Function/Waveform Generator || DIY or Buy

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Check out Cezar Chirilas article on All About Circuits: https://www.allaboutcircuits.com/projects/how-to-DIY-waveform-generator-analog-devices-ad9833-ATmega328p/

You can get the commercial function generators here (affiliate links):
Siglent SDG 2082X: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=233265100453&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
AE20125: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=260883293519&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
XR-2206: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575101368&toolid=10001&campid=5337582279&customid=&icep_item=401185073102&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg

More project information (schematic, pictures,.....) on Instructables: https://www.instructables.com/id/DIY-FunctionWaveform-Generator/

Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
1x 12V center tapped transformer: https://s.click.aliexpress.com/e/_dZzaRwR
1x IEC socket: https://s.click.aliexpress.com/e/_dYQWdHl
1x B40C2300 full bridge rectifier: https://s.click.aliexpress.com/e/_dUSXlfZ
1x LM7812 12V regulator: https://s.click.aliexpress.com/e/_d8GjYYf
1x LM7912 -12V regulator: https://s.click.aliexpress.com/e/_d6ueEfl
1x LM7805 5V regulator: https://s.click.aliexpress.com/e/_dWITJXp
1x Capacitor kit: https://s.click.aliexpress.com/e/_d8NcJ0L
1x Arduino Nano: https://s.click.aliexpress.com/e/_d85qR0x
1x Rotary Encoder: https://s.click.aliexpress.com/e/_dXKK3dV
1x AD9833 DDS IC: https://s.click.aliexpress.com/e/_dTc4NZH
1x I2C LCD: https://s.click.aliexpress.com/e/_d6HiiMB
1x TL071 OpAmp: https://s.click.aliexpress.com/e/_dXd3VYL
1x BNC connector: https://s.click.aliexpress.com/e/_dZ51v0F
1x 10k, 50k Potentiometer: https://s.click.aliexpress.com/e/_dU8s3rt

In this episode of DIY or Buy we will have a short look at commercial function/waveform generators in order to determine what features are important for a DIY version. Afterwards I will then show you how to create a simple function generator, the analog and digital way. At the end I will then present you a DIY DDS function generator design which can (kind of) hold up to the commercial versions. Let's get started!

Thanks to JLCPCB for sponsoring this video
Visit https://jlcpcb.com to get professional PCBs for low prices

Music:
2011 Lookalike by Bartlebeats