Last Updated on 19. July 2026 by Suffocation
I bought these LoRa boards in a pack of two some time ago and forgot about them in a drawer. With more and more reports on LoRa (Long Range Radio) appearing, I wanted to try it out too. I've documented my attempts here.
Es gibt mittlerweile eine Version 2 des Boards. Die Version 2 hat zusätzlich einen AN-Schalter. Hieran kann man die beiden Version ganz gut unterscheiden.
Facts
- ESP32
- Display SSD1306
- LoRa Chip SX1276
- 2 Buttons – Reset and Prog
- Antennen-Anschluss für LoRa Antennen
- Just 2x 1.5 mm Lipo connector
- Charging LED red.
- Micro USB CP2100x
- Metall Antenne für WiFi
- Fits on breadboard (1 row free on each side)
SX1276 LoRa Chip
| Spanish | SX1276 |
| GPIO 19 | Miso |
| GPIO 27 | MOSI |
| GPIO 5 | SCK |
| GPIO 18 | Computer Science |
| GPIO 26 | IRQ |
| GPIO 14 | RST |
SSD1306 OLED Display
The I2C address is 0x3C.
| Spanish | Display |
|---|---|
| GPIO 4 | Seventh-day Adventist |
| GPIO 15 | SCL |
| GPIO 16 | RST |
Areas of application
- Remote maintenance
- Sensor nodes
Views
Programming
Libraries
SSD11306
Graphics library
https://github.com/ThingPulse/esp8266-oled-ssd1306
SX1276
Lora by Sandeep Mistry
https://github.com/sandeepmistry/arduino-LoRa
Test programme
TTGO liefert ein paar Beispiele, unteranderem einen Sender und einen Empfänger. Die beiden folgenden Programme sind Modifikationen davon.
Sender
‚); document.write(‚
‚);
Empfänger
That's how it looks
Problems
Currently none
Miscellaneous
...
Conclusion
Ein nettes Einsteigerkit. Die Informationenen war etwas schwer zu finden aber es gibt andere Seiten, als die des Herstellers, die gute Tips geben. Die Verbindung per Lora ist problemlos. Tests bezüglich der Reichweite und Stabilität habe ich nicht durchgeführt.
Quellen- und Linkverzeichnis
- Download des Projektes mit DownGit
- Link zu Git
- https://github.com/sandeepmistry/arduino-LoRa
- https://github.com/ThingPulse/esp8266-oled-ssd1306
Bildnachweise & Medienquellen
| Date | Change | Author |
|---|---|---|
| 25.01.2021 | Post created | Suffocation |
I can only report good things about the range of the TTGO LoRa V2 boards with 433MHz. At least my boards run in the TinyGS project as LoRa sat trackers, and there I've had confirmed reception contacts with the LoRa sat RS52SE at a distance of 2200km with the supplied rubber duck antenna and indoors. However, the sat had a transmit power of 1W and was heard at RSSI -132dBm with -17.8dB S/N. The various sats are regularly received well at distances of 500 – 1500km.
Information on the project at Tinygs.com.
Hello,
I ordered a LoRa32 board from Dschunke7 (so a return is rather problematic).
Unfortunately, the small OLED display isn't working.
Given that the boards have become extremely expensive in the last quarter, here's my question:
Can the display be easily replaced? Can a larger one be soldered on? Swap the hardware and that's it (plug and play?)?
Best regards
Hello,
I've already swapped displays, so it is possible. You need to make sure the pins are the same and the resolution is correct. I've also soldered on an I2C display where none was previously present; you can then determine the size yourself.
Hello
Stefan
Hello again...
Hoping to increase the range, I bought two new antennas on eBay. The success was non-existent, so I won't even link them here…
Out of boredom, I read this report again and was taken aback: the photos show an RSSI of -117.
At range, it should definitely be more (at -120, it should stop?!) and so I wondered why it still worked and installed the demo cited here. The values were just as awful.
The error was quickly found: the modules are the 868 MHz version. They therefore must be used with
LoRa.begin(868E6)
initiated. And lo and behold, suddenly you have RSSI values of -30 over the short distance.
Sounds good?! But it's still not enough to reach from inside to the door 🙁
If one were to increase the transmission power now
LoRa.setTxPower(20, PA_OUTPUT_PA_BOOST_PIN);
After Lora.Begin
Will the RSSI get any larger?.
Unfortunately, I don't have any measuring equipment (or the know-how) to figure out why the range is so rubbish and whether it's a system error or a problem with my hardware…
Stefan: Perhaps you fancy grabbing a power bank and taking the receiver outside sometime?!
Hello Lars,
I naturally wanted to, but didn't have the time. Today it worked out. After I set up the software for the two nodes, I let my children run around the park with the box. Unfortunately, I don't have such clear line-of-sight here. But I did get over 200m. I switched the frequency to 868. I'm not sure if the chip can do them all (according to the datasheet), but the antenna definitely can't. I ordered a measuring device for antennas but never received it…. . We stopped at around 500 meters. There were some trees in between and no line of sight. Packets were received. Depending on the position, however, there were interferences. Regards Stefan ... More on the project setup may follow 😉
Hello Stefan and fellow readers,
Thank you very much for the effort! You're making me jealous! 500m wasn't possible for me at all, and there wasn't even anything in the way..
I probably need more modules to see if one of mine is faulty, but somehow I've lost the desire for now (?)…
Would you perhaps like to adjust the sketch to the correct frequency?
Best regards,
Lars
I also have the parts (Version 1) lying around. Unfortunately, they were never used because the range between them was something like 200m 🙁 (clear line of sight). That might be enough for one or two applications, but unfortunately not for mine (transmitting a few bytes per day) from a location without internet to a location with internet access. Not to mention, to an access point of „The Things Network“.
I'm currently doing this with GSM and would like to replace it...