At long last, the new XR2206 function generator design is nearing completion. I'm hoping to finish the design and testing this week, and have a batch of boards fabbed and parts ordered next week.

Two of the major improvements include various power supply options from unregulated AC input to split or single supply DC. Also, a TTL logic squarewave output.

The sin/tri wave output will be fixed to ~1Vp-p, and an extra buffer/amplifier board for adjustable output.

And finally, for ease of use I'm finishing the design of a modified frequency counter based on an ATTiny micro outputting to a 16x2 LCD.