On this instructable, I will show you how to make an emergency strobe light out of a disposable flash camera. You can use the strobe light in the forest if you get lost or to warn other people about something.
Please note that I am only 15 years old and I am not good at grammar so if you find some parts of the instructable confusing, please let me know and I will try fix it.
This instructable involves modifying a device that operates on 300v DC, so I am NOT responsible if you injure or kill your self and/or any body else from any of your actions messing around this device. So be careful what you are doing, be safe and have fun!
Step 1: Get the things!!
- Disposable flash camera (I used a Kodak camera with an LED light).
- TIC106M SCR or equivalent (5A, 30A surge, 400v)
- Neon bulb that strikes at 200 volts or something (I found in some other older disposable flash camera's circuit board).
Heres a data sheet for the TIC106 SCR
If you don't Know where to buy the SCR, try those two sites...
http://www.maplin.co.uk/ (Thats where I brought my SCR)
And the tools...
- Soldering iron/gun
- Flat-head screw driver
- Desoldering pump (optional, but it makes desoldering easier)
Step 2: Hack open the camera!
Once you got the outer camera's case off, be careful not to touch the circuit board as the capacitor may still be charged, discharge the capacitor by putting a screw driver across the capacitor's terminal and you may get some bright loud sparks.
After you discharge the capacitor, take the flash circuit out of the camera's frame.
Step 3: Modify the the camera's flash circuit
First, remove the flash trigger switch, we don't need those.
Then solder one lead of the neon bulb to the gate of the SCR and the other lead of the neon bulb to the anode of the SCR.
Then solder the anode lead of the SCR to where the flash trigger switch A was, and solder the cathode lead of the SCR to where the flash trigger switch B was.
And you are done, you had modified the flash camera into a strobe!
Step 4: Putting it all back together
I decided to put my strobe back in the camera.
First I need to remove the lens because it is in the SCR's way. After I removed the lens, there are some bits of plastic in the SCR's way, so I have to break away all the bits of plastic with a pair of pliers. After I had done that, I can now put in the flash strobe circuit back into the camera's frame and clip the camera's case together, and I am done!
Step 5: Using it
It works well for me! My strobe flashes every few seconds depending how good the battery is...
Step 6: Going further... Make the strobe flash faster...
You can change the 80uF capacitor to any capacitor that has a capacity from 80uF to 1uF as long as the capacitor has a voltage rating from 330v.
The smaller the capacitor you use, the faster the strobe will flash, but the dimmer the flash will be... Don't use a capacitor that has a capacity lower than 1uF because the strobe will make dim flashes.
There are two movies that you can watch, one movie (P3230005) is the strobe flashing with a 80uF capacitor and the other movie (P3230001) is the strobe flashing with a 1uF capacitor.
If you are going to watch the movie P3230001, the interesting flash pattern you see on the video, the strobe does NOT make that flash pattern! It is my video camera functioning improperly!