6 This file and the entire QMK port of this board are based on its TMK implementation: https://github.com/tmk/tmk_keyboard/tree/master/keyboard/fc980c
10 - Keyboard Maintainer: [Balz Guenat](https://github.com/BalzGuenat)
11 - Hardware Supported: Hasu's Alt Controller (see below)
12 - Hardware Availability: https://geekhack.org/index.php?topic=90104.0
14 Make example for this keyboard (after setting up your build environment):
18 See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
20 To flash the firmware, press the reset button on the controller and run:
22 sudo make fc980c:default:dfu
26 This controller replaces original controller of Leopold FC980C and makes the keyboard programmable.
28 Discuss this here: https://geekhack.org/index.php?topic=90681.0
30 The keyboard is very similar electronically to its sibling model FC660C you can also refer this.
32 FC660C Alt Controller: https://geekhack.org/index.php?topic=88439.0
35 Actuation Point adjustment
36 --------------------------
37 You can adjust the actuation point of the keys by setting `ACTUATION_DEPTH_ADJUSTMENT` in `config.h`.
38 A value above 0 will result in a deeper, less sensitive actuation whereas a value above 1 will result in a more shallow, more sensitive actuation.
39 Be careful with this setting and use small values (+/-5).
40 See the `actuation-point-example` keymap for an example.
41 For more information, inspect the `fc660c_i2c` branch of TMK [here](https://github.com/tmk/tmk_keyboard/tree/fc660c_i2c).
42 Functionality for writing to the EEPROM has deliberately not been included to reduce the chance of people messing up their boards.
47 This project uses common and familiar ATmega32u4 but any microcontroller with 5V I/O will work.
49 - Schematic of Alt controller: schematic.pdf
54 Connector bridging between switch board and controller is Hirose DF14A-20P-1.25H.
57 | board | board |Description |Function |ATmega32u4
58 |--------|-----------|--------------------------------------|-----------|------------
60 | 2 |19 | GND |GND |GND
61 | 3 |18 | GND |GND |GND
62 | 4 |17 | 3.3V |V33 |3.3V/5V
64 | 6 |15 |*Z6-TP1684-4-HYS(o) |KEY_HYS |PC7
65 | 7 |14 |*Z6-TP1684-2-KEY(i) |KEY_STATE |PC6
66 | 8 |13 |*Z7-AD5258-5-SCL(I2C) |I2C_SCL |PD0(TWI)
67 | 9 |12 |*Z7-AD5258-4-SDA(I2C) |I2C_SDA |PD1(TWI)
68 |10 |11 |*Z5/4-LV4051A-6-~EN(Lo:Z5 Hi:Z4) |COL_bit3 |PB3
69 |11 |10 |+Z3-LV07A-5 (LV4051A-9-C) |COL_bit2 |PB2
70 |12 | 9 |+Z3-LV07A-1 (LV4051A-10-B) |COL_bit1 |PB1
71 |13 | 8 |+Z3-LV07A-3 (LV4051A-11-A) |COL_bit0 |PB0
72 |14 | 7 |+Z1-LVC138A-3-C |ROW_bit2 |PD6
73 |15 | 6 |+Z1-LVC138A-2-B |ROW_bit1 |PD5
74 |16 | 5 |+Z1-LVC138A-1-A |ROW_bit0 |PD4
75 |17 | 4 |+Z1-LVC138A-4-~G2A Z6-TP1684-5-~EN |KEY_ENABLE |PD7
76 |18 | 3 |+Q4-NPN-B-NumLock_LED(Hi:On) |LED_NUML |PB4
77 |19 | 2 |+Q3-NPN-B-CapsLock_LED(Hi:On) |LED_CAPS |PB5
78 |20 | 1 |+Q2-NPN-B-ScrollLock_LED(Hi:On) |LED_SCRL |PB6
89 | |0 |1 |2 |3 |4 |5 |6 |7 |8 |9 |A |B |C |D |E |F |
90 |----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
91 | 0|Left|RCtl|RAlt| |Down|P. |Righ|P0 |X |LGui|` |V | |Esc |M |Spc |
92 | 1|Fn |. | | |P1 |PEnt|P2 |P3 |Z |LAlt|LCtl|C |K | |N |B |
93 | 2|' |/ |, | |P4 |P+ |P5 |P6 |D |A |LSft|F |J |F1 |H |G |
94 | 3|RSft|; |L |] |Up | | | |S |Q |Caps|R |I |F3 |U |T |
95 | 4| | | | | | | | | | | | | | | | |
96 | 5|= |- |0 |\ |NLck|BSpc|P/ |P* |3 |2 | |4 |9 |F2 |7 |6 |
97 | 6|[ |P |O |Ent |P7 |P- |P8 |P9 |W |1 |Tab |E |8 |F4 |Y |5 |
98 | 7|F11 |F10 |F9 |F12 |Del |PgDn|Ins |PgUp| | | | |F8 |F5 |F7 |F6 |
103 LV138A(Z1) selects one of 8 row lines and gives strobe by enabling with ~G2A(17).
105 |ROW |bit0|bit1|bit2|
106 |----|----|----|----|
119 LV4051A(Z4, Z5) select one of 16 column lines to sense capacitance of switches.
121 |COL |bit0|bit1|bit2|bit3|
122 |----|----|----|----|----|
143 Just `make` to build firmware. And consult with wiki for further information.
145 - https://github.com/tmk/tmk_keyboard/tree/master/keyboard/fc660c
146 - https://github.com/tmk/tmk_keyboard/wiki
151 - Hirose DF14A-20P-1.25H: http://www.mouser.com/ds/2/185/DF14_catalog-939195.pdf
152 - LV07A: http://www.ti.com/lit/ds/symlink/sn74lv07a.pdf
153 - LV138A: http://www.ti.com/lit/ds/symlink/sn74lvc138a.pdf
154 - LV4051A: http://www.ti.com/lit/ds/symlink/sn74lv4051a.pdf
155 - AD5258: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
156 - JST S5B-PH-SM4: http://www.jst-mfg.com/product/pdf/eng/ePH.pdf
157 - Hirose UX60SC-MB-5S8: https://www.hirose.com/product/en/products/UX/UX60SC-MB-5S8%2880%29/
158 - Tr(E42) for LED?: http://www.bklighting.com/cimages/specs-758.pdf
159 - TYU TU1252WNR-05S: http://php2.twinner.com.tw/files/goodjob/TY1252series.pdf
164 LV07A and LVC138A are 5V-tolerant and can be powered with 5V, the keyboard will work only with 5V power supply. It may not be completely safe to operate LV138A with 5V Vcc, its datasheet says:
166 > Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
171 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.
173 Lower value of RDAC register causes shallower actuation point.
178 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.
180 http://i.imgur.com/Nucn6h9.jpg
185 - Pics: http://imgur.com/a/HhyIq