Gorva m45 with top jacks - yay or nay?

[LukeFRC]

I want to build a prunes and custard/curds and whey - but no bigger than 1590b - PedalPCB pcb is a little too wide for 1590b so looks like I’ll be doing my own

Which got me looking at the smaller gorva m45 - which I know can be done with all top jacks - just is it a good idea too?!

 

[LukeFRC]

(Or if anyone knows if the curds and whey board can be sanded down for a 1590b)

 

[Feral Feline]

P&C in a M45, all top-jacks — It's a good idea.
If you lay it out yourself, consider 1/8w resistors to save some space.


BTW...
ELS's Spotted Dick will fit a 1590B2 or 1590BS with all top-jacks.

 

[jcpst]

Until recently I didn’t think you could put a Curds and Whey into a 1590B. But now I’m wondering… there was a recent build report with a Spirit Box inside a 1590B. They mentioned the board was just 1mm too wide… and the Curds and Whey is narrower than the Spirit Box by a hair.

Thread 'More 1590B builds - Greengage, Spirit Box and Roboto!'

Oct 27, 2024

Hi, several more downsized builds - this time the Greengage, Spirit Box and Roboto:










The Spirit Box PCB is about 1mm too wide for the 1590B enclosure, so it had to be mounted sideways with 9mm pots (and flying leads). Bit of a headache to build in this size box but it turned out well. I considered grinding down the sides of the board but didn't want to cause any shorts between the ground plane or any traces along the edges and the enclosure.

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• Replies: 5
• Forum: Build Reports

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[Robert]

(Or if anyone knows if the curds and whey board can be sanded down for a 1590b)

I've never sanded a PCB down to fit a 1590B but there is more margin on the Curds and Whey PCB than the Spirit Box, so it should be possible.

Curds and Whey (1.9mm from trace to edge)	Spirit Box (1.1mm from trace to edge)

 

[LukeFRC]

I've never sanded a PCB down to fit a 1590B but there is more margin on the Curds and Whey PCB than the Spirit Box, so it should be possible.

Curds and Whey (1.9mm from trace to edge)	Spirit Box (1.1mm from trace to edge)
View attachment 84448	View attachment 84447

Though it looks like that spirit box has the pcb rotated 90 degrees

 

[jwin615]

The effectslayouts spotted dick looks like it may fit.
Drill layout for a 125b

 

[LukeFRC]

I've never sanded a PCB down to fit a 1590B but there is more margin on the Curds and Whey PCB than the Spirit Box, so it should be possible.

Curds and Whey (1.9mm from trace to edge)	Spirit Box (1.1mm from trace to edge)
View attachment 84448	View attachment 84447

If the PCB is 57.15mm wide then it needs to loose 1.6mm (0.7mm off each side) to fit so that should just about work, is the other side similar clearance? (and how accurate is the 57.15mm width?

I've though I'ver laid out a pcb for the grove M45 It's a lot simpler to buy one PedalPCB pcb via musikding!

 

[Robert]

The clearance is the same on both sides of the PCB.

The board outline tolerance is ±0.2mm, so it's pretty accurate.

 

[Feral Feline]

I've sanded down a number of PCBs, none were PPCB.
Have yet to kill one, but I'm sure it'll happen eventually.

The effectslayouts spotted dick looks like it may fit.
Drill layout for a 125b
View attachment 84452

POST #3, 1590B, 1590B2 or 1590BS ...
Check the build doc, it shows 1590B, so...