Author Topic: [TMK] FC660C Alt Controller (Read 80646 times)

hasu · « **on:** Fri, 24 March 2017, 02:20:13 »

TMK Alt Controller for FC660C
Premade controlller is Still available here (2023-02-18)

https://geekhack.org/index.php?topic=90317.0

Goal
To get programmability by replacing controller of Leopold FC660C with my own version.

How to open case
You have to void warranty from manufacturer to do this mod, of course.

More

Step 1: Void your warranty with getting rid of sticker and unscrew.

Step 2: Crack it open using tool like phone openner with care.

Step3: Done!

Analysis
Reverse engineering work on the keyboard had happened by some people in this thread for these few years.
https://geekhack.org/index.php?topic=54222.0

More

Pics of FC660C: https://imgur.com/a/UTR8Z
FCC docs: https://fccid.io/RPKFC

Controller board

Dimensions: 98.3mm x 35.0mm
Schematic: https://fccid.io/pdf.php?id=1888185

* CPU: Fujitsu/Cypress F2MC-16LX MB90F337 - http://www.huazhoucn.com/propic/ds90335-ds07-13735-2e.pdf
* 20-contacts connector: Hirose DF14A-20P-1.25H - http://www.mouser.com/ds/2/185/DF14_catalog-939195.pdf
* 10-contacts connector: JST SM10B-SRSS-TB - http://www.jst-mfg.com/product/pdf/eng/eSH.pdf

Switch board

Schematic: https://fccid.io/pdf.php?id=1888185
* 20-contacts connector: Hirose DF14A-20P-1.25H - http://www.mouser.com/ds/2/185/DF14_catalog-939195.pdf
* LV07A - http://www.ti.com/lit/ds/symlink/sn74lv07a.pdf
* LV138A - http://www.ti.com/lit/ds/symlink/sn74lvc138a.pdf
* LV4051A - http://www.ti.com/lit/ds/symlink/sn74lv4051a.pdf
* AD5258: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf

Connector Pinouts

Quote

|Switch |Controller | | board | board |Description |Schematic |--------|-----------|--------------------------------------|----------- | 1 |20 | FG |FG | 2 |19 | GND |GND | 3 |18 | GND |GND | 4 |17 | 3.3V |V33 | 5 |16 | 5V |Vcc | 6 |15 |*Z6-TP1684-4-HYS(o) |FBSTB | 7 |14 |*Z6-TP1684-2-KEY(i) |OUT | 8 |13 |*Z2-AD5258-5-SCL(I2C) |SCL | 9 |12 |*Z2-AD5258-4-SDA(I2C) |SDA |10 |11 |*Z4-LV4051A-6-~EN(Col 0-7) |INH_1 |11 |10 |*Z5-LV4051A-6-~EN(Col 8-F) |INH_2 |12 | 9 |+Z7-LV07A-5 (LV4051A-9-C) |SEL_C |13 | 8 |+Z7-LV07A-1 (LV4051A-10-B) |SEL_B |14 | 7 |+Z7-LV07A-3 (LV4051A-11-A) |SEL_A |15 | 6 |+Z3-LVC138A-3-C |COL4 |16 | 5 |+Z3-LVC138A-2-B |COL3 |17 | 4 |+Z3-LVC138A-1-A |COL2 |18 | 3 |+Z3-LVC138A-4-~G2A Z6-TP1684-5-~EN |COL1 |19 | 2 |+Z7-LV07A-11-~InsertLED |LED1 |20 | 1 |+Z7-LV07A-13-~CapsLED |LED2 ``` * 5V intferface + 3.3V interface ```

Digipot
You can communicate with AD5258 via I2C through 8 and 9 pins, though this is not needed for normal use of the keyboard.
You can tune actuation point by changing resistance of the digipot. But this may be in danger of making your keyboard unusable accidentally, firmware won't offer this feature at this point.

You can see test codes here, this works well for me somehow but try at your own risk.
https://github.com/tmk/tmk_keyboard/blob/fc660c_i2c/keyboard/fc660c/unimap_i2c.c

Fork fc660c_i2c branch and run 'make -f Makefile.i2c' in fc660c directory to build firmware.

// !!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!
// Writing improper value to EEPROM may mess your keyboard and
// it will require some hassles to recover it.
//
// CHECK DATASHEETS SCHEMATICS AND CODES BEFORE TRYING.
// !!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!

3.3V powered chips
LV07A(Z1, Z7) and LVC138A(Z3) work with 3.3V Vcc and receive 3.3V level inputs originally. But in fact they can work only with 5V supply by connecting 5V with 4pin instead of 3.3V.
I beleive giving 5V power with the chips doesn't harm those chips physically because it is within "Absolute Maximum Ratings". Moreover, 5V Vcc on LV07A meets "Recommended Operating Conditions" completely and nothing wrong there. But note that 5V powered LVC138A is out of its "Recommended Operating Conditions" and it may affect reliability of operation slightly.

On the other hand, inputs of both chips are 5V tolerant, it is completely safe to interface using 5V I/O microcontroller even when the chips are powered with 3.3V. You don't have to use 3.3V I/O.

You can choose whether you use 3.3V voltage regulator or not depending your preference or precaution.

How to scan switches
This code emulates what original controller does on scanning.
https://github.com/tmk/tmk_keyboard/blob/472a60c40d32469197c168b8ec488e85c6efaa4f/keyboard/fc660c/fc660c.c#L66-L124

More

Logic analyzer pics of matrix scan
From these waveforms You will get idea about how to scan switches on the keyboard.

Close up:

Overall:

Switch matrix

Quote

| |0 |1 |2 |3 |4 |5 |6 |7 |8 |9 |A |B |C |D |E |F | |----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----| | 0|Q |W |E |Tab |R |U |T |Y |O |P |[ |I |] | |\ |Del | | 1|1 |2 |3 |Esc |4 |7 |5 |6 |9 |0 |- |8 |= | |BSpc|Ins | | 2| |LWin|LAlt|LCtl| | | |Spc |RAlt| |RCtl| |Fn |Down|Left|Rght| | 3| |Z |X |LSft|C |N |V |B |, |. |/ |M |RSft|Up | | | | 4|A |S |D |Caps|F |J |G |H |L |; |' |K | | |Entr| | | 5| | | | | | | | | | | | | | | | | | 6| | | | | | | | | | | | | | | | | | 7| | | | | | | | | | | | | | | | |

Row5-7 have no key, you can omit scaning on those lines. Topre original controller scans those rows for some reason.

Row designation
LV138A(Z3) selects a row line and gives strobe by enabling with ~G2A(18).

Quote

|Row |A/17|B/16|C/15| |----|----|----|----| |0 |0 |0 |0 | |1 |1 |0 |0 | |2 |0 |1 |0 | |3 |1 |1 |0 | |4 |0 |0 |1 | |5 |1 |0 |1 | |6 |0 |1 |1 | |7 |1 |1 |1 |

Column designation
LV4051A(Z4, Z5) select one of 16 column lines to sense capacitance of switches.

Quote

|Col |A/14|B/13|C/12|Z4-EN/10|Z5-EN/11| |----|----|----|----|--------|--------| |0 |0 |0 |0 |0 |1 | |1 |1 |0 |0 |0 |1 | |2 |0 |1 |0 |0 |1 | |3 |1 |1 |0 |0 |1 | |4 |0 |0 |1 |0 |1 | |5 |1 |0 |1 |0 |1 | |6 |0 |1 |1 |0 |1 | |7 |1 |1 |1 |0 |1 | |8 |0 |0 |0 |1 |0 | |9 |1 |0 |0 |1 |0 | |A |0 |1 |0 |1 |0 | |B |1 |1 |0 |1 |0 | |C |0 |0 |1 |1 |0 | |D |1 |0 |1 |1 |0 | |E |0 |1 |1 |1 |0 | |F |1 |1 |1 |1 |0 |

Make Alt controller
Now that you can get all of information to make your own controller for FC660C from here and there, post in this thread to share your findings and ideas.

Harness
To get connected to switch board you will need cable with Hirose DF14 series connector.

More

I made harness like this for prototyping on bread board but it was tedious and diffifult to crimp its contacts with wires.

Instead, I could use original cables with DF14 receptacle and solder wires on there, it would be far easier.

Or you can find cable on ebay. Search with "DF14 20P".

Connection
Basically you need just 15 5V I/O pins from your favorite microcontroller to connect them with DF14 connector. Easy.

More

I used very plain dev board with ATMega32U4 for bread board protyping. And this is photo and example of pin configuration for the microcontroller.

Prototype on bread board in action.

Quote

|Switch | | | board |Description |ATmega32u4 |--------|------------------------------------------|----------- | 1 | FG |GND | 2 | GND |GND | 3 | GND |GND | 4 | 3.3V |3.3V/5V | 5 | 5V |5V | 6 |*Z6-TP1684-4-HYS(o) |PC7 | 7 |*Z6-TP1684-2-KEY(i) |PC6 | 8 |*Z2-AD5258-5-SCL(I2C) |PD0(TWI) | 9 |*Z2-AD5258-4-SDA(I2C) |PD1(TWI) |10 |*Z4-LV4051A-6-~EN(Col 0-7) |PB4 |11 |*Z5-LV4051A-6-~EN(Col 8-F) |PB3 |12 |+Z7-LV07A-5 (LV4051A-9-C) |PB2 |13 |+Z7-LV07A-1 (LV4051A-10-B) |PB1 |14 |+Z7-LV07A-3 (LV4051A-11-A) |PB0 |15 |+Z3-LVC138A-3-C |PD6 |16 |+Z3-LVC138A-2-B |PD5 |17 |+Z3-LVC138A-1-A |PD4 |18 |+Z3-LVC138A-4-~G2A Z6-TP1684-5-~EN |PD7 |19 |+Z7-LV07A-11-~InsertLED |PB5 |20 |+Z7-LV07A-13-~CapsLED |PB6

This is circuit schematic of TMK Alt controller, for reference.

fc660c_controller.pdf (40.38 kB - downloaded 761 times.)

Firmware
TMK firmware supports FC660C Alt controller of ATMega32U4 now.

https://github.com/tmk/tmk_keyboard/tree/master/keyboard/fc660c

TMK Keymap Editor is available

Plain keymap:
http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?fc660c

Emulation keymap: This emulates FC660C stock behaviour on Esc/~`, Fn+Esc and Fn+q.
http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?fc660c_emu

How to control LEDs
You can't change LED behaviour with Keymap Editor.

In 'Plain' keymap firmware Capslock LED indicates its key status and Insert one is not controlled at all.
In 'Emulation' keymap firmware Capslock LED indicates its key status and Insert one is lit when Layer1 is enabled.

Capslock and Insert LED are connected to PB6 and PB5 respectively. You can control them as you want by writing small code. Refer to these files.
https://github.com/tmk/tmk_keyboard/blob/f8276ddb57c8b13931c3889a0b50711ea20c5d3d/keyboard/fc660c/unimap_emu.c#L57-L65
https://github.com/tmk/tmk_keyboard/blob/4befc879f68bf09421071f81138cd3665e625f28/keyboard/fc660c/fc660c.c#L129-L136

Note
- Actuation point adjustment See this post. https://geekhack.org/index.php?topic=88439.msg2403275#msg2403275

hking0036 · « **Reply #1 on:** Fri, 24 March 2017, 18:26:58 »

Cool stuff. Looking forward to more info as it comes.

nsmechkb · « **Reply #2 on:** Fri, 24 March 2017, 20:22:57 »

Amazing!

Lack of controller and aesthetics are the two main arguments against 660C vs HHKB imo. Can't really help the layout--they chose it, and it's functional. But you're solving the controller issue for us! Thank you!

testplsignore · « **Reply #3 on:** Sat, 25 March 2017, 11:19:38 »

Been following this from the start, awesome work hasu!

Count me in for one of the first ones that you sell, would love to see a bluetooth version w/ a built in switcher

hasu · « **Reply #4 on:** Sat, 25 March 2017, 19:47:15 »

Finished updating in first post and all infos needed for this mod should be there. :phew:

Quote from: testplsignore on Sat, 25 March 2017, 11:19:38

Been following this from the start, awesome work hasu!

Count me in for one of the first ones that you sell, would love to see a bluetooth version w/ a built in switcher

I'm working on TMK USB Alt Controller for FC660C now. I'll post here for its update.

Bluetooth version may come months later but I'm not sure.

Korseir · « **Reply #5 on:** Sat, 25 March 2017, 21:11:17 »

Awww yiiiiis

testplsignore · « **Reply #6 on:** Sun, 26 March 2017, 02:59:49 »

Count me in for USB (and later) BT!

A few people I've heard have had issues with the stock female mini USB coming off their stock board, will your controller use a more secure version of the connector?

JMD · « **Reply #7 on:** Sun, 26 March 2017, 03:11:38 »

Hi Hasu,

I have purchased a like new in box, fc980c.

The other day, plugging in the keyboard completely died and is unresponsive. No damages anywhere to be seen, just randomly quit working.

I am wondering if my controller for it failed. Do you know if this controller would work on my 980c?

Rykno · « **Reply #8 on:** Sun, 26 March 2017, 03:15:40 »

Would this work for FC660m?

cutterline · « **Reply #9 on:** Mon, 27 March 2017, 08:17:46 »

Quote from: Rykno on Sun, 26 March 2017, 03:15:40

Would this work for FC660m?

No, C is a different beast.

Quote from: JMD on Sun, 26 March 2017, 03:11:38

Hi Hasu,

I have purchased a like new in box, fc980c.

The other day, plugging in the keyboard completely died and is unresponsive. No damages anywhere to be seen, just randomly quit working.

I am wondering if my controller for it failed. Do you know if this controller would work on my 980c?

No and why don't you go RMA that?

ramnes · « **Reply #10 on:** Mon, 27 March 2017, 08:42:51 »

Looking forward for the PCB GB. Thanks Hasu for all your work, that's incredible.

Glissant · « **Reply #11 on:** Mon, 27 March 2017, 14:15:04 »

Definitely super interested in a kit or pre-built!

hasu · « **Reply #12 on:** Mon, 27 March 2017, 18:05:44 »

Quote from: JMD on Sun, 26 March 2017, 03:11:38

Hi Hasu,

I have purchased a like new in box, fc980c.

The other day, plugging in the keyboard completely died and is unresponsive. No damages anywhere to be seen, just randomly quit working.

I am wondering if my controller for it failed. Do you know if this controller would work on my 980c?

This controller doesn't work with FC980C.
It doesn't fit physically at least. FC980C has different controller but seems to be very similar to FC660C. I think you can use many of information and design in this thread to make repacement controller for FC980C.

This is pic of FC980C controller.

Thanks for the photo, testplsignore. https://geekhack.org/index.php?topic=54222.msg2384740#msg2384740

hasu · « **Reply #13 on:** Mon, 27 March 2017, 18:12:43 »

Quote from: Rykno on Sun, 26 March 2017, 03:15:40

Would this work for FC660m?

No. It is probably completely different.

hasu · « **Reply #14 on:** Mon, 27 March 2017, 18:44:18 »

Quote from: testplsignore on Sun, 26 March 2017, 02:59:49

Count me in for USB (and later) BT!

A few people I've heard have had issues with the stock female mini USB coming off their stock board, will your controller use a more secure version of the connector?

I'll use trusty Hirose USB mini receptacle, specifically UX60SC-MB-5S8 which is used on current version of Topre original controller(marked ZJ0121 on its PCB).
Its shell has through hole feet which people generally prefer to SMT. I also use this on my Alt controller for HHKB and no problem have been reported from users so far.
http://www.mouser.com/ds/2/185/UX_catalog-939708.pdf

From FCC documents initial versions of FC660C seems to use UX60SC-MB-5ST which has SMT feet not through hole. I speculate this cause the issues but not sure.
Not that SMT is problem it may be difficult to get good bond strength in comparison with TH. They will need exactly controlled soldering process and good quality PCB.

Latin00032 · « **Reply #15 on:** Mon, 27 March 2017, 18:57:47 »

Sign me up for this!
Need a new controller.

robotmaxtron · « **Reply #16 on:** Wed, 29 March 2017, 21:31:06 »

this is great Hasu, I can't wait to pick one up.

_rubik · « **Reply #17 on:** Mon, 03 April 2017, 12:27:00 »

This almost makes me regret buying my clueboard... I can't wait for updates on this project.

hasu · « **Reply #18 on:** Wed, 05 April 2017, 00:13:11 »

I got first revision of PCB the other day and have tested it for these two or three days. I have no big problem on it and am typing on it.

First PCB
In the revision screw holes and USB connector is a bit off but no problem in use and it will align completely by filing the hole a little. No electrical issue is found.

USB connector(a bit off)

PCB.

Button on bottom.

Keymap Editor
And added oline keymap editor for FC660C controller. Default keymap is a bit complex to emulate original behaviour like Shift+Esc=~ and Fn+Q.
http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?fc660c

BAS1C · « **Reply #19 on:** Wed, 05 April 2017, 00:14:45 »

Quote from: hasu on Wed, 05 April 2017, 00:13:11

I got first revision of PCB the other day and have tested it for these two or three days. I have no big problem on it and am typing on it.

First PCB
In the revision screw holes and USB connector is a bit off but no problem in use and it will align completely by filing the hole a little. No electrical issue is found.

USB connector(a bit off)
Show Image

PCB.
Show Image

Button on bottom.
Show Image

Keymap Editor
And added oline keymap editor for FC660C controller. Default keymap is a bit complex to emulate original behaviour like Shift+Esc=~ and Fn+Q.
http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?fc660c
Show Image

Awesome news, it looks great! What is the ETA on finalized PCBs for purchase?

robotmaxtron · « **Reply #20 on:** Wed, 05 April 2017, 00:38:18 »

Excellent work Hasu, really looking forward to an eventual larger run of the pcbs.

stoic-lemon · « **Reply #21 on:** Wed, 05 April 2017, 00:49:27 »

I made a wish a few days ago that this would happen. Now i can finally buy one these keyboards. Thanks Hasu.

suparnemo · « **Reply #22 on:** Wed, 05 April 2017, 15:01:18 »

Hi Hasu,

For Shift + Esc = ~

Can't you do on layer 2 code edit for esc key:
Action_mods_key Rshift Grave?

commandlinedesign · « **Reply #23 on:** Wed, 05 April 2017, 17:09:52 »

Hail Hasu!

This is incredible. I don't even own an fc660c, but I might get one now.

lolbitter · « **Reply #24 on:** Wed, 05 April 2017, 19:25:30 »

Holy crap so cool. Great job hasu! Looking forward to trying it whenever it's available.

hasu · « **Reply #25 on:** Wed, 05 April 2017, 19:27:47 »

Quote from: suparnemo on Wed, 05 April 2017, 15:01:18

Hi Hasu,

For Shift + Esc = ~

Can't you do on layer 2 code edit for esc key:
Action_mods_key Rshift Grave?

How do you change to layer 2 then?

I think ACTION_LAYER_MODS(2, SHIFT) on layer 0 is required to emulate Shift+Esc behaviour.

TJ446 · « **Reply #26 on:** Wed, 05 April 2017, 19:46:03 »

Hi Hasu. Thanks for all of your awesome work. If you do sell a finalized controller, I'd be interested in buying 2...

hasu · « **Reply #27 on:** Wed, 05 April 2017, 19:52:40 »

Quote from: BAS1C on Wed, 05 April 2017, 00:14:45

Awesome news, it looks great! What is the ETA on finalized PCBs for purchase?

GB thread will open soon.
It closes at end of April and shipping starts at mid of May in current schedule.

I'll be able to do a few more iteration of pcb designs before closing GB.

Jumie · « **Reply #28 on:** Wed, 05 April 2017, 20:08:37 »

How much will it cost? Count me in..

hasu · « **Reply #29 on:** Wed, 05 April 2017, 20:51:39 »

Quote from: Jumie on Wed, 05 April 2017, 20:08:37

How much will it cost? Count me in..

40USD shipped. GB thread was just approved. Please post any question and suggestion regarding GB in the thread.

https://geekhack.org/index.php?topic=88720.0

mszy52 · « **Reply #30 on:** Wed, 05 April 2017, 21:12:19 »

Congrats on finally getting the controller to the public! Is there any estimation now of when the bluetooth controller will be finished?

hiram · « **Reply #31 on:** Wed, 05 April 2017, 23:54:46 »

Will there be a way to control the led under the Insert key?

hasu · « **Reply #32 on:** Thu, 06 April 2017, 03:59:56 »

Quote from: hiram on Wed, 05 April 2017, 23:54:46

Will there be a way to control the led under the Insert key?

Yes, you can control the LED by writing small code.

In current firmware the Insert LED is lit when layer 1 is activated to emulate Fn+Q behaviour.
https://github.com/tmk/tmk_keyboard/blob/master/keyboard/fc660c/unimap.c#L57-L65

hasu · « **Reply #33 on:** Thu, 06 April 2017, 06:51:15 »

Quote from: mszy52 on Wed, 05 April 2017, 21:12:19

Congrats on finally getting the controller to the public! Is there any estimation now of when the bluetooth controller will be finished?

I have no clear plan on Bluetooth controller, I'm not working on it currently at least.

I found some dificulties on Bluetooth controller. One of them is that FC660C controller PCB is much smaller than HHKB and this requires new design and components. It will take longer than what I expected and I'm not sure when I can have enough time to do so.

thelaughingman · « **Reply #34 on:** Tue, 11 April 2017, 21:05:31 »

Quote from: hasu on Thu, 06 April 2017, 06:51:15

Quote from: mszy52 on Wed, 05 April 2017, 21:12:19
Congrats on finally getting the controller to the public! Is there any estimation now of when the bluetooth controller will be finished?

I have no clear plan on Bluetooth controller, I'm not working on it currently at least.

I found some dificulties on Bluetooth controller. One of them is that FC660C controller PCB is much smaller than HHKB and this requires new design and components. It will take longer than what I expected and I'm not sure when I can have enough time to do so.

waiting is the name of the game

testplsignore · « **Reply #35 on:** Wed, 12 April 2017, 09:16:19 »

I've got a USB one ordered, but would definitely jump on a BT one at a later date

robotmaxtron · « **Reply #36 on:** Thu, 13 April 2017, 15:35:05 »

I thought I read somewhere Hasu where you said it might be possible to change the actuation point of the switches. Is that something that's still being investigated? That would be an insanely cool feature if it's possible.

hasu · « **Reply #37 on:** Fri, 14 April 2017, 20:42:58 »

Quote from: robotmaxtron on Thu, 13 April 2017, 15:35:05

I thought I read somewhere Hasu where you said it might be possible to change the actuation point of the switches. Is that something that's still being investigated? That would be an insanely cool feature if it's possible.

You can see test codes here, this works well for me somehow but try at your own risk.
https://github.com/tmk/tmk_keyboard/blob/fc660c_i2c/keyboard/fc660c/unimap_i2c.c

Fork fc660c_i2c branch and run 'make -f Makefile.i2c' in fc660c directory to build firmware.

// !!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!
// Writing improper value to EEPROM may mess your keyboard and
// it will require some hassles to recover it.
//
// CHECK DATASHEETS SCHEMATICS AND CODES BEFORE TRYING.
// !!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!

EDIT:
I don't still feel calm offering this function to users and default firmware won't support this for a while at least.

_rubik · « **Reply #38 on:** Thu, 20 April 2017, 00:18:37 »

I'm wondering how much work would need to be done to get this working on other Leopolds. Like the 980c for example. Maybe only Hasu can answer this question, but is this controller hardware or software specific?

hasu · « **Reply #39 on:** Thu, 20 April 2017, 14:15:56 »

i don't have the keyboard and cant find enough pics of internals. it is difficult to say about 980c without closer inspection. I guess it is very similar, not so much hassle is required.

stoic-lemon · « **Reply #40 on:** Thu, 20 April 2017, 22:20:44 »

I got my controller early this week, and the keyboard yesterday. Installation went smoothly and I'm typing on the board now. Thanks Hasu!

testplsignore · « **Reply #41 on:** Fri, 21 April 2017, 07:03:55 »

Hasu, I'll be opening my FC980C later this week to convert it to MX, let me know if you'd like any specific internal views!

_rubik · « **Reply #42 on:** Fri, 21 April 2017, 18:08:59 »

Quote from: hasu on Thu, 20 April 2017, 14:15:56

i don't have the keyboard and cant find enough pics of internals. it is difficult to say about 980c without closer inspection. I guess it is very similar, not so much hassle is required.

Quote from: testplsignore on Fri, 21 April 2017, 07:03:55

Hasu, I'll be opening my FC980C later this week to convert it to MX, let me know if you'd like any specific internal views!

I would really like to look into this. At this point in my keeb career, programmability is absolutely required. If you think it's possible, I may end up splurging.

hasu · « **Reply #43 on:** Fri, 21 April 2017, 19:41:18 »

Quote from: testplsignore on Fri, 21 April 2017, 07:03:55

Hasu, I'll be opening my FC980C later this week to convert it to MX, let me know if you'd like any specific internal views!

I'd like to see both sides of pcbs. Thanks.

stoic-lemon · « **Reply #44 on:** Sat, 22 April 2017, 09:34:00 »

If it looks like it would be possible, I would be willing to lend you a board to take a look at. I'll need to buy one first though, but I love that layout.

hasu · « **Reply #45 on:** Sat, 22 April 2017, 23:48:15 »

Thanks. But I don't want to break virginity of your board with repeated tweaks and tinkering

They recently just started selling FC980C in Japan, it is not bad in terms of availability now, apart from its price.

Bucake · « **Reply #46 on:** Sun, 23 April 2017, 18:42:24 »

damn, now i have a reason..

stoic-lemon · « **Reply #47 on:** Mon, 24 April 2017, 22:45:12 »

Quote from: hasu on Sat, 22 April 2017, 23:48:15

Thanks. But I don't want to break virginity of your board with repeated tweaks and tinkering

They recently just started selling FC980C in Japan, it is not bad in terms of availability now, apart from its price.

Yes, if you see them on sale for less than ~￥29,000, please let me know

switchnollie · « **Reply #48 on:** Fri, 28 April 2017, 22:08:21 »

Think it's finally time to get a 660C

Been holding off due to the lack of programmability.

Karpy · « **Reply #49 on:** Sat, 03 June 2017, 01:00:39 »

Would anyone car to share their hex file with me? I'm sure there is some good programmabilityto be done, but so far only made minor ones.


Realforce 10AE 45g Type-S & 55g		HHKB BT & Type-S		Realforce RGB Hype-S		FC980C		FC660C		Filco BT TKL


Realforce 10AE 45g Type-S & 55g		HHKB BT & Type-S		Realforce RGB Hype-S		FC980C		FC660C		Filco BT TKL


Realforce 10AE 45g Type-S & 55g		HHKB BT & Type-S		Realforce RGB Hype-S		FC980C		FC660C		Filco BT TKL


Realforce 10AE 45g Type-S & 55g		HHKB BT & Type-S		Realforce RGB Hype-S		FC980C		FC660C		Filco BT TKL

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Author Topic: [TMK] FC660C Alt Controller (Read 80646 times)