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804	804	* The sensor is detected when the device is turned on, and it will flash 4 times quickly when it is detected.
805	805	* Blink once when device transmit a packet.
806	806
807		-
808		-
809		-
810	810	== 2.8  ​Firmware Change Log ==
811	811
812	812
...	...	@@ -834,37 +834,25 @@
834	834	[[image:1654831774373-275.png]]
835	835
836	836
837		-(((
838	838	(% style="color:blue" %)**① **(%%)Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable.
839		-)))
840	840
841		-(((
842	842	(% style="color:blue" %)**② **(%%)Represents the operating range of The LiDAR probe detecting black target with 10% reflectivity, 0.1-5m.
843		-)))
844	844
845		-(((
846	846	(% style="color:blue" %)**③ **(%%)Represents the operating range of The LiDAR probe detecting white target with 90% reflectivity, 0.1-12m.
847		-)))
848	848
849	849
850		-(((
851	851	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:
852		-)))
853	853
854	854
855	855	[[image:1654831797521-720.png]]
856	856
857	857
858		-(((
859	859	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.
860		-)))
861	861
862	862	[[image:1654831810009-716.png]]
863	863
864	864
865		-(((
866	866	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.
867		-)))
868	868
869	869
870	870
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878	878	* The sensor window is made by Acrylic. Don’t touch it with alcohol material. This will destroy the sensor window.
879	879
880	880
	866	+
881	881	= 4.  Configure LLDS12 via AT Command or LoRaWAN Downlink =
882	882
883	883	(((
884		-(((
885	885	Use can configure LLDS12 via AT Command or LoRaWAN Downlink.
886	886	)))
887		-)))
888	888
889	889	* (((
890		-(((
891	891	AT Command Connection: See [[FAQ>>||anchor="H7.A0FAQ"]].
892	892	)))
893		-)))
894	894	* (((
895		-(((
896	896	LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
897	897	)))
898		-)))
899	899
900	900	(((
901		-(((
902	902
903		-)))
904	904
905		-(((
906	906	There are two kinds of commands to configure LLDS12, they are:
907	907	)))
908		-)))
909	909
910	910	* (((
911		-(((
912	912	(% style="color:#4f81bd" %)** General Commands**.
913	913	)))
914		-)))
915	915
916	916	(((
917		-(((
918	918	These commands are to configure:
919	919	)))
920		-)))
921	921
922	922	* (((
923		-(((
924	924	General system settings like: uplink interval.
925	925	)))
926		-)))
927	927	* (((
928		-(((
929	929	LoRaWAN protocol & radio related command.
930	930	)))
931		-)))
932	932
933	933	(((
934		-(((
935	935	They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
936	936	)))
937		-)))
938	938
939	939	(((
940		-(((
941	941
942	942	)))
943		-)))
944	944
945	945	* (((
946		-(((
947	947	(% style="color:#4f81bd" %)** Commands special design for LLDS12**
948	948	)))
949		-)))
950	950
951	951	(((
952		-(((
953	953	These commands only valid for LLDS12, as below:
954	954	)))
955		-)))
956	956
957	957
958	958
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965	965	[[image:image-20220607171554-8.png]]
966	966
967	967
	928	+
968	968	(((
969	969	(% style="color:#037691" %)**Downlink Command: 0x01**
970	970	)))
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982	982	)))
983	983	* (((
984	984	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
985		-)))
986	986
987	987
	948	+
	949	+)))
	950	+
988	988	== 4.2  Set Interrupt Mode ==
989	989
990	990	Feature, Set Interrupt mode for GPIO_EXIT.
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1013	1013	Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1014	1014	)))
1015	1015
1016		-
1017	1017	== 4.3  Get Firmware Version Info ==
1018	1018
1019	1019	Feature: use downlink to get firmware version.
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1210	1210
1211	1211
1212	1212	(((
1213		-(((
1214	1214	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LLDS12.
1215		-)))
1216	1216
1217		-(((
1218	1218	LLDS12 will output system info once power on as below:
1219	1219	)))
1220		-)))
1221	1221
1222	1222
1223	1223	[[image:1654593712276-618.png]]
...	...	@@ -1238,9 +1238,7 @@
1238	1238	== 8.1  AT Commands input doesn’t work ==
1239	1239
1240	1240
1241		-(((
1242	1242	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.
1243		-)))
1244	1244
1245	1245
1246	1246	== 8.2  Significant error between the output distant value of LiDAR and actual distance ==