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62	62	* [[10. ​Support>>path:#H10.A0200BSupport]]
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65	65	= 1. Introduction =
66	66
67	67	== 1.1 ​What is LoRaWAN Soil pH Sensor ==
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107	107	* IP68 rate for the Sensor Probe
108	108	* 8500mAh Battery for long term use
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	115	+
110	110	== 1.3 Probe Specification ==
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112	112
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127	127	* IP68 Protection
128	128	* Length: 3.5 meters
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	136	+
130	130	== 1.4 ​Applications ==
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132	132	* Smart Agriculture
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134	134	== 1.5 Pin mapping and power on ==
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136	136	[[image:1654592472094-134.png]]
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332	332
333		-
334	334	=== 2.3.7 Decode payload in The Things Network ===
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336	336	While using TTN network, you can add the payload format to decode the payload.
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545	545
546		-
547	547	== 2.8 Frequency Plans ==
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549	549	(((
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741	741	* Use the Join successful sub-band if the server doesn’t include sub-band info in the OTAA Join Accept message ( TTN v2 doesn't include)
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743	743
744		-
745		-
746	746	=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
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748	748	(((
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967	967	* Blink once when device transmit a packet.
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969	969
970		-
971	971	== 2.10 ​Firmware Change Log ==
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1057	1057	)))
1058	1058	* (((
1059	1059	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	1063	+)))
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1061	1061
1062		-
1063		-)))
1064	1064
1065	1065	== 3.2 Set Interrupt Mode ==
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1090	1090	Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1091	1091	)))
1092	1092
1093		-(((
1094		-
1095		-)))
1096		-
1097		-
1098		-
1099	1099	== 3.3 Calibrate Sensor ==
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1101	1101	Detail See [[Calibration Guide>>path:#H2.7Calibration]] for the user of 0x13 and 0x14 downlink commands
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1270	1270
1271	1271	=== ​4.3.2 Replace the battery ===
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1273		-(((
1274	1274	You can change the battery in the LSPH01.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won’t be voltage drop between battery and main board.
1275		-)))
1276	1276
1277		-(((
1278	1278	The default battery pack of LSPH01 includes a ER26500 plus super capacitor. If user can’t find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)
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1297	1297	(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
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1301	1301	In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LSPH01. LSPH01 will output system info once power on as below:
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1305	1305	[[image:1654593712276-618.png]]