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Last modified by Xiaoling on 2023/07/18 10:12
From version 195.1
edited by Bei Jinggeng
on 2022/09/06 10:13
Change comment: Uploaded new attachment "image-20220906101320-5.png", version {1}
To version 198.2
edited by Xiaoling
on 2022/09/06 14:22
Change comment: There is no comment for this version

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1 -XWiki.Bei
1 +XWiki.Xiaoling
Content
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16 16  
17 17  = 1. Introduction =
18 18  
19 +
19 19  == 1.1 What is LHT65N Temperature & Humidity Sensor ==
20 20  
21 21  
... ... @@ -44,6 +44,7 @@
44 44  )))
45 45  
46 46  
48 +
47 47  == 1.2 Features ==
48 48  
49 49  
... ... @@ -60,11 +60,10 @@
60 60  * Datalog feature (Max 3328 records)
61 61  
62 62  
63 -
64 64  == 1.3 Specification ==
65 65  
66 66  
67 -**Built-in Temperature Sensor:**
68 +(% style="color:#037691" %)**Built-in Temperature Sensor:**
68 68  
69 69  * Resolution: 0.01 °C
70 70  * Accuracy Tolerance : Typ ±0.3 °C
... ... @@ -71,7 +71,7 @@
71 71  * Long Term Drift: < 0.02 °C/yr
72 72  * Operating Range: -40 ~~ 85 °C
73 73  
74 -**Built-in Humidity Sensor:**
75 +(% style="color:#037691" %)**Built-in Humidity Sensor:**
75 75  
76 76  * Resolution: 0.04 %RH
77 77  * Accuracy Tolerance : Typ ±3 %RH
... ... @@ -78,7 +78,7 @@
78 78  * Long Term Drift: < 0.02 °C/yr
79 79  * Operating Range: 0 ~~ 96 %RH
80 80  
81 -**External Temperature Sensor:**
82 +(% style="color:#037691" %)**External Temperature Sensor:**
82 82  
83 83  * Resolution: 0.0625 °C
84 84  * ±0.5°C accuracy from -10°C to +85°C
... ... @@ -86,9 +86,9 @@
86 86  * Operating Range: -55 °C ~~ 125 °C
87 87  
88 88  
89 -
90 90  = 2. Connect LHT65N to IoT Server =
91 91  
92 +
92 92  == 2.1 How does LHT65N work? ==
93 93  
94 94  
... ... @@ -319,6 +319,7 @@
319 319  
320 320  * Temperature:  0x0ABB/100=27.47℃
321 321  
323 +
322 322  [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
323 323  
324 324  * Temperature:  (0xF5C6-65536)/100=-26.18℃
... ... @@ -493,6 +493,7 @@
493 493  
494 494  
495 495  
498 +
496 496  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
497 497  
498 498  
... ... @@ -502,7 +502,7 @@
502 502  
503 503  sensor by setting:
504 504  
505 -AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)Time to power this sensor, from 0 ~~ 65535ms
508 +AT+EXT=6,timeout  (% _msthash="506085" _msttexthash="8782189" _mstvisible="3" style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
506 506  
507 507  For example:
508 508  
... ... @@ -525,6 +525,7 @@
525 525  
526 526  When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
527 527  
531 +
528 528  1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
529 529  
530 530  [[image:image-20220628151005-5.png]]
... ... @@ -541,6 +541,165 @@
541 541  
542 542  
543 543  
548 +==== 2.4.6.4 Ext~=2 TMP117 Sensor （since v1.3） ====
549 +
550 +
551 +**Ext=2,Temperature Sensor(TMP117)：**
552 +
553 +[[image:image-20220906102307-7.png]]
554 +
555 +
556 +(% style="color:blue" %)**Interrupt Mode and Counting Mode:**
557 +
558 +The external cable NE2 can be use for MOD4 and MOD8
559 +
560 +
561 +
562 +
563 +==== 2.4.6.5 Ext~=4 Interrupt Mode （since v1.3） ====
564 +
565 +
566 +(% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
567 +
568 +
569 +(% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
570 +
571 +**Case 1: Door Sensor.** 3.3v Out for such sensor is just to detect Open/Close.
572 +
573 + In Open State, the power consumption is the same as if there is no probe
574 +
575 + In Close state, the power consumption will be 3uA higher than normal.
576 +
577 +[[image:image-20220906100852-1.png||height="205" width="377"]]
578 +
579 +
580 +Ext=4,Interrupt Sensor：
581 +
582 +(% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:512px" %)
583 +|(% style="width:117px" %)(((
584 +AT+EXT=4,1
585 +)))|(% style="width:371px" %)(((
586 +Sent uplink packet in both rising and falling interrupt
587 +)))
588 +|(% style="width:117px" %)(((
589 +AT+EXT=4,2
590 +)))|(% style="width:371px" %)(((
591 +Sent uplink packet only in falling interrupt
592 +)))
593 +|(% style="width:117px" %)(((
594 +AT+EXT=4,3
595 +)))|(% style="width:371px" %)(((
596 +Sent uplink packet only in rising interrupt
597 +)))
598 +
599 +Trigger by falling edge:
600 +
601 +[[image:image-20220906101145-2.png]]
602 +
603 +
604 +Trigger by raising edge：
605 +
606 +[[image:image-20220906101145-3.png]]
607 +
608 +
609 +
610 +
611 +==== 2.4.6.6 Ext~=8 Counting Mode（since v1.3） ====
612 +
613 +
614 +(% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
615 +
616 +
617 +(% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
618 +
619 +[[image:image-20220906101320-4.png||height="366" width="698"]]
620 +
621 +
622 +(% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
623 +
624 +[[image:image-20220906101320-5.png||height="353" width="696"]]
625 +
626 +Ext=8, Counting Sensor ( 4 bytes)：
627 +
628 +(% border="2" cellpadding="4" cellspacing="4" style="background-color:#ffffcc; color:green; height:6px; width:381px" %)
629 +|(% style="width:138px" %)(((
630 +AT+EXT=8,0
631 +)))|(% style="width:240px" %)(((
632 +Count at falling interrupt
633 +)))
634 +|(% style="width:138px" %)(((
635 +AT+EXT=8,1
636 +)))|(% style="width:240px" %)(((
637 +Count at rising interrupt
638 +)))
639 +|(% style="width:138px" %)(((
640 +AT+SETCNT=60
641 +)))|(% style="width:240px" %)(((
642 +Sent current count to 60
643 +)))
644 +
645 +[[image:image-20220906101320-6.png]]
646 +
647 +
648 +(% style="color:blue" %)**A2 downlink Command：**
649 +
650 +A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
651 +
652 +A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
653 +
654 +A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
655 +
656 +A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
657 +
658 +A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
659 +
660 +
661 +(% style="color:blue" %)**Modified ATWOOD command for external sensor TMP117 or DS18B20 temperature alarm.**
662 +
663 +
664 +(% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
665 +
666 +(% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
667 +
668 +0): Cancel
669 +
670 +1): Threshold alarm
671 +
672 +2): Fluctuation alarm
673 +
674 +
675 +(% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
676 +
677 +(% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
678 +
679 +
680 +(% style="color:#037691" %) **Parameter 3 and parameter 4:**
681 +
682 +1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
683 +
684 +Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
685 +
686 +
687 +2):  If Alarm Mode is set to 2: Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
688 +
689 +Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
690 +
691 +If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
692 +
693 +
694 +(% style="color:blue" %)** Downlink:**
695 +
696 +0xA5 00 ~-~- AT+WMOD=0.
697 +
698 +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 )
699 +
700 +0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
701 +
702 +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.
703 +
704 +
705 +
706 +
544 544  == 2.5 Show data on Datacake ==
545 545  
546 546  
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1090 1090  * RED LED when external sensor is not connected
1091 1091  * For each success downlink, the PURPLE LED will blink once
1092 1092  
1093 -
1094 -
1095 1095  == 2.9 installation ==
1096 1096  
1097 1097  
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1148 1148  * Operating Range: -40 ~~ 125 °C
1149 1149  * Working voltage 2.35v ~~ 5v
1150 1150  
1151 -
1152 -
1153 1153  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1154 1154  
1155 1155  
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1219 1219  
1220 1220  * **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1221 1221  
1222 -
1223 -
1224 1224  == 4.2 Set External Sensor Mode ==
1225 1225  
1226 1226  
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1244 1244  
1245 1245  * 0xA20702003c: Same as AT+SETCNT=60
1246 1246  
1247 -
1248 -
1249 1249  == 4.3 Enable/Disable uplink Temperature probe ID ==
1250 1250  
1251 1251  
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1276 1276  * **0xA800**  **~-~->** AT+PID=0
1277 1277  * **0xA801**     **~-~->** AT+PID=1
1278 1278  
1279 -
1280 -
1281 1281  == 4.4 Set Password ==
1282 1282  
1283 1283  
... ... @@ -1329,8 +1329,6 @@
1329 1329  
1330 1330  * There is no downlink command to set to Sleep mode.
1331 1331  
1332 -
1333 -
1334 1334  == 4.7 Set system time ==
1335 1335  
1336 1336  
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1439 1439  
1440 1440  * Example: 0xA301 ~/~/Same as AT+CLRDTA
1441 1441  
1442 -
1443 -
1444 1444  == 4.13 Auto Send None-ACK messages ==
1445 1445  
1446 1446  
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1461 1461  
1462 1462  * Example: 0x3401 ~/~/Same as AT+PNACKMD=1
1463 1463  
1464 -
1465 -
1466 1466  = 5. Battery & How to replace =
1467 1467  
1468 1468  == 5.1 Battery Type ==
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1934 1934  
1935 1935  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1936 1936  
1937 -
1938 1938  = 8. Packing Info =
1939 1939  
1940 1940  
... ... @@ -1948,13 +1948,11 @@
1948 1948  * Device Size:  10 x 10 x 3.5 cm
1949 1949  * Device Weight: 120.5g
1950 1950  
1951 -
1952 1952  = 9. Reference material =
1953 1953  
1954 1954  
1955 1955  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1956 1956  
1957 -
1958 1958  = 10. FCC Warning =
1959 1959  
1960 1960  
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