Quite often, we want to place our sensors at locations where we have no access to a power outlet. The obvious solution is to add some solar panels and batteries to your project to make it run 24h / 7 days a week without the need to recharge it.
Need a big clock that is easy to read even on bright days? Why not build your own digital clock based on an ESP32. And on top update the time automatically over the internet (NTP time server). What do we learn? use NeoPixel library to drive a chain of WS2812 RGBW LEDs how to handle…
The ESP32-CAM is one of the cheapest solutions if you want to add video recording to your IoT project. In this tutorial, you will learn the following: how to program the ESP32-CAM how to do browser-based and RTSP video streaming how to use an FTDI adapter to program the ESP32-CAM how to use OTA to program the…
LoRa is a wireless communication known for its long range capability. But what if the distances between sensor nodes are farther than the range you can achieve with LoRa. That’s when you need a LoRa Mesh network. A mesh network is not a network in the typical star topology where every node is connected to…
I really love the tutorial written by JP how to use ESP32 Deep Sleep. For the beginners who are not familiar with ESP-IDF and prefer to work with ArduinoIDE (or PlatformIO), I want to take JP’s lesson over to Arduino framework in a practical example. In my other tutorial LoRa Gateway I showed you how…
Want to make a quick prototype with some sensors and your Feather boards? Then you might stumble over the same problem we did. The Feather system is great as long as you only need to put some Feathers and some Wings together. But how do you connect your sensors, actuators or display? Well, you can…
Overview When it is about radio communication, most think about the “famous” RFM95 and RFM96 modules. While these modules are well working and supported, they are based on an older technology from Semtech, the SX1272/SX1278 chips.Since some time Semtech has a new generation of radio chips, the SX126x series. Compared with the SX127x series this…
Part #2 – The LoRa gateway In my other post I made an introduction to Long Range (LoRa) communication. Now let us put this into a practical application. And to make it more interesting we will not only collect data from several sensor nodes, but as well send them to an IoT cloud service. This…
Part #1 – The sensor nodes In my other post I made an introduction to Long Range (LoRa) communication. Now let us put this into a practical application. And to make it more interesting we will use battery powered sensor nodes that can be left at positions where no power outlet is available. This part…
Usually we use WiFi, Bluetooth or GSM to connect our sensor devices with the world of IoT. But what if neither of that is available (or not affordable like GSM)?
