{"id":103933,"date":"2021-05-05T11:24:29","date_gmt":"2021-05-05T11:24:29","guid":{"rendered":"https:\/\/www.snapwhole.com\/index.php\/ham-radio-digital-mode-frequencies-2\/"},"modified":"2023-01-17T01:05:10","modified_gmt":"2023-01-17T01:05:10","slug":"linking-arduino-system-with-433-315-mhz-rf-transeivers","status":"publish","type":"page","link":"https:\/\/www.snapwhole.com\/index.php\/linking-arduino-system-with-433-315-mhz-rf-transeivers\/","title":{"rendered":"Linking Arduino Systems with 433 \/ 315 Mhz RF Transceivers"},"content":{"rendered":"\n

Linking Arduino Systems with 433 \/ 315 Mhz RF Transceivers<\/strong><\/mark><\/p>\n\n\n\n

Return To Arduino Projects<\/a><\/d3><\/center>

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I wanted two Arduino systems to share data, but did not want to use Wi-fi, and I found these 433 Mhz and 315 Mhz RF Transmitters and Receivers that work with the Arduino<\/p>\n\n\n\n

The 433 Mhz transmitters and receivers are easy to setup and use<\/p>\n\n\n\n

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Arduino 433Mhz Transmitter and Receiver<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
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433 Mhz is used for many common remote control systems, and low power transmitter\/receiver are available from many manufacturers, and can be ordered from aliexpress.com for less that a dollar (and a 45 day delivery wait) – recently, 06\/27\/2022, the delivery times have improved to 15-30 days, strangely, the bigger the order, the faster the delivery times<\/p>\n\n\n\n

The Transmitters and Recievers are also available in 315 Mhz and are almost identical in cost and design to the 433 Mhz devices<\/p>\n\n\n\n

So I ordered 2 sets of each, for relatively cheap parts like this, I typically order a spare so a parts failure won\u2019t cost me an extra 45 day wait<\/p>\n\n\n\n

I purchased both the 433 and 315 Mhz systems, and they are almost identical, the transistor on the transmitter has the frequency labeled, the receivers are identical, so if you get them mixed up, trial and error is required to find which is what frequency!<\/p>\n\n\n\n

Wiring 433 and 315 Mhz Transceiver to an UNO and NANO<\/strong><\/p>\n\n\n\n

The 433 Mhz and 315 Mhz Transmitters and Recievers are wired the same<\/p>\n\n\n\n

Transmitter Wiring<\/strong><\/p>\n\n\n\n

Transmitter Pin       ->       UNO Pin\n5v                             5v\nSignal                         D10\nGnd                            GND<\/pre>\n\n\n\n
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Arduino 433 Board<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
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Antenna is connected to a solder pad on the receiver<\/p>\n\n\n\n
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Arduino 433Mhz Antenna Pad<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
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Receiver Wiring<\/strong><\/p>\n\n\n\n
Receiver Pin         ->        UNO Pin\n5v                             5v (VCC)\nSignal                         D2\nAntenna\nGnd                            GND<\/pre>\n\n\n\n
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Arduino 433 MHZ Receiver<\/figcaption><\/figure><\/div><\/div>\n\n\n\n
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Setting up the Drivers<\/h2>\n\n\n\n
There are many drivers available for the 433\/315Mhz transceivers, I chose the RCSwitch driver set, this driver set is setup to control wireless devices and sends three data points, which is useful for this application to send two data points, 1 is the payload, and 1 identifies the sending system\/data type<\/strong><\/p>\n\n\n\n
Data point         Length                 Intended Use\nPayload            defined by SIZE        Payload\nSIZE               length of Payload      defines what is payload\nn bits Protocol 1 byte Not used - set to 2<\/pre>\n\n\n\n
Code Framework for adding the drivers to your sketch<\/h2>\n\n\n\n
Receiver framework<\/h2>\n\n\n\n
#include <RCSwitch.h>\nRCSwitch mySwitch = RCSwitch();\n\nVoid setup()\n{\nmySwitch.enableReceive(0);  \/\/ Receiver on interrupt 0 => that is pin #2\n}\nVoid loop\n\nif (mySwitch.available())\n{\nint value = mySwitch.getReceivedValue();\nif (value == 0)\n{\nSerial.println(\"----error, invalid message\");\n{\nPayload = mySwitch.getReceivedValue();\nSize = mySwitch.getReceivedBitlength()\nProtocol = mySwitch.getReceivedProtocol()\n\/\/print payload to serial port for verification\nSerial.print(\"Payload received \");\nSerial.println(payload);\n\/\/----insert program actions on received data here\n}\nmySwitch.resetAvailable();<\/pre>\n\n\n\n
Transmitter Framework<\/h2>\n\n\n\n
#include <RCSwitch.h>\nRCSwitch mySwitch = RCSwitch();\n\nvoid setup() {\n\/\/ Transmitter is connected to Arduino Pin #10\nmySwitch.enableTransmit(10);\n}\n\nvoid loop() {\n\/*  using decimal code *\/\n\nmySwitch.send(5393, 24);\ndelay(1000);\n\nmySwitch.send(5396, 24);\ndelay(1000);\n\ndelay(20000);\n}<\/pre>\n\n\n\n
Linking Arduino Systems with 433 \/ 315 Mhz RF Transceivers<\/strong><\/mark><\/p>\n\n\n\n
Return To Arduino Projects<\/a><\/d3><\/center>

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Linking Arduino Systems with 433 \/ 315 Mhz RF Transceivers Return To Arduino Projects I wanted two Arduino systems to share data, but did not want to use Wi-fi, and I found these 433 Mhz and 315 Mhz RF Transmitters and Receivers that work with the Arduino The 433 Mhz transmitters and receivers are easy […]<\/p>\n
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