Skip to Content
Last modified by Xiaoling on 2023/07/18 10:12
From version 210.13
edited by Xiaoling
on 2022/10/26 17:13
Change comment: There is no comment for this version
To version 223.1
edited by Bei Jinggeng
on 2022/11/28 17:20
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.Bei
Content
... ... @@ -16,7 +16,6 @@
16 16  
17 17  = 1. Introduction =
18 18  
19 -
20 20  == 1.1 What is LHT65N Temperature & Humidity Sensor ==
21 21  
22 22  
... ... @@ -61,6 +61,7 @@
61 61  * Tri-color LED to indicate working status
62 62  * Datalog feature (Max 3328 records)
63 63  
63 +
64 64  == 1.3 Specification ==
65 65  
66 66  
... ... @@ -85,9 +85,9 @@
85 85  * ±2°C accuracy from -55°C to +125°C
86 86  * Operating Range: -55 °C ~~ 125 °C
87 87  
88 +
88 88  = 2. Connect LHT65N to IoT Server =
89 89  
90 -
91 91  == 2.1 How does LHT65N work? ==
92 92  
93 93  
... ... @@ -100,7 +100,6 @@
100 100  )))
101 101  
102 102  
103 -
104 104  == 2.2 How to Activate LHT65N? ==
105 105  
106 106  
... ... @@ -109,7 +109,7 @@
109 109  )))
110 110  
111 111  * (((
112 -(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
111 +(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
113 113  )))
114 114  * (((
115 115  (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
... ... @@ -125,7 +125,6 @@
125 125  [[image:image-20220525110604-2.png||_mstalt="427531" _mstvisible="3"]]
126 126  
127 127  
128 -
129 129  == 2.3 Example to join LoRaWAN network ==
130 130  
131 131  
... ... @@ -184,7 +184,6 @@
184 184  
185 185  
186 186  
187 -
188 188  === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
189 189  
190 190  
... ... @@ -195,7 +195,6 @@
195 195  [[image:image-20220522233300-8.png||_mstalt="428389" _mstvisible="3" height="219" width="722"]]
196 196  
197 197  
198 -
199 199  == 2.4 Uplink Payload   ( Fport~=2) ==
200 200  
201 201  
... ... @@ -243,6 +243,7 @@
243 243  * The 7th byte (EXT #): defines the external sensor model.
244 244  * The 8(% _msthash="734578" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) ~~ 11(% _msthash="734579" _msttexthash="21372" _mstvisible="4" %)^^th^^(%%) byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
245 245  
242 +
246 246  === 2.4.1 Decoder in TTN V3 ===
247 247  
248 248  
... ... @@ -271,6 +271,7 @@
271 271  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
272 272  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
273 273  
271 +
274 274  === 2.4.3 Built-in Temperature ===
275 275  
276 276  
... ... @@ -282,6 +282,7 @@
282 282  
283 283  * Temperature:  (0xF5C6-65536)/100=-26.18℃
284 284  
283 +
285 285  === 2.4.4 Built-in Humidity ===
286 286  
287 287  
... ... @@ -289,6 +289,7 @@
289 289  
290 290  * Humidity:    0x025C/10=60.4%
291 291  
291 +
292 292  === 2.4.5 Ext # ===
293 293  
294 294  
... ... @@ -297,10 +297,8 @@
297 297  [[image:image-20220523152822-17.png||_mstalt="454545" _mstvisible="3"]]
298 298  
299 299  
300 -
301 301  === 2.4.6 Ext value ===
302 302  
303 -
304 304  ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
305 305  
306 306  
... ... @@ -311,6 +311,8 @@
311 311  
312 312  The last 2 bytes of data are meaningless
313 313  
312 +
313 +
314 314  [[image:image-20220522235639-6.png||_mstalt="433212" _mstvisible="3"]]
315 315  
316 316  
... ... @@ -385,6 +385,7 @@
385 385  * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
386 386  * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
387 387  
388 +
388 388  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
389 389  
390 390  
... ... @@ -498,7 +498,6 @@
498 498  
499 499  
500 500  
501 -
502 502  ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
503 503  
504 504  
... ... @@ -598,7 +598,6 @@
598 598  [[image:image-20220523000825-10.png||_mstalt="450619" _mstvisible="3" height="413" width="728"]]
599 599  
600 600  
601 -
602 602  == 2.6 Datalog Feature ==
603 603  
604 604  
... ... @@ -607,7 +607,6 @@
607 607  )))
608 608  
609 609  
610 -
611 611  === 2.6.1 Ways to get datalog via LoRaWAN ===
612 612  
613 613  
... ... @@ -618,6 +618,7 @@
618 618  
619 619  (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
620 620  
619 +
621 621  (% style="color:red" %)**Note for method 2:**
622 622  
623 623  * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
... ... @@ -645,10 +645,10 @@
645 645  
646 646  [[image:image-20220523001219-12.png||_mstalt="450827" _mstvisible="3" height="298" width="720"]]
647 647  
647 +
648 648  So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
649 649  
650 650  
651 -
652 652  === 2.6.3 Set Device Time ===
653 653  
654 654  
... ... @@ -672,10 +672,8 @@
672 672  (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
673 673  )))
674 674  
675 -(((
676 -
677 -)))
678 678  
675 +
679 679  (((
680 680  **2. Manually Set Time**
681 681  )))
... ... @@ -719,7 +719,6 @@
719 719  
720 720  **Poll message flag & Ext:**
721 721  
722 -
723 723  [[image:image-20221006192726-1.png||height="112" width="754"]]
724 724  
725 725  (% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
... ... @@ -762,7 +762,7 @@
762 762  [[image:image-20220523001219-13.png||_mstalt="451204" _mstvisible="3" height="421" style="text-align:left" width="727"]]
763 763  
764 764  
765 -7FFF089801464160065F977FFF088E014B41600660097FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
761 +__**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
766 766  
767 767  Where the first 11 bytes is for the first entry:
768 768  
... ... @@ -770,19 +770,18 @@
770 770  
771 771  Ext sensor data=0x7FFF/100=327.67
772 772  
773 -Temp=0x0898/100=22.00
769 +Temp=0x088E/100=22.00
774 774  
775 -Hum=0x0146/10=32.6
771 +Hum=0x014B/10=32.6
776 776  
777 777  poll message flag & Ext=0x41,means reply data,Ext=1
778 778  
779 -Unix time is 0x60065F97=1611030423s=21/1/19 04:27:03
775 +Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
780 780  
781 781  
778 +== 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
782 782  
783 -== 2.7 Alarm Mode ==
784 784  
785 -
786 786  (((
787 787  when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
788 788  )))
... ... @@ -791,14 +791,15 @@
791 791  (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
792 792  
793 793  
794 -
795 795  === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
796 796  
797 797  
792 +**Internal GXHT30 temperature alarm（Acquisition time: fixed at one minute）**
793 +
798 798  (((
799 799  (% class="box infomessage" %)
800 800  (((
801 -**AT+WMOD=3,**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
797 +**AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
802 802  
803 803  **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
804 804  
... ... @@ -812,15 +812,120 @@
812 812  )))
813 813  )))
814 814  
811 +(% style="color:#4f81bd" %)**Downlink Command:**
815 815  
816 -
813 +AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
814 +
815 +AT+CITEMP=1 : A60001
816 +
817 +AT+ARTEMP=1,60  :  A70001003C
818 +
819 +AT+ARTEMP=-16,60 :  A7FFF0003C
820 +
821 +AT+LEDALARM=1  :  3601
822 +
823 +
824 +(% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
825 +
826 +Total bytes: 8 bytes
827 +
828 +**Example: **AA0100010001003C
829 +
830 +WMOD=01
831 +
832 +CITEMP=0001
833 +
834 +TEMPlow=0001
835 +
836 +TEMPhigh=003C
837 +
838 +
839 +**DS18B20 and TMP117 Threshold Alarm**
840 +
841 +**~ AT+WMOD=1,60,-10,20**
842 +
843 +(% style="color:#4f81bd" %)**Downlink Command:**
844 +
845 +**Example: **A5013CFC180014
846 +
847 +MOD=01
848 +
849 +CITEMP=3C(S)
850 +
851 +TEMPlow=FC18
852 +
853 +TEMPhigh=0014
854 +
855 +
856 +**Fluctuation alarm for DS18B20 and TMP117（Acquisition time: minimum 1s）**
857 +
858 +**AT+WMOD=2,60,5** 
859 +
860 +(% style="color:#4f81bd" %)**Downlink Command:**
861 +
862 +**Example: **A5023C05
863 +
864 +MOD=02
865 +
866 +CITEMP=3C(S)
867 +
868 +temperature fluctuation=05
869 +
870 +
871 +==== **Sampling multiple times and uplink together** ====
872 +
873 +**AT+WMOD=3,1,60,20,-16,32,1**   
874 +
875 +Explain:
876 +
877 +* Set Working Mode to **Mode 3**
878 +* Sampling Interval is **60**s.
879 +* When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
880 +* Temperature alarm range is **-16** to **32**°C,
881 +* **1** to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
882 +
883 +(% style="color:#4f81bd" %)**Downlink Command:**
884 +
885 +**Example: **A50301003C14FFF0002001
886 +
887 +MOD=03
888 +
889 +EXT=01
890 +
891 +CITEMP=003C(S)
892 +
893 +Total number of acquisitions=14
894 +
895 +TEMPlow=FFF0
896 +
897 +TEMPhigh=0020
898 +
899 +ARTEMP=01
900 +
901 +
902 +**Uplink payload( Fport=3)**
903 +
904 +**Example: CBEA**01**0992**//0A41//**09C4**
905 +
906 +BatV=CBEA
907 +
908 +EXT=01
909 +
910 +Temp1=0992  ~/~/ 24.50℃
911 +
912 +Temp2=0A41  ~/~/ 26.25℃
913 +
914 +Temp3=09C4  ~/~/ 25.00℃
915 +
916 +
917 +(% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
918 +
919 +(% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
817 817  )))
818 818  
819 -(((
922 +
820 820  === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
821 821  
822 -
823 -)))
824 824  
825 825  (% _mstvisible="1" class="box infomessage" %)
826 826  (((
... ... @@ -860,7 +860,6 @@
860 860  TEMPhigh=003C
861 861  
862 862  
863 -
864 864  == 2.8 LED Indicator ==
865 865  
866 866  
... ... @@ -875,6 +875,7 @@
875 875  * RED LED when external sensor is not connected
876 876  * For each success downlink, the PURPLE LED will blink once
877 877  
978 +
878 878  == 2.9 installation ==
879 879  
880 880  
... ... @@ -885,7 +885,6 @@
885 885  
886 886  = 3. Sensors and Accessories =
887 887  
888 -
889 889  == 3.1 E2 Extension Cable ==
890 890  
891 891  
... ... @@ -916,8 +916,6 @@
916 916  [[image:image-20220619092421-3.png||height="371" width="529"]]
917 917  
918 918  
919 -
920 -
921 921  == 3.2 E3 Temperature Probe ==
922 922  
923 923  
... ... @@ -932,6 +932,7 @@
932 932  * Operating Range: -40 ~~ 125 °C
933 933  * Working voltage 2.35v ~~ 5v
934 934  
1033 +
935 935  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
936 936  
937 937  
... ... @@ -979,7 +979,6 @@
979 979  )))
980 980  
981 981  
982 -
983 983  == 4.1 Set Transmit Interval Time ==
984 984  
985 985  
... ... @@ -1001,6 +1001,7 @@
1001 1001  
1002 1002  * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1003 1003  
1102 +
1004 1004  == 4.2 Set External Sensor Mode ==
1005 1005  
1006 1006  
... ... @@ -1024,6 +1024,7 @@
1024 1024  
1025 1025  * 0xA20702003c: Same as AT+SETCNT=60
1026 1026  
1126 +
1027 1027  == 4.3 Enable/Disable uplink Temperature probe ID ==
1028 1028  
1029 1029  
... ... @@ -1054,6 +1054,7 @@
1054 1054  * **0xA800**  **~-~->** AT+PID=0
1055 1055  * **0xA801**     **~-~->** AT+PID=1
1056 1056  
1157 +
1057 1057  == 4.4 Set Password ==
1058 1058  
1059 1059  
... ... @@ -1070,7 +1070,6 @@
1070 1070  No downlink command for this feature.
1071 1071  
1072 1072  
1073 -
1074 1074  == 4.5 Quit AT Command ==
1075 1075  
1076 1076  
... ... @@ -1087,7 +1087,6 @@
1087 1087  No downlink command for this feature.
1088 1088  
1089 1089  
1090 -
1091 1091  == 4.6 Set to sleep mode ==
1092 1092  
1093 1093  
... ... @@ -1105,6 +1105,7 @@
1105 1105  
1106 1106  * There is no downlink command to set to Sleep mode.
1107 1107  
1207 +
1108 1108  == 4.7 Set system time ==
1109 1109  
1110 1110  
... ... @@ -1121,7 +1121,6 @@
1121 1121  0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1122 1122  
1123 1123  
1124 -
1125 1125  == 4.8 Set Time Sync Mode ==
1126 1126  
1127 1127  
... ... @@ -1146,7 +1146,6 @@
1146 1146  0x28 00  ~/~/  Same As AT+SYNCMOD=0
1147 1147  
1148 1148  
1149 -
1150 1150  == 4.9 Set Time Sync Interval ==
1151 1151  
1152 1152  
... ... @@ -1163,7 +1163,6 @@
1163 1163  **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1164 1164  
1165 1165  
1166 -
1167 1167  == 4.10 Print data entries base on page. ==
1168 1168  
1169 1169  
... ... @@ -1180,7 +1180,6 @@
1180 1180  No downlink commands for feature
1181 1181  
1182 1182  
1183 -
1184 1184  == 4.11 Print last few data entries. ==
1185 1185  
1186 1186  
... ... @@ -1197,7 +1197,6 @@
1197 1197  No downlink commands for feature
1198 1198  
1199 1199  
1200 -
1201 1201  == 4.12 Clear Flash Record ==
1202 1202  
1203 1203  
... ... @@ -1213,6 +1213,7 @@
1213 1213  
1214 1214  * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1215 1215  
1311 +
1216 1216  == 4.13 Auto Send None-ACK messages ==
1217 1217  
1218 1218  
... ... @@ -1232,13 +1232,13 @@
1232 1232  * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1233 1233  
1234 1234  
1235 -== 4.14 Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm ==
1331 +== 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm（Since firmware 1.3.0） ==
1236 1236  
1237 1237  
1238 1238  Feature: Set internal and external temperature sensor alarms.
1239 1239  
1240 1240  (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1241 -|=(% style="width: 268px;" %)**Command Example**|=(% style="width: 255px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1337 +|=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1242 1242  |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1243 1243  
1244 1244  (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
... ... @@ -1277,39 +1277,32 @@
1277 1277  
1278 1278  0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
1279 1279  
1376 +0XA5 01 0A F9 C0 29 04 ~-~-AT+WMOD=1,10,-16,105(Need to convert -16 to -1600 for calculation，-1600(DEC)=FFFFFFFFFFFFF9C0(HEX)  FFFFFFFFFFFFF9C0(HEX) +10000(HEX)=F9C0(HEX))
1377 +
1280 1280  0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1281 1281  
1282 1282  0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
1283 1283  
1284 1284  
1285 -
1286 1286  = 5. Battery & How to replace =
1287 1287  
1288 -
1289 1289  == 5.1 Battery Type ==
1290 1290  
1291 1291  
1292 1292  (((
1293 -(((
1294 1294  LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1295 1295  )))
1296 -)))
1297 1297  
1298 1298  (((
1299 -
1300 -)))
1301 -
1302 -(((
1303 -(((
1304 1304  The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1394 +
1395 +
1305 1305  [[image:image-20220515075034-1.png||_mstalt="428961" _mstvisible="4" height="208" width="644"]]
1306 1306  )))
1307 -)))
1308 1308  
1309 1309  The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1310 1310  
1311 1311  
1312 -
1313 1313  == 5.2 Replace Battery ==
1314 1314  
1315 1315  
... ... @@ -1326,9 +1326,6 @@
1326 1326  [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
1327 1327  )))
1328 1328  
1329 -(((
1330 -
1331 -)))
1332 1332  
1333 1333  (((
1334 1334  A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
... ... @@ -1335,10 +1335,8 @@
1335 1335  )))
1336 1336  
1337 1337  
1338 -
1339 1339  = 6. FAQ =
1340 1340  
1341 -
1342 1342  == 6.1 How to use AT Command? ==
1343 1343  
1344 1344  
... ... @@ -1559,7 +1559,6 @@
1559 1559  AT+PID:  Get or set the PID
1560 1560  
1561 1561  
1562 -
1563 1563  == 6.2 Where to use AT commands and Downlink commands ==
1564 1564  
1565 1565  
... ... @@ -1599,7 +1599,6 @@
1599 1599  [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1600 1600  
1601 1601  
1602 -
1603 1603  == 6.3 How to change the uplink interval？ ==
1604 1604  
1605 1605  
... ... @@ -1606,7 +1606,6 @@
1606 1606  Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_msthash="506137" _msttexthash="5712018" style="background-color: rgb(255, 255, 255);"]]
1607 1607  
1608 1608  
1609 -
1610 1610  == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1611 1611  
1612 1612  
... ... @@ -1625,7 +1625,6 @@
1625 1625  [[image:image-20220615154519-3.png||height="672" width="807"]]
1626 1626  
1627 1627  
1628 -
1629 1629  == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1630 1630  
1631 1631  
... ... @@ -1668,7 +1668,6 @@
1668 1668  Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1669 1669  
1670 1670  
1671 -
1672 1672  == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1673 1673  
1674 1674  
... ... @@ -1688,7 +1688,6 @@
1688 1688  [[image:image-20220615154519-3.png||height="672" width="807"]]
1689 1689  
1690 1690  
1691 -
1692 1692  == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1693 1693  
1694 1694  
... ... @@ -1710,7 +1710,7 @@
1710 1710  [[image:image-20220623113959-5.png||height="528" width="397"]]
1711 1711  
1712 1712  (% _msthash="506146" _msttexthash="52173160" %)
1713 -Press and hold the start key to restart and enter  (% _mstvisible="1" %)bootlaod(%%) mode.
1791 +Connect A8 and GND with Dupont wire for a while and then separate，enter reset mode
1714 1714  
1715 1715  
1716 1716  
... ... @@ -1727,10 +1727,9 @@
1727 1727  [[image:image-20220620160723-8.png]]
1728 1728  
1729 1729  
1730 -Finally,restart reset device again
1808 +Finally,Disconnect 3.3v，Connect A8 and GND with Dupont wire for a while and then separate，exit reset mode
1731 1731  
1732 1732  
1733 -
1734 1734  = 7. Order Info =
1735 1735  
1736 1736  
... ... @@ -1751,6 +1751,7 @@
1751 1751  
1752 1752  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1753 1753  
1831 +
1754 1754  = 8. Packing Info =
1755 1755  
1756 1756  
... ... @@ -1761,14 +1761,16 @@
1761 1761  
1762 1762  **Dimension and weight**:
1763 1763  
1764 -* Device Size:  10 x 10 x 3.5 cm
1842 +* Device Size:  10 x 10 x 3.5 mm
1765 1765  * Device Weight: 120.5g
1766 1766  
1845 +
1767 1767  = 9. Reference material =
1768 1768  
1769 1769  
1770 1770  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1771 1771  
1851 +
1772 1772  = 10. FCC Warning =
1773 1773  
1774 1774