Changes for page LMDS200 -- LoRaWAN Microwave Radar Distance Sensor User Manual

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Details

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Title

...	...	@@ -1,1 +1,1 @@
1		-LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
	1	+LDDS75 - LoRaWAN Distance Detection Sensor User Manual

Content

...	...	@@ -1,51 +1,41 @@
1	1	(% style="text-align:center" %)
2		-[[image:1655254599445-662.png]]
	2	+[[image:1654846127817-788.png]]
3	3
	4	+**Contents:**
4	4
5	5
6	6
7		-**Table of Contents:**
8	8
9	9
10	10
11	11
12	12
13		-
14		-
15		-
16	16	= 1.  Introduction =
17	17
18		-== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
	15	+== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
19	19
20	20	(((
21	21
22	22
23	23	(((
24		-(((
25	25	The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
26		-)))
27	27
28		-(((
	23	+
29	29	It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
30		-)))
31	31
32		-(((
	26	+
33	33	The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
34		-)))
35	35
36		-(((
	29	+
37	37	LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
38		-)))
39	39
40		-(((
	32	+
41	41	Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
42		-)))
43	43
44		-(((
45		-(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
	35	+
	36	+(% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors
46	46	)))
47	47	)))
48		-)))
49	49
50	50
51	51	[[image:1654847051249-359.png]]
...	...	@@ -74,11 +74,9 @@
74	74
75	75	[[image:image-20220610154839-1.png]]
76	76
77		-(((
78		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
	67	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
79	79
80		-**~ b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
81		-)))
	69	+**b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
82	82
83	83
84	84
...	...	@@ -91,10 +91,7 @@
91	91	[[image:1654852253176-749.png]]
92	92
93	93
94		-
95		-(((
96	96	**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
97		-)))
98	98
99	99
100	100	[[image:1654852175653-550.png]](% style="display:none" %) ** **
...	...	@@ -150,8 +150,6 @@
150	150	)))
151	151
152	152	(((
153		-
154		-
155	155	(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
156	156	)))
157	157
...	...	@@ -162,19 +162,11 @@
162	162	[[image:image-20220607170145-1.jpeg]]
163	163
164	164
165		-(((
166	166	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
167		-)))
168	168
169		-(((
170	170	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
171		-)))
172	172
173		-(((
174		-
175		-
176	176	**Add APP EUI in the application**
177		-)))
178	178
179	179	[[image:image-20220610161353-4.png]]
180	180
...	...	@@ -217,15 +217,11 @@
217	217	== 2.3  ​Uplink Payload ==
218	218
219	219	(((
220		-(((
221	221	LDDS75 will uplink payload via LoRaWAN with below payload format:
222		-)))
223	223
224		-(((
225	225	Uplink payload includes in total 4 bytes.
226	226	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
227	227	)))
228		-)))
229	229
230	230	(((
231	231
...	...	@@ -236,12 +236,12 @@
236	236	**Size (bytes)**
237	237	)))|=(% style="width: 62.5px;" %)**2**|=**2**|=1|=2|=**1**
238	238	|(% style="width:62.5px" %)**Value**|(% style="width:62.5px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
239		-[[Distance>>||anchor="H2.3.2A0Distance"]]
	210	+[[Distance>>||anchor="H2.3.3A0Distance"]]
240	240
241	241	(unit: mm)
242		-)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
243		-[[Temperature (Optional )>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
244		-)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
	213	+)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.4A0Distancesignalstrength"]]|(((
	214	+[[Temperature (Optional )>>||anchor="H2.3.5A0InterruptPin"]]
	215	+)))|[[Sensor Flag>>path:#Sensor_Flag]]
245	245
246	246	[[image:1654850511545-399.png]]
247	247
...	...	@@ -260,13 +260,9 @@
260	260
261	261	=== 2.3.2  Distance ===
262	262
263		-(((
264	264	Get the distance. Flat object range 280mm - 7500mm.
265		-)))
266	266
267		-(((
268	268	For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
269		-)))
270	270
271	271
272	272	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
...	...	@@ -275,7 +275,7 @@
275	275
276	276	=== 2.3.3  Interrupt Pin ===
277	277
278		-This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
	245	+This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.2A0SetInterruptMode"]] for the hardware and software set up.
279	279
280	280	**Example:**
281	281
...	...	@@ -301,18 +301,14 @@
301	301
302	302	=== 2.3.5  Sensor Flag ===
303	303
304		-(((
305	305	0x01: Detect Ultrasonic Sensor
306		-)))
307	307
308		-(((
309	309	0x00: No Ultrasonic Sensor
310		-)))
311	311
312	312
	276	+===
	277	+(% style="color:inherit; font-family:inherit" %)2.3.6  Decode payload in The Things Network(%%) ===
313	313
314		-=== 2.3.6  Decode payload in The Things Network ===
315		-
316	316	While using TTN network, you can add the payload format to decode the payload.
317	317
318	318
...	...	@@ -320,9 +320,7 @@
320	320
321	321	The payload decoder function for TTN V3 is here:
322	322
323		-(((
324	324	LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
325		-)))
326	326
327	327
328	328
...	...	@@ -852,17 +852,10 @@
852	852	== 2.8  ​Firmware Change Log ==
853	853
854	854
855		-(((
856	856	**Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
857		-)))
858	858
859		-(((
860		-
861		-)))
862	862
863		-(((
864	864	**Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
865		-)))
866	866
867	867
868	868
...	...	@@ -871,13 +871,11 @@
871	871
872	872	[[image:image-20220610172003-1.png]]
873	873
874		-
875	875	[[image:image-20220610172003-2.png]]
876	876
877	877
	831	+== 2.10  Battery Analysis ==
878	878
879		-== 2.10  Battery Analysis ==
880		-
881	881	=== 2.10.1  Battery Type ===
882	882
883	883	The LDDS75 battery is a combination of a 4000mAh or 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is non-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
...	...	@@ -886,7 +886,7 @@
886	886	The battery related documents as below:
887	887
888	888	* (((
889		-[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
	841	+[[ Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
890	890	)))
891	891	* (((
892	892	[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
...	...	@@ -902,7 +902,7 @@
902	902	=== 2.10.2  Replace the battery ===
903	903
904	904	(((
905		-You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.
	857	+You can change the battery in the LDDS75.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
906	906	)))
907	907
908	908	(((
...	...	@@ -910,12 +910,12 @@
910	910	)))
911	911
912	912	(((
913		-The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can't find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
	865	+The default battery pack of LDDS75 includes a ER18505 plus super capacitor. If user can’t find this pack locally, they can find ER18505 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
914	914	)))
915	915
916	916
917	917
918		-= 3.  Configure LDDS75 via AT Command or LoRaWAN Downlink =
	870	+= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
919	919
920	920	(((
921	921	(((
...	...	@@ -925,7 +925,7 @@
925	925
926	926	* (((
927	927	(((
928		-AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
	880	+AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
929	929	)))
930	930	)))
931	931	* (((
...	...	@@ -1006,9 +1006,7 @@
1006	1006	[[image:image-20220610172924-5.png]]
1007	1007
1008	1008
1009		-(((
1010	1010	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1011		-)))
1012	1012
1013	1013
1014	1014	[[image:image-20220610172924-6.png||height="601" width="860"]]
...	...	@@ -1024,6 +1024,8 @@
1024	1024	[[image:image-20220610173409-7.png]]
1025	1025
1026	1026
	977	+
	978	+
1027	1027	(((
1028	1028	(% style="color:#037691" %)**Downlink Command: 0x01**
1029	1029	)))
...	...	@@ -1032,106 +1032,293 @@
1032	1032	(((
1033	1033	Format: Command Code (0x01) followed by 3 bytes time value.
1034	1034
1035		-(((
1036	1036	If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1037		-)))
1038	1038
1039	1039	* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1040	1040	* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1041	1041	)))
	992	+
	993	+
	994	+
1042	1042	)))
1043	1043
	997	+== 3.3  Get Firmware Version Info ==
1044	1044
	999	+Feature: use downlink to get firmware version.
1045	1045
	1001	+(% style="color:#037691" %)**Downlink Command: 0x26**
1046	1046
	1003	+[[image:image-20220607171917-10.png]]
1047	1047
1048		-== 3.3  Set Interrupt Mode ==
	1005	+* Reply to the confirmation package: 26 01
	1006	+* Reply to non-confirmed packet: 26 00
1049	1049
1050		-Feature, Set Interrupt mode for GPIO_EXIT.
	1008	+Device will send an uplink after got this downlink command. With below payload:
1051	1051
1052		-(% style="color:#037691" %)**Downlink Command: AT+INTMOD**
	1010	+Configures info payload:
1053	1053
1054		-[[image:image-20220610174917-9.png]]
	1012	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	1013	+|=(((
	1014	+**Size(bytes)**
	1015	+)))|=**1**|=**1**|=**1**|=**1**|=**1**|=**5**|=**1**
	1016	+|**Value**|Software Type|(((
	1017	+Frequency
1055	1055
	1019	+Band
	1020	+)))|Sub-band|(((
	1021	+Firmware
1056	1056
1057		-(% style="color:#037691" %)**Downlink Command: 0x06**
	1023	+Version
	1024	+)))|Sensor Type|Reserve|(((
	1025	+[[Message Type>>||anchor="H2.3.7A0MessageType"]]
	1026	+Always 0x02
	1027	+)))
1058	1058
1059		-Format: Command Code (0x06) followed by 3 bytes.
	1029	+**Software Type**: Always 0x03 for LLDS12
1060	1060
	1031	+
	1032	+**Frequency Band**:
	1033	+
	1034	+*0x01: EU868
	1035	+
	1036	+*0x02: US915
	1037	+
	1038	+*0x03: IN865
	1039	+
	1040	+*0x04: AU915
	1041	+
	1042	+*0x05: KZ865
	1043	+
	1044	+*0x06: RU864
	1045	+
	1046	+*0x07: AS923
	1047	+
	1048	+*0x08: AS923-1
	1049	+
	1050	+*0x09: AS923-2
	1051	+
	1052	+*0xa0: AS923-3
	1053	+
	1054	+
	1055	+**Sub-Band**: value 0x00 ~~ 0x08
	1056	+
	1057	+
	1058	+**Firmware Version**: 0x0100, Means: v1.0.0 version
	1059	+
	1060	+
	1061	+**Sensor Type**:
	1062	+
	1063	+0x01: LSE01
	1064	+
	1065	+0x02: LDDS75
	1066	+
	1067	+0x03: LDDS20
	1068	+
	1069	+0x04: LLMS01
	1070	+
	1071	+0x05: LSPH01
	1072	+
	1073	+0x06: LSNPK01
	1074	+
	1075	+0x07: LLDS12
	1076	+
	1077	+
	1078	+
	1079	+= 5.  Battery & How to replace =
	1080	+
	1081	+== 5.1  Battery Type ==
	1082	+
1061	1061	(((
1062		-This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1084	+LLDS12 is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/Battery/ER26500/]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.
1063	1063	)))
1064	1064
1065		-* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1066		-* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	1087	+(((
	1088	+The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
	1089	+)))
1067	1067
	1091	+[[image:1654593587246-335.png]]
1068	1068
1069		-= 4.  FAQ =
1070	1070
1071		-== 4.1  What is the frequency plan for LDDS75? ==
	1094	+Minimum Working Voltage for the LLDS12:
1072	1072
1073		-LDDS75 use the same frequency as other Dragino products. User can see the detail from this link:  [[Introduction>>doc:Main.End Device Frequency Band.WebHome||anchor="H1.Introduction"]]
	1096	+LLDS12:  2.45v ~~ 3.6v
1074	1074
1075	1075
1076	1076
1077		-== 4.2  How to change the LoRa Frequency Bands/Region ==
	1100	+== 5.2  Replace Battery ==
1078	1078
1079		-You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
1080		-When downloading the images, choose the required image file for download. ​
	1102	+(((
	1103	+Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.
	1104	+)))
1081	1081
	1106	+(((
	1107	+And make sure the positive and negative pins match.
	1108	+)))
1082	1082
1083	1083
1084		-== 4.3  Can I use LDDS75 in condensation environment? ==
1085	1085
1086		-LDDS75 is not suitable to be used in condensation environment. Condensation on the LDDS75 probe will affect the reading and always got 0.
	1112	+== 5.3  Power Consumption Analyze ==
1087	1087
	1114	+(((
	1115	+Dragino Battery powered product are all runs in Low Power mode. We have an update 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 interval.
	1116	+)))
1088	1088
	1118	+(((
	1119	+Instruction to use as below:
	1120	+)))
1089	1089
1090		-= 5.  Trouble Shooting =
1091	1091
1092		-== 5.1  Why I can’t join TTN V3 in US915 / AU915 bands? ==
	1123	+**Step 1**: Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from:
1093	1093
1094		-It is due to channel mapping. Please see below link:  [[Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
	1125	+[[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/]]
1095	1095
1096	1096
1097		-== 5.2  AT Command input doesn't work ==
	1128	+**Step 2**: Open it and choose
1098	1098
	1130	+* Product Model
	1131	+* Uplink Interval
	1132	+* Working Mode
	1133	+
	1134	+And the Life expectation in difference case will be shown on the right.
	1135	+
	1136	+[[image:1654593605679-189.png]]
	1137	+
	1138	+
	1139	+The battery related documents as below:
	1140	+
	1141	+* (((
	1142	+[[Battery Dimension>>url:http://www.dragino.com/downloads/index.php?dir=datasheet/Battery/&file=LSN50-Battery-Dimension.pdf]],
	1143	+)))
	1144	+* (((
	1145	+[[Lithium-Thionyl Chloride Battery  datasheet>>url:https://www.dragino.com/downloads/downloads/datasheet/Battery/ER26500/ER26500_Datasheet-EN.pdf]],
	1146	+)))
	1147	+* (((
	1148	+[[Lithium-ion Battery-Capacitor datasheet>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC_1520_datasheet.jpg]], [[Tech Spec>>url:http://www.dragino.com/downloads/downloads/datasheet/Battery/SPC1520%20Technical%20Specification20171123.pdf]]
	1149	+)))
	1150	+
	1151	+[[image:image-20220607172042-11.png]]
	1152	+
	1153	+
	1154	+
	1155	+=== 5.3.1  ​Battery Note ===
	1156	+
	1157	+(((
	1158	+The Li-SICO battery is designed for small current / long period application. 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 time to transmit LoRa, then the battery life may be decreased.
	1159	+)))
	1160	+
	1161	+
	1162	+
	1163	+=== ​5.3.2  Replace the battery ===
	1164	+
	1165	+(((
	1166	+You can change the battery in the LLDS12.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
	1167	+)))
	1168	+
	1169	+(((
	1170	+The default battery pack of LLDS12 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
	1171	+)))
	1172	+
	1173	+
	1174	+
	1175	+= 6.  Use AT Command =
	1176	+
	1177	+== 6.1  Access AT Commands ==
	1178	+
	1179	+LLDS12 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LLDS12 for using AT command, as below.
	1180	+
	1181	+[[image:1654593668970-604.png]]
	1182	+
	1183	+**Connection:**
	1184	+
	1185	+(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
	1186	+
	1187	+(% style="background-color:yellow" %)** USB TTL TXD  <~-~-~-~-> UART_RXD**
	1188	+
	1189	+(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
	1190	+
	1191	+
	1192	+(((
	1193	+(((
	1194	+In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
	1195	+)))
	1196	+
	1197	+(((
	1198	+LLDS12 will output system info once power on as below:
	1199	+)))
	1200	+)))
	1201	+
	1202	+
	1203	+ [[image:1654593712276-618.png]]
	1204	+
	1205	+Valid AT Command please check [[Configure Device>>||anchor="H4.A0ConfigureLLDS12viaATCommandorLoRaWANDownlink"]].
	1206	+
	1207	+
	1208	+= 7.  FAQ =
	1209	+
	1210	+== 7.1  How to change the LoRa Frequency Bands/Region ==
	1211	+
	1212	+You can follow the instructions for [[how to upgrade image>>||anchor="H2.8A0200BFirmwareChangeLog"]].
	1213	+When downloading the images, choose the required image file for download. ​
	1214	+
	1215	+
	1216	+= 8.  Trouble Shooting =
	1217	+
	1218	+== 8.1  AT Commands input doesn’t work ==
	1219	+
	1220	+
	1221	+(((
1099	1099	In the 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 press the send key, user need to add ENTER in their string.
	1223	+)))
1100	1100
	1225	+
	1226	+== 8.2  Significant error between the output distant value of LiDAR and actual distance ==
	1227	+
	1228	+
1101	1101	(((
	1230	+(% style="color:blue" %)**Cause ①**(%%)**：**Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance (such as glass and water, etc.)
	1231	+)))
	1232	+
	1233	+(((
	1234	+Troubleshooting: Please avoid use of this product under such circumstance in practice.
	1235	+)))
	1236	+
	1237	+(((
1102	1102
1103	1103	)))
1104	1104
	1241	+(((
	1242	+(% style="color:blue" %)**Cause ②**(%%)**: **The IR-pass filters are blocked.
	1243	+)))
1105	1105
1106		-= 6.  Order Info =
	1245	+(((
	1246	+Troubleshooting: please use dry dust-free cloth to gently remove the foreign matter.
	1247	+)))
1107	1107
1108	1108
1109		-Part Number **:** (% style="color:blue" %)**LDDS75-XX-YY**
1110	1110
	1251	+= 9.  Order Info =
1111	1111
1112		-(% style="color:blue" %)**XX**(%%)**: **The default frequency band
1113	1113
1114		-* (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
1115		-* (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
1116		-* (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
1117		-* (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
1118		-* (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
1119		-* (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
1120		-* (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
1121		-* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
	1254	+Part Number: (% style="color:blue" %)**LLDS12-XX**
1122	1122
1123		-(% style="color:blue" %)**YY**(%%): Battery Option
1124	1124
1125		-* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1126		-* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
	1257	+(% style="color:blue" %)**XX**(%%): The default frequency band
1127	1127
	1259	+* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
	1260	+* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
	1261	+* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
	1262	+* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
	1263	+* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
	1264	+* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
	1265	+* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
	1266	+* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1128	1128
1129		-= 7. ​ Packing Info =
	1268	+= 10. ​ Packing Info =
1130	1130
1131	1131
1132	1132	**Package Includes**:
1133	1133
1134		-* LDDS75 LoRaWAN Distance Detection Sensor x 1
	1273	+* LLDS12 LoRaWAN LiDAR Distance Sensor x 1
1135	1135
1136	1136	**Dimension and weight**:
1137	1137
...	...	@@ -1140,8 +1140,7 @@
1140	1140	* Package Size / pcs : cm
1141	1141	* Weight / pcs : g
1142	1142
	1282	+= 11.  ​Support =
1143	1143
1144		-= 8.  ​Support =
1145		-
1146	1146	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1147	1147	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].

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