PCF8591 A/D and D/A Converter Module — I2C, 4-Ch ADC + 1-Ch DAC

PCF8591 A/D and D/A Converter Module — I2C, 4-Ch ADC + 1-Ch DAC

The PCF8591 module adds 4 channels of 8-bit ADC and 1 channel of 8-bit DAC to any Arduino via I2C. Includes onboard sensors (photoresistor, thermistor, potentiometer) for immediate experimentation. Ideal for expanding Arduino analog inputs and adding a true analog output via I2C.

Key Specifications

• IC: PCF8591 | ADC: 4 channels, 8-bit | DAC: 1 channel, 8-bit
• Interface: I2C (0x48–0x4F, 3 address pins)
• Onboard sensors: Photoresistor / Thermistor / Potentiometer
• Supply voltage: 2.5–6V | Sampling rate: 11kSPS
• Compliance: RoHS compliant

Why Choose This?

• ✅ ADC + DAC in one module — expand both analog input and output via I2C
• ✅ Onboard sensors — photoresistor, thermistor and pot for immediate use
• ✅ 8 selectable I2C addresses — use multiple modules on one bus
• ✅ Simple I2C control — read/write with standard Wire library

Typical Applications

• Arduino analog input expansion via I2C
• Light and temperature sensing with onboard sensors
• True analog output for signal generation
• Electronics learning and sensor experimentation

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