Step 3: Modifying the circuit and assembling board
To check to make sure the capacitor is fully discharged: Take an old screwdriver and bridge the gap between the capacitor's two leads.
Unsolder the capacitor and battery clips from the circuit board (make sure to keep note of their polarity).
Tip: Using two different colors of wire will help you remember polarity
There should now be four empty connections in the circuit board, two for the battery and two for the capacitor. Solder a foot long section of wire into each of these empty holes.
Finally, set the flash charge button/switch so that it is normally closed instead of normally open (picture 4).
The pushbutton switch, battery holder, and syringe tips will all go on the top of the board, while the circuitry and wire connections will go underneath.
Before drilling the acrylic (plastic, wood, w/e) piece, lay out the different components on the the top and bottom of the board to make sure everything will fit. Once you have found an orientation where all the pieces fit, drill holes in through the board, and attach the components.
Use hot glue to seal the syringe tips and battery connector (the pushbutton has a screw on nut) in place.
Unsolder the capacitor and battery clips from the circuit board (make sure to keep note of their polarity).
Tip: Using two different colors of wire will help you remember polarity
There should now be four empty connections in the circuit board, two for the battery and two for the capacitor. Solder a foot long section of wire into each of these empty holes.
Finally, set the flash charge button/switch so that it is normally closed instead of normally open (picture 4).
The pushbutton switch, battery holder, and syringe tips will all go on the top of the board, while the circuitry and wire connections will go underneath.
Before drilling the acrylic (plastic, wood, w/e) piece, lay out the different components on the the top and bottom of the board to make sure everything will fit. Once you have found an orientation where all the pieces fit, drill holes in through the board, and attach the components.
Use hot glue to seal the syringe tips and battery connector (the pushbutton has a screw on nut) in place.
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