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Step 8Attaching the 9V battery clip
Take your hardcover 9V battery clip and cut it's wires to about 1/2 inch (1,4mm) lenth like in the 2nd picture.
Then solder the battery clip to your detector and make sure you get the polarity right!
After soldering your gagdet should look like pictures 3 & 4.
To prepare it for the next step, twist the 9V battery clip so it can be bent under the circuit like in picture nr.1.
Now is a good time to check if your device works. Carefully clip it on a 9V battery.
If you try it out during the day, the LED will be partially on depending on how bright it is where you are.
To be sure that it works point the Phototransistor to the sun/roomlight and put your finger over it.
The LED should get dimmer when your finger is in the way. If nothing works, check out the last step for possible solutions.
Then solder the battery clip to your detector and make sure you get the polarity right!
After soldering your gagdet should look like pictures 3 & 4.
To prepare it for the next step, twist the 9V battery clip so it can be bent under the circuit like in picture nr.1.
Now is a good time to check if your device works. Carefully clip it on a 9V battery.
If you try it out during the day, the LED will be partially on depending on how bright it is where you are.
To be sure that it works point the Phototransistor to the sun/roomlight and put your finger over it.
The LED should get dimmer when your finger is in the way. If nothing works, check out the last step for possible solutions.
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