External 3.7V LiPo (SH1.25 connector)

2 devices
Related:105mAh1100mAh1200mAh1400mAh1500mAh18350 Li-Ion (user-supplied)18650 Li-Ion (external)18650/21700 (user-supplied)2000mAh200mAh2400mAh3000mAh

Heltec LoRa Kit 151

Heltec LoRa Kit 151

Ultra-low-power LoRaWAN development kit based on STM32L151CBU6 ARM Cortex-M3 MCU and Semtech SX1278 LoRa transceiver, with 6uA deep sleep current, integrated battery management, and CE certification.

ARM Cortex-M3 single-core @ 32MHz, ultra-low-power16KB SRAM128KB
Lorawan NodeEnvironmental MonitoringIrrigation ControlSmart Agriculture
~$14View

Heltec ESP32-C3 Arduino Development Board

Dev Board
Heltec ESP32-C3 Arduino Development Board

Ultra-compact RISC-V development board with ESP32-C3FN4, WiFi, BLE 5.0, integrated battery management, and USB-C — ideal for low-power IoT sensor nodes and wireless prototyping.

RISC-V 32-bit single-core @ 160MHz, hardware crypto (AES/SHA/RSA/ECC)400KB SRAM4MB (SiP)WiFi 802.11 b/g/nBLE BLE 5.0
iotSmart HomeHome AutomationEnvironmental Monitoring
~$5View

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Environmental Monitoring