FujiNet 1.5

USD $58.00USD $75.00

#FujiNet, Version 1.5, is a network adapter that attaches to the SIO (Peripheral) port of an Atari 8-bit computer system to a WiFi network; however, it has become an all-encompassing SIO peripheral emulator. An optional 16GB MicroSD card is available. High-Speed SIO support!

SKU: FN105 Category:


#FujiNet is a network adapter that attaches to the SIO (Peripheral) port of an Atari 8-bit computer system to a WiFi network; however, it has become an all-encompassing SIO peripheral emulator. The current hardware is a design based on the ESP32-WROVER module and contains a custom 3D printed SIO Plug and Receptacle, allowing users to attach real SIO devices simultaneously with #FujiNet.

Changes for version 1.5

  • Everything that 1.3 had but it works!
  • Better support with other SIO devices.

Changes for version 1.3

All the same great functionality as version 1.0 plus these key changes:

  • Now works with the 1088XEL/XLD!
  • Works correctly with other high-speed devices on the SIO bus.
  • Works correctly with the SIO2PC interface, especially the one in the 1088XEL.
  • SIO lines connected to ESP32 through two 74LS07
  • P & N Channel transistors turn off 74LS07 when FujiNet is turned off separating the ESP32 from the Atari
  • Switch to QFN 24 CP20102 USB to UART Bridge
  • Hard reset button moved to SMD Snap Dome (optional)
  • Safe Reset button (handled in firmware) replaces Hard Reset button
  • New Power switch & 3D printed slide cover
  • Remove always on solder jumper
  • Add pull-down for MOTOR for Cassette emulation
  • JTAG port removed. Signals available as test points


The #FujiNet device provides the following services:

Device Description Notes
C: (Cassette Drive) Loads CAS images. Under Development
D: (Disk Drive) Load floppy disk images from onboard MicroSD or networked TNFS server. Supports ATR, ATX, and XEX formats. Currently Working
R: (Modem) 850 Modem emulation, supports Type 1 Poll to load handler. Works with existing communications programs such as Ice-T, BobTerm, AMODEM, PLATOTERM, and BBS servers. Currently Working
P: (Printer) Printer output saved to PDF files downloadable from the device. Available Printers: 820, 822, 825, 1020, 1025, 1027, 1029, Espon 80, Okimate 10, HTML for copy/paste, GRANTIC Screen Printer. Example 822 Printouts (PDF): Text & Graphics. Currently Working
N: (Network) NEW networking device. #FujiNet configuration commands in place and working (WiFi, mounting, etc). TCP/UDP working. Handler in progress.
Other SIO2BT Bluetooth Connection. Apetime Real Time Clock (NTP). SAM Text To Speech as a printer, voice output from #FujiNet to Atari (Video with explanationWAV File & SAM short video). MIDIMaze network gaming in progress (Video) In Progress.
Source: https://fujinet.online/


There is no official documentation for the FujiNet, however, there are some fantastic resources available online.

These resources are invaluable for getting the most out of your FujiNet. There are also many videos on YouTube about FujiNet. The FujiNet is still in active development and the software changes frequently so it is a good idea to keep an eye on the Wiki and the main GitHub of the project for the latest updates and information.

Firmware The device will ship with the latest release of the firmware, however, the firmware is being updated continually by the #FujiNet team, and they have provided a simple to use tool to update the #FujiNet firmware any time. Firmware for FujiNet can be flashed using the easy cross-platform flash program. Download the program for your operating system below: FujiNet-Flasher Windows x86 FujiNet-Flasher Windows x64 FujiNet-Flasher MacOS Catalina 10.15 FujiNet-Flasher Linux x64 You may also need to install the CP210x USB to UART driver which is available from https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers Connect the #FujiNet to your computer with a MicroUSB cable. Run the flash program with elevated privileges (as administrator or root user) so that it may access the serial port. Select the correct serial port for your FujiNet then click the Flash ESP button. The latest firmware is automatically downloaded directly from the FujiNet.online web server and installed on the #FujiNet device. The log window will display the flashing progress.

FujiNet Front View FujiNet Back View

Colors may vary slightly from images shown

Additional information

Weight 3 oz
Dimensions 3 × 2.5 × 2 in
Case Style

400/800, XE, XL, No Case


Yes, No


No, Yes


Natural, Orange


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