Devicter Sensor Node V4 (ATmega 328)

The DevDuino Sensor Node v4 is a sleek and compact Arduino-compatible microcontroller. It's a perfect choice for building wireless networks using the nRF24L01+ transceiver. You can effortlessly connect various sensors or actuators to this platform and create your own remote monitoring or controlling system. Unlike previous versions (1, 2, 3), it comes with a built-in temperature and humidity sensor. **Features** - Arduino-compatible architecture for easy development. - Clock frequency of 16MHz, which can be reduced to 8MHz to save energy. - Integrated HTU21D temperature & humidity sensor with a wide range (-40 °C to +125 °C) and high accuracy (± 2 °C for temperature and ± 2% for relative humidity). - ISP programming interface (recommended) and serial programming interface. - Built-in clock button and a user-configurable green LED. - 3 GROVE-compatible connectors (I2C, Analog, Digital) for easy expansion. - Powered by one CR123A element (not included). - Compact dimensions of 30 x 65 mm. **Partlist** - 1 piece of DevDuino Sensor Node V4. - 1 piece of nRF24L01+ Module. **Documentation** Visit the wiki page for more details. Your help in improving our documentation by adding more descriptions or demo code is highly appreciated. For technical support, post your questions on Elecrow's blog.

Using the DevDuino Sensor Node V4 is quite simple. First, make sure you have the nRF24L01+ module ready and attach it to the node. If you want to use other sensors or actuators, connect them through the GROVE-compatible connectors. When programming, you can choose the ISP programming interface, which is recommended, or the serial programming interface. Keep in mind that the power source, a CR123A element, is not included. So, you'll need to get one and install it to power the device. The clock frequency can be adjusted. If you want to save energy, reduce it from 16MHz to 8MHz. For maintenance, keep the device in a dry and clean place. Avoid exposing it to extreme temperatures or humidity. If you have any questions, don't hesitate to visit the wiki page or post on Elecrow's blog for support.