Messages

1

preenfm2 and preenfm3 / Re: Can the preenF405 be used standalone

« on: December 07, 2020, 06:38:39 PM »

As I intend this to be a module, amplification and DC removal are on the main board as per the attached schematic.

Your message does make me think it would also be a good idea to deal with this on a per module basis to give a stronger signal which is hopefully less likely to receive interference as it winds its way along the board. It won't matter for a while though because I still need to sort out the unit itself before I start looking too in depth at modules. I have a lot of programming to do.

Thanks for all your help. If I ever get far enough that I make this into a module, I'll report back.

2

preenfm2 and preenfm3 / Re: Can the preenF405 be used standalone

« on: December 05, 2020, 03:04:52 AM »

Thanks. I'll give it a try.

3

preenfm2 and preenfm3 / Re: Can the preenF405 be used standalone

« on: December 04, 2020, 07:17:07 PM »

Thanks for the quick response and clarifying.

Thankfully you've got a .pdf schematic there which I've had a look at.

I would imagine the USB key is heavily integrated in the code and it would be simpler to just include the USB stick rather than go through and try to remove all references to it.

I've attached a schematic, copied from the R5's, but cut down to just the essentials. Do you think this would work as is without modifiying firmware i.e. would it take a 3.3V MIDI signal from a microcontroller and produce sounds on L and R?

Again, thanks for your help.

4

preenfm2 and preenfm3 / Can the preenF405 be used standalone

« on: December 04, 2020, 06:21:28 AM »

I am looking to embded an FM synth in a project, and the preenF405 looks good and simple to use. I want to control it over serial (ideally faster than 31,250 baud)

Is it possible to add the two MCP4922s, a USB for programming (if required) and have this work?

If that is possible, are there any potential hiccoughs I would have to look out for?

Thanks for the help.