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Post by RaymondDay on Sept 2, 2005 11:29:07 GMT -5
This works. This is the one I am using. I got this old file off Q-Link a long time ago and this is what I made. I just used 3 wires to my Lantronix UDS-10. I am sure that's all you need to a RS232 on a PC too. So you would only hook up 2,3, and 7. Switch 2 and 3 so send goes to receive and same with the other one. 7 is ground.
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Post by Keith Henrickson on Sept 2, 2005 11:50:25 GMT -5
I need to work out a MAX233/235 one. It's literally one chip, plus the card edge connector and the DB9. Diagrams are probably up for a MAX232 one, but that needs external components.
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Post by Niedobry on Sept 2, 2005 12:36:13 GMT -5
I need to work out a MAX233/235 one. It's literally one chip, plus the card edge connector and the DB9. Diagrams are probably up for a MAX232 one, but that needs external components. I've been using this interface for a few years now: members.tripod.com/~ilkerf/chard/rs232c96.txtIt uses one 7404 hex inverter, a user port connector and a DB9. I've used it at 9600 bps with Novaterm with no problems.
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Post by Jeff Ledger on Sept 2, 2005 12:45:54 GMT -5
I'm marking this thread as *sticky* for interface builders.
Jeff
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Post by Niedobry on Sept 3, 2005 10:23:25 GMT -5
I found an old printout from a GEOPaint file I got off of Qlink years ago. Thought it was appropriate to put up here. I was very excited to have a blue printer ribbon. Larger version can be downloaded here: members.cox.net/bbrindle/Qlink/easyc64rs232.jpg
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Post by xlar54 on Sept 5, 2005 10:47:12 GMT -5
Where can you get a userport connector without cannibalizing a Commodore modem?
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Post by RaymondDay on Sept 5, 2005 11:10:21 GMT -5
I just tested out a old Data 20 printer interface. It works! It was made for old RS232 printers. I had to put a gender changer on it. But it works. It's small and I all so have 2 that say Smith-Corona on them not Data 20. They were made for old RS232 printers. I still have a 24 pin printer with a RS232 interface. Beside the standard one. When I tested it with snapterm doing a AT I just got back junk. But I got on Q-Link and it works very good. Here is what the inside looks like. The Smith corona one. You can see Data 20 on the board. So smith corona must of got the stock off of data 20.
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Post by Niedobry on Sept 5, 2005 15:41:06 GMT -5
Where can you get a userport connector without cannibalizing a Commodore modem? Digikey has them. The connector is a 12/24 pin 200" spacing with .156" contact centers. (5.08mm spacing 3.96mm contact centers.) Here are two part numbers for two different brands: EDC307240-ND $2.45 each S5124-ND $4.00 each The EDC307240-ND has solder tabs on the component end and might be a little easier to deal with.
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Post by Niedobry on Sept 5, 2005 15:43:11 GMT -5
That should be .200" spacing...
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Post by RaymondDay on Sept 7, 2005 16:44:24 GMT -5
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Post by RaymondDay on Sept 7, 2005 17:02:44 GMT -5
At this Expo coming up the 17th. I would think people will be there selling old modems for cheep. Even if you don't want to mess it up you could just make a cord come from it and use it ether way.
I would think people will be on PC at the Expo and if you can't make it can asked if there are any RS232 interfaces or card edge connectors.
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Post by xlar54 on Sept 7, 2005 17:40:43 GMT -5
Very good - will look into this. It was about to hack into an Aprotek modem... but I just hate hacking into Commodore hardware, at least until it legitimately dies. I dont even want to add Jiffy DOS to anything...
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Post by Jeff Ledger on Sept 7, 2005 20:10:41 GMT -5
Very good - will look into this. It was about to hack into an Aprotek modem... but I just hate hacking into Commodore hardware, at least until it legitimately dies. I dont even want to add Jiffy DOS to anything... Wow! Jiffy Dos is an *original* upgrade! (But I did secure my original chips very safely!) Jeff
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Post by RaymondDay on Sept 10, 2005 11:22:30 GMT -5
I found a old Jameco RS232. It works real good. Here is a photo of it with my 3 wire cord and my Lantronix UDS 100. On the bottom is says "JE232-1 REV A" for the 4 dip switches on the bottom they are labeled DSR, DTR, RTS, and CTS. On the top it says "COMMODORE S232 ADAPTER JE232CM Jameco electronics" Looks like a lot of RS232 Adapters can work.
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Post by Jeff Ledger on Sept 10, 2005 15:20:04 GMT -5
I built and tested the following interface today using TCPSER4j with 1200baud/Hayes/auto settings and pleased to report that it worked perfectly. Anyone with a userport connector (I used an old modem) and around $5.00 worth of radio shack parts should be able to get onto QLink using a 64/128 My next task, create some kits.. Jeff
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