EBOOT 30 Pieces Photoresistor Photo Light Sensitive Resistor Light Dependent Resistor 5 mm (5539)

I heat my well house in the winter with a 60 watt light bulb. I've been using an ESP32 in the well house to transmit the temperature to my network. I've just added this photoresistor to monitor the status of the light bulb. If the light should be on and the photo resistor doesn't detect the light, it will send me a text message.

GOOD QUALITY.

It works well, but requires more voltage to really light up the LED brightly. So needed 2 batteries on our simple paper circuits. But a cool, easily accessible switch that can be used for simple DIY and maker crafts.

Producto cumple con lo publicado.

These LDRs are really small. I didn't know that when I ordered them. The price was great, but I was dismayed to find them so tiny. But that turned out to be an advantage, since I am using them to detect laser light. I've assembled nine in a 3x3 matrix, joining all the left "legs" and all the "right" to create a single massive LDR. Consequently, the small surface area of each individual piece works to my advantage,

super fast shipping! product as advertised, measured one item: 16Mohm in dark; >1Kohm in bright light, small in size (about 1/4" dia). perfect for photo sensing project.

They work great. I messed the first one up when my soldering iron was too hot, but I learned my lesson and lowered the temperature on the second one. Good that this is a big bag, so I can mess up 29 more times! They work great on the breadboard too. For my application with Arduino Nano, each 22K resistor added between 80-100 points to the analog input signal (1023 max). So I had to add at least 6 resistors, to get a 1.0 in the digital port. I will add a 250K variable resistor (potentiometer) to my board next time to make adjustments easier.

My son and his classmate used to build a science project. Product worked well and they got an A