A26F: Atari 2600 MIDI Music Interface (Page 3 of 4)

Good point! Added.

And yeah - I've done the same before re: soldering directly to the motherboard. Lot's of room, you're right.

I know you are a busy man doing all this work in your spare time, so no pressure.  But the previous post about using a single port and possibly the same pcb as genmdm has stopped me from building my own - for now.  I have a flash cart and prosounded 2600jr opened up and waiting for the next rev of modifications

Is there a way to add an analog audio input to the teensy board for your new Channel 1 DAC Feature?

Now im not little scale, so i may stand corrected. But the key is in the letters DAC-or digital to analog converter. So in order to hear the sounds through the atari the signal must be digital first. The current public a26f stores a number of digital samples within the teensys code. A future version is said to allow custom samples, but this will still require some form of digital encoding first. I imagine this will be using a max4live patch.

In its current state, no you cannot add an audio input. I doubt you will be able to in the future either, as this will require something to encode analog signals into digital, for it then to be converted back to analog within the atari.

No need to be sorry, i was just answering as i know seb is constantly busy. In theory yes the teensy has digital to analog converters built in so you can do it, but right now you would have to code it yourself, its not going to be as easy as just soldering a part in. Seb has provided the full code so if you wanted to you could add it yourself. But you do need to learn to walk before you can run. Get a teensy or arduino, some basic components like leds and pots and work your way through some tutorials.

Arduino has been around longer, and you can run arduino code on a teensy-you just need to be aware of the different pin layout. There are quite a few teensy projects but TBH youre more likely to find examples with arduino, its probably the most popular microcontroller out there. Their website is full of tutorials and they have a friendly active user forum. Im not saying buy an arduino instead of a teensy, im saying look for someone who has made for example an arduino sampler, study the code and apply it to your own project.

Most people starting out with microcontrollers will take someone elses examples and just modify the code/circuit to see what happens. It may seem a little daunting at first, but honestly it is alot easier than it seems and is really rewarding.

So, I tried to make a version that uses one controller port. Haven't got it to work yet.

At any rate, the next version will feature audio input --> TIA streaming (but hey keep in mind its only four bits) as well as editable custom waves.

Hi seb, if I just add an opto to d7 will midi work or do I need to adjust the code in any way?