Skip to Content
Last modified by Xiaoling on 2023/07/18 10:12
From version 189.11
edited by Xiaoling
on 2022/08/08 16:54
Change comment: There is no comment for this version
To version 198.2
edited by Xiaoling
on 2022/09/06 14:22
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -16,6 +16,7 @@
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  
... ... @@ -57,12 +57,13 @@
57 57  * Built-in Temperature & Humidity sensor
58 58  * Optional External Sensors
59 59  * Tri-color LED to indicate working status
60 -* Datalog feature
62 +* Datalog feature (Max 3328 records)
61 61  
64 +
62 62  == 1.3 Specification ==
63 63  
64 64  
65 -**Built-in Temperature Sensor:**
68 +(% style="color:#037691" %)**Built-in Temperature Sensor:**
66 66  
67 67  * Resolution: 0.01 °C
68 68  * Accuracy Tolerance : Typ ±0.3 °C
... ... @@ -69,7 +69,7 @@
69 69  * Long Term Drift: < 0.02 °C/yr
70 70  * Operating Range: -40 ~~ 85 °C
71 71  
72 -**Built-in Humidity Sensor:**
75 +(% style="color:#037691" %)**Built-in Humidity Sensor:**
73 73  
74 74  * Resolution: 0.04 %RH
75 75  * Accuracy Tolerance : Typ ±3 %RH
... ... @@ -76,7 +76,7 @@
76 76  * Long Term Drift: < 0.02 °C/yr
77 77  * Operating Range: 0 ~~ 96 %RH
78 78  
79 -**External Temperature Sensor:**
82 +(% style="color:#037691" %)**External Temperature Sensor:**
80 80  
81 81  * Resolution: 0.0625 °C
82 82  * ±0.5°C accuracy from -10°C to +85°C
... ... @@ -83,8 +83,10 @@
83 83  * ±2°C accuracy from -55°C to +125°C
84 84  * Operating Range: -55 °C ~~ 125 °C
85 85  
89 +
86 86  = 2. Connect LHT65N to IoT Server =
87 87  
92 +
88 88  == 2.1 How does LHT65N work? ==
89 89  
90 90  
... ... @@ -272,6 +272,8 @@
272 272  * The 7th byte (EXT #): defines the external sensor model.
273 273  * 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.)
274 274  
280 +
281 +
275 275  === 2.4.1 Decoder in TTN V3 ===
276 276  
277 277  
... ... @@ -304,6 +304,8 @@
304 304  * BAT status=(0Xcba4>>14)&0xFF=11(B)，very good
305 305  * Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV
306 306  
314 +
315 +
307 307  === 2.4.3 Built-in Temperature ===
308 308  
309 309  
... ... @@ -311,10 +311,13 @@
311 311  
312 312  * Temperature:  0x0ABB/100=27.47℃
313 313  
323 +
314 314  [[image:image-20220522235639-3.png||_mstalt="432120" _mstvisible="3"]]
315 315  
316 316  * Temperature:  (0xF5C6-65536)/100=-26.18℃
317 317  
328 +
329 +
318 318  === 2.4.4 Built-in Humidity ===
319 319  
320 320  
... ... @@ -322,6 +322,8 @@
322 322  
323 323  * Humidity:    0x025C/10=60.4%
324 324  
337 +
338 +
325 325  === 2.4.5 Ext # ===
326 326  
327 327  
... ... @@ -333,6 +333,7 @@
333 333  
334 334  === 2.4.6 Ext value ===
335 335  
350 +
336 336  ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
337 337  
338 338  
... ... @@ -478,6 +478,9 @@
478 478  * (% 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.
479 479  * (% 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)
480 480  
496 +
497 +
498 +
481 481  ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
482 482  
483 483  
... ... @@ -487,7 +487,7 @@
487 487  
488 488  sensor by setting:
489 489  
490 -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**
491 491  
492 492  For example:
493 493  
... ... @@ -510,6 +510,7 @@
510 510  
511 511  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.
512 512  
531 +
513 513  1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
514 514  
515 515  [[image:image-20220628151005-5.png]]
... ... @@ -526,6 +526,165 @@
526 526  
527 527  
528 528  
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 +
529 529  == 2.5 Show data on Datacake ==
530 530  
531 531  
... ... @@ -589,7 +589,7 @@
589 589  There are two methods:
590 590  
591 591  1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specifying time range.
592 -1. Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will store the sensor data, and it will send all messages after the network recovery.
770 +1. 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 message and store the sensor data, and it will send all messages (10s interval) after the network recovery. note: a) LHT65N will do ack check for data records sending to make sure every data arrive server. b) LHT65N will send data in CONFIRMED Mode when PNACKMD=1, but it won't re-transmit the same packet , it will just mark it as NONE-ACK and resend after network is detected.
593 593  
594 594  Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
595 595  
... ... @@ -1903,9 +1903,6 @@
1903 1903  
1904 1904  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1905 1905  
1906 -
1907 -
1908 -
1909 1909  = 8. Packing Info =
1910 1910  
1911 1911  
... ... @@ -1919,17 +1919,11 @@
1919 1919  * Device Size:  10 x 10 x 3.5 cm
1920 1920  * Device Weight: 120.5g
1921 1921  
1922 -
1923 -
1924 -
1925 1925  = 9. Reference material =
1926 1926  
1927 1927  
1928 1928  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0||_msthash="504975" _msttexthash="51420512"]]
1929 1929  
1930 -
1931 -
1932 -
1933 1933  = 10. FCC Warning =
1934 1934  
1935 1935  
image-20220906100852-1.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +251.9 KB
Content
image-20220906101145-2.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +6.3 KB
Content
image-20220906101145-3.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +6.6 KB
Content
image-20220906101320-4.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +202.3 KB
Content
image-20220906101320-5.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +206.1 KB
Content
image-20220906101320-6.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +7.1 KB
Content
image-20220906102307-7.png
Author
... ... @@ -1,0 +1,1 @@
1 +XWiki.Bei
Size
... ... @@ -1,0 +1,1 @@
1 +7.3 KB
Content