Designed this as a mini flashlight for my daughter. It had a 20000mcd white led (at about 25mA) and is powered by a single 18650 Li-Ion cell. As my stock of 18650s are unprotected, I added OC and OD protection with the trusty DW01+G and use a TP4056 to charge it (@ 560mA) from a male USB plug on the tail. The circuit is switched with a momentary switch as I do not want her to forget it on.
This electronic system is used in staircases or some other places where it is needed to have an automatic light switching controller. It's a device which turns on the light only when there is dark around and the switch is pressed. It will be turned off after the high state on the output of 555 has been over, according to the formula: t=1,1R2*C5. If you want to control some LED eg. COB instead of s...
when you supply AC12V to this device, It will controll a relay according to the light intensity. when it's dark, the relay turns ON and when there's light it goes off.
This circuit can be very usefull since most most of the components are surface mounted and it consumes only a little amount of space.This circuit can be useful when considering saving electricity as well.You can connect this to any...
this is a simple **dark sensor** project that is connected to a relay which u can connect to a domestic light or fan etc. thedevice make sure that when there is light, the relay will be switched OFF and when it's in the dark, therealy is turned ON.
This is a simple circuit which controlls a relay with both LDR and PIR technology. you can supply 12v AC by connecting a 12v transformer to the 2 pinned **SCREW** header.If you dont have a transformer, you can directly connect a 6v battery to power this through the **'+DC6V' header**.
The LDR mode turns ON the relay when it's dark while the PIR mode turns ON the relay when theres a motion within...
# Auto light
Attiny10 & APDS-9930 based automatic light/switch
This project utilizes small ATtiny10 mcu to work with APDS-9930 ambient light (AL) and proximity I2C sensor.
This is used for automatic "smart" light in a drawer. Once the drawer are open the APDS-9930 will notice proximity change
and trigger a pres...
ATtiny85 IR remote LED controller - mainly for ambient light behind a TV
Single colour LED
On first power up
Press PROG button to enter program mode
Programming can be over written once the PROG button is pressed
Press ON/OFF assigned button
LED fades in to set brightness value
Default to 50% 
Once the di...
As title says, 2 very simple PCBs with schematics
schottky diode and capacitor (ceramic / electrolytic doesn't matter) is part of smoothing and can be skipped for standard LED's, but it's needed e.g for self changing color ones
This project is Auto Watering, light control for indoor plants with 328PU or Arduino. The auto water part is working with the sensors in water reservoir. Adding light control is on its way.
Code is at:
Uses 328PU to turn off light or turn on as needed, Using much software. But it has micro wave detection, pir detection, audio detection, and light detection.
It is a very simple touch light, the circuit base on the Touch Screen Controller ICs RH6616, the datasheet has the design references