Voice Projection Unit Alternative Ground Hookup

After doing a little experimenting yesterday I realized that this is another option for hooking up the ground wire for the Annunciator Loudspeaker. It's simple and will save running extra wire depending on how far away you are placing your loudspeaker from the Voice Projection unit on/off button.

Voice Projection Unit Update II

OK as I kind of sort of suspected those 4 mini-push buttons on the face of the board from the hand held unit are indeed momentary switches, I can only assume after my wire test that there must be components on the board that make them act like latching switches when pressed. This is all good because my thought of using simple SPST Relays in conjunction with the Switch Pod Buttons is valid and should work, I have very little doubt about it not working after conducting my simple wire test of soldering on a couple of wires to the back of the board for the button connection points, powering up the board and simply touching the ends of the wires together, it worked like a dream, so yeah I'm sure a Relay will do the trick.

I also detached the Microphone and indicator LED from the board and migrated them over to the small piece of "ProtoBoard" I had picked up earlier this morning. I powered up the board again to give it another test to make sure all of my mucking about was still working and yes everything looks and works great. Now all I need to do is figure out a good way to mount these two boards into the Upper Console, extend the wires and make a Molex Connector to make the job of installing the Upper Console easier. I have made a video demonstration of what I have done here so I'll upload that shortly so you can see first hand what I have done in video format.

Voice Projection Hand Held Unit Dismantle

I dismantled the hand held unit of the "Annunciator 2 in 1 5 tone / 3 tone electronic siren with mic." It appears to be pretty simple, just like figuring out the Switch Pod Buttons I should be able to do the same here and add wires from the button terminals and run them to the switch of a SPST Relay to duplicated what the buttons are doing on this simple circuit board. The micro or mini button on the ends of the two black wires look to be a simple ground momentary switch, in either case a Relay will do the job for that button too. The side button for the Mic appears to be also a simple micro/mini momentary button so again another simple SPST Relay should do the trick. Now those 4 other micro switches I'm not sure if those are momentary buttons or latching, those may be a bit tricky trying to figure out a good way to use my Switch Pod Buttons for those 4. I suppose the other few things are the indicator LED light, Volume Control Knob, the Mic, those items on the board I will need to think about soldering them off of the board, extending their wires and relocating them somewhere. I mentioned in my last post about the Mic being installed into the upper console somewhere, that is certainly a possibility. I suppose the Volume Control Knob could be located beside the Mic along with the indicator LED light. The Circuit board I could mount in up inside of my Knight Rider Dash securely to another bracket I could glass in somewhere.

It's going to be a bit of mucking about with my Multimeter to figure out what is what for sure on this little circuit board and some playing about with some soldering and finer gauge wires, and some fiddling about with Relays but if I'm not mistaken I think it can be done.

K.I.T.T.s Voice Projection Parts Arrive

K.I.T.T.s Voice Projection parts arrived today in the mail. Now this is just something I am going to experiment with. My plan is to see if I can dismantle the hand held unit and figure out it's buttons. My thought is that I may be able to hook up the button connections to a few of the buttons on the Switch Pods Unit and perhaps hide the microphone part of the device into the Upper Console. The Switch Pod buttons I should be able to assign 4 of them to the built in sound effects that came with the Loud Speaker and hook another button to the Voice Projection function. I'll have to test it out first and then see if I can take apart the hand held unit and see if I can fiddle with in relocating it's internal guts to fit my purpose for K.I.T.T. Given my limited electronics knowledge this is going to be another challenge but I will keep my progress well documented so if you want to attempt the same sort of set up, and as long as mine does not blow up then you'll be able to easily follow what I have done and maybe even improve on it. That being said I'm pretty sure what I am going to try and do has already been done but I have NOT yet seen anyone show it.