LoRa Node 151

Description

In order to meet the user’s requirements for Ultra-Low-Power and standard LoRaWAN protocol, we designed this product. On the basis of STM32L151CBU6MCU and SX1278 LoRa chip(433、470MHz), the low power current can reach to 6uA.

Overview

• 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;

Technical parameters:

Docs&Resource

• LoRa Kit 151 Example Code
• All the examples shown here is built by Keil MDK V5.26
• LoRaWAN example is restricted technical data, it will become downloadable after purchase, you can find it on your account page (Didn’t buy this product from our website or from a reseller? You can contact your provider or Email us):
• LoRa Kit 151 Pingpang test example code (need two LoRa Kit 151 to test): https://heltec.org/wp-content/uploads/2019/07/Kit_151_PingPang.zip
• LoRa Kit 151 Schematic diagram
• https://resource.heltec.cn/download/LoRa_Kit_151/LoRa_Kit_151_sch_diagram.PDF
• Heltec LoRa Node Products Difference Table (Product Selection Table)
• https://docs.heltec.cn/#/en/products/lora/lora_node/heltec_lora_node_list_eu
• Summary of Common Problems
• http://www.heltec.cn/summary-of-common-problems-in-wifi-kit-series-continuous-update/?lang=en
• More Technical Data
• The more technical information will be sent to you by mail after purchase.
• No email received after buying? Please contact us via this email: support@heltec.cn

Test Info

                                                                                                        LoRa 868-915MHz  RF power output

                                                                                                              LoRa 868MHz  RF power output

                                                                                                               LoRa 470MHz  RF power output

                                                                                                              LoRa 433MHz  RF power output