Mikroelektronika MikroE Development Kits MIKROE-198 Data Sheet

MikroElektronika

The  DIGITAL  Potentiometer  additional  board  is  used  for  digital  resistance  regulation.  Resistance  regulation  is  performed  via  SPI 

communication between the additional board and the microcontroller supplied on a development system. The board is connected to 

a development system via a 2x5 female connector on the additional board and a 2x5 male connector on the development system. 

Depending on the development system to be connected to the additional board, it is necessary to set the appropriate switches on the DIP 

switch SW1 to the ON position. Screw terminals CN2 and CN3 are used to connect the potentiometer to a controlled device (for example, 

audio amplifier’s volume regulation). Next to these connectors, there are pins the marks of which have the following meanings: 

PA  

- potentiometer terminal A connection;

PW  

- potentiometer wiper connection; and

PB  

- potentiometer terminal B connection.

Figure 1: DIGITAL Potentiometer additional board

MCP41010 circuit is a 

digital potentiometer

Connectors used to connect the 

additional board to a controlled device

Figure 2: Back of the DIGITAL Potentiometer additional board

2x5 female connector enables 

connection with development systems

DIP switch SW1 is used to turn on MOSI, SCK and CS lines that connect a microcontroller and the aditional board. 

When the DIGITAL Potentiometer board is connected to EasyPIC, LV18F, EasyLV-18F, Easy24-33 and BigPIC development systems, 

the following switches on the DIP switch SW1 should be set to the ON position:

SW1-1 -> MOSI

SW1-4 -> SCK

For EasyAVR and Easy8051 development systems, the following switches should be set to the ON position:

SW1-3 -> MOSI

SW1-6 -> SCK

For the EASYdsPIC development system, the following switches on the DIP switch SW1 should be set to the ON position:

SW1-2 -> MOSI

SW1-5 -> SCK

The DIGITAL Potentiometer additional board is capable of regulating up to 10k resistance.