![Focus FK-2001 (Asian 102 layout)](/_astro/fk-0.Ck6dvum9_Z16dMeF.webp)
I found a Focus FK-2001 terminal keyboard in the garage. My dad first used it in the 90’s when he started programming. It’s honestly still pretty nice for being in storage for 10+ years.
Initially, to connect the 5 pin DIN cable to my modern computer, I used a 5 pin DIN to PS/2 adapter and a PS/2 to USB adapter.
the chain of adapters
![The Chain of Adapters](/_astro/fk-5.D7Z2OroM_Z1mjq4F.webp)
First things first, I took it apart and cleaned it throughly. I dusted out the innards with an air duster and wiped down all the keycaps.
out of the case
![Out of the Case](/_astro/fk-1.DHD5DZna_2qsbDP.webp)
keycaps off
![Keycaps Off](/_astro/fk-2.C3fdSCCj_Z24CxdD.webp)
I found that some of the keys (space and left ctrl) seemed to be double pressing. I desoldered and swapped the troublesome switches with working switches.
alps keycaps
![Alps Keycaps](/_astro/fk-3.gwh5eE6x_Z1kLusU.webp)
alps switches
![Alps style switches](/_astro/fk-4.Cym2UJ3V_Z2b0oSC.webp)
I really like the beige retro color of tech from this time period. The switches are Alps SKCM whites or a clone, I’m not entirely sure.
Since the adapter chain is bit unsightly, I decided to use a Pro-Micro to adapt the keyboard to use USB.
The pins of the original cable connector are labelled C, D, G, and V for clock, data, ground, and voltage respectivley.
C, D, G, V labels on the pcb
![C, D, G, V labels on the pcb](/_astro/fk-6.DXuGRIX1_Z25SgJc.webp)
I connected these pins to the Pro-Micro’s PD0, PD1, RAW, and GND, then I flashed the Pro-Micro with Hasu’s terminal keyboard converter.
the setup
![The Setup](/_astro/fk-7.DTususq0_CHG03.webp)
Luckily, there was a hole in the back of the case that was just big enough for a USB mini port so I didn’t have to do any drilling.
pro-micro in place
![Pro-Micro in Place](/_astro/fk-8.DRU_Ocfs_Z1Ey1O1.webp)
usb mini-b port
![USB Mini-B Port](/_astro/fk-9.vNphtR6m_Z1oieur.webp)
I didn’t have heat shrink at the time so I hotglued the wires for insulation and stability (don’t worry, I soldered them first).
I also used a stack of cardboard and electrical tape to support the Pro-Micro in the case. Not the prettiest solution, but no one’s going to see it inside the case.
restored FK-2001
![Restored FK-2001](/_astro/fk-10.DUylKfNY_Z2jjPWG.webp)