In a previous project based on an ATtiny44 I added an expansion pin on PA2 (ADC2/AIN1/PCINT2). download phototransistor board interior PNG.download phototransistor board traces PNG.Download Arduino sketch phototransistor reading after button press.Download Arduino sketch phototransistor reading to serial.Ideally, that means constantly measuring lux, humidity, temperature and voltage (output) and logging that data to a spreadsheet. I will be fabricating some biophotovoltaic fuel cells and want to be able to monitor environmental and energy harvesting properties of each cell. I plan to use this week to begin prototyping components of my final project.
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