Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic

Measuring voltage and adjusting it is crucial in electronics, making the Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC combo an invaluable tool. Analog to Digital Converters (ADCs) convert analog voltages to a format readable by microcontrollers, essential for boards like Raspberry Pi, which lack analog input pins.

The PCF8591, although basic with its 8-bit resolution, is cost-effective and suitable for numerous applications. It provides four 8-bit analog inputs for voltage measurements. Pair it with potentiometers for simple knob-based adjustments.

Alongside its ADC capabilities, the PCF8591 includes an 8-bit Digital to Analog Converter (DAC), enabling creators to generate custom voltages and interactively measure circuit responses. The configuration allows up to eight PCF8591s on a single I2C bus, expanding your setup to 32 analog measurement channels and 8 signal generation channels.

The affordable breakout board features convenient 0.1”/2.54mm headers and SparkFun Qwiic compatible STEMMA QT connectors for seamless integration. While a QT Cable is not included, the board is compatible with various Python and Arduino libraries, simplifying voltage measurements. The versatility and affordability of the PCF8591 make it a practical component for your electronic projects.