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Digital Signal Generator

Quick recap Philip discussed the development of an electronic instrument for laboratory use, focusing on a Digital Synthesizer unit from M5Stack that can generate various waveforms for circuit testing in STEM education. He detailed the specifications and features of the signal generator, including its amplitude range, frequency capabilities, and resolution, while explaining the commissioning project that integrates an oscilloscope with a core computer. Philip outlined the objectives and components of a digital signal generator project, including the software setup using UI Flow 1, and provided an overview of the code for a simple DDS unit setup that allows for changing mode, frequency, and phase through buttons. Summary Digital Synthesizer for STEM Education Philip discussed creating electronic instruments for his laboratory, focusing on a Digital Synthesizer (DS) unit from M5Stack. He explained its components, including an STM32 microcontroller and waveform generation chip, and described its I2C connectivity with other M5Stack computers. Philip outlined the unit's cost of around $28.50 US and its primary application for generating sine, square, and triangular waves for electronic circuit testing in STEM education. Signal Generator Features Overview Philip discussed the features of a signal generator, including its amplitude range of 0 to 0.6 volts, frequency range up to 1MHz, and 18-bit resolution. He mentioned that the phase could also be adjusted. Philip then showed a commissioning project called DDS1 on his desktop, which included an oscilloscope generating signals that could be selected using a core computer. Digital Signal Generator Project Overview Philip explained the objectives and components of a digital signal generator project, including the use of a M5 Stack core computer with DDS functionality and a portable oscilloscope with a 48 megasamples per second sampling rate. He described the software setup using UI Flow 1, which will display and allow control of waveform mode, frequency, and phase on the computer's LCD screen. Philip also mentioned that he encountered issues with UI Flow 2 but decided to proceed with UI Flow 1 for the project. DDS Unit Code Explanation Philip explained the code for a simple DDS (Direct Digital Synthesis) unit setup, which allows for changing mode, frequency, and phase through buttons A, B, and C. He mentioned that the software could be expanded to include a frequency selection encoder and that they were able to display selected frequencies and waveforms on an LCD and oscilloscope. Philip encouraged viewers to explore the M5Stack website for more information on the DDS unit and oscilloscope, including specifications and wiki pages. Ref: M5Stack DDS Unit: https://shop.m5stack.com/products/dds... FNIRSI DSO-TC4 ( https://www.fnirsi.com/products/dso-tc4 )