Day 1: VCOs
Part 3: Building a VCO around a 4046 PPL chip.
Difficulty: Easy
Price: ~4$
MiaW playlist: https://www.youtube.com/playlist?list=PLyE56WXw0_5Q5QGMEXWmskuhojKyRdA3T
In this episode we go back to Elliot Williams Logic Noise series on Hackaday and bring with us some of the information and circuits from the allaboutcircuits.com vco. Putting these two together we get a really cool square wave vco with a few fun features. This one is super easy to build and quite inexpensive.
Links to schematics, parts and other relevant stuff:
Link to the Schematics (redrawn with the CV-summing circuit from allaboutcircuits.com article):
https://www.dropbox.com/s/ws1vxhrwru68zk5/Schematic_4046VCO.pdf?dl=0
Link to the Hackaday Logic Noise article about the 4046:
https://hackaday.com/2015/08/07/logic-noise-4046-voltage-controlled-oscillator-part-one/
Link to the fronpanel design svg file:
without CV-amount:
https://www.dropbox.com/s/50bjudtsi6p0udj/1.3%204046%20Simple%20VCO_4hp.svg?dl=0
WITH CV-amount:
https://www.dropbox.com/s/c8qumee7nhcabxa/1.3%204046%20Simple%20VCO_4hp_with_cvamount.svg?dl=0
Link to the component spreadsheet:
https://www.dropbox.com/s/fn9gbn0vo0fteab/MIAW%20Component%20list.xlsx?dl=0
Link to ALL the files for all the episodes as they become available:
https://www.dropbox.com/sh/ynbxdv9nn6z0k47/AABt6dAvez4M-Mz-R9saO9Tka?dl=0
Ebay link to buy the 4046
https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575103922&campid=5338181421&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_from%3DR40%26_trksid%3Dm570.l1313%26_nkw%3D4046%26_sacat%3D0
Ebay link if you need to buy LM358's
https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575103922&campid=5338181421&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_from%3DR40%26_trksid%3Dm570.l1313%26_nkw%3Dlm358%26_sacat%3D0
PATREON LINK If you wish to support my work more than just a thumbs up :)
https://www.patreon.com/SourceryOne