Project started November 13, 2025. I gradually added material as the project progressed. Goal I need a sensor that can detect whether an object is in the desired location or not. Must use 24V input voltage, common in industry. Pass the signal on to either another microcontroller or a robot. The user must be ableContinue reading “Pi Pico 2 Sensor Project”
Tag Archives: elektroonika
LED Valgusti WS2811 kiipidega
Üks LED valgusti 15 LEDiga. LEDe juhitakse läbi WS2811 kiipide, mis lubab kõikide LEDide heledust kontrollida individuaalselt. Tahaküljele saab kinnitada ka Seeedstudi XIAO arendusplaadi. Või siis kontrollida eraldi oleva mikrokontrolleriga. Mina kasutan siin ESP32te. Neid valgusteid saab ka järjestiku mitu tükki üksteise järgi. PCBd valmistas ja printis PCBWay. Komponendid jootsin ise. PCB läbimõõt 10cm.
Photocoupler PC817 circuit
My photocoupler (optocoupler) board design. I added four resistor places to combine them with different input and output voltages. Also added a diode for reverse voltage protection. Does the output side need it? Any other suggestions? Updated version Update version with a two-way communication.
Development Board
Designed my own development board version for the famous 10-cent microcontroller of RISC-V CH32V003F4P6. Now I plan to order PCBs. Then assemble it and test it. Schematics Pins PCB Symbol Useful Links
A nine-cornered PCB
This is my new nine-cornered MCB. I plan to add nine gas sensors onto this board. It would be my artificial nose experiment. The flowers are hand drawn and vectorized. It is made by PCBWay. It’s the first time when I ordered matte black coloured boards. And I really like that it makes it feelContinue reading “A nine-cornered PCB”
Artwork that knows when you are taking a picture of it
This is my electronic artwork inspired by Peter Vogel’s and Walter Giers works. And I am pretty happy with how it came out. It looks cool and it has artificial intelligence (to a limited extent). It recognizes when you are taking a picture of it with a mobile phone. And it uses only a microcontrollerContinue reading “Artwork that knows when you are taking a picture of it”
My home environment and air quality monitoring system
We often hide the electronics in a box. And cases can be done well and nicely. But when our main interest is electronics then it is sad to hide it. That is way like to do it the opposite way. Sensors will measure particulate matter (Ultrafine dust PM2.5 and fine dust PM10), co2, TVOC, ambientContinue reading “My home environment and air quality monitoring system”
Tauno Erik 