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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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128	128	* Length: 3.5 meters
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130	130
131		-
132		-
133	133	== 1.4 ​Applications ==
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135	135	* Smart Agriculture
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137	137
138		-
139		-
140	140	== 1.5 Pin mapping and power on ==
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142	142	[[image:1654592472094-134.png]]
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338	338
339		-
340	340	=== 2.3.7 Decode payload in The Things Network ===
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342	342	While using TTN network, you can add the payload format to decode the payload.
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551	551
552		-
553	553	== 2.8 Frequency Plans ==
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555	555	(((
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747	747	* 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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749	749
750		-
751		-
752	752	=== 2.8.5 AS920-923 & AS923-925 (AS923) ===
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754	754	(((
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973	973	* Blink once when device transmit a packet.
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975	975
976		-
977	977	== 2.10 ​Firmware Change Log ==
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1063	1063	)))
1064	1064	* (((
1065	1065	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
	1063	+)))
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1067	1067
1068		-
1069		-)))
1070	1070
1071	1071	== 3.2 Set Interrupt Mode ==
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1096	1096	Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1097	1097	)))
1098	1098
1099		-(((
1100		-
1101		-)))
1102		-
1103		-
1104		-
1105	1105	== 3.3 Calibrate Sensor ==
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1107	1107	Detail See [[Calibration Guide>>path:#H2.7Calibration]] for the user of 0x13 and 0x14 downlink commands
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1276	1276
1277	1277	=== ​4.3.2 Replace the battery ===
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1279		-(((
1280	1280	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.
1281		-)))
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1283		-(((
1284	1284	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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1303	1303	(% style="background-color:yellow" %)** USB TTL RXD  <~-~-~-~-> UART_TXD**
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1307	1307	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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1311	1311	[[image:1654593712276-618.png]]