# LMIC **URL:** https://www.thethingsnetwork.org/forum/c/nodes/lmic/75.md?page=1 [Latest](https://www.thethingsnetwork.org/forum/latest.md) · [Categories](https://www.thethingsnetwork.org/forum/categories.md) · [Tags](https://www.thethingsnetwork.org/forum/tags.md) **Page:** 2 --- ## [Heltec LMIC-node battery powered](https://www.thethingsnetwork.org/forum/t/heltec-lmic-node-battery-powered/65350)
**Author:** [@grizzlyalleyne](https://www.thethingsnetwork.org/forum/u/grizzlyalleyne)\ **Replies:** 10\ **Last updated:** [December 8, 2023, 10:14pm UTC](https://www.thethingsnetwork.org/forum/t/heltec-lmic-node-battery-powered/65350 "2023-12-08T22:14:56Z")
Project: LMIC-node example meant to send a current geophone reading as well as the current GPS location to my Things Network application. I am using the Heltec Lora32 V2 board with a GPS module and a 16-bit ADC (ADS111… --- ## ["Successfully scheduled join accept for transmission" doesn't appear in console](https://www.thethingsnetwork.org/forum/t/successfully-scheduled-join-accept-for-transmission-doesnt-appear-in-console/65821)
**Author:** [@drz](https://www.thethingsnetwork.org/forum/u/drz)\ **Replies:** 20\ **Last updated:** [December 7, 2023, 1:04am UTC](https://www.thethingsnetwork.org/forum/t/successfully-scheduled-join-accept-for-transmission-doesnt-appear-in-console/65821 "2023-12-07T01:04:18Z")
Hello everybody, I am new to the Things Network. We have a problem in the following situation: For our custom board we use an ATmega328PB as Lora node controller. → ATmega328PB → rmf95W module → library: mcci-cat… --- ## [Improve RSSI and SNR on node](https://www.thethingsnetwork.org/forum/t/improve-rssi-and-snr-on-node/65647)
**Author:** [@geologic](https://www.thethingsnetwork.org/forum/u/geologic)\ **Replies:** 14\ **Last updated:** [December 4, 2023, 8:43pm UTC](https://www.thethingsnetwork.org/forum/t/improve-rssi-and-snr-on-node/65647 "2023-12-04T20:43:40Z")
Hi all I made a sensor node using STM32 and arduino-LMIC library and i’ve successfully send data to TTN using public gateways. I moved my sensor to a remote area covered only by a gateway 1km from my sensor. My sensor … --- ## [Heltec wireless tracker](https://www.thethingsnetwork.org/forum/t/heltec-wireless-tracker/65385)
**Author:** [@brugk000](https://www.thethingsnetwork.org/forum/u/brugk000)\ **Replies:** 8\ **Last updated:** [November 4, 2023, 11:02am UTC](https://www.thethingsnetwork.org/forum/t/heltec-wireless-tracker/65385 "2023-11-04T11:02:46Z")
I am trying to connect to TTN with the Heltec wireless tracker, but I cant find all the DIO pins. I found DIO1 on pin 14, but I need DIO0 to. Can somebody pass me the information to the right place to look. Thanks --- ## [After Callback not received, it is no more possible to send](https://www.thethingsnetwork.org/forum/t/after-callback-not-received-it-is-no-more-possible-to-send/65143)
**Author:** [@HeinzFischer](https://www.thethingsnetwork.org/forum/u/HeinzFischer)\ **Replies:** 4\ **Last updated:** [October 12, 2023, 8:10pm UTC](https://www.thethingsnetwork.org/forum/t/after-callback-not-received-it-is-no-more-possible-to-send/65143 "2023-10-12T20:10:19Z")
Hello My problem is not that it doesn’t receive the callback but that you can’t send after that. I have the problem that after sending out a message with: if (LMIC.opmode & OP\_TXRXPEND) { Serial2.print… --- ## [Mikrotik no JoinAccept](https://www.thethingsnetwork.org/forum/t/mikrotik-no-joinaccept/65059)
**Author:** [@geologic](https://www.thethingsnetwork.org/forum/u/geologic)\ **Replies:** 10\ **Last updated:** [October 12, 2023, 11:27am UTC](https://www.thethingsnetwork.org/forum/t/mikrotik-no-joinaccept/65059 "2023-10-12T11:27:45Z")
Hi all I made a sensor node using STM32 and LMIC library and i’ve sucessfully send data to TTN using public gateways. Now i moved my sensor to a area covered by a Mikrotik KNOT RL8 gateway. I do not have access to the g… --- ## [OTAA Join-request says MIC mismatch but decoded MIC match](https://www.thethingsnetwork.org/forum/t/otaa-join-request-says-mic-mismatch-but-decoded-mic-match/65123)
**Author:** [@SteveRan](https://www.thethingsnetwork.org/forum/u/SteveRan)\ **Replies:** 3\ **Last updated:** [October 10, 2023, 9:42pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-join-request-says-mic-mismatch-but-decoded-mic-match/65123 "2023-10-10T21:42:25Z")
Now Solved I have a device that I’m trying to onbard to TTN - the device works successfully on Helium - so I thought it would just be a matter of changing the keys and away it would go on TTN. No such luck. The device … --- ## [How to bring data out of downlink](https://www.thethingsnetwork.org/forum/t/how-to-bring-data-out-of-downlink/65019)
**Author:** [@jordan17](https://www.thethingsnetwork.org/forum/u/jordan17)\ **Replies:** 6\ **Last updated:** [October 9, 2023, 9:35am UTC](https://www.thethingsnetwork.org/forum/t/how-to-bring-data-out-of-downlink/65019 "2023-10-09T09:35:12Z")
Hello, I’m a beginner with LoRa, I don’t know if it’s possible, but I want to bring out the data I send to my Lora Node with MQTT in variable on arduino to allow to control a relay depends on the data received. I can add… --- ## [Decoded payload not showing in gateway's Live Data](https://www.thethingsnetwork.org/forum/t/decoded-payload-not-showing-in-gateways-live-data/65040)
**Author:** [@benkergh](https://www.thethingsnetwork.org/forum/u/benkergh)\ **Replies:** 2\ **Last updated:** [October 4, 2023, 3:03pm UTC](https://www.thethingsnetwork.org/forum/t/decoded-payload-not-showing-in-gateways-live-data/65040 "2023-10-04T15:03:32Z")
Hi, I have made a script with which I am sending a CayenneLPP payload from a device to a gateway. This works, so I see the CayenneLPP format in the Live Data of my device, showing as decoded\_payload. See example below … --- ## [Dfrobot Firebeetle + LoRa Cover + TTN](https://www.thethingsnetwork.org/forum/t/dfrobot-firebeetle-lora-cover-ttn/21089)
**Author:** [@everhamme](https://www.thethingsnetwork.org/forum/u/everhamme)\ **Replies:** 10\ **Last updated:** [October 2, 2023, 4:29am UTC](https://www.thethingsnetwork.org/forum/t/dfrobot-firebeetle-lora-cover-ttn/21089 "2023-10-02T04:29:34Z")
Im not the best code developer… but I’d really love to get a dfrobot firebeetle + LoRa cover working with TTN. I’ve setup my Sparkfun esp32 + LoRa example just fine… using their LMIC hello world example but can’t figure… --- ## [I want to fix the frequency](https://www.thethingsnetwork.org/forum/t/i-want-to-fix-the-frequency/64541)
**Author:** [@parkchanyeong](https://www.thethingsnetwork.org/forum/u/parkchanyeong)\ **Replies:** 5\ **Last updated:** [August 31, 2023, 8:52am UTC](https://www.thethingsnetwork.org/forum/t/i-want-to-fix-the-frequency/64541 "2023-08-31T08:52:56Z")
I’m using RAK2245 and Feather M0 with LoRa. How can I set a fixed frequency in the following code? I’ve tried using the disableChannel() method, and I’ve also tried using LMIC.freq = 922100000 . #include \ #inclu… --- ## [LMIC crashes on compile - Arduino Nano 33 Sense Rev2 and Adafruit RFM9x](https://www.thethingsnetwork.org/forum/t/lmic-crashes-on-compile-arduino-nano-33-sense-rev2-and-adafruit-rfm9x/64461)
**Author:** [@hominahomina](https://www.thethingsnetwork.org/forum/u/hominahomina)\ **Replies:** 4\ **Last updated:** [August 25, 2023, 3:33pm UTC](https://www.thethingsnetwork.org/forum/t/lmic-crashes-on-compile-arduino-nano-33-sense-rev2-and-adafruit-rfm9x/64461 "2023-08-25T15:33:11Z")
I wired up the adafruit rfm9x to the Arduino Nano 33 BLE Ver2 with the wiring pictured. I tried to use the MCCI LoRaWAN LMIC library with the example script ttn-otaa.ino. My only modifications to the code were the APPEUI… --- ## [Adafruit M0 with LoRa, data is not transmitted periodically](https://www.thethingsnetwork.org/forum/t/adafruit-m0-with-lora-data-is-not-transmitted-periodically/64241)
**Author:** [@parkchanyeong](https://www.thethingsnetwork.org/forum/u/parkchanyeong)\ **Replies:** 6\ **Last updated:** [August 8, 2023, 8:02am UTC](https://www.thethingsnetwork.org/forum/t/adafruit-m0-with-lora-data-is-not-transmitted-periodically/64241 "2023-08-08T08:02:42Z")
My code is as below. I wrote the code for sending data every five minutes, but the COMPLETE code didn’t come up at all Is there a problem with my code? #include \ #include \ #include \ #inclu… --- ## [Problem receiving confirmation from gateway](https://www.thethingsnetwork.org/forum/t/problem-receiving-confirmation-from-gateway/64155)
**Author:** [@juanezete](https://www.thethingsnetwork.org/forum/u/juanezete)\ **Replies:** 5\ **Last updated:** [August 1, 2023, 12:00pm UTC](https://www.thethingsnetwork.org/forum/t/problem-receiving-confirmation-from-gateway/64155 "2023-08-01T12:00:14Z")
Hi everyone, I’m having some trouble receiving donwlink to my node after processing the gateway, I don’t know if something is wrong in my code: /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*… --- ## [LMICPP-Arduino - LMIC library with SX1262 support](https://www.thethingsnetwork.org/forum/t/lmicpp-arduino-lmic-library-with-sx1262-support/41018)
**Author:** [@bluejedi](https://www.thethingsnetwork.org/forum/u/bluejedi)\ **Replies:** 8\ **Last updated:** [July 28, 2023, 7:54pm UTC](https://www.thethingsnetwork.org/forum/t/lmicpp-arduino-lmic-library-with-sx1262-support/41018 "2023-07-28T19:54:07Z")
Hi @grazy, I just noticed your addition of the LMICPP-Arduino library to the Overview of LoRaWAN Libraries topic. I have some questions that I will post here in this new topic (because they are off-topic for Overview o… --- ## [Feather M0 SF does not change using LMIC](https://www.thethingsnetwork.org/forum/t/feather-m0-sf-does-not-change-using-lmic/64048)
**Author:** [@raginig2](https://www.thethingsnetwork.org/forum/u/raginig2)\ **Replies:** 4\ **Last updated:** [July 26, 2023, 8:56am UTC](https://www.thethingsnetwork.org/forum/t/feather-m0-sf-does-not-change-using-lmic/64048 "2023-07-26T08:56:46Z")
Hi, I have developed a networked system using a Feather M0 microcontroller (RF915) communicating over LoraWAN with some locally deployed LoraWAN gateways (uses RAK gateway module with raspberry pi 3+). I can transmit an… --- ## [LMIC-node JSON payload](https://www.thethingsnetwork.org/forum/t/lmic-node-json-payload/63998)
**Author:** [@grizzlyalleyne](https://www.thethingsnetwork.org/forum/u/grizzlyalleyne)\ **Replies:** 6\ **Last updated:** [July 19, 2023, 3:52pm UTC](https://www.thethingsnetwork.org/forum/t/lmic-node-json-payload/63998 "2023-07-19T15:52:17Z")
I am using the LMIC-node example for a node I created. Everything was going smoothly sensing bytes down. I decided I wanted to send downlink in JSON format. I am using the ArduinoJson library in Platform IO to parse the … --- ## [Join MIC mismatch adafruit 32u4](https://www.thethingsnetwork.org/forum/t/join-mic-mismatch-adafruit-32u4/63874)
**Author:** [@clv](https://www.thethingsnetwork.org/forum/u/clv)\ **Replies:** 1\ **Last updated:** [July 10, 2023, 10:30pm UTC](https://www.thethingsnetwork.org/forum/t/join-mic-mismatch-adafruit-32u4/63874 "2023-07-10T22:30:41Z")
Hello. I am not sure if this is a TTN problem or LMIC. (I suppose it’s LMIC) but I wanted some opinions before i make a bug report to github. TTN refuses the Join MIC of LMIC (MIC mismatch), but accepts that of SlimLoRa… --- ## [Sending random values to TTN from my STM MCU](https://www.thethingsnetwork.org/forum/t/sending-random-values-to-ttn-from-my-stm-mcu/63696)
**Author:** [@juann\_18](https://www.thethingsnetwork.org/forum/u/juann_18)\ **Replies:** 4\ **Last updated:** [June 30, 2023, 7:10pm UTC](https://www.thethingsnetwork.org/forum/t/sending-random-values-to-ttn-from-my-stm-mcu/63696 "2023-06-30T19:10:48Z")
Hello everyone, I am developing an application using I-CUBE-LRWAN1 and a set of my own sensors to read humidity and ambient temperature, together with a ground humidity sensor. What I would like is to send these two va… --- ## [Arduino Pro Mini RFM95 pinmap problem](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-pinmap-problem/35443)
**Author:** [@Catnip](https://www.thethingsnetwork.org/forum/u/Catnip)\ **Replies:** 60\ **Last updated:** [June 6, 2023, 7:41pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-pinmap-problem/35443 "2023-06-06T19:41:28Z")
Hi all, I’m trying to build a LoRa node based on the Arduino Pro Mini (ATmega328P 3.3V), an RMF95, and the MCCI LoRaWAN LMIC Library. Basically, I’m following this tutorial. I haven’t gotten it to work however, and I t… --- ## [Sending sensor data to TTN](https://www.thethingsnetwork.org/forum/t/sending-sensor-data-to-ttn/63115)
**Author:** [@thanhviet1801](https://www.thethingsnetwork.org/forum/u/thanhviet1801)\ **Replies:** 0\ **Last updated:** [May 20, 2023, 4:25am UTC](https://www.thethingsnetwork.org/forum/t/sending-sensor-data-to-ttn/63115 "2023-05-20T04:25:25Z")
Hello everyone, I am a noob. I am doing a first project using stm32f4 to communicate with mpu6050 and GPS, arduino Uno to communicate with sx1276 lora (I have successfully connected to the gateway and sent hello, word to… --- ## [Data recived](https://www.thethingsnetwork.org/forum/t/data-recived/62962)
**Author:** [@mahgoubmmahdi](https://www.thethingsnetwork.org/forum/u/mahgoubmmahdi)\ **Replies:** 4\ **Last updated:** [May 12, 2023, 4:51am UTC](https://www.thethingsnetwork.org/forum/t/data-recived/62962 "2023-05-12T04:51:24Z")
When viewing the uplink\_message, we are seeing the end device payload encoded in the following formats: ‘frm\_payload’: ‘RACxUAAA’ or ‘4460B1500000’. We have attempted to decode the payload using CayeneLPP, but it was not… --- ## [End Device not Working, Although Other Codes Work On Hardware](https://www.thethingsnetwork.org/forum/t/end-device-not-working-although-other-codes-work-on-hardware/62904)
**Author:** [@Rvan8](https://www.thethingsnetwork.org/forum/u/Rvan8)\ **Replies:** 2\ **Last updated:** [May 9, 2023, 6:12am UTC](https://www.thethingsnetwork.org/forum/t/end-device-not-working-although-other-codes-work-on-hardware/62904 "2023-05-09T06:12:54Z")
Hi. When programming my end node, there is no connection taking place or activity registered on the application end devices, although the device is within range to the gateway (same room). When I use the same code, and … --- ## [Trouble running SX1276 on Arduino](https://www.thethingsnetwork.org/forum/t/trouble-running-sx1276-on-arduino/62756)
**Author:** [@wallytestacc](https://www.thethingsnetwork.org/forum/u/wallytestacc)\ **Replies:** 6\ **Last updated:** [May 8, 2023, 10:00pm UTC](https://www.thethingsnetwork.org/forum/t/trouble-running-sx1276-on-arduino/62756 "2023-05-08T22:00:25Z")
Hi, I know that a lot of people have opened similar topics with similar problems but I’m very desperate at this point and none of the solutions helped me. So I have my SX1276 connected to my Arduino Nano, I have triple … --- ## [Limit adr on lmic to not use SF11 and SF12](https://www.thethingsnetwork.org/forum/t/limit-adr-on-lmic-to-not-use-sf11-and-sf12/62570)
**Author:** [@andonoc](https://www.thethingsnetwork.org/forum/u/andonoc)\ **Replies:** 27\ **Last updated:** [April 19, 2023, 9:51pm UTC](https://www.thethingsnetwork.org/forum/t/limit-adr-on-lmic-to-not-use-sf11-and-sf12/62570 "2023-04-19T21:51:35Z")
After some testing i noticed that the ADR is setting the spreading factor on some nodes to SF11 and SF12. Is there a way to stop the lmic’s ADR on SF10 because otherwise there is always a chance to exceed the fair use po… --- ## [Sometime, disconnect between Esp32 and gateway by use LMIC.h](https://www.thethingsnetwork.org/forum/t/sometime-disconnect-between-esp32-and-gateway-by-use-lmic-h/62240)
**Author:** [@saratwadee](https://www.thethingsnetwork.org/forum/u/saratwadee)\ **Replies:** 5\ **Last updated:** [April 5, 2023, 6:24am UTC](https://www.thethingsnetwork.org/forum/t/sometime-disconnect-between-esp32-and-gateway-by-use-lmic-h/62240 "2023-04-05T06:24:26Z")
Hi everyone. I have problem about sometime disconnect between esp32 and gateway by use LMIC.h. Now, i cannot solve the problem. can we recommend me or explain this problem what cause? and how to solve? I need to explai… --- ## [How to use Helium miner as a gateway ? is it possibole](https://www.thethingsnetwork.org/forum/t/how-to-use-helium-miner-as-a-gateway-is-it-possibole/53158)
**Author:** [@Pik76](https://www.thethingsnetwork.org/forum/u/Pik76)\ **Replies:** 20\ **Last updated:** [March 29, 2023, 6:35pm UTC](https://www.thethingsnetwork.org/forum/t/how-to-use-helium-miner-as-a-gateway-is-it-possibole/53158 "2023-03-29T18:35:20Z")
Hi guys , can I use Rak miner as a gataway ? to transmit node signal ? or do i need to setup gatawey? I bought lht65 but unfortunately the is no gateway in my town. I use RAK hotspot v2 , but sensor is offline even whe… --- ## [TxPower SX1276 register](https://www.thethingsnetwork.org/forum/t/txpower-sx1276-register/61611)
**Author:** [@Smartcore](https://www.thethingsnetwork.org/forum/u/Smartcore)\ **Replies:** 2\ **Last updated:** [February 24, 2023, 7:54am UTC](https://www.thethingsnetwork.org/forum/t/txpower-sx1276-register/61611 "2023-02-24T07:54:51Z")
Hi team About the TXPOWER fuction of LOM204A (AT, API, CLI), in theory will right to a SX1276 register that set the tx power. RegPaConfig…looks Power amplifier identidy writeReg(RegPaConfig, (u1\_t)(0x80|(pw - 2))); T… --- ## [Deep Sleep with LMIC LIbrary](https://www.thethingsnetwork.org/forum/t/deep-sleep-with-lmic-library/61118)
**Author:** [@dl8dbn](https://www.thethingsnetwork.org/forum/u/dl8dbn)\ **Replies:** 12\ **Last updated:** [February 1, 2023, 4:36pm UTC](https://www.thethingsnetwork.org/forum/t/deep-sleep-with-lmic-library/61118 "2023-02-01T16:36:04Z")
Hello everyone, I have built a LoraWan sensor that sends its data to TTN. The base is a LilyGo/TTGO. As sensor I use a BME280. The software is compiled with the Arduino IDE. The software is based on the library LMIC. Wh… --- ## [Esp32 + Things Indoor Gateway](https://www.thethingsnetwork.org/forum/t/esp32-things-indoor-gateway/61173)
**Author:** [@paracetamol](https://www.thethingsnetwork.org/forum/u/paracetamol)\ **Replies:** 12\ **Last updated:** [January 27, 2023, 3:57pm UTC](https://www.thethingsnetwork.org/forum/t/esp32-things-indoor-gateway/61173 "2023-01-27T15:57:00Z")
"Hello, I am a newbee :wink: ! I have the following setup: Things Indoor Gateway ESP32 with LMIC with library 4.11 I receive frames well on the gateway but never in the application. I had previously started with an… [Previous page](https://www.thethingsnetwork.org/forum/c/nodes/lmic/75.md) [Next page](https://www.thethingsnetwork.org/forum/c/nodes/lmic/75.md?page=2)