JSON use to map Hardware in MAX MSP

Troubleshooting and Support
1

Hello gardeners.

To start, I want to emphasize that I have studied this thread extensively to try not to repost anything that has already been said. I have also followed this wiki to make sure I am doing things right.

I have a single Daisy Seed on a breadboard, plugged into my 2018 Macbook Pro and am trying to code it using Gen~ in MAX/MSP. I have run a ground wire from Analog Ground pin to the Digital Ground pin. I have a simple switch with Digital V Out going into the middle pin of the switch, and another pin going out from one side of the switch and into the Seed’s [ADC 3][A3/D18][25] pin with the intention of that pin reading an input of HIGH or LOW depending on the switch. I have no resistors on my breadboard.

In MAX I have the Oopsy object and a gen~ object. Into the gen~ I have MAX’s drumloop.wav playing constantly into IN 2 in the gen~ object. Inside gen~ I have [param sw1 @min 0 @max 1] going into the left input of a [gate] object. The right input of the [gate] object is being fed the drumloop.wav audio from outside the gen~ object. Then I have [gate] flowing into OUT 1.

My JSON file is:

{
“components”: {
“sw1”: {
“component”: “Switch”,
“pin”: 18
}
}
}

I use Oopsy to point at that JSON file, push RESET and BOOT on my Seed board and upload it successfully to the board.

Why then, do I not hear the drumloop.wav file when I flip the switch on the breadboard?

I have also never been able to get an analog knob reading to work in MAX either.

Ive been working on this since February. I feel like a frustrated idiot. Any help would be amazing. Thank you all.

2

Hey Daruma,

I’m really sorry to hear that it’s been frustrating. I’ll do my best to help out!

Here are some thoughts to get us started :slight_smile:

  1. Were you able to get sound out of your Seed? A simple patcher that’s just a sine-tone at 440 hz.

  2. I think you do need a pull-up resistor when using a switch.

  3. Also, I think you should use the digital pins for the switch (look, I used to use ADC for buttons and switches too in the past, so I fully understand)

  4. Are there any other lines in that JSON file?

  5. Finally, let’s start simple! I suggest getting the analog knob reading to work. Let’s twist a knob and change a pitch of a sine-tone. And then let’s move on to switches and audio file playback.

2 Likes
3

8 Months later and I’ve decided to come back to this topic. I delayed responding mostly because you were putting out great videos on your Youtube channel as well as great stuff on Electrosmith’s channel and I was going to be patient for a video to cover this topic… but it looks like it isn’t going to be covered via YouTube anytime soon.

  1. Never got any sound out!
  2. I will breadboard it again with a pullup resistor to verify. But I am unsure this will resolve the issue, since I couldn’t even get a switch to close a circuit for a pin to send data into Max MSP (just a 1 or 0 input)
  3. I will try that! :smiley:
  4. There are no other lines in the JSON file, do I need to add more/something else?
  5. I would love to get a knob to work. I will try the changes above and see if it gets a knob to work… what should I do if it doesn’t work?

Thanks for all your help and amazing tutorials online. I hope you are able to make more.

4

Welcome back Daruma!

I got busy with other stuff, but I hope to resume making Oopsy videos soon!
In the meantime, asking questions on here would be the best :slight_smile:

I think this would be the first task that should be resolved. Do you have audio jack connected to the Daisy?

Yes, I was wrong about that, I’m sorry. You should be able to hook up a switch/button like this without a need for a pull-up resistor: https://raw.githubusercontent.com/electro-smith/DaisyExamples/master/seed/Button/resources/Button_bb.png

By the way, I made this custom JSON guide few months ago that should be helpful!

5

You rock Takumisama. Ill review that JSON thread you made, and send some pictures of my audio jack wiring and get back to you soon!

I know troubleshooting for noobs isn’t as fun as complex projects, but I sincerely appreciate your time with this.

1 Like
6

Sounds good!

And I’m totally happy to help :slight_smile: