Heltec STM32L151CCU6 + SX1276 LoRaWAN Node Ultra-low Power Support 2AA Lithium Sub Battery Power Supply Module COD

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ID: 1638100
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                    Heltec LoRa Node Products Difference Table:

                    “Heltec LoRa” product family already included follow options:
                    LoRa spread spectrum communication (node);
                    Battery powered;
                    Good RF circuit design and impedance matching.

                    Product Type① MCU FLASH Battery Battery Detect Vext③ Low Power④ Display
                    WiFi LoRa 32 Dev-Board ESP32 4MB Lithium② x x x OLED (128x64)
                    WiFi LoRa 32(V2)
                    (Product ID: 1639291)
                    Dev-Board ESP32 8MB Lithium② 800uA OLED (128x64)
                    Wireless Stick
                    (Product ID: 1639290)
                    Dev-Board ESP32 8MB Lithium② 800uA OLED (64x32)
                    Wireless Stick Lite
                    (Product ID: 1638098)
                    Dev-Board ESP32-PICO 4MB Lithium② 35uA x
                    Wireless Shell
                    (Product ID: 1638101)
                    Module ESP32-PICO 4MB x 10uA x
                    LoRa Kit 151
                    (Product ID: 1639289)
                    Dev-Board STM32L151CBU6 128kB Lithium x x 7uA x
                    LoRa Node 151
                     (This item)
                    Dev-Board STM32L151CCU6 256kB 1/2 AA Lithium chlorine sulfite battery 1.8uA x
                    Turtle Board
                    (Product ID: 1638099)
                    Dev-Board STM32L432KC 256kB AAA x 2 5uA x

                    ① – Type:
                    Dev-Board – Can be used directly;
                    Module – Only core function, need to cooperate with external PCB or circuit.
                    ② – Lithium: All lithium battery socket for Heltec boards is SH1.25-2;
                    ③ – Vext: 3.3V(500mA) output, for external devices (e.g. sensors) power supply, in deep sleep mode, Vext can be shut down via software;
                    ④ – Low Power: Products’ low power design, of Whole Circuit, the measured data are the current of the system during deep sleep.


                    -CE Certificate;
                    -Microprocessor: STM32L151CCU6(ARM® Cortex®-M3 32-bit RISC core,support DFU mode) , with LoRa® node chip SX1276/SX1278;
                    -Onboard user resources available: 256 Kbytes of Flash memory with ECC; 32 Kbytes of RAM; 8 Kbytes of true EEPROM with ECC; 128-byte backup register.
                    -Micro USB interface with a complete voltage regulator, ESD protection, short circuit protection, and other protection measures;
                    -1/2 AA battery shell, use 1/2 AA Lithium chlorine sulfite battery (this battery can’t charge, but onboard USB / battery power automatic switching allows connect USB when the battery is assembled);
                    -Reserve SMA antenna interface for LoRa use
                    -Download the firmware via DFU or ST-LINK;
                    -Provide complete LoRaWAN(ClassA/C) source code(support ABP and OTAA);
                    -With good RF circuit design and basic low-power design (sleep current: 1.8uA), it is convenient for IoT application vendors to quickly verify solutions and deploy applications;

                    Source Parameter
                    MCU STM32L151CCU6(Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3)
                    LoRa chip SX1276/SX1278
                    LoRa bands EU_433, CN_470_510, EU_863_870, US_902_928 four bands optional
                    LoRa maximum output power 18dB ± 2dB
                    Hardware Resource USART x 3; SPI x 2; I2C x 2; I2S x 2; USB 2.0 x 1
                    12 – bits ADC; 12 – bits DAC
                    DMA controller
                    38 general GPIO
                    Flash 256KB FLASH; 32KB SRAM; 8KB EEPROM; 128B BACKUP REGISTER
                    Interface Micro USB x 1; LoRa antenna(SMA) x 1
                    Size 56.6 x 24 x 20 mm
                    battery type 1/2 AA Lithium chlorine sulfite battery
                    Battery detection circuit
                    External device power control(Vext)
                    Low power design Deep Sleep: 2.5uA

                    Electrical characteristics Condition Minimum Typical Maximum
                    Power Supply USB powered(≥500mA) 4.7V 5V 6V 
                    Lithium powered(≥250mA) 3.3V 3.6V 4.2V
                    3.3V(pin)powered(≥150mA) 2.7V 3.3V 3.5V
                    5V(pin)powered(≥500mA) 4.7V 5V 6V
                    Power consumption(mA) LoRa 10dB emission   50mA  
                    LoRa 12dB emission   60mA  
                    LoRa 15dB emission   110mA  
                    LoRa 20dB emission   130mA  
                    Output 3.3V pin output     500mA
                    5V pin output (USB powered only)   Equal to input current  
                    External device power control (Vext 3.3V)     350mA

                    Package includes:

                    1 x Power Supply Module

                    File support:

                    LoRa Node 151 Example Code: 
                    LoRa Node 151 basic hardware test example (only hardware layer LoRa signal send and receive, need at least two board to test): https://docs.heltec.cn/download/LoRa_Node_151_basic_hardware_test.zip
                    LoRa Node 151 didn’t have a UART-USB bridge, users can print data via virtual serial port, here is the project package: https://docs.heltec.cn/download/L151_USB.zip
                    How to Download Firmware into LoRa Node 151: 
                    STM32 Cube Programmer: 
                    ST provided writing and verifying device memory through both the debug interface (JTAG and SWD) and the bootloader interface (UART, USB DFU, I2C, SPI, and CAN): www.st.com/stm32cubeprog
                    LoRa Node 151 Pinout Diagram: 
                    Summary of Common Problems: 
                    AutoCAD 2017 version drawding: docs.heltec.cn/download/LoRa_Node_151.dwg

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