However, there are cheaper ways. If your receiving circuit requires more current/power, you may want to consider a different solution. Your recently viewed items and featured recommendations
Without this level of isolation, the lower voltage signals will not trigger input on the PLC, and the high voltage signals coming from the PLC will break circuitry in the Raspberry Pi. Arduino Connector is a software that enables communication between you Raspberry Pi and Arduino Create via the cloud. The Raspberry Pi has only 8 GPIO’s, so it would be really useful to have additional Inputs and outputs by combining the Raspberry Pi and Arduino. Notes The circuit above is a two chanel relay switch using opto-couplers. The relays are 5 Volt making this compatible with Arduino and Raspberry Pi. For the Arduino, things would be really simple: you would merely connect the "top" of the transistor to one of the Arduino's inputs, the bottom to the Arduino's ground, and turn on the internal pull up resistor on the Arduino's input. Most conventional resistors are rated for 1/4 Watt, so be careful that your power (voltage times current through resistor) does not exceed .25-- otherwise, your resistor will get very hot, and may potentially fail.To build the circuit, you'll want your signal source to lead to the resistor, resistor to pin 1, then pin 2 to signal ground. Free shipping for many products!

I use this circuit to pass signals between my PLC and Raspberry Pi, but cannot use it to power components of my project (like solenoids).

Crimping Tool Kit, Preciva Dupont Ratcheting Crimper Plier Set with 1550PCS 2.54mm Dupont Connectors and 460pcs 2.54mm JST-XH Connectors for AWG 26-18(0.1-1mm²)KeeYees 60pcs 5mm Pitch 2 Pin & 3 Pin PCB Mount Screw Terminal Block Connector for Arduino (50 x 2 Pin, 10 x 3 Pin)22 AWG Silicone Hook Up Wire - 22 Gauge Stranded Tinned Copper Wire with Silicone Insulation, 6 Colors (Black, Red, Yellow, Green, Blue, White) 23ft / 7m Each, Hook Up Wire Kit from PlusivoWayinTop Connector Crimping Tool Kit Crimper Plier 2.54mm Header Male Female Crimp Pins Terminals Housing 1 2 3 4 5 6 8 10 Pin and 40pin 1.27mm Ribbon Cable FC/IDC Jumper Wire 1M (Crimping Set)MCIGICM 10pcs Male Header Pin, 40 Pin Header Strip (2.54 mm) for Arduino ConnectorKEYESTUDIO TDS Meter Probe Water Quality Monitoring V1 Sensor Module with XH2.54-3Pin Jumper Wire Connector for ArduinoHJ Garden 620pcs 2.54mm Dupont Jumper Connectors Male Female Crimp Pin Terminal Kit 250V 3A 1-12Pin Dupont Cable Jumper Wire Pin Header Housing KitPoiLee 60pcs 5mm Pitch KF301-2P 3P Pin PCB Mount Screw Terminal Block Connector for Arduino 300V 15A (40 x 2 Pin, 20 x 3 Pin)MCIGICM 620Pcs 2.54mm Pitch SM Housing Connector Male Female Crimp Pins Adaptor Assortment jst Connector kitQibaok Crimping Tool Kit Ratcheting Crimper with 1550PCS 2.54mm Dupont Connectors and 760pcs 2.54mm JST-XH Connectors for AWG 26-20(0.1-0.5mm²)Crimping Tool Kit, Dupont Ratcheting Crimper Plier Set with 1550PCS 2.54mm Dupont 1 2 3 4 5 6 8 Pin Housing Connectors Male Female Crimp Pins Adaptor for AWG 24-18(0.25-1mm²)Jabinco 30 Pcs 40 pin Breakable Pin Header 2.54mm Single Row Male Header Connector Kit PCB Pin Strip for ArduinoKABUDA 360 Pcs Multicolored Dupont Wire 40 Pin Male to Female x 3, 40 Pin Male to Male x 3, 40 Pin Female to Female x 3, Breadboard Jumper Wires Ribbon Cables Kit for Arduino (360 Wires)SamIdea 40pcs in Box 2.54mm Breakaway PCB Board 40 Pin Male and Female Pin Header Socket Connector Kit for Arduino Prototype Shield,4 KindsHaitronic 310pcs 2.54mm Male Female 1/2/3/4/5/6/8pin Dupont Wire Jumper pin Header sockets Connector Housing KitELEGOO UNO Project Super Starter Kit with Tutorial and UNO R3 Compatible with Arduino IDE Your recently viewed items and featured recommendations Find many great new & used options and get the best deals for 2 Channel Relay Module Relay Opto-Couplers For Arduino Raspberry XKS at the best online prices at eBay! In my examples, I use the Raspberry Pi, which uses 3.3V DC signals, and a PLC (Programmable Logic Controller) operating at higher voltages (often 24V DC). The output is isolated via changeover relay contacts. You should now be able to pass an electrically isolated signal from the left side of the chip to the circuit on the right side.Some final considerations: there is a collector current limitation with the optocoupler, in general, not allowing more than 50 mA to flow. Once the set up is complete, just perform a reboot (Optional).

This circuit should eventually connect to ground; the chip acts as a switch between pins 5 and 4. Add Tip Ask Question Comment Download. Et c'est là que l'arduino intervient : et si l'on connectait le récepteur 433Mhz à un arduino, qui s'occuperait de le gérer, et qui ne préviendrait le Raspberry qu'en cas de réception de signal, via le port USB ! REXQualis 120pcs Breadboard Jumper Wires 20cm Length Dupont Wire Kit 40pin Male to Female, 40pin Male to Male, 40pin Female to Female for Arduino/DIY/Raspberry Pi 2 3 4.8 out of 5 stars 259 $5.99 $ 5 . Using Ohm's Law, choose a resistor value to place between your signal source and pin 2.