Police Lights
- Thread starter Admin
- Start date
OK so I think I'm done messing around with this project. After countless testing and changing components I finally got what I wanted.
Using one 555 timer to run two cd4017 in order to get two different strobe effects. Blue and red for roof light and warm white for head lights and tail lights.
Here is video of working test board
Now I can start designing PCB. It will future 3 red 3 blue and 8 warm white for final set up.
Using one 555 timer to run two cd4017 in order to get two different strobe effects. Blue and red for roof light and warm white for head lights and tail lights.
Here is video of working test board
Now I can start designing PCB. It will future 3 red 3 blue and 8 warm white for final set up.
Good luck getting it to fit! 
Work still in progress but here is what I got so far actual size is 2" x 2.25"
One timer can drive multiple boards (hopefully, not tested yet) or each can have one for different timing
and each board counter can be configured differently using jumpers
Between work and my kid I don't have much time to play with it as much as I would like, but today I finally got laser printer and was going to etch two boards for testing. Unfortunately the paper I'm using is not the best for toner transfer process and it turned into disaster. I'll get better paper tomorrow and give it another try.
Prep the board by rubbing off unwanted elements with acetone and very fine steal wool
laser printed circuit ironed on the pcb board ( kind of like iron on shirts patches)
then soak under water and peal the paper off leaving toner on the board
Mixing 2 of hydrogen peroxide with 1 of hydrochloric acid and submerge the pcb till acid eats away all the exposed copper
Remove the board from acid rince under water and wash of the toner with acetone to expose the copper circuit.
there is bunch tutorials on youtube
laser printed circuit ironed on the pcb board ( kind of like iron on shirts patches)
then soak under water and peal the paper off leaving toner on the board
Mixing 2 of hydrogen peroxide with 1 of hydrochloric acid and submerge the pcb till acid eats away all the exposed copper
Remove the board from acid rince under water and wash of the toner with acetone to expose the copper circuit.
there is bunch tutorials on youtube
Sounds like something I did to make my Dummy Alarm. It's a shame you already made your board, I was going to ask if you could record the steps you took if possible.
Got it all put together last night and find lil problem there when I went to solder the return wire on the counter. Got it fixed and she works like a charm. Its definitely still on the big side so I'll try to shrink it and maybe connect more of them together. Since I have to do it again I can record my steps and maybe make small tut or something...
Looks great, even if still big it's something you can put into another remote control or model vehicle and give it to somebody as a gift. How much smaller are you aiming to make it? I'm glad somebody else has been working on these projects. I probably won't be making anything within the next year or so.
Just a small update , I got two different variants today both smaller then original
Smaller is the same and uses resistor per LED meaning u can use one or 4 LEDs per chanel total of eight LEDs.
The smallest is set to run 2 LEDs per resistor so you have choice to run the board with 2 or 4 LEDs per chanel total of eight LEDs.
Smaller is the same and uses resistor per LED meaning u can use one or 4 LEDs per chanel total of eight LEDs.
The smallest is set to run 2 LEDs per resistor so you have choice to run the board with 2 or 4 LEDs per chanel total of eight LEDs.
hey i new member here . call me rendra im from indonesian and sorry for bad languange ?? that's nice job for build police flasher circuit?? but the 4017 flash twice on pin 3 and 4 .. ? max flash is 3. pin 3, 4, and 10 . then how build with more long flash ?
how about 3 555 timer and unknown material to build ?? BTW what your programs/software pcb and what type paper for etching the pcb ?
here the classic police flasher 2 555 timer by livewire
how about 3 555 timer and unknown material to build ?? BTW what your programs/software pcb and what type paper for etching the pcb ?
here the classic police flasher 2 555 timer by livewire
Mission accomplished with grate success. High five...
Yes it is very cramped and soldering was major pain in the anus since some of those tolerances are so tight. My $10 soldering iron wasn't much help aether.
It needs new schematics since I run those LEDs in parallel and also IC socket for timer needs to be modified (pins 5 & 7 must be removed) So basically I have to make pdf with instructions and schematic.
You really are cramping them in together for space Looks nice. Are you going to upload the file you have for making these once your done so others can use it?
Looks nice. Are you going to upload the file you have for making these once your done so others can use it?
It needs new schematics since I run those LEDs in parallel and also IC socket for timer needs to be modified (pins 5 & 7 must be removed) So basically I have to make pdf with instructions and schematic.