# Heltec HT-M00 Dual Channel LoRa Gateway > A compact, low-cost dual-channel LoRaWAN gateway based on ESP32 and dual SX1276 transceivers, designed for indoor LoRa coverage of 1500-2000 square meters with support for SF7-SF12 spreading factors and LoRaWAN Class A/C protocols. ## Quick Facts - **Brand:** Heltec Automation - **Board Type:** lora-gateway - **Price:** ~$39 - **CPU:** Xtensa LX6 dual-core @ 240MHz, FPU, hardware crypto (AES/SHA) - **CPU Architecture:** Xtensa LX6 - **CPU Cores:** 2 - **RAM:** 520KB SRAM - **Flash:** 4MB - **USB:** USB Type-C (via CP2102) - **Power:** 5V via USB Type-C - **Operating Voltage:** 3.3V - **Operating Temp:** -20°C to +70°C - **Dimensions:** 30 × 76 × 14mm - **Weight:** 90g - **Antenna:** Built-in PCB antenna - **SD Card:** No - **Display:** 0.96" OLED 128×64 ## Connectivity - **Wifi:** 802.11 b/g/n - **Bluetooth:** Bluetooth 4.2, BLE - **Lora:** 2x SX1276 (433/868/915MHz) ## Certifications CE ## Use Cases - lorawan-gateway - lora-mesh-networking - environmental-monitoring - smart-agriculture - long-range-sensor-network ## Components - **ESP32-D0WDQ6** (mcu): Xtensa LX6 dual-core processor at 240MHz with 520KB SRAM, WiFi 802.11 b/g/n, Bluetooth 4.2 + BLE, hardware crypto acceleration, and deep sleep support. Drives both SX1276 LoRa transceivers and the OLED display. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32_datasheet_en.pdf&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) - **SX1276** (radio): Two Semtech SX1276 LoRa transceivers providing dual-channel reception with -110dBm sensitivity at 300bps and up to +18dBm TX power. Supports 137-1020MHz frequency range with LoRa modulation (SF7-SF12) and FSK modulation. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.semtech.com%2Fproducts%2Fwireless-rf%2Flora-connect%2Fsx1276&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) - **SSD1306** (display-driver): 128x64 monochrome OLED display driver connected via I2C, showing real-time gateway status including upstream/downstream packet counts and channel activity. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.datasheethub.com%2Fssd1306-128x64-mono-0-96-inch-i2c-oled-display%2F&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) - **CP2102** (usb-uart): Silicon Labs CP2102 USB-to-UART bridge providing serial communication for firmware programming, debug output, and chip ID reading at 115200 baud. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.silabs.com%2Finterface%2Fusb-bridges%2Fclassic%2Fdevice.cp2102&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) ## Protocols - **SPI** (VSPI): SCK: GPIO18, MISO: GPIO19, MOSI: GPIO23 - **I2C**: SDA: GPIO4, SCL: GPIO15 - **UART** (UART0): TX: GPIO1, RX: GPIO3 ## GPIO Map | Pin | Name | Type | Functions | |-----|------|------|-----------| | GPIO1 | UART0 TX | UART | digital-output | | GPIO3 | UART0 RX | UART | digital-input | | GPIO4 | I2C SDA (OLED) | I2C | digital-input, digital-output | | GPIO15 | I2C SCL (OLED) | I2C | digital-input, digital-output, strapping | | GPIO18 | SPI SCK (LoRa) | SPI | digital-output | | GPIO19 | SPI MISO (LoRa) | SPI | digital-input | | GPIO23 | SPI MOSI (LoRa) | SPI | digital-output | | GPIO16 | OLED RST | — | digital-output | | GPIO0 | CFG Button | — | digital-input, strapping | | GPIO2 | STA Button | — | digital-input, strapping | ## Description ## Overview The Heltec HT-M00 is a compact, affordable dual-channel LoRa gateway designed to bring LoRaWAN connectivity to indoor environments covering 1500 to 2000 square meters. Built around an ESP32 microcontroller driving two Semtech SX1276 LoRa transceivers, the gateway uses a software-based baseband mixer to simultaneously monitor two channels across spreading factors SF7 through SF12 at 125KHz bandwidth. This makes it an ideal entry point for testing LoRaWAN deployments, prototyping IoT sensor networks, or extending coverage in areas not reached by full SX1301-based gateways. The HT-M00 supports LoRaWAN protocol 1.0.2 with Class A and Class C device support, and can connect to popular LoRa network servers including The Things Network (TTN) and ChirpStack. Configuration is handled through a built-in WiFi access point and web interface, where users can set channel frequencies, spreading factor ranges, server addresses, and other gateway parameters. The onboard 0.96-inch OLED display provides real-time monitoring of upstream and downstream packet activity. Powered via USB Type-C at 5V, the gateway features a wall-mountable form factor measuring just 30 x 76 x 14mm and weighing 90g. It includes built-in LoRa antennas, CE certification, and supports multi-band operation across 433MHz, 470-510MHz, 863-870MHz, and 902-928MHz frequency plans. The ESP32 base allows advanced users to develop custom firmware using the Arduino framework, with CP2102 USB-serial bridge providing programming and debug access. ## Where to Buy - [Heltec Store](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org%2Fproject%2Fht-m00%2F&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) — 39.00 - [Amazon](https://openhardware.directory/r?to=https%3A%2F%2Fwww.amazon.com%2FHeltec-Channel-Gateway-Support-Standard%2Fdp%2FB08JCFMH41&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) — 39.00 - [MakerFocus](https://openhardware.directory/r?to=https%3A%2F%2Fwww.makerfocus.com%2Fproducts%2Florawan-lora-gateway&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) — 39.00 ## Resources - [product](https://openhardware.directory/r?to=https%3A%2F%2Fheltec.org%2Fproject%2Fht-m00%2F&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) - [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FHelTecAutomation%2FHeltecDocs&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) - [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.heltec.org%2Fdocs%2Fdevices%2Florawan-application%2Flora-gateway%2Fht-m00%2Fquick_start&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) - [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fresource.heltec.cn%2Fdownload%2FHT-M00%2FM00.pdf&ref=openhardware.directory&product=heltec-ht-m00&source=md-export) ## Tags `lora`, `lorawan`, `gateway`, `esp32`, `sx1276`, `iot`, `heltec` ## Images ![Heltec HT-M00 Dual Channel LoRa Gateway](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-ht-m00/98d60900c0d7.png) ![Heltec HT-M00 Dual Channel LoRa Gateway](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-ht-m00/d37285d6996e.png) ![Heltec HT-M00 Dual Channel LoRa Gateway](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-ht-m00/46b1c1c0aa5c.jpg) ![Heltec HT-M00 Dual Channel LoRa Gateway](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-ht-m00/fcc14d1af1c4.jpg) ![Heltec HT-M00 Dual Channel LoRa Gateway](https://nbg1.your-objectstorage.com/openhardware-directory/entities/heltec-ht-m00/2313f73e4696.jpg) --- [View full device page](https://openhardware.directory/devices/heltec-ht-m00)