Understanding ADCs and Using the ADS1115 with Raspberry Pi Learn how analog signals become...
Raspberry Pi lacks built-in ADC; ADS1115 16-bit I²C module adds 4 analog channels and 860 samples/sec for direct sensor integration (temperature, humidity, light, pressure). For IoT stacks, this eliminates custom ADC design overhead, accelerating deployment while keeping per-node costs sub-$10.
Understanding ADCs and Using the ADS1115 with Raspberry Pi
Learn how analog signals become digital data, and how to connect the ADS1115 ADC to a Raspberry Pi for high-precision sensor measurements.
Introduction
One of the first surprises many Raspberry Pi users encounter is that the Pi has no built-in Analog-to-Digital Converter (ADC).
This means that while the Raspberry Pi excels at digital communication, it cannot directly read analog sensors such as:
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