Changes for page GroPoint Air-M -- LoRaWAN Multi Segment Soil Sensor Converter User Manual

Last modified by Xiaoling on 2024/04/23 14:37

From version < 67.8 >

edited by Xiaoling
on 2022/06/25 10:48

To version < 68.5 >

edited by Xiaoling
on 2022/08/08 18:08

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@@ -9,6 +9,12 @@
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  **Table of Contents：**
  (% aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
@@ -54,6 +54,7 @@
  == 1.2  Features ==
++
  * LoRaWAN 1.0.3 Class A
  * Ultra-low power consumption
  * Supports GroPoint Profile
@@ -67,9 +67,9 @@
--
  == 1.3  Probe Specification ==
++
  (((
  GroPoint Air includes an M12 5-pin connector, the pins definition matches GroPoint Profile M12 version probes. Users can connect this connector to GroPoint Profile directly.
  )))
@@ -79,25 +79,29 @@
  )))
++
  == 1.4  Applications ==
++
  * Smart Agriculture
--
  == 1.5  Pin Mapping ==
++
  Inner PCB Pin mapping for reference:
  (% aria-label="image-20220530002453-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220530002453-3.png||data-widget="image" height="262" width="493"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++
  = 2.  Connect LoRaWAN Network =
  == 2.1  LED Indicator ==
++
  The GroPoint Air has an internal LED which can show the status of different states.
  * The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
@@ -106,10 +106,9 @@
--
--
  == 2.2  Firmware and Changelog ==
++
  (((
  Firmware Download Location: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/GroPoint_Air/firmware/>>https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/GroPoint_Air/firmware/]]
  )))
@@ -123,10 +123,12 @@
  )))
++
  = 3.  How to use? =
  == 3.1  Connect to GroPoint Profile ==
++
  (((
  GroPoint Air must be used with [[GroPoint Profile>>https://www.gropoint.com/products/soil-sensors/gropoint-profile]]. There are different interface model from GroPoint, users need to choose the one:
  )))
@@ -143,23 +143,40 @@
  )))
++
  == 3.2  Connect to LoRaWAN Network? ==
++
  Each GroPoint Air is shipped with a worldwide unique set of OTAA keys. To use GroPoint Air in a LoRaWAN network, user needs to input the OTAA keys in the LoRaWAN network server. So GroPoint Air can join the LoRaWAN network and start to transmit sensor data
++
  == 3.3  Example to use for LoRaWAN network ==
++
++(((
  This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Usages with other LoRaWAN IoT servers are similar.
++)))
--* In this use case, the GroPoint Air measures soil moisture and temperature and sends the status to the LoRaWAN server.The GroPoint Air will uplink different types of messages to the LoRaWAN server. See [[Uplink payload>>||anchor="H3.4A0UplinkPayloadAnalyze"]] for detail.
++* (((
++In this use case, the GroPoint Air measures soil moisture and temperature and sends the status to the LoRaWAN server.The GroPoint Air will uplink different types of messages to the LoRaWAN server. See [[Uplink payload>>||anchor="H3.4A0UplinkPayloadAnalyze"]] for detail.
++)))
++(((
  Assume the DLOS8 is already set to connect to the [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. We need to add the GroPoint Air device in TTN V3:
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++
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  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from GroPoint Air.
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++(((
  Each GroPoint Air is shipped with a sticker with the default device EUI as below:
++)))
  (% aria-label="1652944593868-618.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SW3L%20LoRaWAN%20Outdoor%20Flow%20Sensor/WebHome/1652944593868-618.png?rev=1.1||alt="1652944593868-618.png" data-widget="image"]](% title="Click and drag to resize" %)
@@ -181,9 +181,13 @@
  (% style="color:blue" %)**Step 2**(%%):  Power on GroPoint Air
--(% aria-label="image-20220519094347-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SW3L%20LoRaWAN%20Outdoor%20Flow%20Sensor/WebHome/image-20220519094347-1.png?width=725&height=430&rev=1.1||alt="image-20220519094347-1.png" data-widget="image" height="430" width="725"]](% title="Click and drag to resize" %)
++(% aria-label="image-20220519094347-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SW3L%20LoRaWAN%20Outdoor%20Flow%20Sensor/WebHome/image-20220519094347-1.png?width=725&height=430&rev=1.1||alt="image-20220519094347-1.png" data-widget="image" height="430" width="725"]]
++(% title="Click and drag to resize" %)
++
++(((
  Put the jumper to power on GroPoint Air and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and the user can see it in the panel.
++)))
  (% aria-label="image-20220611174943-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220611174943-1.png||data-widget="image" height="139" width="1008"]](% title="Click and drag to resize" %)
@@ -200,26 +200,42 @@
  == 3.4  Uplink Payload Analyze ==
++
++(((
  Uplink payloads have two types:
++)))
  * (((
++(((
  Report temperature and humidity status normally: Use FPORT=2
  )))
++)))
  * (((
++(((
  Other control commands: Use other FPORT fields.
  )))
++)))
++(((
  The application server should parse the correct value based on FPORT settings.
++)))
++
  == 3.5  temperature and humidity Value, Uplink FPORT~=2 ==
++(((
  GroPoint Air will send this uplink after Device Status once join the LoRaWAN network successfully. And GroPoint Air will:
++)))
++(((
  periodically send this uplink every 20 minutes, this interval can be changed.
++)))
++(((
  The drawing below shows the probe dimensions of the 2-8 segment probes, Temperature sen sor locations provided in table below:
++)))
  (% aria-label="image-20220621093414-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220621093414-1.png||data-widget="image" height="932" width="816"]](% title="Click and drag to resize" %)
@@ -236,20 +236,34 @@
  (% aria-label="image-20220611174943-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220611174943-1.png||data-widget="image" height="139" width="1008"]](% title="Click and drag to resize" %)
++(((
  For US915 frequency, when DR=0 and the payload length exceeds 11, the DR of this packet is switched to 1.
++)))
++(((
  For AU915 frequency, when DR=2，Dwelltime=1 and the payload length exceeds 11, the DR of this packet is switched to 3.
++)))
++(((
  For AS923 frequency, when DR=2，Dwelltime=1 and the payload length exceeds 11, the DR of this packet is switched to 3.
++)))
++
  == 3.6  Show data on Datacake ==
++
++(((
  Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
++)))
++(((
  (% style="color:blue" %)**Step 1**(%%):  Link TTNv3 to Datacake [[https:~~/~~/docs.datacake.de/lorawan/lns/thethingsindustries#create-integration-on-tti>>url:https://docs.datacake.de/lorawan/lns/thethingsindustries#create-integration-on-tti]]
++)))
++(((
  (% style="color:blue" %)**Step 2**(%%):  Configure SW3L in Datacake
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  (% aria-label="image-20220613171007-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220613171007-1.png||data-widget="image" height="567" width="542"]](% title="Click and drag to resize" %)
@@ -275,38 +275,63 @@
  = 4.  Configure GroPoint Air via AT Command or LoRaWAN Downlink =
++
++(((
  Use can configure GroPoint Air via AT Command or LoRaWAN Downlink.
++)))
--* AT Command Connection: See [[FAQ>>url:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/#H6.FAQ]].
--* LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>url:http://8.211.40.43/xwiki/bin/view/Main/]]
++* (((
++AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
++)))
++* (((
++LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>url:http://8.211.40.43/xwiki/bin/view/Main/]]
++)))
++(((
  There are two kinds of commands to configure GroPoint Air, they are:
++)))
  * (((
++(((
  **~ (% style="color:#4472c4" %)General Commands(%%)**(% style="color:#4472c4" %).
  )))
++)))
++(((
  These commands are to configure:
++)))
--* General system settings like: uplink interval.
--* LoRaWAN protocol & radio-related command.
++* (((
++General system settings like: uplink interval.
++)))
++* (((
++LoRaWAN protocol & radio-related command.
++)))
++(((
  They are the same for all Dragino Device that support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>url:http://8.211.40.43/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
++)))
  * (((
++(((
  **~ (% style="color:#4472c4" %)Commands special design for GroPoint Air(%%)**
  )))
++)))
++(((
  These commands only valid for GroPoint Air, as below:
++)))
  == 4.1  Set Transmit Interval Time ==
++
  Feature: Change LoRaWAN End Node Transmit Interval.
++
  (% style="color:#037691" %)**AT Command: AT+TDC**
  (% aria-label="image-20220607171554-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/WebHome/image-20220607171554-8.png?rev=1.1||alt="image-20220607171554-8.png" data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -323,12 +323,12 @@
--
--
  == 4.2  Set Interrupt Mode ==
++
  Feature, Set Interrupt mode for GPIO_EXIT.
++
  (% style="color:#037691" %)**AT Command: AT+INTMOD**
  (% aria-label="image-20220607171716-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/WebHome/image-20220607171716-9.png?rev=1.1||alt="image-20220607171716-9.png" data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -345,17 +345,28 @@
--
--
  == 4.3  Set the sensor delay time ==
++
++(((
  Feature: Change the sensor delay time.
++
++)))
++
++(((
  There are six models of GroPoint Air, and each model returns a different number of temperature and humidity. The more bytes of the returned value, the longer the delay. The AT+SDELAY command can adjust the time that the sensor returns data to the node, and can adjust different delays according to different types of sensors.
++)))
++(((
  The default delay is 1000ms.
++
++)))
++
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  (% style="color:#037691" %)**AT Command: AT+SDELAY**
++)))
  (% aria-label="image-20220613175511-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220613175511-8.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -371,19 +371,22 @@
--
--
  == 4.4  Query sensor model function ==
++
  Feature: Using this function will re-update the model.
++
  (% style="color:#037691" %)**Downlink Command: 0xFA00**
++
  == 4.5  Get Firmware Version Info ==
++
  Feature: use downlink to get firmware version.
++
  (% style="color:#037691" %)**Downlink Command: 0x26**
  (% aria-label="image-20220607171917-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/WebHome/image-20220607171917-10.png?rev=1.1||alt="image-20220607171917-10.png" data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -454,8 +454,10 @@
  = 5.  Use AT Command =
++
  == 5.1  Access AT Commands ==
++
  GroPoint Air supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to GroPoint Air for using AT command, as below.
  (% aria-label="1654593668970-604.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:Main.User Manual for LoRaWAN End Nodes.LLMS01-LoRaWAN Leaf Moisture Sensor User Manual.WebHome@1654593668970-604.png||data-widget="image" height="297" width="474"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -469,7 +469,9 @@
  (% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
++(((
  In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for GroPoint Air. GroPoint Air will output system info once power on as below:
++)))
  (% aria-label="1654653659449-932.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:Main.User Manual for LoRaWAN End Nodes.LLMS01-LoRaWAN Leaf Moisture Sensor User Manual.WebHome@1654653659449-932.png||data-widget="image" height="471" width="674"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -476,13 +476,19 @@
  Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureGroPointAirviaATCommandorLoRaWANDownlink"]].
++
  = 6.  Battery & How to replace =
  == 6.1  Battery Type ==
++
++(((
  GroPoint Air is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is an un-rechargeable battery with a low discharge rate targeting more than 5 years use. This type of battery is commonly used in IoT targets for long-term running, such as water meters.
++)))
++(((
  The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
++)))
  (% aria-label="1654593587246-335.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/WebHome/1654593587246-335.png?rev=1.1||alt="1654593587246-335.png" data-widget="image" height="408" width="574"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -492,29 +492,47 @@
  GroPoint Air:  2.45v ~~ 3.6v
++
  == 6.2  Power Consumption Analyze ==
++
++(((
  Dragino Battery-powered products are all runs in Low Power mode. We have an updated battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit intervals.
++)))
++(((
  Instruction to use as below:
++)))
++(((
  (% style="color:blue" %)**Step 1**(%%):  Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[https:~~/~~/www.dragino.com/downloads/index.pHp?dir=LoRa_End_Node/Battery_Analyze/>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/Battery_Analyze/]]
++)))
++(((
  (% style="color:blue" %)**Step 2**(%%):  Open it and choose
++)))
  * (((
++(((
  Product Model
  )))
++)))
  * (((
++(((
  Uplink Interval
  )))
++)))
  * (((
++(((
  Working Mode
  )))
++)))
++(((
  And the Life expectation in different cases will be shown on the right.
++)))
  (% aria-label="1654593605679-189.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/WebHome/1654593605679-189.png?rev=1.1||alt="1654593605679-189.png" data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
@@ -533,19 +533,23 @@
  (% aria-label="image-20220607172042-11.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLMS01-LoRaWAN%20Leaf%20Moisture%20Sensor%20User%20Manual/WebHome/image-20220607172042-11.png?rev=1.1||alt="image-20220607172042-11.png" data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++
  === 6.2.1  Battery Note ===
++
  The Li-SICO battery is designed for small current / long period applications. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period to transmit LoRa, then the battery life may be decreased.
++
  === 6.2.2  Replace the battery ===
++
  (((
  You can change the battery in GroPoint Air. The type of battery is not limited as long as the output is between 3v to 3.6v.
  )))
  (((
--The default battery pack of GroPoint Air includes a ER26500 plus supercapacitor. If users can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most cases. The SPC can enlarge the battery life for high-frequency use (update period below 5 minutes).
++The default battery pack of GroPoint Air includes a ER26500 plus supercapacitor. If users can't find this pack locally, they can find ER26500 or equivalence, which will also work in most cases. The SPC can enlarge the battery life for high-frequency use (update period below 5 minutes).
  )))
@@ -552,26 +552,35 @@
  = 7.  FAQ =
++
  == 7.1  How to change the LoRa Frequency Bands/Region ==
++
  You can follow the instruction here: [[how to upgrade image>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome||anchor="H2.HardwareUpgradeMethodSupportList"]].
  When downloading the images, choose the required image file for download.
++
  = 8.  Trouble Shooting =
++
  == 8.1  AT Commands input doesn't work ==
--In case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while pressing the send key, user need to add ENTER in their string.
++In case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while pressing the send key, user need to add ENTER in their string.
++
++
  == 8.2  Why i see the payload is 7FFF? ==
++
  The device will judge the length of the data received by the serial port. If the length of the received data is 0, it means that there is a problem with the sensor communication or the sensor is not connected properly, it is invalid data, and the uploaded data is 7FFF.
++
  = 9.  Order Info =
++
  Part Number: (% style="color:blue" %)**GROPOINT AIR-M-XX**
  (% style="color:blue" %)**XX**(%%): The default frequency band
@@ -589,15 +589,18 @@
--
--
  = 10.  Packing Info =
++
++(((
  **Package Includes:  **
++)))
  * GroPoint Air-M x 1
++(((
  **Dimension and weight:**
++)))
  * Device Size: cm
  * Device Weight: g

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