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Dec 20, 2021 - C++
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heltec
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As the primary I2C bus is used by the internal OLED display, you have to use the second I2C interface for any sensors using the I2C interface.
i2c esp32 air-quality oled i2c-sensors i2c-display oled-display-ssd1306 ccs811 heltec heltec-wifi-lora-32-v2
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Jan 20, 2026 - C++
Some example projects with Heltec boards
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Oct 8, 2022 - C++
Sensor node data transmitter using Heltec CubeCell AB01 LoRa module
codec lora-application heltec multi-sensor payload-decoder payload-encoder sensor-nodes platformio-arduino interrupt-driven
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Jan 4, 2026 - C++
Official Mesh Dualboot. The approved boot selector for ESP32-S3 devices; pick between Official Mesh or the alternative firmware of your choice at power-on, no reflash.
firmware esp32 bootloader lora heltec lilygo mesh-networking meshtastic esp32-s3 meshcore official-mesh
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May 11, 2026 - C++
Gateway modulare ESP32-S3 (Heltec LoRa 32 V3/V4) che riceve sensori meteo 868 MHz (Fine Offset/Ecowitt, LaCrosse, Bresser) e li ritrasmette su Meshtastic, con OLED, grafici 24h e bollettini automatici.
iot esp32 platformio lora weather-station 868mhz lacrosse heltec nrf52840 bresser sx1262 ecowitt meshtastic esp32-s3 wio-sx1262 fineoffset
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Aug 18, 2026 - C++
Firmware and PC logger for a two-node river level monitoring system using Heltec WiFi LoRa 32 V4 modules and a JSN-SR04T ultrasonic sensor. Sensor node runs on battery/solar with deep sleep between LoRa transmissions. Gateway node displays live readings on OLED and streams JSON over USB serial.
iot arduino esp32 platformio lora ultrasonic-sensor water-level river deep-sleep 915mhz flood-monitoring radiolab heltec sx1262
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Mar 6, 2026 - C++
OpenWeatherMap Heltec WiFi Kit V2
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Apr 4, 2023 - C++
Ultrasonic distance measuring using esp32 with display
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Jul 30, 2023 - C++
Estación metereológica DIY con comunicaciones LoRaWAN TTN
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Oct 23, 2023 - C++
Off-grid Meshtastic camera node: Heltec V3 + XIAO ESP32-S3 Sense with motion alerts over LoRa, snap-to-SD, and a Home Assistant MQTT bridge
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Jun 19, 2026 - C++
Wifi & BLE driven passenger flow metering with cheap ESP32 boards
mqtt iot arduino esp32 gps wifi platformio lora gps-tracker lorawan thethingsnetwork ttn lopy dcf77 pycom bme680 ttgo heltec macaddr helium-network
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Feb 3, 2025 - C++
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