I got your number, written on the back of my hand

[hirez]

http://www.jarkman.co.uk/catalog/random/hirezhandset.htm

Twenty minutes hack, slash, swear and solder. I'm very pleased with it, and indeed myself.

Comments

[deviblue.livejournal.com]

oh that'll be fantastic...you mobile goes off and you pull that out of your pocket and use it...heh...make sure you're ring tone is set to oldfashined bell phone ;)

[hirez.livejournal.com]

Oddly enough, I sampled the ringer on the donor phone before dismembering it... :)

(You want one?)

[juliann.livejournal.com]

You could've, ya know, just BOUGHT one :)

[hirez.livejournal.com]

:p

If there's any fun in merely purchasing things, I have yet to discover it.

[perlmonger.livejournal.com]

Nah. It should be made of bakelite.

[hirez.livejournal.com]

I wish I knew where the Old Phone mountain was kept - I have a bakelite phone somewhere that's ex Portuguese Telecom, but I have different plans for that one that involve keeping it wholesale rather than butchering the thing.

[mr-tom.livejournal.com]

I think that there may have to be a demo of this fine piece of engineering at a pub in Norfolk.

[hirez.livejournal.com]

Absolutely.

[bloodnok.livejournal.com]

That's just so right.

[sarah-mum.livejournal.com]

Long day: I looked at that for ages wondering what was so clever, then AH!

Nice.

[red-mel.livejournal.com]

nice. I like a man who can do a tidy soilder.

[silverskull.livejournal.com]

Thought about this after I left last night so thought I'd catch up with you here. You do welding don't you? If the answer is yes I may have an interesting project idea forming. Let me know :)

[hirez.livejournal.com]

I have been known to attach one lump of metal to another badly, yes.

[silverskull.livejournal.com]

Umm fancy making a bit of a custom drum rack for my kit???

Obviously cash and time will have to be taken into account...

[hirez.livejournal.com]

Quite possibly. What have you in mind?

[silverskull.livejournal.com]

I have been getting some bits together to mount the toms and cymbals on but have a little bit of a concept I'd like to try for the video (and possibly live) work coming up.

I'll do a sketch and post it up or pop round for a feasability chat

[silverskull.livejournal.com]

Oh and the handset is so wrong, that it's right. I love it.

[thegreatgonzo.livejournal.com]

Could you post a circuit diagram please?

[hirez.livejournal.com]

Circus diagram? Um... I guess I should have taken more pictures during the build, since there's nothing big or clever going on.

It went like this:

Find cheap & nasty wired-handsfree earpiece-thing from local mobile-tat showroom. Carefully shell the microphone portion so you can see which pairs of wires go where. (The one I used had grot-coated wire that made it look uninsulated. The grot melted back when I tinned the stripped ends.) Cut off the earpiece, leaving enough wire to work with.

Shell the phone handset and unscrew the speaker unit. I snipped the bulk of the terminals off the ends of the wire and soldered the earpiece wire-ends to what was left, then glue-gunned it to the remains of the speaker unit that had been dismembered by jarkman. Your mileage may vary. Whatever works in getting the ear-squeaker in the right place.

Next, shell and dismember the handset microphone. The one in that phone had a handy plastic assembly that was ideal for glue-gunning the hands-free microphone to. Solder up the microphone wire-ends to the handset terminals.

At the Nokia end, you should be able to open up the pop-port (or whatever it's called) connector and match up the colours of the pairs for mic. and squeaker. For example, our mic. pair was red & clear)
Solder up those pairs to the relevant coloured wires at the far end of the handset cable. Insulate, heat-shrink and/or strain-relieve to taste.

It sounds a lot more complex than it really was. Five minutes staring at the pile of bits should make it all obvious, and the parts cost makes getting it wrong mostly unimportant.

There's probably a less hacky way of doing it, but what the hell. Have fun.

[thegreatgonzo.livejournal.com]

Cool, I am going to have to shoot myself for not seeing that simple solution. I expected there to be circuits to interface between the phone speaker and mic and the phone electronics, but using those from the hands-free that are already matched is a far smarter idea.
I really need to get out of management it fries my brain.

[hirez.livejournal.com]

I thought along those same lines myself...