Simple Electronics

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Aravintha Raj Ravichandran

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Description

Another Macro Pad!

Yup! I made another one, this time with lights! Cherry MX (and equivalent) mechanical keyboard switches have a provision for a RGB LED and I decided to toss in some addressable ones in order to double the fun! The greatest part of this particular macro pad is that you can use any microcontroller you would like, instead of being stuck to a pro micro like my previous macro pad, AND you get to mix and match switches - go nuts!

R1, R2, R4, R5, R6, R7 are 5k (I used 4.7k)

R8, R9, R10 are 1k

R3 is 10k

R11 is 500R

Here are the parts you will need:

Outemu (or any Cherry MX equivalent) key switches:

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

USA and World: https://amzn.to/3osKzCk

Aliexpress: https://s.click.aliexpress.com/e/_DeaidSL

Keycaps which can accept a label:

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

USA and World: https://amzn.to/3cGN7Kp

Aliexpress: https://s.click.aliexpress.com/e/_DEVJ6D5

Hotswap sockets:

Canada: https://amzn.to/3u9FBwP

USA and World: https://amzn.to/3VA95zM

Aliexpress: https://s.click.aliexpress.com/e/_DDbBiXD

SK6812 Mini-E LEDs (reverse mount):

Aliexpress: https://s.click.aliexpress.com/e/_DEMO87h

100n 0805 capacitors:

Canada: https://amzn.to/3Vy0Vb4

USA and World: https://amzn.to/3VEwXm0

Aliexpress: https://s.click.aliexpress.com/e/_DcZIY9H

M3x6mm screws:

Canada: https://amzn.to/3VAMBPd

USA and World: https://amzn.to/3UjOCOz

Aliexpress: https://s.click.aliexpress.com/e/_DlkKWPh

Some more useful things:

3x4 Keypad:

Aliexpress: https://www.aliexpress.com/item/32530917534.html

"Cherry" style switch sampler:

Aliexpress: https://s.click.aliexpress.com/e/_DmvWdnd

Keyswitch remover:

Canada: https://amzn.to/3GWIZTr

USA and World: https://amzn.to/3uhUbCt

Aliexpress: https://s.click.aliexpress.com/e/_Dli9cxD

and some useful links:

V1 Macro Pad:

https://youtu.be/3iy2FWI8sWU

Listen to the Simple Electronics Podcast while you solder:

https://www.simpleelectronics.ca/podcast

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!:

SE-Made-A-Stream:

https://www.youtube.com/channel/UC4Ak1IVkuT5M66PayLOe19Q

Dan Fixes Cars:

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

SE Con Dairy:

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

Live Gaming:

https://www.twitch.tv/SimpleElectronicsYT

Disclaimer: Some links included in this description are affiliate links. If you purchase a product or service with the links that I provide I may receive a small commission. There is no additional charge to you!

Code

Code!

Arduino

//Written by Dan from the Simple Electronics YouTube channel: www.youtube.com/@simpleelectronics

// Beginning of Adafruit stuff I am using just for the Neopixels

#include <Adafruit_NeoPixel.h>
#define PIN        6 // On Trinket or Gemma, suggest changing this to 1
#define NUMPIXELS 16 // Popular NeoPixel ring size
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 250 // Time (in milliseconds) to pause between pixels

int red = 0;
int green = 0;
int blue = 0;

// End of Adafruit stuff for Neopixels

// Beginning of the LCD I2C stuff I use just for the display

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x3F, 16, 2);

// End of LCD I2C stuff just for the display

// Define your analog pin here - you can use any analog input
int analogPin = A0; 

// Define a variable to store the value read from the analogPin in
int analogVal = 0;

// Define a variable to determine which button was actually pressed
int pressedButton = 0;

// Use the test loop to determine analog values of your buttons and put the range here below:
const int btn1Min = 1022;
const int btn1Max = 1024;

const int btn2Min = 1012;
const int btn2Max = 1014;

const int btn3Min = 1002;
const int btn3Max = 1005;

const int btn4Min = 992;
const int btn4Max = 995;

const int btn5Min = 694;
const int btn5Max = 698;

const int btn6Min = 688;
const int btn6Max = 693;

const int btn7Min = 684;
const int btn7Max = 687;

const int btn8Min = 680;
const int btn8Max = 683;

const int btn9Min = 526;
const int btn9Max = 528;

const int btn10Min = 523;
const int btn10Max = 525;

const int btn11Min = 520;
const int btn11Max = 522;

const int btn12Min = 518;
const int btn12Max = 519;

const int btn13Min = 422;
const int btn13Max = 425;

const int btn14Min = 350;
const int btn14Max = 354;

const int btn15Min = 300;
const int btn15Max = 305;

const int btn16Min = 260;
const int btn16Max = 266;

void setup () 
{
  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
  pixels.clear(); // Set all pixel colors to 'off'

  lcd.init();
  lcd.backlight();
  lcd.clear();
  
  // Setup serial to use the serial monitor 
  Serial.begin (9600);
  
}

void loop () 
{
      // Test loop - uncomment this one to get the analog values of your buttons to calibrate your array
      /*
      val = analogRead (analogPin);
      Serial.println (String(val));
      */
      //read the analog value of the button matrix to the analogVal variable
      analogVal = analogRead (analogPin);
      
      //we need to run that read value through our function to get the actual pressed button (1-16) and 99 for nothing pressed
      pressedButton = getButton(analogVal);

      //print in our serial monitor which button has been pressed - uncomment for troubleshooting
      //Serial.println (String(pressedButton));
      //Serial.println (String(analogVal));

      //put in whatever you want your button(s) to do here:
      if (pressedButton == 1){
        //do what button 1 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("1");
          delay(DELAYVAL);
      }
      else if (pressedButton == 2){
        //do what button 2 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("2");
          delay(DELAYVAL);
      }
      else if (pressedButton == 3){
        //do what button 3 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("3");
          delay(DELAYVAL);
      }
      else if (pressedButton == 4){
        //do what button 4 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("4");
          delay(DELAYVAL);
      }
      else if (pressedButton == 5){
        //do what button 5 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("5");
          delay(DELAYVAL);
      }
      else if (pressedButton == 6){
        //do what button 6 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("6");
          delay(DELAYVAL);
      }
      else if (pressedButton == 7){
        //do what button 7 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("7");
          delay(DELAYVAL);
      }
      else if (pressedButton == 8){
        //do what button 8 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("8");
          delay(DELAYVAL);
      }
      else if (pressedButton == 9){
        //do what button 9 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("9");
          delay(DELAYVAL);
      }
      else if (pressedButton == 10){
        //do what button 10 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("10");
          delay(DELAYVAL);
      }
      else if (pressedButton == 11){
        //do what button 11 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("11");
          delay(DELAYVAL);
      }
      else if (pressedButton == 12){
        //do what button 12 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("12");
          delay(DELAYVAL);
      }
      else if (pressedButton == 13){
        //do what button 13 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("13");
          delay(DELAYVAL);
      }
      else if (pressedButton == 14){
        //do what button 14 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("14");
          delay(DELAYVAL);
      }
      else if (pressedButton == 15){
        //do what button 15 needs to do here
          lcd.clear();
          lcd.setCursor(0,0);
          lcd.print("The button is: ");
          lcd.setCursor(13,1);
          lcd.print("15");
          delay(DELAYVAL);
      }
      else if (pressedButton == 16){
        //do what button 16 needs to do here
        //Serial.println("The loop got this far!");
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("The button is: ");
        lcd.setCursor(13,1);
        lcd.print("16");

        red = random(75);
        green = random(75);
        blue = random(75);
        //More Neopixel stuff
        for(int i=0; i<NUMPIXELS; i++)
        {
          pixels.setPixelColor(i, pixels.Color(red, green, blue));
        }
        pixels.show();   // Send the updated pixel colors to the hardware.
        delay(DELAYVAL);
        //End of Neopixel stuff
      }
}

int getButton (int val)
{
  if (val <= btn1Max && val >= btn1Min) return 1;
  else if (val <= btn2Max && val >= btn2Min) return 2;
  else if (val <= btn3Max && val >= btn3Min) return 3;
  else if (val <= btn4Max && val >= btn4Min) return 4;
  else if (val <= btn5Max && val >= btn5Min) return 5;
  else if (val <= btn6Max && val >= btn6Min) return 6;
  else if (val <= btn7Max && val >= btn7Min) return 7;
  else if (val <= btn8Max && val >= btn8Min) return 8;
  else if (val <= btn9Max && val >= btn9Min) return 9;
  else if (val <= btn10Max && val >= btn10Min) return 10;
  else if (val <= btn11Max && val >= btn11Min) return 11;
  else if (val <= btn12Max && val >= btn12Min) return 12;
  else if (val <= btn13Max && val >= btn13Min) return 13;
  else if (val <= btn14Max && val >= btn14Min) return 14;
  else if (val <= btn15Max && val >= btn15Min) return 15;
  else if (val <= btn16Max && val >= btn16Min) return 16;
  else return 99;
}

CAD-Custom parts and enclosures

Case

V2-3-bottom.stl

Case

V2-3-top.stl

Download Gerbers

Nov 30,2022

2,491 views

Another Macro Pad!

2 Layers PCB 100 x 90 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

A macro pad which is backlit with addressable LEDs using cherry mx-style key switches sitting inside of hot-swappable sockets

2491

10.00 (1)

Published: Nov 30,2022

Standard PCB

Download Gerber file 25

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