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Perfecting the Raspberry Pi method?

Posted: Thu Aug 06, 2015 8:20 pm
by DR TEAMCAST
I've seen a few people attempt it but i'm not sure if they work. Is there any reason anyone hasn't made a plug and play sd image for a cheap hardware modem? If there was a confirmed working image it could get people online for less than $50. And thats if the price for the b+ doesn't drop

Re: Perfecting the Raspberry Pi method?

Posted: Mon Aug 10, 2015 11:31 am
by Favrenation
I have a cheap usb rosewill modem that works out of the box in linux (at least for x86 computer). I can take a look to see if I can setup a server on my pi. From what i remember, the guy who made it had a button on one of the gpio pins which lets you connect easier but that isn't something that everyone can easily do. You could do an ssh or web command if you wanted to get fancy.

Also, from what I remember that modem still needs a line voltage inducer even on a model A modem. I could be wrong as I haven't used this method in awhile.

Re: Perfecting the Raspberry Pi method?

Posted: Mon Aug 10, 2015 12:56 pm
by petter3k
As of right now the only method is to manually answer the DC's call to the usb modem with mgetty in order to achieve a connection. A bit of a hassle for many.

A guy over at AG is working on some custom software which automates this process and he mentioned creating and uploading a working image for others to use aswell.

Re: Perfecting the Raspberry Pi method?

Posted: Mon Aug 10, 2015 1:08 pm
by DR TEAMCAST
Wow cool, hopefully he can find a hardware modem that eliminates the need for voltage as well

Re: Perfecting the Raspberry Pi method?

Posted: Fri Aug 14, 2015 6:49 pm
by petter3k
My guess is you would still need either a phoneline simulator or a line voltage inducer either way.

Re: Perfecting the Raspberry Pi method?

Posted: Sat Aug 15, 2015 5:59 am
by kazade
I think I'm that guy! :)

Yeah so you'll still need a voltage inducer, although I've done a lot of testing and now know the right setup to get an inducer to work on PAL modems by doubling the voltage (2 9v batteries in series).

I have a script running on my Pi which automatically answers the call. I've tested this on PSO and it works great.

Before I upload an image I need to get the script detecting hang up, and starting on boot. Unfortunately real life is getting in the way ATM but I'll do this ASAP! I'll dedicate a website to this when I'm done so everyone can get online :)

Re: Perfecting the Raspberry Pi method?

Posted: Sat Aug 15, 2015 11:33 am
by DR TEAMCAST
That's pretty awesome. Is it for a specific modem or a generic conexant usb?

Re: Perfecting the Raspberry Pi method?

Posted: Sat Aug 15, 2015 4:22 pm
by kazade
I'm using a generic Conexant, but if I figure out how to detect which serial device is the modem reliably then it shouldn't matter as long as it's a USB voice modem.

Re: Perfecting the Raspberry Pi method?

Posted: Sat Aug 15, 2015 8:47 pm
by SMiTH
Looking forward to this method being perfected.

Re: Perfecting the Raspberry Pi method?

Posted: Sun Aug 16, 2015 5:22 am
by Anthony817
This is going to give the Dreamcast a new lease on life for many on broadband only connections! Very interested in this project please keep us updated.