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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... ... @@ -737,11 +737,13 @@ 737 737 738 738 ==== 2.3.3.7 Distance Reading ==== 739 739 740 + 740 740 Refer [[Ultrasonic Sensor section>>||anchor="H2.3.3.8UltrasonicSensor"]]. 741 741 742 742 743 743 ==== 2.3.3.8 Ultrasonic Sensor ==== 744 744 746 + 745 745 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]] 746 746 747 747 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. ... ... @@ -752,6 +752,7 @@ 752 752 753 753 [[image:image-20230512173903-6.png||height="596" width="715"]] 754 754 757 + 755 755 Connect to the SN50_v3 and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT). 756 756 757 757 The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value. ... ... @@ -764,11 +764,13 @@ 764 764 765 765 ==== 2.3.3.9 Battery Output - BAT pin ==== 766 766 770 + 767 767 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. 768 768 769 769 770 770 ==== 2.3.3.10 +5V Output ==== 771 771 776 + 772 772 SN50v3 will enable +5V output before all sampling and disable the +5v after all sampling. 773 773 774 774 The 5V output time can be controlled by AT Command. ... ... @@ -783,6 +783,7 @@ 783 783 784 784 ==== 2.3.3.11 BH1750 Illumination Sensor ==== 785 785 791 + 786 786 MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes. 787 787 788 788 [[image:image-20230512172447-4.png||height="416" width="712"]]