diff --git a/smartboard/smartboard.ino b/smartboard/smartboard.ino
new file mode 100644
index 0000000..8adcb16
--- /dev/null
+++ b/smartboard/smartboard.ino
@@ -0,0 +1,212 @@
+#include "Timer.h"
+Timer t;
+
+//Pinout for a pro micro, check schematic
+/*
+int D1 = 2;
+int D2 = 5;
+int D3 = 6;
+int D4 = 12;
+
+int A = 3;
+int B = 7;
+int C = 14;
+int D = 16;
+int E = 17;
+int F = 4;
+int G = 13;
+int DOT = 15;
+
+int SENS = 10;
+*/
+
+//Pinout for a nano
+int D1 = 4;
+int D2 = 7;
+int D3 = 8;
+int D4 = 14;
+
+int A = 5;
+int B = 9;
+int C = 16;
+int D = 18;
+int E = 19;
+int F = 6;
+int G = 15;
+int DOT = 17;
+
+int SENS = 12;
+
+double WAIT = 500; //Time between updates
+double CIRCUMF = 3.14 * 7; //Circumference of your wheel
+double dist = 0;
+int speedKMH = 0;
+
+bool got_signal = false;
+int rotations = 0;
+
+void draw_char(char c, int digit) {
+  digitalWrite(D1, LOW);
+  digitalWrite(D2, LOW);
+  digitalWrite(D3, LOW);
+  digitalWrite(D4, LOW);
+  digitalWrite(digit, HIGH);
+
+  if (digit == D4) {
+    digitalWrite(DOT, LOW);
+  } else {
+    digitalWrite(DOT, HIGH);
+  }
+  
+  switch(c) {
+    case '1':
+      digitalWrite(A, HIGH);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, HIGH);
+      digitalWrite(E, HIGH);
+      digitalWrite(F, HIGH);
+      digitalWrite(G, HIGH);
+      break;
+
+    case '2':
+      digitalWrite(A, LOW);
+      digitalWrite(B, LOW);
+      digitalWrite(C, HIGH);
+      digitalWrite(D, LOW);
+      digitalWrite(E, LOW);
+      digitalWrite(F, HIGH);
+      digitalWrite(G, LOW);
+      break;
+
+    case '3':
+      digitalWrite(A, LOW);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, LOW);
+      digitalWrite(E, HIGH);
+      digitalWrite(F, HIGH);
+      digitalWrite(G, LOW);
+      break;
+
+    case '4':
+      digitalWrite(A, HIGH);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, HIGH);
+      digitalWrite(E, HIGH);
+      digitalWrite(F, LOW);
+      digitalWrite(G, LOW);
+      break;
+
+    case '5':
+      digitalWrite(A, LOW);
+      digitalWrite(B, HIGH);
+      digitalWrite(C, LOW);
+      digitalWrite(D, LOW);
+      digitalWrite(E, HIGH);
+      digitalWrite(F, LOW);
+      digitalWrite(G, LOW);
+      break;
+
+    case '6':
+      digitalWrite(A, LOW);
+      digitalWrite(B, HIGH);
+      digitalWrite(C, LOW);
+      digitalWrite(D, LOW);
+      digitalWrite(E, LOW);
+      digitalWrite(F, LOW);
+      digitalWrite(G, LOW);
+      break;
+
+    case '7':
+      digitalWrite(A, LOW);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, HIGH);
+      digitalWrite(E, HIGH);
+      digitalWrite(F, HIGH);
+      digitalWrite(G, HIGH);
+      break;
+
+    case '8':
+      digitalWrite(A, LOW);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, LOW);
+      digitalWrite(E, LOW);
+      digitalWrite(F, LOW);
+      digitalWrite(G, LOW);
+      break;
+
+    case '9':
+      digitalWrite(A, LOW);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, LOW);
+      digitalWrite(E, HIGH);
+      digitalWrite(F, LOW);
+      digitalWrite(G, LOW);
+      break;
+
+    case '0':
+      digitalWrite(A, LOW);
+      digitalWrite(B, LOW);
+      digitalWrite(C, LOW);
+      digitalWrite(D, LOW);
+      digitalWrite(E, LOW);
+      digitalWrite(F, LOW);
+      digitalWrite(G, HIGH);
+      break;
+  }
+  delay(6);
+}
+
+void setup() {
+  pinMode(D1, OUTPUT);
+  pinMode(D2, OUTPUT);
+  pinMode(D3, OUTPUT);
+  pinMode(D4, OUTPUT);
+  
+  pinMode(A, OUTPUT);
+  pinMode(B, OUTPUT);
+  pinMode(C, OUTPUT);
+  pinMode(D, OUTPUT);
+  pinMode(E, OUTPUT);
+  pinMode(F, OUTPUT);
+  pinMode(G, OUTPUT);
+  pinMode(DOT, OUTPUT);
+
+  pinMode(SENS, INPUT_PULLUP);
+
+  t.every(WAIT, update_speed);
+}
+
+void loop() {
+  t.update();
+
+  if (digitalRead(SENS) and !got_signal) {
+    got_signal = true;
+    rotations++;
+  }
+
+  if (!digitalRead(SENS)) {
+    got_signal = false;
+  }
+
+  draw_char(speedKMH/1000%10 + '0', D1);
+  draw_char(speedKMH/100%10 + '0', D2);
+  draw_char(speedKMH/10%10 + '0', D3);
+  draw_char(speedKMH%10 + '0', D4);
+}
+
+void update_speed() {
+  /* 
+   *  Dividing by two because reed switch gets triggered twice a rotation
+   *  You probably won't need that if you opt for a hall sensor
+   */
+  dist = CIRCUMF * rotations / 2;
+  speedKMH = dist * 3.6 / (WAIT / 1000);
+
+  rotations = 0;
+}