The latest product from the company specifically targets smart farming/gardening as TTGO T-Higrow embeds either DHT11 temperature and humidity sensor or BME280 temperature, humidity, and barometric sensor to report soil temperature and moisture over Bluetooth or WiFi. It can also come as a kit with a battery and a 3D printed enclosure.
- SoC – Espressif Systems ESP32 dual-core LX6 processor @ up to 240 MHz with 520 LB SRAM, Wi-Fi & Bluetooth
- Storage – 4MB QSPI flash
- 2.4 GHz 802.11b/g/n WiFi 4 up to 150 Mbps
- Bluetooth 4.2 BR/EDR and BLE
- Option 1 – DHT11 temperature and humidity sensor
- Option 2 – BME280 temperature, humidity, and barometric sensor
- Expansion –
- 2x 12-pin through holes with UART, SPI, SDIO, I2C, PWM, I2S, IR, GPIOs, capacitive touch sensing, ADC, ADC
- 4-pin I2C connector for external waterproof sensors
- Debugging – CP2104 USB to TTL chip
- Misc – 1x user button, 1x wake up button, 40MHz crystal oscillator
- Power Supply
- 5V/1A via USB-C port
- 2-pin header for 3.7 Lithium battery; TP4054 charging chip
- Power Consumption – Operating: about 150 mA; sleep current: 220 uA
- Temperature Range – -40°C to +85°C
- Dimensions – 155 x 35 x 8.2 mm
- Weight – 13.65g
The company provides Arduino sample code showing sensor data in a web interface, firmware file, PDF schematics, 3D print files, and other documentation on Github.
The board ships with unsoldered headers and the battery cable, but there’s also a kit with the DHT11 or BME280 version of TTGO T-Higrow that adds a 3D printed case and a 200 mAh battery.
LilyGO sells TTGO Higrow boards and kits for $9.92 to $16.23 on Aliexpress.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.