The default mode of the ADS1115 is single shot mode where theĭevice wakes up, takes a measurement, and then goes back to sleep. Main setup control element) will not affect the current reading, only A change in the configuration register (the In this mode you can let the ADS1115 sample The ADS1115 has an impressive quiescent current of 150uA when inĬontinuous conversion mode.
The single address input is sampled continuouslyĪnd if you connect it to GND, VDD, SDA or SCL you can set the addressįrom 0x48, 0x49, 0x4a, 0x4b respectively. Normally you would need two inputs to switch between 4 addresses but theĪDS1115 16-bit ADC uses a clever scheme. The addressing control is unusual in that you only need to use one input pin as the address control pin. You can setup the ADS1115 with one of four addresses, so you can place 4 ADS1115 chips on a single I2C bus: Notice how the accuracy of the system includes all error sources:
The interesting diagram that shows the real capability of the device is Figure 19 from the datasheet: Includes all errors from voltage reference and PGA. Here's a copy of the ADS1115 datasheet (revised 2018 - ads1115 pdf)Ġx48, 0x49, 0x4a, 0x4b Operating temperature This accuracy includes all sources ofĮrror (voltage reference, Gain error, offset and noise). This device has a stated typical accuracy of 0.01% (but it hasĪ maximum accuracy of 0.15%).
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This ads1115 tutorial shows you how to setup the libraries to drive Has an internal calibrated reference for high accuracy. The ADS1115 is a precise 16bit ADC with four multiplexed inputs - YouĬan use each input on its own, or in pairs for differential measurements. Arduino Toggle Switch - using a standard push button.Arduino Oversampling: How to Get More ADC Bits with No Extra Hardware!.
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