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Old 28 July 2018, 22:26   #1
danielj
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Open Source WiFi Modem - FreeFi232

Hello

There's been a proliferation of WiFi modems of late for retro-hardware, letting it hook up to internet BBS's. However I was rather disappointed to see that there were no open designs, given that for the most part (other than bells and whistles) they're not particularly complicated beasts - just an ESP8266 module and a level shifter.

Anyhow, in light of that, and as there's open source firmware knocking about just ripe for tweaking, I thought I'd push a design out that is completely open and anyone can build. You can get 20 PCBs for around £7.50 if you order them from JLC-PCB.

Some of the existing designs have limited implementation of RS232/Modem features, and don't get on with all bbs software, so this provides for all of the standard RS232 signals - RX/TX/RTS/CTS/DSR/DTR/DCD/RING

Entire project is here: https://github.com/stardot/esp8266_modem/

I've started putting build instructions and BOM into the wiki.

I'm sort of at the last stage of testing, there was a bug in the previous iteration which I've managed to bodge a fix on to, and I'm now waiting for the tweaked final PCBs to turn up, but I wanted to gauge interest in the amiga community and see who's actually using these things and if anyone is happy to test? Both running a BBS and using them to "dial in".

I'm not personally intending to make these for sale, but as the design is open, any one can! And if you want to make them yourself or for a group of friends, you can probably do so for £15 or so - quite probably less (depending on the number you make at once).

Thoughts/input/suggestions welcome!
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Old 29 July 2018, 18:55   #2
kirk_m
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Thanks for sharing! I've seen some selling these devices for over 80 GBP... glad I can find one to build myself.
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Old 29 July 2018, 20:06   #3
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Thanks @Danielj
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Old 29 July 2018, 21:24   #4
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All the way from stardot! Welcome!
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Old 29 July 2018, 22:32   #5
danielj
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'ello chap
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Old 29 July 2018, 22:50   #6
Sandancer
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I have a ESP8266 ESP-12E CH340 WIFI 4MB CP2102 Dev for my PS4, would this one work on the Amiga 1200
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Old 29 July 2018, 22:57   #7
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I'd love to have something like this
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Old 30 July 2018, 07:58   #8
danielj
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Quote:
Originally Posted by Sandancer View Post
I have a ESP8266 ESP-12E CH340 WIFI 4MB CP2102 Dev for my PS4, would this one work on the Amiga 1200
Yes, it should just plug straight in to the rs232.
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Old 30 July 2018, 09:43   #9
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If someone wants one I have a spare one doing nothing - one of these https://www.ebay.co.uk/itm/Retro-com...-/192601867351

£30 ?
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Old 30 July 2018, 21:27   #10
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My to do list includes making one of these but as a SLIP device using this ESP firmware https://github.com/martin-ger/esp_sl...ster/README.md
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Old 30 July 2018, 23:58   #11
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Is it just for bbs or can you do HTML, web browsing. Could I get on aminet with my Amiga using one of these?
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Old 31 July 2018, 01:03   #12
idrougge
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I built this one for general TCP/IP use via the above mentioned firmware.

http://eab.abime.net/showpost.php?p=...4&postcount=22
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Old 31 July 2018, 08:14   #13
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Where did you get slip.device from? The AmiTCP package?
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Old 31 July 2018, 11:47   #14
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It comes with almost every TCP/IP stack.
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Old 31 July 2018, 22:53   #15
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So what's running slipd in "other end"? The esp8266 itself?
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Old 31 July 2018, 22:54   #16
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Yes it's a bridge to the WiFi network the esp8266 is connected to
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Old 31 July 2018, 22:58   #17
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A bridge, huh? Sounds interesting, IP-settings-wise
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Old 31 July 2018, 23:24   #18
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Brill sound cool )
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Old 01 August 2018, 00:47   #19
idrougge
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Quote:
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A bridge, huh? Sounds interesting, IP-settings-wise
It's totally transparent. As far as the Amiga is concerned, you're connected to a (null) modem, and you telnet into the ESP to make it connect to a WLAN.
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Old 01 August 2018, 02:21   #20
kolla
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That sounds more like traditional "dialup" setup, not bridging, I do the same, only with PPP and Pi zero.
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