Joystick 2 Click Board

The Joystick 2 Click Board™ includes the SKRHABE010 by Alps, which is the omni directional joystick switch with center-push function. The mentioned joystick switch have 5 output pins – each for a single switch direction. With its body height of 1.85mm, it is very easy to implement it in various designs and thanks to the simple principles of operation, users have the ability to adapt it in a desired way. Its long-life (of 1 million life cycles) guarantees the rigidity and durability of the product.

How Does The Joystick 2 Click Board™ Work?

The Joystick 2 Click Board™ contains a SKRHABE01, a 4-direction joystick switch with Center-push Function by Alps. It is positioned on the board so it is easily accessible for interacting and the lever could be pressed, activating the microswitch that way. The microswitch is actuated by applying very little physical force, using a tipping-point mechanism which results in fast and reliable snap-in action. It has both NO (Normal open) contacts routed to the mikroBUS™ over the port expander. The switch lines are equipped with the RC filters, which serve as debouncing elements for the switch and also to pull-up the lines when they are left afloat. This way, the contact bouncing is reduced even further, resulting in an accurate detection of the switching event.

As already mentioned above, this click board™ contains the port expander, relatively large number of needed GPIO pins for the joystick switch. Used IC is PCA9538A, Low-voltage 8-bit I2C-bus I/O port with interrupt and reset, from NXP Semiconductors. It uses the I2C communication for interfacing with the main MCU, which simplifies the number of needed pins, and therefore the design itself. The Active LOW reset input (RESET) and Open-drain active LOW interrupt output (INT) pins helps simplifying the design even further.

The Joystick 2 Click Board™ also features an onboard jumper selector, which is used to select the voltage level that is connected to the microswitch input pin, making it usable for both 3V3 and 5V capable microcontoller pins.

SPECIFICATIONS

PINOUT DIAGRAM

This table shows how the pinout of the Joystick 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
NC	1	AN	PWM	16	NC
Reset IN	RST	2	RST	INT	15	INT	Interrupt Out
NC	3	CS	RX	14	NC
NC	4	SCK	TX	13	NC
NC	5	MISO	SCL	12	SCL	I2C Clock
NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	5V	Power supply
Ground	GND	8	GND	GND	9	GND	Ground

ONBOARD SETTINGS AND INDICATORS

JOYSTICK 2 CLICK ELECTRICAL SPECIFICATIONS