various environmental factors. One such project involves using an NTC 10K thermistor (Viessmann Speichertemperatursensor NTC 10k l=3750 7725998) and an ESP32 microcontroller to measure water temperature accurately. In this guide, we’ll walk you through the […]
Tag: esp32
How to connect an ESP32 to a free Wifi behind a Captive Portal?
Connecting an ESP32 board to a public Wi-Fi network with a captive portal that requires user interaction can be a bit tricky. Your ESP32 does not have any user-driven interaction possibilities and each captive portal offers different steps for users to consent. Sometimes its a single page with terms of use and a simple accpet […]
Optimize your Home Energy Consumption with an ESP8266 Siemens AMIS Reader and Home Assistant
In my recent blog on Open Source Home Energy Management with Home Assistant I wrote about how Home Assistant helps you to monitor and optimize your own home energy consumption. Within this blog post I will show how an ESP8266 Wifi enabled Siemens AMIS reader can be used to monitor the energy that your home […]
An Automated CI/CD Pipeline to Build and Release your ESP32 Firmware with GitHub Actions
The widely popular ESP32 microcontroller board is a great choice for any hobbyist to build smart electronics and home automation sensors. The board’s powerful but low-cost design inspired millions of DIY enthusiasts and laid the ground for many great products, such as the Dynatrace DevOps UFO. Firmware software for ESP32 boards is mostly implemented by […]
Implement an ESP32 hot spot that runs a captive portal
You know that kind of public wlan hotspots at hotels, coffee shops or other businesses that offer wifi access but you need to accept their terms of service? The technique of offering a consensus Web page right when you initially connect to an open wifi is called a ‘captive portal’. A captive portal forces an […]
Retrofit a Motion enabled Light with a Smart Home Assistant Sensor
Retrofitting existing electrical installations with some degree of additional home automation capabilities is a cumbersome activity. Most of the time, the fixed wired installations do not support adding the necessary home automation wires. Even if there is enough space for your home automation wires, the installation routes often do not end where your home automation […]
Build a wireless MQTT temperature and humidity sensor for your Home Assistant
Over the last months, I became more and more addicted to Home Assistant (Hass.io) and MQTT low cost wireless sensors. I was already familiar with several home and industrial automation systems that all come with a certain hardware (and price) and build upon a completely proprietary software stack. So long story short, I was searching […]