Under/Over Voltage and Current Protection Switch – High Current
https://www.electronics-lab.com/project/under-over-voltage-and-current-protection-switch-high-current/
LTC6102 Protection: UV/OV/UC/OC switch for loads up to 30A/48V. Arduino-ready for V/I sensing via ADC.
Comparator Relay Board using LMV331
https://www.electronics-lab.com/project/comparator-relay-board-using-lmv331/
This versatile comparator relay board serves as a flexible switching solution for applications ranging from environmental sensing like light and temperature control to critical circuit protection against voltage and current fluctuations.
Under/Over Voltage and Current Protection Switch
https://www.electronics-lab.com/project/under-over-voltage-and-current-protection-switch/
This simple project allows users to design an under-voltage, over-voltage, under-current, and over-current protection switch. It is a highly useful system for safeguarding electrical loads against abnormal power or current conditions. The project features a relay with optocoupler input, a current-sensing circuit based on the INA195 amplifier, a 10mΩ shunt resistor, and a voltage divider […]
Arduino Bluetooth Relay Switch
https://www.electronics-lab.com/project/arduino-bluetooth-relay-switch/
This Bluetooth Relay Switch enables users to control lights, fans, or other devices using a Bluetooth app on an Android device. The device can be controlled using a simple app. The project consists of an Arduino-compatible microcontroller (ATMEGA328), a 5V relay, a relay driver BJT, and an optocoupler, which provides isolation between the relay and […]
One Channel RF Remote Relay Switch
https://www.electronics-lab.com/project/one-channel-rf-remote-relay-switch/
The project described here is one Channel RF remote receiver Relay board. The project is built using LICAL-EDC-DS001 chip from LINX. The board consists of Encoder/Decoder chip, 433Mhz RF Receiver module, 10 x jumpers to set the address, a Relay to drive the output, U2 5V regulator, header connector for data outputs for controlling external […]
Solenoid, Relay, Valve Driver with Current Regulation
https://www.electronics-lab.com/project/solenoid-relay-valve-driver-with-current-regulation/
The project presented here is a PWM current driver for solenoids, Relays, and valves. The board will regulate the current with a well-controlled waveform to activate and reduce power dissipation at the same time. The solenoid current is ramped up fast to ensure the opening of the valve or relay. After the initial ramping, the […]
Single Channel PS3 Wireless Remote ON/OFF Switch
https://www.electronics-lab.com/project/single-channel-ps3-wireless-remote-on-off-switch/
The board presented here is multipurpose hardware which includes the ESP32-Wroom module, 3.3V regulator, 5V relay, Power LED, Relay LED, and connector to program the ESP-32 Module. The project requires 5VDC and consumes 60mA current when the relay is ON. The project can be used in IoT applications and the relay can be controlled using […]
RC Radio Controlled Switch with Relay
https://www.electronics-lab.com/project/rc-radio-controlled-switch-with-relay/
This RC Relay project enables control of large current devices using a Radio Control (RC) System. This RC switch converts hobby radio control (RC) pulses to control the on/off state of the Relay. On board LED indicates the output. The board is Arduino compatible and the example code can be modified as per user requirements. […]
2 Channel Smart Dual Coil Latching Relay Board – 2 Channel Bistable Relay Module
https://www.electronics-lab.com/project/2-channel-smart-dual-coil-latching-relay-board-2-channel-bistable-relay-module/
This is a Smart Dual Coil Latching Relay that can control the ON/OFF power of a device by applying a short voltage pulse to Input 1 and Input 2. This project is helpful in low-power applications since the coil is not powered all the time, it only requires a short voltage pulse. Relay Coil also […]
Over Current Trip Switch – Over Current Shutdown Relay
https://www.electronics-lab.com/project/over-current-trip-switch-over-current-shutdown-relay/
The project presented here is an over-current trip switch. It provides protection to a load when over current condition occurs. Basically, the project trips the relay when there is a short circuit or the load starts drawing much current. When the condition is favorable, press the tactile switch to power the load again. The threshold […]