Intelligent Cube Hopper MKII
Rev 2.0
Page 7
3. Interface signals
Table 1 lists all signals.
Pin
Signal Type
Description
1
High impedance (internal 100K pull up to 5V)
Connected to Hopper Low Level signal plate
2
Low impedance (internal 100 ohm to 0V)
Connected to Hopper Low Level ground plate
3
Opto Coupler LED (Anode) with 4K7 serie resistor
Start input
4
Opto Coupler LED (Anode) with 4K7 serie resistor
Mode input
5
Opto Coupler open collector output
Busy / Ready output
6
Opto Coupler open collector output
Coin Exit output
7
Power supply input
Power Supply (12 or 24VDC)
8
Opto Coupler Input LEDs(-) and output transistors
emitter are connected to this pin.
Signal common ground
9
Power supply ground
Power ground (0V)
Table 1: Pin description
3.1. Low Level Pins
Pin 1 and 2 are connected directly to the low level plates of the hopper.
Pin 2 is also internal connected to the power supply ground through a 100 ohm resistor.
Any charge that is build up by the friction of the moving coins is discharged through this resistor.
Pin 2 is also connected to the microcontroller via a buffer. The busy /ready signal (pin 5) in influenced by
the status of this low level pin.
3.2. Start input
The start input is connected to the microcontroller via an opto coupler. The signal common (pin 8) is
usually connected to the signal ground of the machine controlling the hopper.
The start input must be set to a voltage between 5-24 VDC (input high) in order to activate the start
signal.
3.3. Mode input
This input can be used to put the hopper in logic mode (input low) or pulsed mode (input high).
3.4. Busy / Ready output
This open collector output is used to indicate the status of the hopper.
The output is active low if pin 8 (signal common) is 0V.
The Busy / Ready output is set active low if the hopper is busy paying out coins or if the low level
plates do not make contact anymore through the coins.
3.5. Coin Exit output
The coin exit output is active low if pin 8 (signal common) is 0V.
The coin-sensor may be a normally open or normally closed type.
In mode 1 and 2, after a coin has left the hopper, a active low pulse of 50ms is transmitted.
In mode 0, the coin exit signal follows the opto-sensor signal of the hopper in such a way, that when a
coin passes the opto-interrupter, the coin exit signal will go low.
3.6. VIN
The power supply must be 12 or 24VDC depending on JP3. The power supply must be able to deliver
2.5 amps continuously and 5 amp peaks during 50 ms.
3.7. Signal Gnd
This signal is the common minus(-) input of the opto-coupled inputs and outputs. It is usually
connected to the power ground pin (pin 9) of the interface connector.
