Type 32C Filters

[richiyobs]

Here's what I have for KiCad. Did you see this https://groupdiy.com/threads/500-series-yannlu-audio-eq-500-harrison-mr-replica.67383/

Great! thanks for sharing Grayhill footprint....
yes i saw Yannlu eq, it's based on MR series.... with variable Q.....
i preferred redrawing 3232, first for learning purpose and then for fun... for me the occasion to explor Wien Bridge configuration

 

[Bobby Baird]

Can you please tell me where to find grayhill footprint? did you draw it whit kicad footprint editor?

https://www.snapeda.com/
https://componentsearchengine.com/library/kicad
https://www.ultralibrarian.com/

Sign up and download what ever symbol, footprint, or 3D .stp file you need for your design. Just make sure you double check measurement with the component datasheet because there could be discrepancies. Also, you may want to adjust pth pads for mechanical parts to be larger.
For instance the grayhill switch footprint I downloaded had the pin spacing 1.905 when the datasheet clearly states 1.91 spacing. I had used the 1.905 spacing on my first run and the particular grayhill I had was hard to fit. The pin spacing has a tolerance as well of .13mm. The footprint I sent you has the corrent spacing with .60pth. so you can run a .325mm trace between pads.

 

[richiyobs]

thanks a lot for your support...

 

[Bobby Baird]

I'll be receiving my grayhill switches to build me a few more of the 500 series units. The switch's are back in stock at onlinecomponets. If there is interest in the 500 unit I can make another run of boards if y'all want to build some. I ordered a bunch of sifam SB151 double wing collet knobs I can bundle with the boards to fit the switches. Just send me a DM if interested. If there's potential I'll start a BM thread.