Build Instructions

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• 1

  Intro

  Hey, what's up, guys? Akarsh here from CETech.

  In this article today we are going to learn about the RFM LoRa modules made by HopeRF.

  We will be seeing what are the features that the RFM module has to offer, its pinout, comparison between the different RFM modules available in the market like RFM95 96 97 and RFM98.

  We will also compare the RFM98 with other famous LoRa module available in the market like the Ra-02 made by Ai-Thinker or the RYLR896 by Reyax.

  The RFM module is very popular due to the cheap price and availability in different frequency bands, unlike the Ra-02. Due to this, you will find the RFM module in various LoRa based products like nodes or even gateways.

  I've made a tutorial video on this, I recommend you check it out.

• 2

  Order your parts for the project from LCSC

  Check out LCSC to buy genuine electronic components for your project (Sign up today and get $8 off on your first order): HERE

  BUY the parts as shown in the article/video:

  1) RFM98: LCSC link

  2) Ra-02: LCSC link

  3) Ra-01: LCSC link

  4) ESP32: LCSC link

• 3

  About the RFM Module From HopeRF

  The RFM LoRa modules are SPI based LoRa modules.

  They have 16 pins with a pitch of 2mm. They have the exact same physical footprint and pin spacing as the famous ESP8266 ESP12 module. Hence you can use the same SMD to through hole adapter with both the modules to break out the pins for use with a breadboard or a standard protoboard.

  You can find the detailed specs in the datasheet: https://cdn.sparkfun.com/assets/learn_tutorials/8...

  If you want to use the RFM module with an Arduino or esp based board you can use this library from adafruit:

  GitHub Library: https://github.com/akarsh98/RadioHead

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