# Arduino pro mini RFM95 node problems **URL:** \ **Category:** LMIC\ **Created:** [May 12, 2018, 9:21am UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140 "2018-05-12T09:21:36Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![mitkot](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/mitkot/32/45927_2.png) [@mitkot](https://www.thethingsnetwork.org/forum/u/mitkot)\ **Post date:** [May 12, 2018, 9:21am UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/1 "2018-05-12T09:21:37Z")
Hello, I am experiencing some problems with Arduino pro mini 3.3V/8MHZ + RFM95 node and LMIC library. I am trying ttn-otaa example in LMIC library.I have created and application and have registered one device. I am receiving the following output from arduino console: Starting Packet queued 374: EV\_JOINING 633691: EV\_JOINED 765209: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 4646746: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 8528453: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 12410009: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 16291573: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 20173145: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 24054709: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued and so on… On the TTN console I can see the packets coming into GW. Also in Applications console in Device Overview I can see Frames up coming and counting. But in Data Tab there is nothing…no payload. The device is sending “Hello world!”. What can be the problem. This is my first experiment with Lora GW& node. Thanks for helping me. ---
**Author:** ![mitkot](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/mitkot/32/45927_2.png) [@mitkot](https://www.thethingsnetwork.org/forum/u/mitkot)\ **Post date:** [May 12, 2018, 9:29am UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/2 "2018-05-12T09:29:50Z")
I can see thus in GW traffic. ![%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/a/a2454aa4b7708ed40bdf35ffa6c1de06fdc8ab48.png) And I see this in application: ![%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/b/b047641f506e91dbf7660b65393a209a774187ea.png) and no data: ![%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/3/3da11cabc99aca473a49033a83a8de4303ff72ba.png) ---
**Author:** ![BoRRoZ](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/borroz/32/44234_2.png) [@BoRRoZ](https://www.thethingsnetwork.org/forum/u/BoRRoZ)\ **Post date:** [May 12, 2018, 1:04pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/3 "2018-05-12T13:04:53Z")
try reset frame counters in device overview in console and then start node again and before you do… open the browser window with the application (and leave it open) you should see the joining of the node - what design did you make (and what sketch you use ?) ---
**Author:** ![mitkot](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/mitkot/32/45927_2.png) [@mitkot](https://www.thethingsnetwork.org/forum/u/mitkot)\ **Post date:** [May 12, 2018, 1:31pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/4 "2018-05-12T13:31:02Z")
Thank you BoRRoZ I already tried to reset frame counters and it dosen’t help. I am using design with Arduino pro mini 3.3V/8MHZ (Chineese one) + RFM95 with the following wiring: nss = 10, .rxtx = LMIC\_UNUSED\_PIN, .rst = 0, .dio = {7, 8, 9}, I am using the ttn-otaa example sketch provided with LMIC library. I also put LMIC\_setClockError(MAX\_CLOCK\_ERROR \* 1 / 100); in my setup, but it dosen’t help. ---
**Author:** ![BoRRoZ](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/borroz/32/44234_2.png) [@BoRRoZ](https://www.thethingsnetwork.org/forum/u/BoRRoZ)\ **Post date:** [May 12, 2018, 1:39pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/5 "2018-05-12T13:39:32Z")
what gateway do you use ? ---
**Author:** ![mitkot](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/mitkot/32/45927_2.png) [@mitkot](https://www.thethingsnetwork.org/forum/u/mitkot)\ **Post date:** [May 12, 2018, 1:42pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/6 "2018-05-12T13:42:30Z")
RAK831+Rpi3 ---
**Author:** ![BoRRoZ](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/borroz/32/44234_2.png) [@BoRRoZ](https://www.thethingsnetwork.org/forum/u/BoRRoZ)\ **Post date:** [May 12, 2018, 2:02pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/7 "2018-05-12T14:02:33Z")
ok 8 channel and working I assume 🕶 back to the node - you have add the node to that application ’ promini\_nd’ - you sure you’ve used the [right keys](https://www.thethingsnetwork.org/forum/t/no-join-response-from-ttn/10469), I don’t see the ‘yellow thunder’ in your gateway traffic screenshot ---
**Author:** ![mitkot](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/mitkot/32/45927_2.png) [@mitkot](https://www.thethingsnetwork.org/forum/u/mitkot)\ **Post date:** [May 12, 2018, 3:36pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/8 "2018-05-12T15:36:29Z")
Hello, I did not test the GW with other nodes…so it is not 100% sure that works…but we can assume so… I am using right keys —you can see: ![%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/1/10d66ee2e39bc78b7bb1e94176cf4c5b678eee34.png) Yes I have added the node to the application. I am afraid of this messages from Arduino console: Starting Packet queued 454: EV\_JOINING 652922: EV\_JOINED 785575: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 4668256: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued 8551103: EV\_TXCOMPLETE (includes waiting for RX windows) Packet queued… Is that mean that is not send? ---
**Author:** ![BoRRoZ](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/borroz/32/44234_2.png) [@BoRRoZ](https://www.thethingsnetwork.org/forum/u/BoRRoZ)\ **Post date:** [May 12, 2018, 3:50pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/9 "2018-05-12T15:50:13Z")
> [@mitkot](#): > > Arduino pro mini 3.3V/8MHZ + RFM95 if I look [here](http://noc.thethingsnetwork.org:8085/api/v2/gateways/eui-b827ebfffed708d0) you’re gateway is working so there could be several reasons the node is not working - wrong keys (I don’t see the yelow join request symbol) - wrong wiring … which one did you build ? sometimes deleting the node and deleting the application and start over registering the application and registering and adding the node again, helps… don’t ask me why but I’ve seen it 🕶 _can you upload a picture off the node_ ---
**Author:** ![mitkot](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/mitkot/32/45927_2.png) [@mitkot](https://www.thethingsnetwork.org/forum/u/mitkot)\ **Post date:** [May 12, 2018, 4:25pm UTC](https://www.thethingsnetwork.org/forum/t/arduino-pro-mini-rfm95-node-problems/14140/10 "2018-05-12T16:25:05Z")
Yes! I deleted the application and device and it works now! Thank you BoRRoZ ! ![%D0%B8%D0%B7%D0%BE%D0%B1%D1%80%D0%B0%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/7/7ed4ec4bdeb34224ee30d6a25e4921329bd9dd28.png)