As mentioned in post Water pump controller I was building a system, that controls the water pump and connects to my Home Automation network. The system contains of two units. One is near to the sensors in a humid environment where there are no network coverage, the second unit performs the switching in a safe… Read More »
If you have a web server set up in your ESP32 device, you might want to add resources like images or java-scripts, that are referenced from your web documents. I can imagine, that a quite few people does not know, that ESP32 (and ESP8266 as well) has a built in file storage area in the… Read More »
Sometimes you just need a special USB device for your computer. As your feet are always free, we wanted have a pedal device. The pedal device can act as a keyboard or as a mouse depending on your needs. Just think for the ones experience disabilities. In our special case we wanted a device, that… Read More »
Lego robot controller – Color recognizer Summary In this article we will talk about how to detect the color of objects with Arduino. Preface I have built lately an Arduino based driver module for my old Lego robotics kit. At that point I have left some space on the board free, and this was intended… Read More »
See video explanation of this article here: Preface Rotary encoders are pretty cool and easy way to interact with our software. However it is not straight forward to achieve trusty operation with it. The problem in the physical characteristics of these devices, that I will explain in this essay. The second most problematic thing is… Read More »
Preface Recently I’ve received an order from China containing lots of cool stuff. One of this is a cheap radio frequency module. I was playing around with this a bit and I’m happy to share my experiments with you. Kickstart I had lots of trouble staring up the unit. Fortunately there is an Arduino… Read More »