PLA Forums
Other Stuff That Has Little To Do With PLA => Techinical Shit => Technical Support => Topic started by: WeeBo on November 15, 2011, 11:08:19 AM
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Hello, long time lurker first time poster.
I thought this would be a great place to ask, I googled a bit on a the topic but the results were crap.
I acquired an older Bell payphone, did as much as I could with exploring the innards, but now I need to do more with it. I have a few spare cell phones. My idea was to stick a cellphone inside and be able to use the handset and dial pad on the front of the payphone. Reception might be a little iffy, but I was thinking of using the outer shell/housing as a make shift antenna.
I was thinking of using the handset to audio jack hack inside the case, and wiring the buttons to the stripped down push pad inside the cell phone, alas at the moment all I have are touch screen phones that work, wonder if that would still be possible. I think hanging up and making the phone ready to dial might be a challenge, as the number has to be dialled before the call button can be pressed.
The hanging up could be controlled by wiring the cradle to the actual hangup button, so when the receiver is put down the contact is made to the hangup/power pad on the stripped down phone.
If anyone has any ideas or suggestions please feel free to contribute, still don't know if I'm making this more comlicated than I have to :)
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Welcome to the forums!
http://phonelabs.com/prd05.asp (http://phonelabs.com/prd05.asp) this thing looks old and I didn't read much of the page, but I think products like this still exist for more modern cell phones, where you can put your cell phone into a dock when you get home and it runs all of your home phones from your cell phone.
You might also consider doing all of this with some kind of a blue tooth controller instead of an actual cell phone.
The way I run my pay phone is by using MagicJack. It's $20/year for a VoiP line with unlimited everything. I know that has nothing to do with what you're asking, but that could be another option if you just want your pay phone to work.
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Hi rbcp,
I've looked into the cradles/docks as well (that page in particular was one of the products), but I thought that would be too easy. :)
I thought of putting all the guts in the coin change box since than I just have to take out the box and change the battery that way, leaving it "wireless"...unless the handset won't work without some sort of power, but I think the 3.5mm jack should be plenty.
I also think that I will have to use either the # or * key to actually dial the number...but I might miss those keys :(
I have a few cdma phone laying around that I want to use since than I can just keep everything one number.
EDIT - I didn't think of the ringer....crap.
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id probably just use something like this http://www.myxlink.com/index.aspx
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id probably just use something like this http://www.myxlink.com/index.aspx
Hey, thanks for the suggestion as well. Both of the products mentioned by you and rbcp are great, but the idea is _not_ to use them. That's the challenging part :)
It's more interesting when you take shit apart and figure it out yourself :) Where is the fun of just plugging something in :)
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then you are going to have to be handy with a soldering iron, i would say to hardwire each button on the phone to its corresponding button on the phone...
i would probably remove the switch hook since it would be useless and put 2 additional buttons there, one for send and one for end... or you could use a 3 pole momentary switch where one direction would be send, and the other direction would be end... if your machine skills are good enough maybe you could integrate this with the coin return knob...
or.. you could set up a relay to the switch hook that when you hang up the handset it momentarily triggers a relay that activates the end button..
EDIT - but i still think just using a bluetooth adapter would be easier and more functional... but if you got the free time and just want a project..
post some pics, or a youtube video of your progress if you decide to do anything with this..
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Hey,
see that's what I'm talking about. Soldering is not an issue, not great with sm but regular soldering.. I can pull it off :)
I really like the idea of the relay, I thought of using the coin return button to end the call, since that would be pretty simple, once its pushed in far enough, it makes contact call is ended. I'm not too keen on adding buttons as I want to keep this looking as original from the outside as possible :)
I have two spare arduinos laying around that I thought of throwing in there since I could just wire in the buttons to the I/O pins.
This is just a side project, I would love to have this usable on the wall, or take it with you anywhere...now that's a wireless phone :D pfffttt bag phones.... I got a payphone strapped to my back.
As well,. I always document my work...mostly for my own sake to figure out where some of the small parts belong, I'll try to keep this updated, thanks for the input
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i recommend the relay because with out it the end button would be constantly held down when the phone was on hook...
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which in turn would shut the phone off.....My own mediocre attempt at humor has been highly amusing to myself.
This is why I was looking for input :) thanks, as I have an axicom mini/hobby relay, I think I'll end up using that.
Well you just saved me some issues later on, thanks :)
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A little update,
Found a phone sans touch screen, i knew I had a few,
I got it all ripped apart at the moment, gonna start soldering the cell keypad to payphone pad, I think I got it figured out, at the least...at the end of the day I'll be able to dial the cell phone with the surrogate pad.
Taking pics as I go along if anyone cares :)
Might have a vid posted tonight...depending how far I get.
The soldering is gonna be a pain as I don't have any solid core wiring just stranded (using scraps)
EDIT : I Forgot how much I love doing soldering with shaky hands after three cups of coffee...and i forgot to check if the cell phone powers on.. hindsight?
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i just love relays... i have really only had experience installing them the past year or two... mostly just for door buzzers, but eventually i would like to set up some type of smart home wiring using a bunch of relays - a bit pointless to do when i am renting an apartment but who knows perhaps some day, if i can get my wife to go along with it (or do it when she is gone and not tell her, then call up and remotely mess with the lights when she is home and I am away - ive had fun caller ID spoofing her from various family members and government agencies)
i would love to see progress pix or video of your project when you are done..
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Well here is a quick video of the phone keypad and cell....this is just a quick vid, I'll post everything else when it's done :)
http://www.youtube.com/watch?v=CyNqsQHLAIc
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i just love relays... i have really only had experience installing them the past year or two... mostly just for door buzzers, but eventually i would like to set up some type of smart home wiring using a bunch of relays - a bit pointless to do when i am renting an apartment but who knows perhaps some day, if i can get my wife to go along with it (or do it when she is gone and not tell her, then call up and remotely mess with the lights when she is home and I am away - ive had fun caller ID spoofing her from various family members and government agencies)
i would love to see progress pix or video of your project when you are done..
Get a few arduinos or even just one, a net shield, a bunch of photoeyes and LED's and make a make shift security system, you can control anytyhing. I have a few pics of when I did mine, they're not great, it was just of the WIP but I can post them. It is so much fun, you can also attach temp sensors, light sensors, make it do stuff by sms...I could keep going, arduino is a great project starter. :)
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looks like you made a lot of progress already...
seems like all that is left is mounting it and figuring out how to get the audio into the handset... maybe using the headset jack might be easier than trying to connect to the internal mic and speaker of the phone itself?
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Cool project there Weebo! Looks real nice. *bangyourhead*
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Thanks guys, the basics are almost done, I can dial out, hang up reset redial, and you have to use a quarter to dial out, it won't work otherwise :) I still wanted it to use a coin. Although when you hang up you get the coin back, that way I figure you can reuse the same coin...cell bill is good enough My own mediocre attempt at humor has been highly amusing to myself., but the wiring can be changed at any time. The wiring is a horrendous mess the cell phone "umbilical " cord is too damn long and I use masking tape everywhere, couldn't find electrical tape in my mess....but since it's all going to be inside...who cares :)
Right now I'm just taking a break from doing the headset, it's pissing me off, I can hear everything but can't record my voice. And I hate splicing headphone wire, it's so brittle and coated in some resin.
I'll try to get some pics up soon. :)
EDIT update - I can hear and record with the handset hooked up to the handsfree on the cell. Alas it's really quiet, I wonder if it's just not getting enough power, since when I was only hearing audio it was crisp and clear. HMMMM... Also damn Nokia for not following the standard 4pin 2.5mm jack pin out My own mediocre attempt at humor has been highly amusing to myself.
Update AGAIn - IT IS FINISHED!!! :) Video as soon as I finish doing a quick edit. :D
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Rough clip of the finished product, well, still not together, but it'd be boring to see it without the innards exposed :)
I can make these for sale, you supply the payphone and cell phone :) Most mobile payphone around.
http://www.youtube.com/watch?v=v5cOkETPqIU
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nice... so the send button is wired to the coin mechinisim (sp?)
you set up a relay to the switch hook?
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Yeah, I'll post some pics of the wiring, just trying to get them shrunk down and organized.
It was really quite dirty how I did it, the image is posted on bottom. I used some flexible adhesive to mount wiring inside the coin separator. Makes contact between the calling buttons, if the change box was easier to get at I would have used the whole setup, but decided to go with KISS and keep it simple.
The ringer isn't set up yet, the vibrator motor that I want to hook into on the board of the cell phone has melted connections (well it has melted connections now.... :S) they were really tiny, and I wanted to move on. I just have to re clean the contacts and re solder. I just didn't want that to hold me up. But oh no worries, the relay and the ringing is coming, I can't leave unused bells like that in a phone :)
Edit - Issues with ringer - It need 90V...I am so not gonna get that out of a cell battery. I really don't want to attach any other source(external) of power....if I have to daisy chain 10 or 12 9v batteries I will My own mediocre attempt at humor has been highly amusing to myself., there is room :)
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not sure if putting 9V batteries in a series would provide you with ringing current or not, since ringing current is 90VAC while putting 10 9V batteries in a series would give you 90VDC... it might work, just not sure...
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I thought the phone itself converted DC coming in into AC for the ringer, being isolated it doesnt harm the other components in the phone.
I'll try it out, it doesn't hurt to try :)
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the 90VAC ringing current is put on top of the -48VDC battery that is on the phone line to ring the bells... not sure how magicjack provides the current to ring a phone... but perhaps if your 10x9V battery does not work well you can try to figure out how a magicjack gets this accomplished - since a USB port only provides something like 5VDC... (although i am not sure if a magicjack would have enough current to ring real bells in a telephone or just an electronic ringer)
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Well the 9V's were a dud, +1 for you -1 for me My own mediocre attempt at humor has been highly amusing to myself.
I'm thinking of just changing the relay on the bell ringer itself so it uses less voltage, might not be as loud and sound a little slow but damn it, I want it to work My own mediocre attempt at humor has been highly amusing to myself.
Appreciate all the feedback nyphone