Barcrest MPU6 - Mpu6 I;O

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5.2 MPU6 I/O
The I/O for the MPU6 connections is given in the sections below.
5.2.1 Speaker Connections
Pin Function
1 Speaker Left Negative
2 Speaker Left Positive
3 Speaker Right Negative
4 Speaker Right Positive
5.2.2 Switch Connections (First MPU6 Horizon only)
Pin Function
9 Top door Switch
10 Bottom Door Switch
11 Hopper Dump Switch
12 Refill Switch.
13 Switch Common Ground
5.2.3 CCtalk Note Acceptor (Horizon Only)
Pin Function
19 Ground
58 CCtalk Data
5.2.4 Hopper (UK Horizon Only)
Pin Function
2 Hopper 24V Supply
19 Ground
54 CCtalk