Whadda WPM344 AD / DA Converter Module

The Whadda WPM344 AD / DA Converter Module offers an exceptionally straightforward and efficient method for acquiring analogue signals and converting them into digital data. Based on the versatile PCF8591 chip, it simplifies the process of data collection, requiring no complex setup or configuration. It is ready to integrate into your projects immediately, making it an ideal choice for students, hobbyists, and beginners embarking on electronics or data-logging experiments.

This compact module can measure up to four separate analogue inputs, which can be configured as either single-ended or differential inputs for greater flexibility. It features an auto-incremented channel selection, allowing for seamless sequential reading of multiple sensors. The analogue input voltage range extends from VSS to VDD, accommodating a wide variety of signal sources.

At its core, the module utilises an 8-bit successive approximation analogue-to-digital (A/D) conversion method, supported by a built-in track and hold circuit for accurate sampling. It also includes a multiplying digital-to-analogue converter (DAC) with a single analogue output, enabling it to function bidirectionally. Communication is handled via a simple serial I2C bus interface, ensuring easy connection to microcontrollers like Arduino, Raspberry Pi, and others. The maximum sampling rate is determined by the speed of the I2C bus.

Designed for convenience and low power consumption, it operates on a single power supply ranging from 2.5V to 6.0V and features a low standby current. Its small form factor and simple interfacing make it perfect for educational projects, prototyping, and applications requiring reliable analogue data acquisition such as temperature monitoring, light level sensing, potentiometer reading, and other environmental measurements.