diy arduino data logger $10
They can be changed to Millivoltmeter, data loggers, and so on. Maximum real-time sampling rate of these kits are and they can not tolerate more than DC.
Data Logger, Motorcycles, Motorbikes, Biking, Motors
A DIY Arduino data logger for $10 from 3 components | Underwater Arduino Data Loggers
Adding Sensors to an Arduino Data Logger | Underwater Arduino Data Loggers