This combination (or similar) can be used.
The Wemos D1 module (same as the above) will work withe the Dragino Rev 1.3 module (I did not look at the other versions).
The following is the pin mapping, jumper configuration and wire link required for use with the LMIC library
// Wemos D1 (Rev 1) pin mapping and jumper settings for use with Dragino Lora Shield Rev 1.3
// Lora Shield - install jumpers SV1-1 to SV1-2, SV2-1 to SV2-2, SV3-1 to SV3-2
// Lora Shield - remove jumpers J_D101, J_D102, J_D105
// Add link from J_D101 pin closest to the aerial connector to D3 on the Arduino header
lmic_pinmap pins = {
.nss = 15, // CS
.rxtx = 4, // For placeholder only, Do not connected on RFM92/RFM95
.rst = 2, // Needed on RFM92/RFM95? (probably not) D0/GPIO16
.dio = {16, 5, 4}, // Specify pin numbers for DIO0, 1, 2
};
Are you going to add an SMA connector for an antenna? In that case maybe an edge mount one?
Are you going to mount the radio and the ESP module back to back on the PCB? Remember to ground everything properly, and add enough capacitors to the 3.3V. Also add enough via’s to connect the ground pours. I had issues with a previous design where the microcontroller reset when the radio transmitted. All due to bad grounding.
yes. The spirit of this dev is opensource.
Just need to finish the diagram to get sure.
I’m wondering about shortening the segment between antenna PIN and SMA connector to avoid antenna loss of power.
As I’m new to Lorawan GW, I wonder if it would be usefull to add a buzzer (alerting when WIFI is disconnected or when GW in TRX error) and if it would be usefull to have a small 128x64 oled display soldered on the PCB ( with a switch to reduce energy drain). I’m about to finish the PCB , making 2 extra option would be ok too
Do you think DIO1 and DIO0 could be moved to GPIO9 and GPIO10 , to free GPIO4 and GPIO5 for the OLED display ?
If mods are good, I will post the package on GitHub
Reading all above and since some time has passed with possibly new methods, what would be the best pinmapping for an RFM95 with a Nodemcu 1.0?
Can I just take any GPIO pins and assign them in the LMIC or does it not work that way?
/edit
To answer my own question:
See this post Node with ESP8266 and RFM95W
which refers to this page: http://things4u.github.io/HardwareGuide/ESP8266/ESP-Sensor/esp-lora-sensor.html
// Pin mapping
const lmic_pinmap lmic_pins = {
.nss = 15,
.rxtx = LMIC_UNUSED_PIN,
.rst = 16,
.dio = {5, 4, LMIC_UNUSED_PIN},
}
This is the setup that now works with my nocemcu.
I think the GPIO9 and GPIO10 are intended only for internal use of ESP8266, I had to use the GPIO4 and GPIO5 in my hat to Wemos D1-mini, as in your schematics. I´m using this same hardware for a LUA single-channel gateway or for a node
especially DIO pins pulled together with OR diode to GPIO15 not another one, this one has pull down resistor what we need (or leave them unconnected and use LMIC no DIO pin Pull Request
you can also leave SS pin of RFM95 tied to ground if you only have one SPI device
As you can see, there is some options, just need to choose the one you prefer
This WeMos D1 shield works fine with RFM95 + I2C, WS2812 Led and PushPutton (Radio Reset is not connected) checkout schematics
we try to use a RFM9x LORA radio with an ESP D1 mini .we have big problem with wiring the module . in the monitor we see that messages are normally send . but we don t have anything in the data console of ttn .
as you can see we have this in the monitor :
i think the problem is the " unknown event" that happened at each time .
for our pin mapping we do this ;
// Pin mapping
const lmic_pinmap lmic_pins = {
.nss = 15,
.rxtx = LMIC_UNUSED_PIN,
.rst = LMIC_UNUSED_PIN,
.dio = {4, 5, LMIC_UNUSED_PIN},
};
we do , but no sucess .
i think the wiring is different for our module because we don’t have just lora module but wa have something like this ;
do you tkink this type of module work same as the green card ?
what can be the unknown event ?
