Hiroshi Nakajima has developed a versatile High-resolution Voltage-Current Digital Logger, designed to measure power, voltage, and current in a range of devices like PCs and smartphones. This tool is especially adept in handling measurements from 0 to 85V DC. One of its standout features is the ability to send collected data directly to an InfuxDB server, allowing for real-time monitoring through a dashboard. The logger's adaptability is further enhanced by its compatibility with various types of adapters, ranging from USB-TypeC to Type-A/B. The logger is equipped with a Texas Instruments INA228 IC, facilitating high-resolution measurements with impressive accuracy. It also includes an onboard microcontroller, eliminating the need for a connected PC during data collection. The data can be transmitted over WiFi to a Linux PC, where it can be viewed as a graph in the InfuxDB dashboard.
Usage of this logger is straightforward, thanks to its four types of adapters for different measurement needs. It can measure various types of connections, including USB Type-C, mini-B, and other cabling types. The logger is also designed for ease of use, with a clear display showing vital information and a simple button operation for starting and stopping measurements. It has a safe charging mechanism for its LiPo battery and is designed with careful considerations for polarity connections to prevent damage to the device. Overall, Nakajima's High-resolution Voltage-Current Digital Logger is a robust and user-friendly tool for anyone needing precise power measurements for a variety of electronic devices. For more details please refer to the project Github Repository.