Your VCO looks intersting. Do you have more details on this please?
It's a fun mix of Surface Mount Technologie and Though Hole components
Also, are your front panels PCB made?
The most important part of this is "not using tempco resistor" I use heater instead. I use MAT14 which is Analog Devices's Matched Monolithic Quad Transistor for exponential circuit. Two transistors for exponential, one for temp sensor, the last one for a Heater. This is Monolithic IC so very good for this usage, I think. But this chip is a little bit expensive so I looking for alternative.
Also, this Beta board has particular pin headers. I place pinsockets to interface board as the same place. and plugged it(stupid)
(In my latest version I'll remove these stupid connectors)
> It's a fun mix of Surface Mount Technologie and Though Hole components
Axial Resistor is so cute isn't it?
I have varias axial resistors but chip one are not so much.
I have to adjust some values so I choose axial one for beta version.
> Also, are your front panels PCB made?
Yes! I draw some design in Illustrator and exported to DXF. And import it to eagle cad. My face panel has no copper pattern (except connector) so it is strange to create it with PCB, i think. But in fact this is the cheapest and handiest way to create face panel like this. But I still searching the other way.
Also, there are more images/movies in my tumblr page. (But recently not updated. I mainly use twitter. I'll update tumblr soon...)