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#attiny25

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John Wilson<p>Finally got all of the parts together to play my <a href="https://mastodon.social/tags/synth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synth</span></a> <a href="https://mastodon.social/tags/vcdo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vcdo</span></a> (voltage controlled digital oscillator)</p><p>It’s 1v/oct, an <a href="https://mastodon.social/tags/attiny25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>attiny25</span></a> is programmed to respond to the incoming voltage and behave like a <a href="https://mastodon.social/tags/vco" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vco</span></a> </p><p>It also has a gate input, voltage controlled amplitude, voltage controlled waveform select, and voltage controlled tuning (I change the frequency of the internal osc on the attiny25), but in this clip, those last three functions are controlled by potentiometers</p><p>My 4yo is playing the keyboard</p>
John Wilson<p>But… it looks a little slow. So I got out a known good working <a href="https://mastodon.social/tags/VCDO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VCDO</span></a> and hooked it in instead, and I think I know what the problem is. </p><p>It looks like the fuses on the <a href="https://mastodon.social/tags/attiny25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>attiny25</span></a> are incorrect and it’s using the 1mhz internal oscillator instead of the 8mhz one.</p><p>I don’t fully understand why that would give me the sounds I was hearing but maybe it’s an artifact of a slowly varying voltage going into a Class D chip amp. That’s just a guess though.</p>
✯ CyberguerrillⒶ ✯ #ICC<p>I2C Bootloader for ATtiny85 Lets Other Micros Push Firmware Updates <a href="https://hackaday.com/2018/10/20/i2c-bootloader-for-attiny85-lets-other-micros-push-firmware-updates/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2018/10/20/i2c-bo</span><span class="invisible">otloader-for-attiny85-lets-other-micros-push-firmware-updates/</span></a> <br><a href="https://mastodon.social/tags/microcontrollers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Microcontrollers</span></a> <a href="https://mastodon.social/tags/attiny" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>attiny</span></a> <a href="https://mastodon.social/tags/attiny25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ATtiny25</span></a></p>
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