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57	57	* IP66 Waterproof Enclosure
58	58	* 4000mAh or 8500mAh Battery for long term use
59	59
	60	+
	61	+
60	60	== 1.3  Specification ==
61	61
62	62	=== 1.3.1  Rated environmental conditions ===
...	...	@@ -97,6 +97,8 @@
97	97	* Sewer
98	98	* Bottom water level monitoring
99	99
	102	+
	103	+
100	100	== 1.6  Pin mapping and power on ==
101	101
102	102
...	...	@@ -237,6 +237,8 @@
237	237	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
238	238	* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
239	239
	244	+
	245	+
240	240	=== 2.3.3  Interrupt Pin ===
241	241
242	242	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.
...	...	@@ -806,6 +806,8 @@
806	806	* Solid ON for 5 seconds once device successful Join the network.
807	807	* Blink once when device transmit a packet.
808	808
	815	+
	816	+
809	809	== 2.8  ​Firmware Change Log ==
810	810
811	811
...	...	@@ -824,7 +824,7 @@
824	824	[[image:image-20220610172003-2.png]]
825	825
826	826
827		-== 2.10  Battery Analysis ==
	835	+== 2.10  Battery Analysis  ==
828	828
829	829	=== 2.10.1  Battery Type ===
830	830
...	...	@@ -849,27 +849,80 @@
849	849
850	850	=== 2.10.2  Replace the battery ===
851	851
852		-(((
853	853	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.
	861	+
	862	+
	863	+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)
	864	+
	865	+
	866	+
	867	+= 3.  LiDAR ToF Measurement =
	868	+
	869	+== 3.1 Principle of Distance Measurement ==
	870	+
	871	+The LiDAR probe is based on TOF, namely, Time of Flight principle. To be specific, the product emits modulation wave of near infrared ray on a periodic basis, which will be reflected after contacting object. The product obtains the time of flight by measuring round-trip phase difference and then calculates relative range between the product and the detection object, as shown below.
	872	+
	873	+[[image:1654831757579-263.png]]
	874	+
	875	+
	876	+
	877	+== 3.2 Distance Measurement Characteristics ==
	878	+
	879	+With optimization of light path and algorithm, The LiDAR probe has minimized influence from external environment on distance measurement performance. Despite that, the range of distance measurement may still be affected by the environment illumination intensity and the reflectivity of detection object. As shown in below:
	880	+
	881	+[[image:1654831774373-275.png]]
	882	+
	883	+
	884	+(((
	885	+(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
854	854	)))
855	855
856	856	(((
857		-
	889	+(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
858	858	)))
859	859
860	860	(((
861		-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)
	893	+(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
862	862	)))
863	863
864	864
	897	+(((
	898	+Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at the different distances. The diameter of light spot depends on the FOV of The LiDAR probe (the term of FOV generally refers to the smaller value between the receiving angle and the transmitting angle), which is calculated as follows:
	899	+)))
865	865
866		-= 3.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
867	867
	902	+[[image:1654831797521-720.png]]
	903	+
	904	+
868	868	(((
	906	+In the formula above, d is the diameter of light spot; D is detecting range; β is the value of the receiving angle of The LiDAR probe, 3.6°. Correspondence between the diameter of light spot and detecting range is given in Table below.
	907	+)))
	908	+
	909	+[[image:1654831810009-716.png]]
	910	+
	911	+
869	869	(((
870		-Use can configure LDDS75 via AT Command or LoRaWAN Downlink.
	913	+If the light spot reaches two objects with different distances, as shown in Figure 3, the output distance value will be a value between the actual distance values of the two objects. For a high accuracy requirement in practice, the above situation should be noticed to avoid the measurement error.
871	871	)))
	915	+
	916	+
	917	+
	918	+== 3.3 Notice of usage: ==
	919	+
	920	+Possible invalid /wrong reading for LiDAR ToF tech:
	921	+
	922	+* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
	923	+* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might wrong.
	924	+* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
	925	+* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
	926	+
	927	+= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
	928	+
	929	+(((
	930	+(((
	931	+Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
872	872	)))
	933	+)))
873	873
874	874	* (((
875	875	(((
...	...	@@ -888,7 +888,7 @@
888	888	)))
889	889
890	890	(((
891		-There are two kinds of commands to configure LDDS75, they are:
	952	+There are two kinds of commands to configure LLDS12, they are:
892	892	)))
893	893	)))
894	894
...	...	@@ -929,87 +929,156 @@
929	929
930	930	* (((
931	931	(((
932		-(% style="color:#4f81bd" %)** Commands special design for LDDS75**
	993	+(% style="color:#4f81bd" %)** Commands special design for LLDS12**
933	933	)))
934	934	)))
935	935
936	936	(((
937	937	(((
938		-These commands only valid for LDDS75, as below:
	999	+These commands only valid for LLDS12, as below:
939	939	)))
940	940	)))
941	941
942	942
943	943
944		-== 3.1  Access AT Commands ==
	1005	+== 4.1  Set Transmit Interval Time ==
945	945
946		-LDDS75 supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to LDDS75 for using AT command, as below.
	1007	+Feature: Change LoRaWAN End Node Transmit Interval.
947	947
948		-[[image:image-20220610172924-4.png||height="483" width="988"]]
	1009	+(% style="color:#037691" %)**AT Command: AT+TDC**
949	949
	1011	+[[image:image-20220607171554-8.png]]
950	950
951		-Or if you have below board, use below connection:
952	952
	1014	+(((
	1015	+(% style="color:#037691" %)**Downlink Command: 0x01**
	1016	+)))
953	953
954		-[[image:image-20220610172924-5.png]]
	1018	+(((
	1019	+Format: Command Code (0x01) followed by 3 bytes time value.
	1020	+)))
955	955
	1022	+(((
	1023	+If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1024	+)))
956	956
957		-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:
	1026	+* (((
	1027	+Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	1028	+)))
	1029	+* (((
	1030	+Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	1031	+)))
958	958
	1033	+== 4.2  Set Interrupt Mode ==
959	959
960		- [[image:image-20220610172924-6.png||height="601" width="860"]]
	1035	+Feature, Set Interrupt mode for GPIO_EXIT.
961	961
	1037	+(% style="color:#037691" %)**AT Command: AT+INTMOD**
962	962
	1039	+[[image:image-20220610105806-2.png]]
963	963
964		-== 3.2  Set Transmit Interval Time ==
965	965
966		-Feature: Change LoRaWAN End Node Transmit Interval.
	1042	+(((
	1043	+(% style="color:#037691" %)**Downlink Command: 0x06**
	1044	+)))
967	967
968		-(% style="color:#037691" %)**AT Command: AT+TDC**
	1046	+(((
	1047	+Format: Command Code (0x06) followed by 3 bytes.
	1048	+)))
969	969
970		-[[image:image-20220610173409-7.png]]
	1050	+(((
	1051	+This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1052	+)))
971	971
	1054	+* (((
	1055	+Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
	1056	+)))
	1057	+* (((
	1058	+Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	1059	+)))
972	972
	1061	+== 4.3  Get Firmware Version Info ==
973	973
	1063	+Feature: use downlink to get firmware version.
974	974
975		-(((
976		-(% style="color:#037691" %)**Downlink Command: 0x01**
977		-)))
	1065	+(% style="color:#037691" %)**Downlink Command: 0x26**
978	978
979		-(((
980		-(((
981		-Format: Command Code (0x01) followed by 3 bytes time value.
	1067	+[[image:image-20220607171917-10.png]]
982	982
983		-If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
	1069	+* Reply to the confirmation package: 26 01
	1070	+* Reply to non-confirmed packet: 26 00
984	984
985		-* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
986		-* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
987		-)))
	1072	+Device will send an uplink after got this downlink command. With below payload:
988	988
	1074	+Configures info payload:
989	989
990		-
	1076	+(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
	1077	+|=(((
	1078	+**Size(bytes)**
	1079	+)))|=**1**|=**1**|=**1**|=**1**|=**1**|=**5**|=**1**
	1080	+|**Value**|Software Type|(((
	1081	+Frequency
	1082	+
	1083	+Band
	1084	+)))|Sub-band|(((
	1085	+Firmware
	1086	+
	1087	+Version
	1088	+)))|Sensor Type|Reserve|(((
	1089	+[[Message Type>>||anchor="H2.3.7A0MessageType"]]
	1090	+Always 0x02
991	991	)))
992	992
993		-== 3.3  Set Interrupt Mode ==
	1093	+**Software Type**: Always 0x03 for LLDS12
994	994
995		-Feature, Set Interrupt mode for GPIO_EXIT.
996	996
	1096	+**Frequency Band**:
997	997
998		-(% style="color:#037691" %)**Downlink Command: AT+INTMOD**
	1098	+*0x01: EU868
999	999
1000		-[[image:image-20220610105907-1.png]]
	1100	+*0x02: US915
1001	1001
	1102	+*0x03: IN865
1002	1002
1003		-(% style="color:#037691" %)**Downlink Command: 0x06**
	1104	+*0x04: AU915
1004	1004
1005		-Format: Command Code (0x06) followed by 3 bytes.
	1106	+*0x05: KZ865
1006	1006
1007		-This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
	1108	+*0x06: RU864
1008	1008
1009		-* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1010		-* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
	1110	+*0x07: AS923
1011	1011
	1112	+*0x08: AS923-1
1012	1012
	1114	+*0x09: AS923-2
	1115	+
	1116	+*0xa0: AS923-3
	1117	+
	1118	+
	1119	+**Sub-Band**: value 0x00 ~~ 0x08
	1120	+
	1121	+
	1122	+**Firmware Version**: 0x0100, Means: v1.0.0 version
	1123	+
	1124	+
	1125	+**Sensor Type**:
	1126	+
	1127	+0x01: LSE01
	1128	+
	1129	+0x02: LDDS75
	1130	+
	1131	+0x03: LDDS20
	1132	+
	1133	+0x04: LLMS01
	1134	+
	1135	+0x05: LSPH01
	1136	+
	1137	+0x06: LSNPK01
	1138	+
	1139	+0x07: LLDS12
	1140	+
	1141	+
	1142	+
1013	1013	= 5.  Battery & How to replace =
1014	1014
1015	1015	== 5.1  Battery Type ==

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