Using the ADS1115 ADC converter in continuous mode for burst sampling
The 16-bit ADS1115 analog to digital converter (ADC) has a programmable amplifier at the front end, with the highest gain setting providing a range of +/- 0.256 v and a resolution of about 8 microvolts.
The primary attraction is this ADC has differential inputs. This is especially useful with Wheatstone bridge arrangements. A typical combination would be a two element varying bridge, and an inexpensive voltage reference like the LM4040, or the TL431. Adding the second sensor doubles the voltage swing, and the ADC’s -32768 to +32767 raw output fits perfectly into Arduino’s 16-bit integer variables.
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