Looking for some help in determining the best, and cleanest way to achieve three different modes of operation for my red laser build.
It's a red, 16X DVD diode, running 3.2V (two E2 lith. primaries), with a 2.7 Ohm resistor in series with the pos. diode leg, and a 100uF cap in parallel across the pos. and neg. legs. I stuck a DPDT alongside a momentary button for multiple switching options. In the first iteration, shown below, I really screwed the pooch, and blew my first diode with a dead short to the batteries.
Got another diode, fixed the switching to allow constant on with the toggle thrown forward, and the momentary button can be used with the toggle in the opposite direction. Problem is, the button also works when the DPDT is in the middle position. Of course, I meant for the middle position to be complete off... ah, a day in the life of an EE noob.
The picture you're about to see, will make even the most basic EE 101 student cringe. Ignore the dead short from batteries to laser diode... as mentioned, that's been fixed, but leads to where I'm at now. This is just to show the DPDT, and the button. The bottom two wires come from the batts, and the top two go to the laser.
Unfortunately, I have no good pics of the present wiring... but hopefully it won't be neccessary to sort this out.
What would be the proper way to hook all this up to allow for all three modes?
It's a red, 16X DVD diode, running 3.2V (two E2 lith. primaries), with a 2.7 Ohm resistor in series with the pos. diode leg, and a 100uF cap in parallel across the pos. and neg. legs. I stuck a DPDT alongside a momentary button for multiple switching options. In the first iteration, shown below, I really screwed the pooch, and blew my first diode with a dead short to the batteries.
Got another diode, fixed the switching to allow constant on with the toggle thrown forward, and the momentary button can be used with the toggle in the opposite direction. Problem is, the button also works when the DPDT is in the middle position. Of course, I meant for the middle position to be complete off... ah, a day in the life of an EE noob.
The picture you're about to see, will make even the most basic EE 101 student cringe. Ignore the dead short from batteries to laser diode... as mentioned, that's been fixed, but leads to where I'm at now. This is just to show the DPDT, and the button. The bottom two wires come from the batts, and the top two go to the laser.
Unfortunately, I have no good pics of the present wiring... but hopefully it won't be neccessary to sort this out.
What would be the proper way to hook all this up to allow for all three modes?