Changes for page SN50v3-LB/LS -- LoRaWAN Sensor Node User Manual
Last modified by Bei Jinggeng on 2025/01/10 15:51
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... ... @@ -41,6 +41,8 @@ 41 41 * Downlink to change configure 42 42 * 8500mAh Battery for long term use 43 43 44 + 45 + 44 44 == 1.3 Specification == 45 45 46 46 ... ... @@ -78,6 +78,8 @@ 78 78 * Sleep Mode: 5uA @ 3.3v 79 79 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm 80 80 83 + 84 + 81 81 == 1.4 Sleep mode and working mode == 82 82 83 83 ... ... @@ -105,6 +105,8 @@ 105 105 ))) 106 106 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode. 107 107 112 + 113 + 108 108 == 1.6 BLE connection == 109 109 110 110 ... ... @@ -290,6 +290,8 @@ 290 290 1. All modes share the same Payload Explanation from HERE. 291 291 1. By default, the device will send an uplink message every 20 minutes. 292 292 299 + 300 + 293 293 ==== 2.3.2.1 MOD~=1 (Default Mode) ==== 294 294 295 295 ... ... @@ -611,7 +611,6 @@ 611 611 612 612 [[image:image-20230512180718-8.png||height="538" width="647"]] 613 613 614 - 615 615 (% style="color:blue" %)**Example**: 616 616 617 617 If payload is: 0105H: (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree ... ... @@ -623,7 +623,6 @@ 623 623 624 624 ==== 2.3.3.3 Digital Input ==== 625 625 626 - 627 627 The digital input for pin PB15, 628 628 629 629 * When PB15 is high, the bit 1 of payload byte 6 is 1. ... ... @@ -633,14 +633,11 @@ 633 633 ((( 634 634 When the digital interrupt pin is set to AT+INTMODx=0, this pin is used as a digital input pin. 635 635 636 -(% style="color:red" %)**Note: The maximum voltage input supports 3.6V.** 637 - 638 - 642 +(% style="color:red" %)**Note:**The maximum voltage input supports 3.6V. 639 639 ))) 640 640 641 641 ==== 2.3.3.4 Analogue Digital Converter (ADC) ==== 642 642 643 - 644 644 The measuring range of the ADC is only about 0V to 1.1V The voltage resolution is about 0.24mv. 645 645 646 646 When the measured output voltage of the sensor is not within the range of 0V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series. ... ... @@ -647,12 +647,11 @@ 647 647 648 648 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220628150112-1.png?width=285&height=241&rev=1.1||alt="image-20220628150112-1.png" height="241" width="285"]] 649 649 650 -(% style="color:red" %)**Note: **653 +(% style="color:red" %)**Note:**If the ADC type sensor needs to be powered by SN50_v3, it is recommended to use +5V to control its switch.Only sensors with low power consumption can be powered with VDD. 651 651 652 652 653 653 ==== 2.3.3.5 Digital Interrupt ==== 654 654 655 - 656 656 Digital Interrupt refers to pin PA8, and there are different trigger methods. When there is a trigger, the SN50v3 will send a packet to the server. 657 657 658 658 (% style="color:blue" %)** Interrupt connection method:** ... ... @@ -659,7 +659,6 @@ 659 659 660 660 [[image:image-20230513105351-5.png||height="147" width="485"]] 661 661 662 - 663 663 (% style="color:blue" %)**Example to use with door sensor :** 664 664 665 665 The door sensor is shown at right. It is a two wire magnetic contact switch used for detecting the open/close status of doors or windows. ... ... @@ -668,9 +668,8 @@ 668 668 669 669 When the two pieces are close to each other, the 2 wire output will be short or open (depending on the type), while if the two pieces are away from each other, the 2 wire output will be the opposite status. So we can use SN50_v3 interrupt interface to detect the status for the door or window. 670 670 672 +(% style="color:blue" %)** Below is the installation example:** 671 671 672 -(% style="color:blue" %)**Below is the installation example:** 673 - 674 674 Fix one piece of the magnetic sensor to the door and connect the two pins to SN50_v3 as follows: 675 675 676 676 * ((( ... ... @@ -682,7 +682,7 @@ 682 682 683 683 Install the other piece to the door. Find a place where the two pieces will be close to each other when the door is closed. For this particular magnetic sensor, when the door is closed, the output will be short, and PA8 will be at the VCC voltage. 684 684 685 -Door sensors have two types: (% style="color:blue" %)** NC (Normal close)**(%%)and(% style="color:blue" %)**NO (normal open)**(%%). The connection for both type sensors are the same. But the decoding for payload are reverse, user need to modify this in the IoT Server decoder.685 +Door sensors have two types: ** NC (Normal close)** and **NO (normal open)**. The connection for both type sensors are the same. But the decoding for payload are reverse, user need to modify this in the IoT Server decoder. 686 686 687 687 When door sensor is shorted, there will extra power consumption in the circuit, the extra current is 3v3/R14 = 3v3/1Mohm = 3uA which can be ignored. 688 688 ... ... @@ -700,7 +700,6 @@ 700 700 701 701 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379339508-835.png?rev=1.1||alt="1656379339508-835.png"]] 702 702 703 - 704 704 In MOD=1, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below: 705 705 706 706 door= (bytes[6] & 0x80)? "CLOSE":"OPEN"; ... ... @@ -708,7 +708,6 @@ 708 708 709 709 ==== 2.3.3.6 I2C Interface (SHT20 & SHT31) ==== 710 710 711 - 712 712 The SDA and SCK are I2C interface lines. You can use these to connect to an I2C device and get the sensor data. 713 713 714 714 We have made an example to show how to use the I2C interface to connect to the SHT20/ SHT31 Temperature and Humidity Sensor. ... ... @@ -737,13 +737,11 @@ 737 737 738 738 ==== 2.3.3.7 Distance Reading ==== 739 739 740 - 741 741 Refer [[Ultrasonic Sensor section>>||anchor="H2.3.3.8UltrasonicSensor"]]. 742 742 743 743 744 744 ==== 2.3.3.8 Ultrasonic Sensor ==== 745 745 746 - 747 747 This Fundamental Principles of this sensor can be found at this link: [[https:~~/~~/wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU~~_~~__SEN0208>>url:https://wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU___SEN0208]] 748 748 749 749 The SN50_v3 detects the pulse width of the sensor and converts it to mm output. The accuracy will be within 1 centimeter. The usable range (the distance between the ultrasonic probe and the measured object) is between 24cm and 600cm. ... ... @@ -754,7 +754,6 @@ 754 754 755 755 [[image:image-20230512173903-6.png||height="596" width="715"]] 756 756 757 - 758 758 Connect to the SN50_v3 and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT). 759 759 760 760 The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value. ... ... @@ -764,15 +764,14 @@ 764 764 Distance: Read: 0C2D(Hex) = 3117(D) Value: 3117 mm=311.7 cm 765 765 766 766 762 + 767 767 ==== 2.3.3.9 Battery Output - BAT pin ==== 768 768 769 - 770 770 The BAT pin of SN50v3 is connected to the Battery directly. If users want to use BAT pin to power an external sensor. User need to make sure the external sensor is of low power consumption. Because the BAT pin is always open. If the external sensor is of high power consumption. the battery of SN50v3-LB will run out very soon. 771 771 772 772 773 773 ==== 2.3.3.10 +5V Output ==== 774 774 775 - 776 776 SN50v3 will enable +5V output before all sampling and disable the +5v after all sampling. 777 777 778 778 The 5V output time can be controlled by AT Command. ... ... @@ -784,20 +784,18 @@ 784 784 By default the AT+5VT=500. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor. 785 785 786 786 781 + 787 787 ==== 2.3.3.11 BH1750 Illumination Sensor ==== 788 788 789 - 790 790 MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes. 791 791 792 792 [[image:image-20230512172447-4.png||height="416" width="712"]] 793 793 794 - 795 795 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220628110012-12.png?rev=1.1||alt="image-20220628110012-12.png" height="361" width="953"]] 796 796 797 797 798 798 ==== 2.3.3.12 Working MOD ==== 799 799 800 - 801 801 The working MOD info is contained in the Digital in & Digital Interrupt byte (7^^th^^ Byte). 802 802 803 803 User can use the 3^^rd^^ ~~ 7^^th^^ bit of this byte to see the working mod: ... ... @@ -815,7 +815,6 @@ 815 815 * 8: MOD9 816 816 817 817 818 - 819 819 == 2.4 Payload Decoder file == 820 820 821 821 ... ... @@ -826,6 +826,7 @@ 826 826 [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/SN50_v3-LB>>https://github.com/dragino/dragino-end-node-decoder/tree/main/SN50_v3-LB]] 827 827 828 828 820 + 829 829 == 2.5 Frequency Plans == 830 830 831 831 ... ... @@ -845,8 +845,6 @@ 845 845 * AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]]. 846 846 * LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section. 847 847 848 - 849 - 850 850 == 3.2 General Commands == 851 851 852 852 ... ... @@ -868,7 +868,6 @@ 868 868 869 869 === 3.3.1 Set Transmit Interval Time === 870 870 871 - 872 872 Feature: Change LoRaWAN End Node Transmit Interval. 873 873 874 874 (% style="color:blue" %)**AT Command: AT+TDC** ... ... @@ -894,6 +894,7 @@ 894 894 * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds 895 895 * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds 896 896 886 + 897 897 === 3.3.2 Get Device Status === 898 898 899 899 Send a LoRaWAN downlink to ask the device to send its status. ... ... @@ -941,6 +941,7 @@ 941 941 * Example 3: Downlink Payload: 06000102 **~-~-->** AT+INTMOD2=2 942 942 * Example 4: Downlink Payload: 06000201 **~-~-->** AT+INTMOD3=1 943 943 934 + 944 944 === 3.3.4 Set Power Output Duration === 945 945 946 946 Control the output duration 5V . Before each sampling, device will ... ... @@ -972,6 +972,7 @@ 972 972 * Example 1: Downlink Payload: 070000 **~-~-->** AT+5VT=0 973 973 * Example 2: Downlink Payload: 0701F4 **~-~-->** AT+5VT=500 974 974 966 + 975 975 === 3.3.5 Set Weighing parameters === 976 976 977 977 Feature: Working mode 5 is effective, weight initialization and weight factor setting of HX711. ... ... @@ -996,6 +996,7 @@ 996 996 * Example 2: Downlink Payload: 08020FA3 **~-~-->** AT+WEIGAP=400.3 997 997 * Example 3: Downlink Payload: 08020FA0 **~-~-->** AT+WEIGAP=400.0 998 998 991 + 999 999 === 3.3.6 Set Digital pulse count value === 1000 1000 1001 1001 Feature: Set the pulse count value. ... ... @@ -1018,6 +1018,7 @@ 1018 1018 * Example 1: Downlink Payload: 090100000000 **~-~-->** AT+SETCNT=1,0 1019 1019 * Example 2: Downlink Payload: 0902000003E8 **~-~-->** AT+SETCNT=2,1000 1020 1020 1014 + 1021 1021 === 3.3.7 Set Workmode === 1022 1022 1023 1023 Feature: Switch working mode. ... ... @@ -1041,6 +1041,7 @@ 1041 1041 * Example 1: Downlink Payload: 0A01 **~-~-->** AT+MOD=1 1042 1042 * Example 2: Downlink Payload: 0A04 **~-~-->** AT+MOD=4 1043 1043 1038 + 1044 1044 = 4. Battery & Power Consumption = 1045 1045 1046 1046