SUMMARY
This discussion focuses on measuring solar panel voltage using an Arduino in high-voltage solar systems, specifically those with voltages up to 351Vdc. Participants emphasize the importance of using an inverter to manage voltage levels safely and suggest using high-voltage resistive attenuators and difference amplifiers for accurate measurements. The conversation highlights the need for isolation techniques, such as opto-isolation and buck converters, to protect the Arduino from high voltage. Additionally, the Adafruit INA219 current sensor is recommended for monitoring current while maintaining electrical separation from the solar circuit.
PREREQUISITES
- Understanding of high-voltage solar systems and inverter functionality
- Familiarity with Arduino programming and interfacing
- Knowledge of resistive voltage dividers and their applications
- Experience with current sensors, specifically the Adafruit INA219
NEXT STEPS
- Research the design and implementation of high-voltage resistive attenuators for voltage measurement
- Learn about opto-isolation techniques for safe communication in high-voltage environments
- Explore the specifications and applications of the Adafruit INA219 current sensor
- Investigate the use of buck converters for stepping down high voltages to safe levels for Arduino
USEFUL FOR
Electronics enthusiasts, solar energy system designers, Arduino developers, and anyone interested in safely measuring high-voltage solar panel outputs.
