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Shopping overview Pokeys microcontrollers 57U Pokeys microcontrollers 57E Pokeys 57U and PoKeys 57E USB and Ethernet versions
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How to connect different hardware to PoKeys cards
Shopping pages
On this page you can see how hardware is connected to PoKeys. Switches, all type of switches can be connected. Push buttons, normal switches, rotary switches…
PoKeys info pages
Switches are alway connected as shown, 1 wire goes to GND and the other goes to a Pokeys port, no matter which
Rotary switches
A rotary switch has one contact that is common to all switch positions. The common contact goes to GND, if you have a switch with 12 used positions than each position goes to a Pokeys port.  
Potentiometers
A potentiometer has 3 contacts. One outer contact goes to 3.3 Volt on the PoKeys card. This is a separate connection. The other outer contact goes to GND, the slider needs to be connected to a PoKeys port numbers 43 to 47. These are specific 12 bit analog ports that can handle potentiometers. To buy a potentiometer click here  
Encoders
Encoders always needs to ports to be connected to. Please use 2 successive ports. Like a potentiometer an encoder has 3 contacts but here the middle contact goes to GND. The outer contacts each go to a PoKeys port. If by turning the encoder the value goes up in stead of down, just switch both outer contacts. On the left you can see different types of encoders used in Flight Simulation. Note that each encoder has it’s specific characteristics and you will also need to configure none, 2x or 4x switching Flight Simulator software like ProSim will handle this for you. The following types have been tested with ProSim  
Led’s
Althought it is possible to connect led’s directly to PoKeys ports you need to be carefull as to not draw more than 4 mA per port and maximum 100 mA in total per Pokeys card. You will always need a resistor in serie with the led. We strongly advice you to use our led extension board, info here
7-segment displays
7-segment displays can be connected to a Pokeys card by means of the MicroDriver board. These board can drive up to 8 digits. You can connect up to 2 boards, 16 digits in total, to a PoKeys card. How to connect 7-segment drivers
Relais
Relais always needs to be connected by means of a transistor that can switch the amount of power that the relais needs. Never connect a relay directly to a PoKeys card. We now have specific relay boards that are suited to be connected to Pokeys card and Arduino’s. You can find them in the webshop, click here
LCD display
PoKeys devices support connecting one alphanumeric LCD module up to a size of 4x20 (4 rows, 20 columns). The selection of the module is limited by support for HD44780 or compatible chipset. Usually these displays come in various sizes - 1/2/4 line with 8/16/20 characters and colors (black letters on green background, white letters on blue background ...). Check the PoKeys manual about how to connect