[sdiy] Converting a Meng Qi voltage memory to banana FRAC format

thresholdpeople thresholdpeople at protonmail.com
Sun Jul 26 15:30:25 CEST 2020

I'm not sure if anything's changed from the original module to the kit, but at least with the original the board was exactly the same for both the 3.5mm and banana version.

Cinch/Johnson bananas won't fit without modification as Matthias mentions... the original used banana jacks which looked very similar to these (I don't have it anymore so I can't verify if the dimensions provided are the same, but I'd imagine so): https://www.ebay.com/itm/50pcs-Banana-Jack-Socket-Binding-Post-Test-Probe-for-4mm-Banana-Plug-Black-Red/264765586993?hash=item3da5423e31:g:Y0oAAOSwiX9e6I-9.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Sunday, July 26, 2020 8:24 AM, Matthias Herrmann <matthias.herrmann at fonik.de> wrote:

> When using the Johnson / Cinch Banana sockets from mouser you would need a 5.0mm/0.185 hole in the PCB for the solder lug.
> Just be sure that you cut and bridge the traces that are running below the sockets.
> The height should not be a problem with the Johnson type banana sockets.
> Cheers!
> Matthias
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Spiros Makris
> Sent: Sunday, July 26, 2020 12:13 PM
> To: synth-diy mailing list
> Subject: [sdiy] Converting a Meng Qi voltage memory to banana FRAC format
> Hello list,
> I am asked by a friend if it is possible to get a eurorack Voltage Memory and covert it to fit with the rest of his rig, which is, mainly, a bugbrand synth voice.
> The PCB pic I can see from modular addict, for the eurorack version, doesn't seem accommodating to bananas. I could widen the wholes already present for the 3.5mm jacks on the PCB, but I'm not sure if there's enough space...
> I think widening the wholes on the Panel is very easy so it doesn't feel concerning at this stage.
> Any kind of advice is greatly appreciated!
> https://modularaddict.com/mengqi-voltage-memory-kit
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