Open Source 3 Channel Frequency Generator

[Yucca]

A short youtube video of the unit in action, a bit blurry because it's shot with a USB webcam:

http://www.youtube.com/watch?v=XXJbskeYq-s

[z.monkey]

Howdy Yucca,

Cool!  DIY Freq generator.  My favorite kind of project.  So you get to hardware, software and mechanical.  Are you doing any PCB designs or are you using protoboards?  I build test equipment at work on a as needed basis.  I usually don't put it in a pretty box like you have.  Mine get mounted on a chunk of wood (don't have the budget for pretty boxes). 

Have fun!

Blessed Be...

[Yucca]

Howdy Yucca,

Cool!  DIY Freq generator.  My favorite kind of project.  So you get to hardware, software and mechanical.  Are you doing any PCB designs or are you using protoboards?  I build test equipment at work on a as needed basis.  I usually don't put it in a pretty box like you have.  Mine get mounted on a chunk of wood (don't have the budget for pretty boxes). 

Have fun!

Blessed Be...

Hi Z.Monkey,

Yep, as you well know it is good fun to realise your ideas. Software's my favourite bit of it all, I'm not doing any PCB design on this project, I'll be using proto board and flyleads to the FETs. The pretty box was zero cost, old salvaged computer PSU steel case with acrylic bezel salvaged from a broken shop sign discarded on the street. I don't think it'll look as cool as your infinity coil though .

[Yucca]

I've got the FETs working OK now, the FET drivers make it all very easy, you just hook them straight up to the gate. I'll be changing the FETs to P-Channel, which will reduce my max freq. down to ~20MHz, still fast enough for me though.

Cascading will be possible with the unit for gated waveforms.

I will also be adding two BNC ports to the back that will accept analog (0...5v) signals, these will go through optoisolators and into the ADC of the microcontroller. This will enable the unit to perform automatic 3D sweep searches for maximum or minimum with the option of logging the data back to a PC over a USB cable.

Basically the unit will be able to do lots of different jobs just by changing the software, a kind of swiss army knife for the lab, not bad for 50 euros worth of kit.

NOTE:
It's progressing at a slowish rate because I work in the day and spend time with family in the evening.

[innovation_station]

wow!!  awsome job bro

i would just love to get my hands on somthing like that....

might you be intrested in designing some pwm's  i would be intrested in re selling your kits..or compleated units my web page in in the works and can easly be expanded should you be intrested ...

agin great work!!

ist

i would really love a TUBE unit