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16-Key Capacitive Touch Sensing Shield BMK52T016

US$4.30

In stock

Quantity

97 pieces

Product ID

BMK52T016

The BMK52T016 is a capacitive touch sensing shield with on-board 16 touch keys that has a built-in touch MCU BS83B24C. It provides excellent stability and anti-interference ability.

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DESCRIPTION

When a finger touches the copper trace area on the PCB representing the switch area, the capacitance of this area will change.

The product determines the output status of the INT pin by detecting this change.

The BMK52T016 includes 16 touch keys. Development boards read the keys’ statuses via I²C interface and lights up the corresponding LED.

Touch keys’ sensitivity can be configured individually according to your application. For example, when you place an acrylic panel on the product, the capacitance of the copper foil area affected decreases. Therefore, the keys require higher sensitivity.

PRODUCT FEATURES

Operating voltage: 2.5V to 5.5V
Operating current: 4mA @5V
Standby current: < 30μA @5V
Excellent stability and anti-interference ability
It enters standby mode if does not sense a touch for 8 seconds.
Integrated 16 touch keys, the corresponding LED lights up once touch has been detected
Touch key sensitivity: 55 levels (individually configurable)
Interface: I²C (address: 0x70)
Dimension: 67 x 53 x 11 mm
Net weight: 14.9g
Product includes: 1. BMK52T016 x 1 | 2. 90° 5-pin header x 1

PIN DESCRIPTION

You can insert the product into an Arduino UNO or the BMduino-UNO, BM53A367A, which is designed by Best Modules.

You don't need an external cable, just connect the shield to Arduino UNO or the BM53A367A.

Reverse side of the BMK52T016

Oher pins are not used.

Pin name	BM53A367A pin	Function
INT	~D2	Output pin Non-detected: output high Detected: output low
SCL	D19/A5	I²C: clock line
SDA	D18/A4	I²C: data line
IOREF	VDD	Positive power
RESET	RESET	Reset BM53A367A
GND	GND	Ground

You can use the BMCOM on the BMK52T016 to connect to the BM53A367A as well.

Pin	Pin name	Description
1	GND	Ground
2	VDD	Power supply: 2.5V to 5.5V
3	SDA	I²C: data line
4	SCL	I²C: clock line
5	INT	Output pin Non-detected: output high Detected: output low

PRODUCT FAQs

Question 1: How long does the product enter sleep mode?

Answer: The product enters sleep mode if it doesn’t sense a touch in 8 seconds.

Question 2: How to wake up the product from sleep mode?

Answer: The product wakes up once it senses a touch.

Question 3: Can touch keys senses even if I put glass or acrylic on it?

Answer: Sure, you can put glass or acrylic with the maximum thickness of 3mm on the board, and it is recommended to configure sensitivity of touch keys to achieve the best touch feedback.

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