Organizer 2pcs ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter with Programmable Gain Amplifier High Precision ADC Converter Development Board for Arduino Raspberry Pi
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Product review & video
if you have something like the uno with a 10-bit ADC there's times when you may want to use an external ADC maybe you need to be able to measure differential inputs maybe you need more than ten bits resolution to take finer measurements or maybe you're using up all the pins that you already have and you'd like to add more external analog measuring capabilities let's take a look at using this ad s11 1/5 which is a 16 bit ADC that communicates over I squared C and is available on convenient breakout boards that we can use with Arduino with the Arduino Uno is built-in 10-bit ADC we can read in a value between 0 and 10 23 representing a range of 0 to 5 volts assuming the ad sees reference voltage is set to 5 volt VCC so if we split up 5 volts into 1024 units we get about 4.9 millivolts per unit that comes from having a 10-bit ADC 2 to the 10 is 1024 so the input range is between 0 and 10 23
