FC980C Alt controller
=====================
-2017/07/11
+2017/07/21
-This keyboard is very similar to FC660C hardware.
+This controler replaces original controller of Leopold FC980C and makes the keyboard programmable.
+
+Discuss this here: https://geekhack.org/index.php?topic=90681.0
+
+The keyboard is very similar electronically to its sibling model FC660C you can also refer this.
FC660C Alt Controller: https://geekhack.org/index.php?topic=88439.0
-Firmware
+Hardware
--------
-Just `make` to build firmware. And consult with wiki for further information.
+This project uses common and familiar ATmega32u4 but any microcontroller with 5V I/O will work.
-https://github.com/tmk/tmk_keyboard/wiki
+- Schematic of Alt controller: schematic.pdf
-Pinouts
--------
-ATMega32u4 pin configuration is temporary for test with FC660C Alt controller.
+Pin configuration
+-----------------
+Connector bridging between switch board and controller is Hirose DF14A-20P-1.25H.
|Switch |Controller |
| board | board |Description |Function |ATmega32u4
| 5 |16 | 5V |Vcc |5V
| 6 |15 |*Z6-TP1684-4-HYS(o) |KEY_HYS |PC7
| 7 |14 |*Z6-TP1684-2-KEY(i) |KEY_STATE |PC6
- | 8 |13 |*Z7-AD5258-5-SCL(I2C) |I2C_CCL |PD0(TWI)
+ | 8 |13 |*Z7-AD5258-5-SCL(I2C) |I2C_SCL |PD0(TWI)
| 9 |12 |*Z7-AD5258-4-SDA(I2C) |I2C_SDA |PD1(TWI)
- |10 |11 |*Z5/4-LV4051A-6-~EN(Lo:Z5 Hi:Z4) |COL_bit3 |PB4 PB3
- |11 |10 |+Z3-LV07A-5 (LV4051A-9-C) |COL_bit2 |PB3 PB2
- |12 | 9 |+Z3-LV07A-1 (LV4051A-10-B) |COL_bit1 |PB2 PB1
- |13 | 8 |+Z3-LV07A-3 (LV4051A-11-A) |COL_bit0 |PB1 PB0
- |14 | 7 |+Z1-LVC138A-3-C |ROW_bit2 |PB0 PD6
- |15 | 6 |+Z1-LVC138A-2-B |ROW_bit1 |PD6 PD5
- |16 | 5 |+Z1-LVC138A-1-A |ROW_bit0 |PD5 PD4
- |17 | 4 |+Z1-LVC138A-4-~G2A Z6-TP1684-5-~EN |KEY_ENABLE |PD4 PD7
- |18 | 3 |+Q4-MOSFET-G-NumLock_LED(Hi:On) |LED_NUML |PD7 PB4
- |19 | 2 |+Q3-MOSFET-G-CapsLock_LED(Hi:On) |LED_CAPS |PB5
- |20 | 1 |+Q2-MOSFET-G-ScrollLock_LED(Hi:On) |LED_SCRL |PB6
+ |10 |11 |*Z5/4-LV4051A-6-~EN(Lo:Z5 Hi:Z4) |COL_bit3 |PB3
+ |11 |10 |+Z3-LV07A-5 (LV4051A-9-C) |COL_bit2 |PB2
+ |12 | 9 |+Z3-LV07A-1 (LV4051A-10-B) |COL_bit1 |PB1
+ |13 | 8 |+Z3-LV07A-3 (LV4051A-11-A) |COL_bit0 |PB0
+ |14 | 7 |+Z1-LVC138A-3-C |ROW_bit2 |PD6
+ |15 | 6 |+Z1-LVC138A-2-B |ROW_bit1 |PD5
+ |16 | 5 |+Z1-LVC138A-1-A |ROW_bit0 |PD4
+ |17 | 4 |+Z1-LVC138A-4-~G2A Z6-TP1684-5-~EN |KEY_ENABLE |PD7
+ |18 | 3 |+Q4-NPN-B-NumLock_LED(Hi:On) |LED_NUML |PB4
+ |19 | 2 |+Q3-NPN-B-CapsLock_LED(Hi:On) |LED_CAPS |PB5
+ |20 | 1 |+Q2-NPN-B-ScrollLock_LED(Hi:On) |LED_SCRL |PB6
```
* 5V intferface
+ 3.3V interface
```
-- Connector on Switch board: https://i.imgur.com/Zi89xO5.jpg
-- Connector on Controller board: https://i.imgur.com/9SZUzYo.jpg
-
-Key Matrix
-----------
+Switch matrix
+-------------
| |0 |1 |2 |3 |4 |5 |6 |7 |8 |9 |A |B |C |D |E |F |
|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
| 0|Left|RCtl|RAlt| |Down|P. |Righ|P0 |X |LGui|` |V | |Esc |M |Spc |
- | 1|Fn |. | | |P1 |PEnt|P2 |P3 |Z |LAlt|RCtl|C |K | |N |B |
+ | 1|Fn |. | | |P1 |PEnt|P2 |P3 |Z |LAlt|LCtl|C |K | |N |B |
| 2|' |/ |, | |P4 |P+ |P5 |P6 |D |A |LSft|F |J |F1 |H |G |
| 3|RSft|; |L |] |Up | | | |S |Q |Caps|R |I |F3 |U |T |
| 4| | | | | | | | | | | | | | | | |
| 7|F11 |F10 |F9 |F12 |Del |PgDn|Ins |PgUp| | | | |F8 |F5 |F7 |F6 |
-Logic analyzer pics:
-- http://i.imgur.com/9XoNTev.png
-- https://i.imgur.com/5FCP1Ay.png
-
-This code emuluates what original cotnroller does for matrix scan.
-- https://github.com/tmk/tmk_keyboard/blob/master/keyboard/fc660c/fc660c.c
-
+Row designation
+---------------
+LV138A(Z1) selects one of 8 row lines and gives strobe by enabling with ~G2A(17).
-### Row designation
-LV138A(Z1) selects a row line and gives strobe by enabling with ~G2A(18).
-
- |Row |A/16|B/15|C/14|
+ |ROW |bit0|bit1|bit2|
|----|----|----|----|
|0 |0 |0 |0 |
|1 |1 |0 |0 |
|7 |1 |1 |1 |
-### Column designation
+Column designation
+------------------
LV4051A(Z4, Z5) select one of 16 column lines to sense capacitance of switches.
- |Col |A/13|B/12|C/11|Z4/5-EN/10|
- |----|----|----|----|----------|
- |0 |0 |0 |0 |0 |
- |1 |1 |0 |0 |0 |
- |2 |0 |1 |0 |0 |
- |3 |1 |1 |0 |0 |
- |4 |0 |0 |1 |0 |
- |5 |1 |0 |1 |0 |
- |6 |0 |1 |1 |0 |
- |7 |1 |1 |1 |0 |
- |8 |0 |0 |0 |1 |
- |9 |1 |0 |0 |1 |
- |A |0 |1 |0 |1 |
- |B |1 |1 |0 |1 |
- |C |0 |0 |1 |1 |
- |D |1 |0 |1 |1 |
- |E |0 |1 |1 |1 |
- |F |1 |1 |1 |1 |
+ |COL |bit0|bit1|bit2|bit3|
+ |----|----|----|----|----|
+ |0 |0 |0 |0 |0 |
+ |1 |1 |0 |0 |0 |
+ |2 |0 |1 |0 |0 |
+ |3 |1 |1 |0 |0 |
+ |4 |0 |0 |1 |0 |
+ |5 |1 |0 |1 |0 |
+ |6 |0 |1 |1 |0 |
+ |7 |1 |1 |1 |0 |
+ |8 |0 |0 |0 |1 |
+ |9 |1 |0 |0 |1 |
+ |A |0 |1 |0 |1 |
+ |B |1 |1 |0 |1 |
+ |C |0 |0 |1 |1 |
+ |D |1 |0 |1 |1 |
+ |E |0 |1 |1 |1 |
+ |F |1 |1 |1 |1 |
+
+
+Firmware
+--------
+Just `make` to build firmware. And consult with wiki for further information.
+
+- https://github.com/tmk/tmk_keyboard/tree/master/keyboard/fc660c
+- https://github.com/tmk/tmk_keyboard/wiki
Datasheets
- 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
+- JST S5B-PH-SM4: http://www.jst-mfg.com/product/pdf/eng/ePH.pdf
+- Hirose UX60SC-MB-5S8: https://www.hirose.com/product/en/products/UX/UX60SC-MB-5S8%2880%29/
+- TYU TU1252WNR-05S: http://php2.twinner.com.tw/files/tyu/TU1252series.pdf
+- Tr(E42) for LED?: http://cj-elec.com/txUpfile/2013614923661845.pdf
3.3V power supply
> Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
+
Digipot AD5258
--------------
Controller can operate AD5258 via I2C to change actuation point of keys. This may make keyboard unusable accidentally and it will be difficult to recovery in some situation. For safety firmware doesn't support it at this point, though.
Lower value of RDAC register causes shallower actuation point.
+
+USB connector board
+-------------------
+The keyboard has USB receptacle on small separate 1.0mm-thick PCB. USB receptacle is Hirose UX60SC-MB-5S8 while wire-to-PCB connector is TYU TU1252WNR-05S.
+
+http://i.imgur.com/Nucn6h9.jpg
+
+
Resources
---------
- Pics: http://imgur.com/a/HhyIq
projects / max / tmk_keyboard.git / blobdiff