From aliexpress This is a cool light bar that reacts to music and sound unfortunately it does not have a battery inside in this version
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Category: toy
Wireless bicycle computer
This is a Wireless bicycle computer On the left you can find the circuit board and on the right the back of the LCD screen The white area is where you put the battery normally a 2032 button battery
Tennis racket bug zapper
Just found this interesting bug zapper in the shape of a tennis racket. This bug zapper can be used easily to catch a mosquito flying. Let’s see what the bug zapper contains A very simple circuit containing low voltage to a high-voltage Transformer See the wikipedia link for technical details https://en.wikipedia.org/wiki/Bug_zapper If you touch the […]
Dynamo flashlight
This is the rest of my Dynamo flashlight after it fell on the ground On the bottom left you can see the winding of the Dynamo this is a fixed part and it’s connected to the LED and on the top right you can see the batteries that are charged by the Dynamo The left […]
HUBSAN X4 FPV teardown
Here some photos of my hubsan X4 FPV that l had to open because the blue LED’s soldering broke faulty wire a look into the remote. See I can be powered between 4 & 13 Volts
