Function Generator Using AD9833 DDS – Arduino Compatible 

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https://www.electronics-lab.com/project/function-generator-using-ad9833-dds-arduino-compatible/

This is an Arduino-compatible hardware designed for building a low-cost function generator. The project consists of all the required spices to build your own function generator. It includes multiple options such as a potentiometer, rotary encoder, tactile switches, op-amp, and 16×2 LCD interface. The project can output sine, triangular, and square waves with gain adjustment […]

Multiple Output Power Source – Dual 10V (+/-10V), 5V DC, 3.3V DC from 9V Battery 

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https://www.electronics-lab.com/project/multiple-output-power-source-dual-10v-10v-5v-dc-3-3v-dc-from-9v-battery/

This is a multiple output power converter module that provides +/-10V (Dual 10V), 5V DC, and 3.3V DC from a 9V PP3 battery. This is a very useful project that has been designed for low-load current applications. Dual +/-10V output from a 9V battery is a key feature of the project. The battery holder can […]