8 digit Homemade Numberpad for Interactive Pen Display

thingiverse

Human: Next-Level Design Upgrade for the Monoprice 19" Interactive Pen Display's Homemade Hot Button Pad. Utilizing the pre-existing screw holes on the monitor, this enhanced design allows for a horizontal configuration on top. It leverages the Arduino Teensy 2.0 to efficiently interface with the PC. To facilitate assembly, I have provided the STL and Blender files. Assembly Instructions: The faceplate was printed upside-down using PLA. Two Adafruit 1x4 keypads were used, while a Teensy 2.0 - an Arduino-compatible microcontroller - enabled seamless communication between the keypads and the PC. The Teensy boasts ample input options, allowing for versatile programming capabilities akin to a keyboard. Secure the Teensy in its cubby hole using a minimal amount of hot glue. Here's the custom code for the board: Define button count: const int button_count = 8; Specify pin numbers for buttons from top to bottom: const int pins[] = {18,19,20,21,0,1,2,3}; Determine the mods and keys pressed with each button push: const short mods[] = {0,0,0,0,0,KEY_LEFT_CTRL,KEY_LEFT_CTRL,0}; const short keys[] = {' ','p','b','e','/','z','y',KEY_TAB}; Utilize byte arrays to track button holds: byte holds[] = {0,0,0,0,0,0,0,0}; Set up the board with this code: void setup() { for(int i=0;i