Some time ago i designed a switching circuit for my experiments. Because it works so well i like to show it and maybe someone will find it useful too.
The 2104 is not a fast driver but if your point of interest is between 10 and 100kHz this pcb will do a great job. Frequency and duty cycle are adjustable with buttons and can be configured within the software.
I attached the GERBER file if you like to make one for yourself. If you need the software i will provide the INO-file as well.