Heltec WiFi LoRa 32

About

This device is similar to the Heltec WiFi Kit 32 (ESP32 mit kleinem OLED) but for doing LoRa, it also carries a Semtech SX127x chip.

Technical Specification

source parameter
MCU ESP32 ( 240MHz Tensilica LX6 dual-core + 1 ULP 600 DMIPS 520KB SRAM Wi-Fi dual mode Bluetooth)
LoRa chip SX1276 (868 and 915 version) SX1278 (433 and 470 version)
LoRa bands EU_433 CN_470_510 EU_863_870 US_902_928 four bands optional
LoRa maximum output power 18dB ± 2dB
Hardware resources UART x 3 SPI x 2 I2C x 2 I2S x 1 12 – bits ADC 8 – bits DAC 29 general GPIO
Display 0.96 inch 128*64 OLED display
FLASH 8MB(64M-bits) SPI FLASH
Interface Micro USB x 1 LoRa antenna interface(IPEX) x 1
Size 50.2 x 25.5 x 9.74 mm
USB to UART Bridge CP2102
Battery Type 3.7V Lithium(SH1.25 x 2)
Battery detection circuit
External device power control(Vext)
Low power design Deep Sleep 800uA

Similar to
Heltec WiFi Kit 32 (ESP32 mit kleinem OLED) with Lora.

Links

Docs/Ressources

Schematics

Pinouts

(source Heltec)