[Project] JOG, a precision voltage source

JOG is a (video) voltage source with a multiturn Bourns potmeter for precise adjustments.
Finetune your VCO / modulation source / FM inputs etc.

Current state: ready to launch. I have 4 pcb sets in stock.
The frontpanel graphics might get an update with the next order.
Let me know if you are interested !

10 turn potmeter to adjust the output voltage (VAR jack)
4 static voltages
1 variable voltage, switchable from -1v to +1v → 0v to +1v

8HP black panel
Skiff friendly
Current draw: soon

Trimpot details:
trimpot 1 sets the 5v input to a 0v to 5v range (set to 1v for video purposes)
trimpot 2 sets the ‘trimpot 1 value output’ to a 0 to 1v range (set to 0.5v for example)
so then :
jack1 : -0.5v
jack2: +0.5v
jack3: -1v
jack4: +1v
jack5: variable voltage 0 to 1v or -1 to +1v (according to trimpot settings)
→ selectable with the switch

If you place a 78l09 instead of a 78l05 voltage regulator you could use this for audio / CV ranges too. (for example, ±8v or ± 5v)

Here are some pictures, I fitted a large vintage knob on this one! one of a kind

Panel pcb picture so you see the graphics better:


That’s a rad looking knob

Thonk will have kits available soon!


In which order are you numbering the jacks? Clockwise from a particular jack? Anti-clockwise from a particular jack? Left to right, top to bottom? You might want to refer to them as top-left, bottom-left, top-right, bottom-right, and bottom-center (or bottom-middle) instead of by number, for clarity’s sake in your documentation.

I had to rush the buildguide, but i’m making a module manual when I get back from Italy (I’m leaving tomorrow)
All will be logical and clear!
thank you for this note. I tried to make it clear with the symbols on the panel, which might get an update in the upcoming re-order

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I’ve added the module manual

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