# RAK811 No response to input commands **URL:** \ **Category:** End Devices (Nodes)\ **Created:** [April 13, 2018, 12:17am UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411 "2018-04-13T00:17:11Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![woollettg](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/woollettg/32/35697_2.png) [@woollettg](https://www.thethingsnetwork.org/forum/u/woollettg)\ **Post date:** [April 13, 2018, 12:17am UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411/1 "2018-04-13T00:17:11Z")
I have this module mounted on a breakout board bought from AliExpress. I have it connected to a linux pc via a ch341 usb to 3.3v uart converter. I’m using minicom, 115200,8,1,N. When I apply power I get “Welcome to RAK811”. When I try to enter AT commands there is no echo and no response from the 811. I have tried adding CR & LF in the minicom options to no avail. I can even reflash its firmware using the ST flashing tool so that says that my connections are OK. This should be simple, what am I missing? ---
**Author:** ![cultsdotelecomatgmai](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/cultsdotelecomatgmai/32/35697_2.png) [@cultsdotelecomatgmai](https://www.thethingsnetwork.org/forum/u/cultsdotelecomatgmai)\ **Post date:** [April 13, 2018, 8:18am UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411/2 "2018-04-13T08:18:51Z")
Hi, try using linux picocom with local echo and terminate with control chars… $ picocom -b 115200 --echo /dev/ttyXXXX … … … enter AT commands and terminate each AT command with ctrl-j … I have not used RAK811 but have experienced same issue with other modules. ctrl-m might also work. ---
**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:** [April 13, 2018, 8:46am UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411/3 "2018-04-13T08:46:45Z")
maybe a level problem ? the Rx/Tx lines should be 3V3 this a my (unsorted) browserfolder 811 dump 😉 - [https://create.arduino.cc/projecthub/naresh-krish/integrate-node-red-with-rak811-lora-node-using-the-ttn-c4564a](https://create.arduino.cc/projecthub/naresh-krish/integrate-node-red-with-rak811-lora-node-using-the-ttn-c4564a) - [https://github.com/RAKWireless/RAK811-AT-Command/tree/master/Application%20Notes](https://github.com/RAKWireless/RAK811-AT-Command/tree/master/Application%20Notes) - [https://github.com/RAKWireless/RAK811-AT-Command/blob/master/Arduino/RAK811/RAK811.h](https://github.com/RAKWireless/RAK811-AT-Command/blob/master/Arduino/RAK811/RAK811.h) - [https://github.com/RAKWireless/RAK811-AT-Command/tree/master/Arduino/RAK811/examples](https://github.com/RAKWireless/RAK811-AT-Command/tree/master/Arduino/RAK811/examples) - [RAK811 Lora Module Connecting to TTN](https://www.thethingsnetwork.org/forum/t/rak811-lora-module-connecting-to-ttn/6805/5) - [https://github.com/RAKWireless/RAK811-AT-Command/blob/master/Software%20Development/RAK811 LoRa AT Command V1.3.pdf](https://github.com/RAKWireless/RAK811-AT-Command/blob/master/Software%20Development/RAK811%C2%A0LoRa%C2%A0AT%C2%A0Command%C2%A0V1.3.pdf) - [https://github.com/RAKWireless/RAK811-AT-Command](https://github.com/RAKWireless/RAK811-AT-Command) - [https://www.hackster.io/naresh-krish/using-the-rak811-lora-module-with-arduino-a38de8](https://www.hackster.io/naresh-krish/using-the-rak811-lora-module-with-arduino-a38de8) - [https://create.arduino.cc/projecthub/naresh-krish/getting-started-with-the-rak811-lora-node-67f157](https://create.arduino.cc/projecthub/naresh-krish/getting-started-with-the-rak811-lora-node-67f157) - [https://www.hackster.io/naresh-krish/using-the-rak-811-lora-node-with-android-things-13f7df](https://www.hackster.io/naresh-krish/using-the-rak-811-lora-node-with-android-things-13f7df) ---
**Author:** ![woollettg](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/woollettg/32/35697_2.png) [@woollettg](https://www.thethingsnetwork.org/forum/u/woollettg)\ **Post date:** [April 13, 2018, 9:14am UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411/4 "2018-04-13T09:14:49Z")
Despite telling minicom to add crlf it didn’t make the difference. I hacked up a perl script to make sure crlf was sent. It answers now. Thanks for the links. ---
**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:** [April 13, 2018, 6:14pm UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411/6 "2018-04-13T18:14:27Z")
![difference](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/2/2ab6edfeeb9f829ef6578b492d08cfd3583f4633.jpg) _difference between 811 and 811-N series_ first I updated my rak811-N with firmware V2022 ![x781](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/7/77f85b3d2b9a6f63acda98567f0e5c50f9d79a35.jpg) info and tool\> [http://www.rakwireless.com/en/download/RAK811-N/Firmware%20upgrade](http://www.rakwireless.com/en/download/RAK811-N/Firmware%20upgrade) _that went smooth, just be carefull you select the right bin file_ ![update811n](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/0/0b08779196f90b87c1cdaadb5472a17a363d99c0.jpg) _after updating connected to usb-serial sending some AT commands_ ![rak811Nterminal](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/f/faf69b42e1262b6d8710fe389289c6b08ab41603.jpg) to make testing (behaviour) more easy I’m programming 'function buttons and writing some _testscripts_ the results can be used to write an arduino sketch , _or other mcu_, later to control this module ![811ntestbuttons](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/a/a7262400de107880c14c544ef67d2241ac8dbe45.jpg) ![rak811buttons](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/0/093c955f84d5b21bad4992558932acfc109c0835.jpg) ---
**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:** [April 14, 2018, 9:59am UTC](https://www.thethingsnetwork.org/forum/t/rak811-no-response-to-input-commands/13411/7 "2018-04-14T09:59:07Z")
sleepmode RAK 811 N **at+sleep** ![x781](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/e/ef2c52048a8f228264a4cb41b0f833436c3693f8.jpg) _firmware V2022_ ![x782](https://www.thethingsnetwork.org/forum/uploads/default/original/2X/2/2a95d5bf60c645e523a35bf0fd3b408d5426476f.jpg) _firmware [V20226](http://support.rakwireless.com/uploads/files/1515664011095-rak811n_debug_v20226_otw.zip) (dev)_🕶