Heltec LoRa ESP32 OLED Display IoT Board with WiFi & Bluetooth
Heltec LoRa ESP32 OLED Display IoT Development Board (WiFi/Bluetooth)
The Heltec LoRa ESP32 board combines an ESP32 microcontroller with WiFi and Bluetooth, a Semtech SX1276 LoRa transceiver, and a 0.96-inch 128x64 OLED display. It’s ideal for long-range, low-power IoT applications such as sensor networks, asset tracking, and smart agriculture. The integrated display simplifies debugging and real-time data monitoring.
Key Specifications
| Specification | Value |
|---|---|
| Microcontroller | ESP32-D0WDQ6, dual-core Xtensa LX6 |
| LoRa Transceiver | Semtech SX1276/78 (868/915 MHz) |
| Display | 0.96" OLED, 128×64 pixels, I2C |
| Wireless | WiFi 802.11 b/g/n, Bluetooth 4.2 BLE |
| Memory | 4 MB Flash, 520 KB SRAM |
| Operating Voltage | 3.3V (5V via USB, 3.7V LiPo) |
What You Can Build With This
- Remote weather station with LoRa data uplink
- GPS tracker displaying coordinates on the OLED
- Mesh network sensor nodes for precision agriculture
- Long-range Bluetooth-to-LoRa gateway
Compatibility
Works with Arduino IDE, MicroPython, and ESP-IDF. Fully compatible with any 3.3V logic sensors and modules. Breadboard-friendly pin headers. Commonly paired with DHT22, GPS modules, and soil moisture sensors.
Wiring Notes
Connect a 3.7V LiPo battery to the JST connector for portable use; the onboard charger handles USB charging. Always attach the LoRa antenna before powering. LoRa uses SPI (SS=18, SCK=5, MOSI=27, MISO=19) and OLED uses I2C (SDA=4, SCL=15). Avoid hot-plugging peripherals.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino IDE?
Yes, the Heltec board is fully supported via the ESP32 board manager. Install the Heltec ESP32 library for LoRa and OLED functions.
What LoRa frequency does this board support?
This variant supports the 868/915 MHz band, suitable for India and most regions. Please confirm your local regulations before deployment.
Does it include the antenna?
Yes, a helical antenna is included. For longer range, an external antenna can be attached via the U.FL connector.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items