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View topic - SMS music through a guitar pedal

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  • Joined: 11 Mar 2018
  • Posts: 64
  • Location: New Zealand
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SMS music through a guitar pedal
Post Posted: Sat Oct 07, 2023 12:52 am
I've been having a play around with playing SMS music using an ATMega8 + sn76489.

I had a go at feeding the output through a guitar pedal with some distortion and reverb and thought it sounded pretty neat :3

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  • Joined: 09 Jun 2014
  • Posts: 375
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Post Posted: Sun Oct 08, 2023 9:00 pm
Looks like you are having fun! :)
Are those led lights the 4 sound channels? Did you apply a different effect on each channel?
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  • Joined: 11 Mar 2018
  • Posts: 64
  • Location: New Zealand
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Post Posted: Sun Oct 08, 2023 10:24 pm
Yes, the four LEDs are used to represent the four sound channels.

Volume on the sn76489 is actually an attenuation, so smaller numbers represent louder sounds. The range is from 15 (silent) to 0 (full volume). For each channel, the LED is configured to light up when the volume register has a value of 8 or below.
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  • Joined: 06 Mar 2022
  • Posts: 659
  • Location: London, UK
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Post Posted: Mon Oct 09, 2023 8:36 am
Haha, cool project! :)
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