kodak80 blog

[kodak80]

RJ12 connectors arrived and so have tested 5V and GND were showing on the right locations on the adapter. Looks like TX and RX are wired correctly as well.

CKBD adapter with my Mega ST is now tested and USB devices work. Dell Keyboard and Microsoft Basic mouse both work fine.

Eiffel Mega ST Adapter 001.jpg (234.3 KiB) Viewed 1589 times

Eiffel Mega ST Adapter 002.JPG (229.96 KiB) Viewed 1589 times

[kodak80]

Moving on from my initial CKBD adapter for my Mega ST which is effectively an Eiffel adapter without the PIC chip. It was time to integrate the new CH559 chip onto the PCB.

Eiffel recreated 2025 v1.1a_2025-11-01-top.png (382.16 KiB) Viewed 1159 times

Apart from getting the TX and RX connected the wrong way round, it works.

All ports tested and working. Ended up with wireless keyboard and mouse connected to the USB ports on my Mega ST.

[agranlund]

All ports tested and working. Ended up with wireless keyboard and mouse connected to the USB ports on my Mega ST.

Awesome!

[atari030]

That's pretty neat. Nice one.

[kodak80]

I think I now have my Mega ST CKBD adapter where I want it.

USB wireless keyboard
USB wireless mouse
UniJoysticle2 Bluetooth joystick with my Xbox controller connected

Totally wireless connectivity - no wires getting in the way.

Here is the final adapter

Eiffel CKBD 2025 v2.1 built.jpg (262 KiB) Viewed 957 times

[tOriman]

Excellent Job!

tOri

[kodak80]

I have been looking for a better interface for using a Gotek drive in my Atari computers where the Gotek sits at the side and OLED and buttons are hard to access.

I recently found this project which has an Amiga focus but also is agnostic in terms of providing an interface to using a Gotek drive.

https://github.com/mesarim/Gotek-Touchscreen-interface

I have purchased one of these units which just needed flashing with the firmware to get going.

Sca93479b097f4c66b02ae7a2b9c172a8a.jpg (137.6 KiB) Viewed 29 times

https://www.aliexpress.com/item/1005007566332450.html

You simply load up the SD card with your disk image files and it plugs into the Gotek USB port. I have tested with a number of .ST floppy disk images and it works well.

I have contact them and they are working to get HFE Atari ST disk images working which I will be testing.

EDIT: Here is an overview from Retronaut:

[kodak80]

https://github.com/mesarim/Gotek-Touchscreen-interface

GTi firmware .38 has been released and HFE file support has greatly improved. I have been loading and testing various Atari ST Games in HFE format and testing so far is looking good.