Welcome to NFL´s first SMT DIY module.

As i´m expecting you´re further experienced with the assembly of SMT parts i´m not providing a detailed step by step documentation this time.

The 2164 MUST be an Alfa AS2164D, all the other ones on the market don´t work as expected!!!

I´ve been following the schematic of SSI but the circuit doesn´t work with their own chip as it seems …

The 2 pole 3 positions rotary switch is this one:

Best you use the IBOM for comfortable assembly.

Self oscillation mod:

Change R26 to 27k