diff --git a/Example_Keyboards/Powerbook_Keyboard_TB_RevNew/ADB_Trackball.ino b/Example_Keyboards/Powerbook_Keyboard_TB_RevNew/ADB_Trackball.ino
deleted file mode 100644
index eb3e0bf..0000000
--- a/Example_Keyboards/Powerbook_Keyboard_TB_RevNew/ADB_Trackball.ino
+++ /dev/null
@@ -1,161 +0,0 @@
-/* 
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-       http://www.apache.org/licenses/LICENSE-2.0
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-// This software implements an Apple ADB interface for a trackball. It uses a  
-// Teensy 3.2 and is based on the code from this Imgur post https://imgur.com/a/BQjt9le
-// 
-// Revision History
-// Initial Release Aug 3, 2021
-// 
-#define ADB_DATA_PIN 5 // TB bidirectional data pin
-//
-// TB Constants
-int ADB_TIMEOUT = 10000;
-// TB Functions
-static void send_0bit() {
- digitalWrite(ADB_DATA_PIN, LOW);
- delayMicroseconds(65);
- digitalWrite(ADB_DATA_PIN, HIGH);
- delayMicroseconds(35);
-}
-
-static void send_1bit() {
- digitalWrite(ADB_DATA_PIN, LOW);
- delayMicroseconds(35);
- digitalWrite(ADB_DATA_PIN, HIGH);
- delayMicroseconds(65);
-}
-
-static void attn() {
-  //delay(1);
-  digitalWrite(ADB_DATA_PIN, LOW);
-  delayMicroseconds(800-35);
-  send_0bit();
-}
-
-void send_talk_command() {
- //attn
- pinMode(ADB_DATA_PIN, OUTPUT);
- attn();
- //address (3) 0011
- //0
-  send_0bit();
-  send_0bit();
-  send_1bit();
-  send_1bit();
- //talk 11
-  send_1bit();
-  send_1bit();
- //register 00
-  send_0bit();
-  send_0bit();
- //stop bit
-  send_0bit();
- //start to stop time
- delayMicroseconds(140);
-
-}
-int receive_data_packet() {
- pinMode(ADB_DATA_PIN, INPUT);
- int data_time = 0;
- bool command_stop = false;
- int adb_data = 0;
- //begin reading ADB datapin
- 
- while(digitalRead(ADB_DATA_PIN)!=LOW && data_time < ADB_TIMEOUT){
-  //wait for beginning of start bit
-  data_time+=1;
-  delayMicroseconds(1);
- }
-
-  while(digitalRead(ADB_DATA_PIN)!=HIGH && data_time < ADB_TIMEOUT){
-  //wait for end of start bit
-  data_time+=1;
-  delayMicroseconds(1);
- }
-
- while(digitalRead(ADB_DATA_PIN)!=LOW && data_time < ADB_TIMEOUT){
-  //wait for beginning of first data bit
-  data_time+=1;
-  delayMicroseconds(1);
- }
-
- //data packet
- data_time = 0;
- while(!command_stop && data_time < ADB_TIMEOUT) {
-  int low = 0;
-  int high = 0;
-  bool bit_stop = false;
-  while(!bit_stop && data_time < ADB_TIMEOUT) {
-    
-    int adb_stream = digitalRead(ADB_DATA_PIN);
-    if(adb_stream == LOW) low+=1;
-    if(adb_stream == HIGH) high+=1;
-    if(adb_stream == LOW && high > 0) bit_stop = true;
-    if(high > 240){
-      bit_stop = true;
-      break;
-    }
-    data_time+=1;
-    delayMicroseconds(1);
-  }
-  if(high > 240){
-    command_stop = true;
-  }
-  //append the new data bit to adb_data
-  if(high > low && !command_stop) adb_data = (adb_data << 1) + 1;
-  if(low > high && !command_stop) adb_data = adb_data << 1;
-  
- }
- //stop bit 
- return adb_data;
-}
-
-void parse_data(int data) {
-      if(data !=0) {
-       int mousex = data & 0b0000000001111111;
-       int mousey = (data >> 8) & 0b01111111;
-       //the mouse value is
-        //7 bit two's complement
-       if((mousey & 0b1000000) != 0) {
-          mousey =  ((~mousey + 1) & 0b01111111) * -1;
-       }
-       if((mousex & 0b1000000) != 0) {
-          mousex =  ((~mousex + 1) & 0b01111111) * -1;
-       }
-       Mouse.move(mousex, mousey);
-       Mouse.move(mousex, mousey);
-
-      int mouseClick = data & 0b1000000000000000;
-      
-      if(mouseClick == 0) {
-        Mouse.set_buttons(1,0,0);
-      }
-      else if(mouseClick != 0) {
-        Mouse.set_buttons(0,0,0);
-      }
-     }
-}
-
-//
-//----------------------------------Setup-------------------------------------------
-void setup() {
-  
-}
-//
-//---------------------------------Main Loop---------------------------------------------
-//
-void loop() {   
-   send_talk_command();
-   parse_data(receive_data_packet());
-//
-  delay(20); // 
-}