Hi Folks, I just received several RFM95 boards in the post today and I would like to use some of my WeMos D1 mini board (without wifi) as an arduino to control the device as a node. I have been studying the code at https://github.com/matthijskooijman/arduino-lmic . How should I be handling the wi…

[image] Node with ESP8266 and RFM95W Hardware I have ESP node running since yesterday based on Wemos D1-mini board and RFM95 (and the LoRa shield of Ideetron). It is based on a port of the LMIC-v1.5 source base with changes to hal.cpp and others for this architecture. git…

Thanks Arjan. I started reading this rather long thread before posting but found it was meandering a bit. Will take the time to review the thread in detail and see if I can pull out the bits of information I need. Thanks, Mark

I linked to a specific post in that thread. That post links to other information which eventually gets you to, for example: http://things4u.github.io/HardwareGuide/ESP8266/ESP-Sensor/esp-lora-sensor.html

You can see Wiring also here, with a dedicated shield for RFM95 [image] hallard/WeMos-Lora ESP8266 WeMos Shield for HopeRF RFM95 RFM96 RFM98 Lora module - hallard/WeMos-Lora Also a version of LMIC without DIO needed to be connected [image] hallard/a…

I got it working in the end. Two bits of key information: PIN Connections WeMos D1Mini -> RFP95 D8 (GPIO15) -> NSS D5 (GPIO14)->SCK D7 (GPIO13)->MOSI D6 (GPIO12)->MISO D1(GPIO5)->DIO 0 D2(GPIO4)->DIO 1 In the Arduino sketch, the lmic must be as follows. Note that the GPIO port number sho…

A couple of TTNers have asked me more about this build offline. Here is more detail on the BOM and configuration: The BOM for this configured as a node or a 1 channel gateway includes the following: WeMos D1 Mini ($3.00 see https://nl.aliexpress.com/item/D1-mini-Mini-NodeMcu-4M-bytes-Lua-WIFI…

If you want to keep thing simple and you can also use order this shield on PCBs.io (4 for $5.30) [image] Schematics and description here , depending on what you want to do, minimal wiring could be just RFM95 and 2 diodes.

Can it be bought with components already soldered? I mean resistances and capacitors, not the RFM92

In its most basic form you do not need all those components to make it work, just the RFM chip

Good to know it. Thanks. However, I’m wondering if someone would mass produce it. It would be a supercool shield to use out of the box with full functionality

How should I wire an RFM95 to an ESP8266/WeMos D1 mini?

End Devices (Nodes)

arjanvanb (Arjan) October 25, 2016, 8:54pm 2