chording keyboard for programming

At my blog you can read this project from day one and see some mistakes I made while designing. The Bluetooth module can be left out and it will work on USB with no changes to the code. If not, please explore Instructables for programming an Arduino Micro. This is where a mechanical keyboard comes in handy since you can consequently change the keycaps to suit the new arrangement. 4 = function keys int chordValue = 0; int randomNumber01; int randomNumber02; int randomNumber03; int randomNumber04; int debounceDelay = 20; int mouseDelay = 40; int mouseValues[] = {0,0,0}; int startingMouseValues[] = {0,0,0}; int mouseDivisionValues[] = {-15,1,-1}; // Booleans boolean buttons[7]; // Pinky is [0] and far thumb is [6] boolean latchingButtons[7]; boolean acquiringPresses = LOW; boolean calculateKey = LOW; boolean stickyCapsLock = LOW; boolean stickyNumlock = LOW; boolean stickySpecialLock = LOW; void setup(){ Serial1.begin(9600); Serial.begin(9600); Serial.println("Up and runnning"); Keyboard.begin(); Mouse.begin(); randomSeed(analogRead(0)); pinMode(pinkyButton, INPUT_PULLUP); pinMode(ringButton, INPUT_PULLUP); pinMode(middleButton, INPUT_PULLUP); pinMode(indexButton, INPUT_PULLUP); pinMode(nearTButton, INPUT_PULLUP); pinMode(centerTButton, INPUT_PULLUP); pinMode(farTButton, INPUT_PULLUP); }, void loop(){ acquiringPresses = checkButtonArray(); if (acquiringPresses && onlyFarThumbPressed(farTButton)){ doMouseSTUFF(); } if (acquiringPresses){ delay(debounceDelay); // Instead of a true software debounce this will wait a moment until the first button press has settled. for (int i = 0; i < 7; i++){ boolean buttonState = !digitalRead(pinkyButton + i); if (buttonState){ buttons[i] = HIGH; }else{ buttons[i] = LOW; } } for (int i = 0; i < 7; i++){ if (buttons[i]){ return HIGH; } } return LOW; }, void typingChord(){ while (acquiringPresses){ for (int i = 0; i < 7; i++){ if (buttons[i] == HIGH){ latchingButtons[i] = HIGH; } } acquiringPresses = checkButtonArray(); } }, void sendKeyPress(){ for (int i = 0; i < 7; i++){ if (latchingButtons[i] == HIGH){ chordValue = chordValue + customPower(2, i); } } Serial1.write(keySwitch(chordValue)); }, int customPower(int functionBase, int functionExponent){ int functionResult = 1; for (int i = 0; i < functionExponent; i++){ functionResult = functionResult * functionBase; } return functionResult; }, int keySwitch(int functionChordValue){ switch (functionChordValue){ case 0: prefixChord = 0; Keyboard.releaseAll(); stickyNumlock = LOW; stickyCapsLock = LOW; stickySpecialLock = LOW; return 0; // error case 1: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('w'); return 119; // 119 is equivalent to the letter 'w' case 1: prefixChord = 0; prefixChord = 0; Keyboard.print('W'); return 87; case 2: prefixChord = 0; prefixChord = 0; Keyboard.print('5'); return 53; case 3: prefixChord = 0; prefixChord = 0; Keyboard.print('%'); return 37; case 4: prefixChord = 0; Keyboard.write(198); return 198; } case 2: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('y'); return 121; // 121 is equivalent to the letter 'y' case 1: prefixChord = 0; Keyboard.print('Y'); return 89; case 2: prefixChord = 0; Keyboard.print('4'); return 52; case 3: prefixChord = 0; Keyboard.print('$'); return 36; case 4: prefixChord = 0; Keyboard.write(197); return 197; } case 3: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('u'); return 117; // 117 is equivalent to the letter 'u' case 1: prefixChord = 0; Keyboard.print('U'); return 85; case 2: prefixChord = 0; Keyboard.print('"'); Keyboard.print('"'); Keyboard.press(KEY_LEFT_ARROW); Keyboard.releaseAll(); Serial1.print('"'); Serial1.print('"'); return 0x0B; case 3: prefixChord = 0; Keyboard.print('"'); Keyboard.print('"'); Keyboard.press(KEY_LEFT_ARROW); Keyboard.releaseAll(); Serial1.print('"'); Serial1.print('"'); return 0x0B; case 4: prefixChord = 0; return 0; } case 4: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('r'); return 114; // 114 → r case 1: prefixChord = 0; Keyboard.print('R'); return 82; case 2: prefixChord = 0; Keyboard.print('3'); return 45; case 3: prefixChord = 0; Keyboard.print('#'); return 35; case 4: prefixChord = 0; Keyboard.write(196); return 196; } case 5: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print("24Eng"); Serial1.print("24Eng"); return 0; case 1: prefixChord = 0; Keyboard.print("24hourengineer.com"); Serial1.print("24hourengineer.com"); return 0; case 2: prefixChord = 0; Keyboard.print("Brian '24HourEngineer' McEvoy"); Serial1.print("Brian '24HourEngineer' McEvoy"); return 0; case 3: prefixChord = 0; Keyboard.print("Brian McEvoy"); Serial1.print("Brian McEvoy"); return 0; case 4: prefixChord = 0; Keyboard.print("Easter Egg"); Serial1.print("Easter Egg"); return 0; } case 6: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('h'); return 104; // 104 → h case 1: prefixChord = 0; Keyboard.print('H'); return 72; case 2: prefixChord = 0; Keyboard.print('0'); Keyboard.print('0'); Serial.print('0'); return 48; case 3: prefixChord = 0; Keyboard.print('0'); Keyboard.print('0'); Serial.print('0'); return 48; case 4: prefixChord = 0; return 0; } case 7: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('s'); return 115; // 115 → s case 1: prefixChord = 0; Keyboard.print('S'); return 83; case 2: prefixChord = 0; Keyboard.print('-'); return 45; case 3: prefixChord = 0; Keyboard.print('_'); return 95; case 4: prefixChord = 0; return 0; } case 8: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('i'); return 105; // 105 → i case 1: prefixChord = 0; Keyboard.print('I'); return 73; case 2: prefixChord = 0; Keyboard.print('2'); return 50; case 3: prefixChord = 0; Keyboard.print('@'); return 64; case 4: prefixChord = 0; Keyboard.write(195); return 195; } case 9: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('b'); return 98; // 98 → b case 1: prefixChord = 0; Keyboard.print('B'); return 66; case 2: prefixChord = 0; Keyboard.write(92); return 92; case 3: prefixChord = 0; Keyboard.print('|'); return 124; case 4: prefixChord = 0; Keyboard.write(205); return 205; } case 10: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('k'); return 107; // 107 → k case 1: prefixChord = 0; Keyboard.print('K'); return 75; case 2: prefixChord = 0; Keyboard.print('$'); return 36; case 3: prefixChord = 0; Keyboard.print('$'); return 36; case 4: prefixChord = 0; return 0; } case 11: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('z'); return 122; // 122 → z case 1: prefixChord = 0; Keyboard.print('Z'); return 90; case 2: prefixChord = 0; Keyboard.print('`'); return 96; case 3: prefixChord = 0; Keyboard.print('~'); return 126; case 4: prefixChord = 0; return 0; } case 12: switch (prefixChord){ case 0: prefixChord = 0; Keyboard.print('d'); return 100; // 100 → d case 1: prefixChord = 0; Keyboard.print('D'); return 68; case 2: prefixChord = 0; Keyboard.print('/'); return 47; case 3: prefixChord = 0; Keyboard.print('? Years of … I could also wind my own coils but that would probably be a waste of time. Sure, with enough interest a lot of folks will drill-down to the atomic level of technology and build their way back up. Das keyboard has moved from the usual Cherry MX switches we are used to and is instead using gamma Zulu switches. Like the 65% keyboard. Computer keyboards Chording, with a chorded keyboard or keyer allows one to produce as many characters as a QWERTY keyboard but with fewer keys and less motion per finger. Reduces the cost and complexity quite a bit. The only downside to this is that it is too large. A preferred embodiment of the invention contemplates ten key switches, each key switch corresponding to a different terminating member of an operator's hand, such that a 10-digit binary number is generated. All these changes might take long to relearn, but many admit that they have been able to type faster after shifting to the alternate layouts. What is Prototyping Model? The coils need to be fairly close and aligned for efficient power transfer. http://www.24hourengineer.com/2015/12/2015-12-01-t...As far as exposing the USB port I couldn't agree more. It’s a chording keyboard that’s meant to be used a standard PC input device by anyone who either can’t use a regular keyboard or has a need for speed. A stenotype, stenotype machine, shorthand machine or steno writer is a specialized chorded keyboard or typewriter used by … This keyboard comes with brown Cherry MX mechanical switches that make typing an absolute pleasure. I got this not too long ago from Adafruit. Think whether this is difficult or not has to do with the diameter of the coil. Love it so far. His lessons on typing with the chording keyboard are better than I could write so I recommend them. Only nitpick I have is the joystick/mouse could be a little better, like a nintendo switch style joystick or similar would be nice. It is super comfortable and made me type a little faster. A chording keyboard or Chorded keyboard is an input device where characters can be typed by pressing multiple keys at the same time. It allows you to change the key sequence in 100 different ways.

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