I was thinking the same thing but either I'm approaching it wrong or I'm missing a piece of the puzzle.Muirium wrote: ↑Update: Yeah, that new text is more like it. Again, I’m just guessing, but it sounds to me like you could poll the keyboard over and over quite easily, using a single pulse low-hi-low from KBACK. The 250 ms figure means the keyboard will announce the last key code every quarter of a second until it’s polled again. They were really thinking of SLOOOOOOOW computers at the time!
Yea, almost always with the KeyTronic F&F, the foam and foil are shot and need to be replaced. I've done this with a number of these boards and while it is tedious, it's not really difficult. Here's a link to the first one I did:snacksthecat wrote: ↑I actually do think the foam is goobered. I took the PCB off the switch/plate assembly and checked it out. It looks to me like they're all deteriorated and (possibly?) not making contact with the pads.
Thanks for this. I opted to buy a set since I'm a bit swamped at the moment.OldIsNew wrote: ↑I think someone is selling replacement F&F pads on eBay, but I figure it's more fun to do it yourself.
This is true for the very top row of keys up to keyboard "7". Keyboard "8" gives 0000000 (decimal 0) for some reason. Then all the other switches on the board match the switch number printed on the back except they're off by 1.
Code: Select all
const int KBACK = 0;
const int KBRDY = 5;
const int KBDATA = 1;
const long keyMap[103] = { KEY_F8, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, 0, KEY_F9, KEY_F10,
KEY_ESC, KEY_TILDE, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, KEY_0, KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_INSERT, KEY_DELETE, KEYPAD_ENTER, KEYPAD_SLASH, KEYPAD_SLASH, KEYPAD_ASTERIX,
KEY_SCROLL_LOCK, KEY_TAB, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, KEY_P, KEY_LEFT_BRACE, KEY_RIGHT_BRACE, 0, KEY_HOME, KEY_END, KEYPAD_7, KEYPAD_8, KEYPAD_9, KEYPAD_MINUS,
KEY_NUM_LOCK, KEY_CAPS_LOCK, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, KEY_QUOTE, 0, KEY_PAGE_UP, KEY_PAGE_DOWN, KEYPAD_4, KEYPAD_5, KEYPAD_6, KEYPAD_PLUS,
KEY_PAUSE, MODIFIERKEY_SHIFT, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, KEY_PERIOD, KEY_SLASH, 0, MODIFIERKEY_RIGHT_SHIFT, KEY_ENTER, KEY_UP, KEY_DOWN, KEYPAD_1, KEYPAD_2, KEYPAD_3, KEYPAD_ENTER,
KEY_PRINTSCREEN, MODIFIERKEY_ALT, KEY_SPACE, MODIFIERKEY_RIGHT_CTRL, KEY_LEFT, KEY_RIGHT, KEYPAD_0, KEYPAD_0, KEYPAD_PERIOD };
bool makeCode;
byte messageArray[9]; // Full word being sent by keyboard
byte switchNum = 0; // switch Number
int numBits = 0; // How many bits of the scancode have been read?
unsigned long nowMillis;
unsigned long prevMillis;
void isr() {
// Scrap old / incomplete message
nowMillis = millis();
if (nowMillis - prevMillis > 250) {
numBits = 0;
}
prevMillis = nowMillis;
// Read the bit
messageArray[numBits] = digitalRead(KBDATA);
numBits++;
// Once we have a whole word...
if (numBits == 9) {
// Copy the code portion of the message
for (int i = 0; i < 7; i++) {
bitWrite(switchNum, i, messageArray[i]);
}
// Copy the make / break portion
makeCode = messageArray[7];
// Send the instruction...
long key = keyMap[switchNum];
if (makeCode == 1) {
Keyboard.press(key);
}
else {
Keyboard.release(key);
}
// Reset
numBits = 0;
switchNum = 0;
}
}
void pollKeyboard() {
if (digitalRead(KBRDY) == LOW) {
digitalWrite(KBACK, LOW);
}
else {
digitalWrite(KBACK, HIGH);
}
}
void setup() {
attachInterrupt(digitalPinToInterrupt(5), isr, FALLING);
pinMode(KBACK, OUTPUT);
pinMode(KBRDY, INPUT_PULLUP);
pinMode(KBDATA, INPUT_PULLUP);
Serial.begin(9600);
}
void loop() {
pollKeyboard();
}Caps Lock should be mapped to Control since that is where Control belongs,I severely dislike the Caps key so I may be a bit biased.snacksthecat wrote: ↑Any cool ideas for a keymap?
http://www.keyboard-layout-editor.com/# ... 8cf9ad1612
I have a couple of boards with this layout and I can attest that it fits quite nicely ergonomically speaking!Lanrefni wrote: ↑Caps Lock should be mapped to Control since that is where Control belongs,I severely dislike the Caps key so I may be a bit biased.
Finally got the new foam/foil pads in. I was waiting for them to come before taking this project any further.SilenceGoo wrote: ↑Pretty beauty, could you provide some info of the switch?
Oh you're kidding me! That's not right! Have to have the foil. For foil I've been using a Mylar "Emergency Blanket" and punching with a 7/16 " leather punch. You can get this at WalMart, etc. Do have to check each foil disk with the multimeter before gluing them on to the foam disk - non-conductive side to the PCB. I think Sangdrax said he has used electrostatic bags that are coated on both sides and dosen't have to bother with the multimeter with those.snacksthecat wrote: ↑ So it turns out that the replacement foam bits that I bought are just that; replacement FOAM....
