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5V relay module for Arduino and other microcontroller projects
This module has 4 x 5V changover relays with the option of using them through optocouplers. There is an LED for each relay to indicate when it has been activated.
The relay allows the low current microprocessor outputs to switch higher currents and voltages. With the optocouplers it fully isolates the live side of the relays from your microprocessor, this will require a seperate 5V supply to power the relays.
Trigger voltage : 5VDC
Supply Voltage : 5VDC (only needed if using optoisolators)
5V relay module for Arduino and other microcontroller projects
This module has 8 x 5V changover relays with the option of using them through optocouplers. There is an LED for each relay to indicate when it has been activated.
The relay allows the low current microprocessor outputs to switch higher currents and voltages. With the optocouplers it fully isolates the live side of the relays from your microprocessor, this will require a seperate 5V supply to power the relays.
Trigger voltage : 5VDC
Supply Voltage : 5VDC (only needed if using optoisolators)
A relay module with a built-in timer circuit that can be adjusted to determine how long the relay coil stays energised. The header pins on the PCB determine how the relay module operates (please see product images for diagram).
ESP01 WiFi relay module for Arduino and other microcontroller projects
This module allows you to control a SPDT (single pole, double throw) relay over WiFi. The ESP01 module (included) is compatible with many microcontrollers (inc. Arduino) and can also be used stand-alone.
Mercury tilt switch module for Arduino and other microcontroller projects
This module has a small glass bead with a ball of mercury in it that will either make or break a contact if it is tilted. It also has a surface mounted LED that can be connected to iluminate when the switch is activated.
This module generates ≈50% duty cycle square waves using the classic 555 timer IC. The frequency of the pulse can be adjusted using the built-in trimmer potentiometer (7Hz-14kHz).
Input Voltage: 5-12Vdc
Size: 29x12mm Output frequency (approx.): 7.2Hz - 14.4kHz
Percussion knock sensor module for Arduino and other microcontroller projects
This module is a switch that will detect being hit, it is not as sensitive as the vibration switch (KY-002) so can be used in projects that may be moving and an impact needs to be detected. This sensor acts like a switch that will "make" when the sensor is knocked.
Rotary encoder module for Arduino and other microcontroller projects
This module uses a 30 position rotary encoder with push switch.
The rotary encoder works by having 2 switches (A&B) for each position that are slightly offset, indicating the direction of rotation by detecting if "A" switches before or after "B".
Key switch module for Arduino and other microcontroller projects
This module has a small tactile switch that is normaly open and will close when pressed, it has a resistor connected in series with the switch so it can be used directly with a digital input on an Arduino when powered by 5VDC.
Tilt switch module for Arduino and other microcontroller projects
This module has a tilt switch that is normaly open and will close when the module tilts, it has a resistor connected in series with the switch so it can be used directly with a digital input on an Arduino when powered by 5VDC.
5V relay module for Arduino and other microcontroller projects
This module has 2 x 5V changover relays with the option of using them through optocouplers. There is an LED for each relay to indicate when it has been activated.
The relay allows the low current microprocessor outputs to switch higher currents and voltages. With the optocouplers it fully isolates the live side of the relays from your microprocessor, this will require a seperate 5V supply to power the relays.
Trigger voltage : 5VDC
Supply Voltage : 5VDC (only needed if using optoisolators)
Vibration switch module for Arduino and other microcontroller projects
This module is a switch that will detect small knocks and vibrations, it is more sensitive than the knock sensor (KY-031) so can be used in projects that need very slight movement to be detected. This switch will "make" when the module is moved.
