Last modified by Mengting Qiu on 2024/04/30 14:27
<
From version < 40.1 >
edited by Edwin Chen
on 2022/05/22 23:56
To version < 18.1 >
edited by Edwin Chen
on 2022/05/15 12:38
>
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57 57  * ±2°C accuracy from -55°C to +125°C
58 58  * Operating Range: -55 °C ~~ 125 °C
59 59  
60 +
60 60  = Connect LHT65N to IoT Server =
61 61  
62 62  == How does LHT65N work? ==
... ... @@ -71,8 +71,9 @@
71 71  The LHT65N has two working modes:
72 72  
73 73  * **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
74 -* **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, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
75 +* **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, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode.
75 75  
77 +
76 76  The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
77 77  
78 78  [[image:image-20220515123819-1.png||height="379" width="317"]]
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82 82  |**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
83 83  |**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
84 84  
85 -== Example to join LoRaWAN network ==
86 86  
87 -(% class="wikigeneratedid" %)
88 -This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
89 89  
90 -(% class="wikigeneratedid" %)
91 -[[image:image-20220522232442-1.png||height="387" width="648"]]
92 -
93 -Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
94 -
95 -
96 -=== **Step 1**: Create Device n TTN ===
97 -
98 -Create a device in TTN V3 with the OTAA keys from LHT65N.
99 -
100 -Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
101 -
102 -[[image:image-20220522232812-2.png||height="219" width="279"]]
103 -
104 -User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
105 -
106 -Add APP EUI in the application.
107 -
108 -[[image:image-20220522232916-3.png]]
109 -
110 -
111 -[[image:image-20220522232932-4.png]]
112 -
113 -
114 -[[image:image-20220522232954-5.png]]
115 -
116 -Note: LHT65N use same payload as LHT65.
117 -
118 -[[image:image-20220522233026-6.png]]
119 -
120 -
121 -Input APP EUI,  APP KEY and DEV EUI:
122 -
123 -[[image:image-20220522233118-7.png]]
124 -
125 -
126 -=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
127 -
128 -Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
129 -
130 -[[image:image-20220522233300-8.png]]
131 -
132 -
133 -== Uplink Payload: ==
134 -
135 -The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and(% class="mark" %) every 20 minutes(%%) send one uplink by default.
136 -
137 -After each uplink, the (% class="mark" %)BLUE LED(%%) will blink once.
138 -
139 -
140 -(% style="width:572px" %)
141 -|(% style="width:106px" %)**Size(bytes)**|(% style="width:71px" %)**2**|(% style="width:128px" %)**2**|(% style="width:103px" %)**2**|(% style="width:72px" %)**1**|(% style="width:89px" %)**4**
142 -|(% style="width:106px" %)**Value**|(% style="width:71px" %)[[BAT>>path:#Battery]]|(% style="width:128px" %)(((
143 -[[Built-In>>path:#SHT20_Temperature]]
144 -
145 -[[Temperature>>path:#SHT20_Temperature]]
146 -)))|(% style="width:103px" %)(((
147 -[[Built-in>>path:#SHT20_Humidity]]
148 -
149 -[[Humidity>>path:#SHT20_Humidity]]
150 -)))|(% style="width:72px" %)[[Ext>>path:#Extension_Sensor]] #|(% style="width:89px" %)[[Ext value>>path:#Extension_sensor_value]]
151 -
152 -* The First 6 bytes: has fix meanings for every LHT65N.
153 -* The 7th byte (EXT #): defines the external sensor model.
154 -* The 8^^th^^ ~~ 11^^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.)
155 -
156 -
157 -=== Decoder in TTN V3 ===
158 -
159 -When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
160 -
161 -Below is the position to put the decoder and LHT65N decoder can be download from here:
162 -
163 -
164 -[[image:image-20220522234118-10.png]]
165 -
166 -
167 -== LED Indicator ==
168 -
169 -The LHT65N has a triple color LED which for easy shows different stage.
170 -
171 -While pressing ACT button, the LED will work as per LED status with ACT button.
172 -
173 -In a normal working state:
174 -
175 -* For each uplink, the BLUE LED or RED LED will blink once.
176 -* BLUE LED when an external sensor is connected
177 -* RED LED when an external sensor is not connected
178 -* For each success downlink, the PURPLE LED will blink once
179 -
180 -----
181 -
182 -== Installation ==
183 -
184 -[[image:image-20220516231650-1.png||height="632" width="620"]]
185 -
186 -
187 -
188 -
189 189  = Sensors & Accessories =
190 190  
191 191  == E3 Temperature Probe ==
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