Simple Electronics

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Description

USB Macro Pad

A super easy USB Macro pad using the Arduino pro micro (or compatible) board. This uses 16 Cherry MX style switches with keycaps that have spaces for printed labels in them. The sky is the limit!

If this isn't for you, check out Dustin Watts' ESP32 Touchdown!:

https://www.tindie.com/products/dustinwattsnl/esp32-touchdown/

https://www.youtube.com/watch?v=TJTbuOdeoFw

For this build you will need:

1n4007 Diodes:

World - https://s.click.aliexpress.com/e/_DdRbCyT

Canada - https://amzn.to/3PT0dlQ

USA & World - https://amzn.to/3PUxFsr

Arduino pro micro:

World - https://s.click.aliexpress.com/e/_DlKXO2X

Canada - https://amzn.to/3Oxa93m

USA & World - https://amzn.to/3OApXCu

Cherry MX-style Switches: (Outemu Black used here):

World - https://s.click.aliexpress.com/e/_DDg3zBH

Canada - https://amzn.to/3b9jW1X

USA & World - https://amzn.to/3osKzCk

Clear (labelable) Keycaps (for Cherry-MX style keys):

World - https://s.click.aliexpress.com/e/_DEVJ6D5

Canada - https://amzn.to/3aXVlxj

USA & World - https://amzn.to/3cGN7Kp

Thanks for watching!

Check out my website: https://www.simpleelectronics.ca

If you feel like supporting the channel, please consider supporting on Patreon:

https://www.patreon.com/SimpleElectronics

or get some cool merch!

https://teespring.com/stores/electronics-r-us

or buy anything from USA Amazon using my affiliate link:

https://amzn.to/3Iki6q7

or buy anything from Canadian Amazon using my affiliate link:

https://amzn.to/3FNxPfI

or buy anything on Banggood's site using my affiliate link:

https://www.banggood.com/custlink/mGvGJL5Qm1

or buy anything using my Aliexpress affiliate link:

https://s.click.aliexpress.com/e/_9u07X6

and if you feel so inclined, here is my Amazon wish list!

https://www.amazon.ca/hz/wishlist/ls/2BMH2EFGY31V1?ref_=wl_share

I have other channels!:

Dan Fixes Cars:

https://www.youtube.com/channel/UC8gQZ_5-DOb0oQVm66oTl6A

SE Con Dairy:

https://www.youtube.com/channel/UCL1jXgPQjCI0gWFLltq2bzg

Code

Arduino

#include <Keyboard.h>
#include <SimpleKeypad.h>

const byte nb_rows = 4;                         // four rows
const byte nb_cols = 4;                         // four columns
char key_chars[nb_rows][nb_cols] = {            // The symbols of the keys
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[nb_rows] = {9, 8, 7, 6};           // The pins where the rows are connected
byte colPins[nb_cols] = {5, 4, 3, 2};           // The pins where the columns are connected

SimpleKeypad kp1((char*)key_chars, rowPins, colPins, nb_rows, nb_cols);   // New keypad called kp1

void setup() {
  Serial.begin(9600);
  Serial.println("Press any key on the keypad and it will show up here :");
}

void loop() {
  char key = kp1.getKey();                      // The getKey function scans the keypad every 10 ms and returns a key only one time, when you start pressing it
  if (key) {                                    // If getKey returned any key
    Serial.println(key);                        // it is printed on the serial monitor
  }
  if (key == 'D') {
    Keyboard.press(KEY_F13);
    Keyboard.releaseAll();
  }
  if (key == '#') {
    Keyboard.press(KEY_F14);
    Keyboard.releaseAll();
  }
  if (key == '0') {
    Keyboard.press(KEY_F15);
    Keyboard.releaseAll();
  }
  if (key == '*') {
    Keyboard.press(KEY_F16);
    Keyboard.releaseAll();
  }
  if (key == 'C') {
    Keyboard.press(KEY_F17);
    Keyboard.releaseAll();
  }
  if (key == '9') {
    Keyboard.press(KEY_F18);
    Keyboard.releaseAll();
  }
  if (key == '8') {
    Keyboard.press(KEY_F19);
    Keyboard.releaseAll();
  }
  if (key == '7') {
    Keyboard.press(KEY_F20);
    Keyboard.releaseAll();
  }
  if (key == 'B') {
    Keyboard.press(KEY_F21);
    Keyboard.releaseAll();
  }
  if (key == '6') {
    Keyboard.press(KEY_F22);
    Keyboard.releaseAll();
  }
  if (key == '5') {
    Keyboard.press(KEY_F23);
    Keyboard.releaseAll();
  }
  if (key == '4') {
    Keyboard.press(KEY_F24);
    Keyboard.releaseAll();
  }
  if (key == 'A') {
    Keyboard.press(KEY_LEFT_SHIFT);
    delay(250);
    Keyboard.press(KEY_F13);
    delay(250);
    Keyboard.release(KEY_F13);
    delay(250);
    Keyboard.release(KEY_LEFT_SHIFT);
  }
    if (key == '3') {
    Keyboard.press(KEY_LEFT_SHIFT);
    delay(250);
    Keyboard.press(KEY_F14);
    delay(250);
    Keyboard.release(KEY_F14);
    delay(250);
    Keyboard.release(KEY_LEFT_SHIFT);
  }
    if (key == '2') {
    Keyboard.press(KEY_LEFT_SHIFT);
    delay(250);
    Keyboard.press(KEY_F15);
    delay(250);
    Keyboard.release(KEY_F15);
    delay(250);
    Keyboard.release(KEY_LEFT_SHIFT);
  }
    if (key == '1') {
    Keyboard.press(KEY_LEFT_SHIFT);
    delay(250);
    Keyboard.press(KEY_F16);
    delay(250);
    Keyboard.release(KEY_F16);
    delay(250);
    Keyboard.release(KEY_LEFT_SHIFT);
  }
}

CAD-Custom parts and enclosures

Case (back)

foot v1.stl

Case (front)

case front.stl

Download Gerbers

Jul 25,2022

2,929 views

USB Macro Pad

2 Layers PCB 94 x 116.8 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

A USB macro pad based on a Pro Micro Arduino and Cherry MX-style key switches.

2929

Published: Jul 25,2022

Download Gerber file 84

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