Using LoRa for P2P half-duplex long range communication
Channel: Sayanee Basu
Date: 2019-11-22

#lora #arduino #duplex
We will use 2 LoRa modules to create a duplex communication across the long-range. This setup can be used as a GPS tracker or to send simple sensor data real-time between 2 nodes where cellular connectivity is weak or low power is required.

⏰ TIMESTAMPS
0:00 Intro
1:06 LoRa vs LoRaWAN
1:22 Hardware setup   
2:49 Setting up 2 nodes  
5:29 Loop function to send and receive messages   
8:53 Receive message function
11:04 Data exchange between 2 nodes

‣ Some links below are affiliate. I receive a small commission at no extra cost to you.

📻 PRODUCTS MENTIONED
Adafruit RFM95W LoRa Radio Transceiver Breakout https://amzn.to/3mF1Qq8

🎩 DEMO FILES
https://hutscape.com/tutorials/lora-duplex-a
https://hutscape.com/tutorials/lora-duplex-b

🔗 LINKS SHOWN
Adafruit RFM95W LoRa Radio Transceiver Breakout - 868 or 915 MHz - RadioFruit https://www.adafruit.com/product/3072
Adafruit RFM69HCW and RFM9X LoRa Packet Radio Breakouts tutorial https://learn.adafruit.com/adafruit-rfm69hcw-and-rfm96-rfm95-rfm98-lora-packet-padio-breakouts
arduino-LoRa by Sandeep Mistry https://github.com/sandeepmistry/arduino-lora
arduino-LoRa example with duplex communication https://github.com/sandeepmistry/arduino-LoRa/tree/master/examples/LoRaDuplex
Arduino millis() https://www.arduino.cc/en/pmwiki.php?n=Reference/millis
Arduino random() https://www.arduino.cc/reference/en/language/functions/random-numbers/random/
LoRa Module VS nRF24 VS Generic RF Module || Range & Power Test by Great Scotts https://www.youtube.com/watch?v=nP6YuwNVoPU
ESP32 and ESP8266 point-to-point (ESP-Now): Fast and efficient. Comparison with LoRa by Andreas Spiess https://www.youtube.com/watch?v=6NsBN42B80Q

🔌 HARDWARE LAB EQUIPMENT
EEVBlog Digital Multimeter 121GW https://www.eevblog.com/product/121gw/
Saleae Logic Analyzer https://amzn.to/3n47Jxh
ATTEN-862D Hot Air Gun workstation https://s.click.aliexpress.com/e/_A7zoa8

💻 SOFTWARE USED
dotfiles for terminal configuration https://github.com/sayanee/dotfiles
KiCad https://kicad.org/
CoolTerm for serial monitor https://freeware.the-meiers.org/
PartsBox for inventory management https://partsbox.com/
GoodNotes for highlighting datasheets https://www.goodnotes.com/

📹 VIDEO PRODUCTION GEAR
iPhone 7S Plus for recording video
Microphone Audio Technica ATR2100-USB for voice recording https://amzn.to/3gsOiwA
IKEA TERTIAL Work lamp stand hacked as a microphone stand https://amzn.to/2QJWnCx
Tripod SLIK SDV-10iPhone holder Xiletu XJ-8 https://s.click.aliexpress.com/e/_AVrL8v

🎬 VIDEO EDITING SOFTWARE TOOLS
Davinci Resolve for video editing
QuickTime for recording screencasts
Canva.com for YouTube thumbnail, titles, outro https://www.canva.com/