Making a 12 bit DAC Using an Arduino -- The Learning Circuit 96

Matt — Wed, 24 Feb 2021 08:24:00 GMT

Current Revision posted to Documents by Matt on 2/24/2021 8:24:00 AM

Making a 12 bit DAC Using an Arduino

The Learning Circuit | element14 presents | Project Videos

www.youtube.com/watch

Once analog signals have been processed by electronics and converted to digital, to convert them back to analog, a DAC is needed. In this video, Karen shows how to make an R-2R Ladder DAC using just resistors, all of the same value. The ladder uses 12 of the digital I/O on an Arduino Uno as its inputs. While the Ladder DAC will be 12-bit, Karen is able to use it to show the differences in resolution between a 4-bit, 6-bit, 8-bit, and 12-bit DAC, generating a sine wave as a visual demonstration.

Bill of Material:

Product Name	Manufacturer	Quantity	Buy KitBuy Kit
Through Hole Resistor, 1 kohm, 500 mW, ± 1%	TT ELECTRONICS / WELWYN	36	Buy NowBuy Now
Breadboard, MCM 60 rows, ABS, 8.5mm, 165mm x 56mm	MULTICOMP	1	Buy NowBuy Now
Arduino Uno SMD, ATmega328 MCU	Arduino	1	Buy NowBuy Now
Wire Kit, Jumper, Male to Male, Solderless, 100 mm - 250 mm, 75 Piece	MCM	1	Buy NowBuy Now
MULTICOMP PRO USB Cable, Type A Plug to Type B Plug, 0.91 m, 3 ft, USB 2.0, Beige	MULTICOMP PRO	1	Buy NowBuy Now

Additional Parts:

Product Name
Computer for programming

Tags: digital, sine wave, port manipulation, converter, resolution, e14_makerkaren, conversion, arduino, analog

The Learning Circuit 96: Making a 12 bit DAC Using an Arduino

tariq.ahmad — Tue, 24 Aug 2021 13:15:32 GMT

Revision 1 posted to Documents by tariq.ahmad on 8/24/2021 1:15:32 PM