The 'Simple' Wifi Modem v2 -BLACK EDITION- it's a device to connect a computer with an RS232 serial port to a telnet BBS. It does not use an analog phone line but internet through a wifi connection. Behaves like a Hayes dial-up modem, and it is designed and built for old computers; I use it with my first computer ever (still working!): a Sinclair Zx Spectrum and, being myself a retro-collector, also with a lot of other different machines (you can read about my collection on www.museo-computer.it).

My idea was to create a device with the same look and feel of a real modem: a lot of big, flashing, red LEDs and only a few SMD components.

In this latest revision i have rotated the usb connector on the back (as requested!) and added a 3d printed case.

If you want to buy it without case: https://www.ebay.it/itm/265519698197

Main characteristics:

- Emulation of a Hayes modem

- DB9 serial connector (female)

- Uses 5v micro USB cable port for power (USB cable not included)

- LEDs for status, as in old modems

- Hardware flow control

Since revision 2 hardware flow control is fully implemented.

The BLACK EDITION is a special batch to honor all the black computers (starting from the Sinclair Spectrum!)

Here: https://www.museo-computer.it/en/wifi-modem/ you can find detailed instructions and view it in use with some retro computers.

And if you want a bbs to connect RetroCampus BBS developed by Francesco Sblendorio is one of the most interesting: available in Italian and English with many terminal configurations (PETSCII, 40 or 80 columns, ANSI, ASCII and more) it’s now also a gateway to to ChatGPT (only for patreon subscribers).

Its design is open source and you can find all the schematics and full instructions on https://github.com/8bit-bruno/WiFiModem

The software installed is a fork of Zimodem written by
Bo Zimmerman (https://github.com/bozimmerman/Zimodem).

It has just been modified to support this device.