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 »
I have built a water flow controller with two home made panels made around the Arduino infrastructure. One unit is near the sensors measuring flow and pressure, the other one communicating on my home automation network. The two units are connected with RS485.
I have designed a module for controlling window shades as a part of my own home automation project.
Presentation in Hungarian: Arduino függvénykönyvtárak, Aszinkron programozás
For this project I was inspired by Benjamin Heckendorn, where he was building a game for practicing hex numbers. I always wanted to build that, but did not wanted to make my own PCB. Then I came across with the so called LED&KEY board. Actually this is already a 3in1 game, and the binary-game mode… Read More »
I generally like the idea behind the Wemos D1 Mini system, but I have to admit, that there is a lot of problem with it. This time I was sorting the issue with the Relay shield. Now the Relay shield is a proper one, the only problem is that it occupies pin D1. Pin D1… Read More »
I have bought two pieces from the same RTC (Real Time Clock) module for the Wemos D1 Mini (aka. “WIFI D1 MINI Data loggar shield”) from China. The idea here is to keep a time-sensitive smart-thing working even without internet. Is the module faulty? This module utilizes the DS1307 RTC chip, that always requires the… Read More »
I have bought two “WS2812B 8×8” LED matrix panels from China for a possible future project. As I wanted to try them out it turned out, that none of them are working. So are they arrived broken? I used a big power supply for powering both the Arduino Nano and the matrix. I have connected… 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 »