Public projects 4
How to control many actuators like relays from one Arduino output pin? Use a strip of NeoPixel LEDs with LDRs as self-made optocouplers!
Arduino with NeoPixel Optocouplers Controlling Many Relays
Project tutorial by Pedro52
- 5,593 views
- 9 comments
- 37 respects
Many publications exist about moisture sensors for applications, e.g. plant watering systems. Making a DIY Sensor is fun and cost-saving.
Arduino Capacitive Soil Moisture Sensor (DIY) with ESP32
Project tutorial by Pedro52
- 145 views
- 2 comments
- 2 respects
A self-made (cheap) water level sensor and water level indicator to measure 5 water levels in a reservoir tank.
Arduino ESP32 DIY Water Level Sensor and DIY Level Indicator
Project tutorial by Pedro52
- 345 views
- 0 comments
- 7 respects
Toolbox 12
Replicated projects 0
Respected projects 3
Comments 12
Stereo NeoPixel Ring VU Meter 11 days ago
Arduino Capacitive Soil Moisture Sensor (DIY) with ESP32 11 days ago
Thank You!, Good to hear that it can be done on a Mega as well, very useful tip. The stainless steel welding rod is an excellent idea
Arduino with NeoPixel Optocouplers Controlling Many Relays 13 days ago
Dear Stauffski, thank you for your message, indeed I used the strip that I had available and yes you are right, it is the resin that is causing the optical cross-talk. I solved that by reducing the luminance of the LED's (strip.setPixelColor(RelaisNo, RelaisState*15, RelaisState*15, RelaisState*15); and that works perfectly. Using a shift register is another approach, that could be considered depending on the application.
Hi Eric, excellent inspiring project and so many views and reactions, great!