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Picture of Pocket Remote Testor
Hy, Guys this is me again back with a new project.
This is a very simple and small. Even you can put it in your pocket.
It contains only 3 components in main. It tests the remote signal when
a button is pressed I usually use it to test my remote.

Step 1:

Picture of
1. TSOP 1738
2. Buzzer
3. Battery
4. Battery Holder
5. Double Sided Foam Tape
6. Electrical Tape
 
spirit x1 year ago

which wire of the buzzer is positive?