This document describes a WiFi modem device that allows a Commodore 64 to connect to the internet over WiFi. It contains an Arduino Uno, OLED display, and RN-XV WiFi module. It supports Hayes emulation, menu-driven interfaces, TCP/IP networking, and optional standalone use of the Arduino. Firmware is in beta but provides dialing, incoming calls, and configuration over WiFi. The device costs $150 and support is provided online.

3.  User Port device
 Hayes emulation or menu-driven
 All RS-232 lines (RTS, DCD, DTR, RI, etc) connected to User Port
 802.11 b/gWi-Fi
 OnboardTCP/IP stack includes DHCP, UDP, DNS, ARP, ICMP,
HTTP client, andTCP
 SecureWi-Fi authentication viaWEP, WPA-PSK (TKIP), and
WPA2-PSK (AES)
 UP9600 hack supported
 Onboard MicroView (Arduino Uno with OLED) - Programmable
 64 x 48 OLED display
 Reset Buttons for C64/MicroView/Wifly

4. C64
Access
Point
RN-XV
“Wifly”
Module
“MicroView”
Arduino
Uno+OLED
Serial Serial 802.11
Wi-FiRS-232
Signals
Terminal
Program
(Novaterm,
Striketerm,
CCGMS, etc)
Arduino Sketch
(Hayes Emulation,
Custom)
RN-171 Firmware
(802.11Wi-Fi,
TCP/IP Stack,
DHCP, DNS, etc)
Optional Direct Connection for Debugging/Configuration
GPIO

5.  Default: As per block diagram
 Standalone: Power jack provided for +3.7V to +16V to use the
MicroView and RN-XV on their own
 Interfacing: Remove RN-XV Wifly and use MicroView’s GPIO
to interface C64 to outside world (analog input, PWM output,
digital I/O and I²C) – all pins broken out along top of board

6. “Menu” Firmware:
 Simple Menu-driven interface
 Dial Out (to a BBS orTelnet Host i.e. Linux)
 Receive Incoming “calls”
 Configuration of SSID and misc. options through interactive
prompts

7. “Hayes” Firmware:
 Emulates a Hayes-compatible modem with AT commands, +++, etc.
 Dial Out with ATDT
 Receive Incoming “calls” (potentially run a BBS)
 Sends RING
 Auto-answers or waits for ATA
 Configuration of SSID and misc. options through extended Hayes
commands i.e. AT&SSID=

8. Features common to both:
 Autostart option: Will automatically connect to a given host
i.e. CommodoreServer when powered on
 Phone book (stored in EEPROM)
 Configuration (stored in EEPROM)
 Automatic baud detection at startup
 ASCII and PETSCII Support

11.  Small team of beta testers working with prototypes
 Firmware in beta state but quite usable
 Code and documentation onGitHub
(https://github.com/LeifBloomquist/WiFiModem)
 Yes, they are for sale! Price $150 USD
 Recommend MicroView programmer for $20 more
 Developer and User Support Forum:
http://www.jammingsignal.com (click FORUMS)