Usb Relay Controller Schematic

The relay in the circuit has a coil rated for 9 vdc and a switch rating of 10 a at 117 vac.

Usb relay controller schematic. Option jqc 3fc t73 relays supply voltage 12vdc option ras 12 15 relays supply voltage 12vdc. Free download usb relay board control software. The stm8s103 r421a08 r221a04 and r413d08 are relay boards that are controlled from your computer through the usb port. Power connector the power supply connector is shown on the image bellow.

Usb devices side figure 1. Usb 2 0 compliance use on chip usb driver control 1 stepping motor. The supply voltage is 12 vdc or 24vdc depending on the relay type selected during purchase. O 12v dc 600ma o 24v dc 400ma converter chipset.

Thus only 9 vdc passes through the handheld pushbutton. Ground is commined with the interface unit and the power supply. Usb eight relay board for automation user manual 04 aug 2017 7 6. Dtr and rts are rs232 signals from the interface unit.

Built in usb to serial conversion allows the module to be used without any usb specific knowledge. You can buy perforated pcb and solder your components onto it and connect with jumper wires. For example see the diagram below. Control any ac device via pc rs232 or usb step 1.

So here we go let s design this circuit. Mplab c18 for firmware at usb devices side. Here is a schematic diagram for a simple circuit that uses a 9 vdc circuit with a handheld pushbutton to turn a 120 vac lamp on and off. Usb relay controller circuit diagram.

Usb relay controller allows a pc to control a single external device using simple rs232 commands. Ease of use and wider operating system compatibility are the primary goals behind this product s design. Delphi 6 for pc host software. Vcc is provided by an external power supply suited to the relay voltage.

The relays allow you to control any 12 volt appliance such as led lights for example. By margaret byrd june 13 2020. Control devices using your pc. Usb connector type b power supply requirements selectable during purchase.

A usb to rs232 serial port interface gives you several controllable control lines that can drive relays. Usb 16 relay board virtual com port controlled user manual 04 aug 2017 3 1. If you wish to control mains 120 220 volt appliances you can install an additional 120 220 volt relay that is 12 volt activated. Pic controlled relay driver automatic usb power switch vk 1540 wiring diagram board fox delta pic18f2550 remote 16 channel module numato standby schematic circuit 10 step selector gsm control using smart.

Relay is fully powered from the usb bus. Numato lab s 4 channel usb relay module is a great product for controlling electrical and electronic devices remotely from a pc or mobile device over a usb link. Is the schematic for this example pic18f4550 is the main devices that communicate with pc and control stepping motor.