Find all your DIY electronics in the MakerShed. 3D Printing, Kits, Arduino, Raspberry Pi, Books & more!

Make: Projects

Dummy Camera

Use a 555 timer to make an LED blink like the one in a security camera.

Dummy Camera

I got all the parts necessary for the project at my local RadioShack. You can get them cheaper somewhere else, I’m sure.

Related

Steps

Step #1:

PrevNext
Dummy CameraDummy CameraDummy Camera

Here is it finished. I made this one about a week ago to test the circuit. So this one may differ a bit compared to the one we're going to build.

Step #2:

PrevNext
Dummy Camera

Here are the parts needed to complete the project.

Step #3:

PrevNext
Dummy Camera

Here is the schematic for the project.

Step #4:

PrevNext
Dummy CameraDummy CameraDummy CameraDummy Camera
  • First we add our 8-pin socket near the center of the PCB.
  • Then we add our screw terminal and LED. the positive (+) end of the led goes to the positive (+) end on the terminal.
  • Next we add the 1k resistor. To help with the final layout we put one lead of it in near pin 3 on the socket.

Step #5:

PrevNext
Dummy Camera

Next we add the 10uF capacitor. Be aware of its positive and negative leads (negative should be facing down if the terminal is at the top).

Step #6:

PrevNext
Dummy CameraDummy CameraDummy Camera

Next come the rest of the resistors. The first is the 10k which goes closest to the capacitor. Then the 470 and 220 are joined together in series to make the equivalent of a 680k.

Step #7:

PrevNext
Dummy Camera

Solder all connections made so far.

Step #8:

PrevNext
Dummy Camera

After soldering all connections cut off the extra leads except for those on the capacitor and resistor.

Step #9:

PrevNext
Dummy CameraDummy CameraDummy Camera
  • Next we connect the negative lead of the capacitor to pin 1 and negative terminal using leftover leads and wires.
  • Then we connect pins 8 and 4 together to the lead of the resistor, and then to the positive terminal.

Step #10:

PrevNext
Dummy CameraDummy CameraDummy Camera

Next connect pin 7 to the spot between the 10k and the 660k resistors.

Step #11:

PrevNext
Dummy CameraDummy CameraDummy Camera

Connect pins 6 and 2 together and then to the spot between the capacitor and 10k resistor.

Step #12:

PrevNext

If you connected everything correctly, connect your battery to the circuit and let it sit for a couple of seconds. It should start to blink every 5 seconds. If not, check for short circuits or misconnected leads.

Step #13:

PrevNext

If you have any questions or comments please post them and I will help with what is possible. Or, email me at [email protected]


blog comments powered by Disqus

Related Supplies at Maker Shed

Follow

Get every new post delivered to your Inbox.

Join 26,180 other followers