DFRobot - Gravity: Serial Data Logger for Arduino

Features • With USB function, no card reader required • Onboard 128MB Flash memory, no TF card required • Support multiple baud rates, good compatibility • LED indicator for viewing data writing status visually Applications • Offline data collection • Capture product log grab • Robots and drones debug Specification • Supply Voltage: 3.3V~5V • Operating Current: 32mA • USB Protocol: USB2.0 • Operating Temperature Range: -30℃~85℃ • Operating Humidity Range: 5%RH~85%RH • Dimension: 32*27mm/1.26*1.06” Sources : https://wiki.dfrobot.com/Gravity_Serial_Data_Logger_SKU_TEL0147