Gravity: Magnetic Latching Relay for ESP32 / Arduino

A magnetic latching relay with low power consumption, noiseless operation, and compatibility with popular microcontrollers for smart home and lighting applications.

AOfficial table 2 row 1
Trigger End A / Provide the pulse with a width of more than 2ms to reverse relay state
Type · digital io
+Official table 2 row 2
Positive / 3.3V-5V
Type · power
-Official table 2 row 3
Negative /
Type · ground
BOfficial table 2 row 4
Trigger End B / Provide the pulse with a width of more than 2ms to reverse relay state
Type · digital io
+Official table 2 row 5
Positive / 3.3V-5V

Start wiring

Motor Drivers · Actuators

Verify supply voltage and logic levels before powering up.

Module pins: +, -. Schematik maps them to your board in the app.

Related groups

4 groups

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 33 parts

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 29 parts

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

Boards · Microcontroller boards · 24 parts

Pin	Position	Type	Function
A	Official table 2 row 1	digital io	Trigger End A / Provide the pulse with a width of more than 2ms to reverse relay state
+	Official table 2 row 2	power	Positive / 3.3V-5V
-	Official table 2 row 3	ground	Negative /
B	Official table 2 row 4	digital io	Trigger End B / Provide the pulse with a width of more than 2ms to reverse relay state
+	Official table 2 row 5	power	Positive / 3.3V-5V
-	Official table 2 row 6	ground	Negative /
A	Official table 2 row 7	pin	Relay Contact A /
COM	Official table 2 row 8	pin	Relay Common end /
B	Official table 2 row 9	pin	Relay Contact B /

Pinout

Start wiring

Connectors

Displays

Air quality

MCUs and boards