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3 pin headers sensor port for Arduino pins and Pi GPIO
They are easy to adjust with a screwdriver
A 2-point calibration (pH 7 + one other) is fine for most uses
Verify serial levels
ADS1015 12-Bit 4-Channel ADC w/ PGA - I2C Breakout touch sensor 3 pin headers sensor portDon't fret! There's always an ADC to solve your analog signal problem. The ADC ADS1015 12 Bit 4 Channel with Programmable Gain Amplifier is a high precision Analog to Digital Signal Converter that can convert any analog data to binary with up to 12 bit precision at 3300 samples per second over I2C. What's amazing with this component is that it has a programmable gain amplifier and it can run from 2V to 5V power and logic. Talk about awesome!
