REED Click

How does it work?

REED Click is based on the CT10-1540-G1, a Coto Classic C10 series molded reed switch from Coto Technology. This hermetically sealed low-current dry reed switch is an SPST type (single pole, single throw), having normally-open ruthenium contacts. The sensor is a double-ended type and may be actuated with an electromagnet, a permanent magnet, or a combination of both. The CT10-1540-G1 designation indicates that this sensor has a sensitivity range from 15 to 40AT and a release range from 3 to 39AT. The sensor has resistance to vibration of 10G and resistance to a shock of 100G, which ensures that the switch will not be activated with anything, but the electromagnetic field.

The REED Click uses a single CS pin of the mikroBUS™ socket connected to the host MCU to output 1 or 0, depending on whether the switch is closed or open. The sensor has two separate pole contacts inside a glass casing (north and south). When a magnetic field is applied, it snaps them shut, thus activating the switch. Once the magnet is removed, they open up again. The sensor is activated by a magnetic field and not the distance of that field to the sensor. A stronger but farther field counts more than a weaker but closer one. In addition, this Click board™ features an L1 LED to present the activated switch visually.

This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the PWR SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.

Specifications

Pinout diagram

This table shows how the pinout on REED Click 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
	NC	2	RST	INT	15	NC
REED Switch Output	CS	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	NC
	NC	6	MOSI	SDA	11	NC
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

REED Click electrical specifications