6 ms·

I made a nice brown(ish) noise generator for my bedroom. I use it at night and sometimes during the day when I want to meditate, or something. It uses an ATtiny

I made a nice brown(ish) noise generator for my bedroom. I use it at night and sometimes during the day when I want to meditate, or something. It uses an ATtiny85 to generate white noise, which I filter through a resistor-capacitor. I put it in a mounting I made and used varnished balsa wood to make a nice box for it. ATtiny85 are dinky little chips to use. It's instant-on and off, and I don't have to worry about corrupting anything, or some upgrade quirk like I do with the RPi. I was still using my original RPi on a permanent basis until recently. RPis are not obsolete if your requirements are modest. Try running X-Windows and Firefox and you're in for trouble, though.

bavell 4y ago
Thanks for giving me ideas for my own pile of ATtiny85's I have lying around:)
- blippage 4y ago
  You're welcome. I did a write-up from some time ago: https://mcturra2000.wordpress.com/2019/09/03/brown-noise-sleep-machine/ https://mcturra2000.wordpress.com/2019/09/03/brown-noise-sle... AFAIK the schematic is accurate. Use the bottom one because I do like the filtering. White noise tends to be too harsh for my liking. Although it is one of my earlier projects, it has proved to be a good and enduring solution (to me, anyway). It has since acquired a snazzier encasement using balsa wood. I bought some wire mesh for the front of the speaker, to give it protection. If you want to do day/night timing (although I personally think that's overkill) , you could think about adding a DS3231 clock. I recommend steering clear of those really cheap Chinese modules (DS1307, if memory serves). They're a complete waste of time. Have fun!
  - bavell 4y ago
    Excellent, thanks again!! This may just be the inspiration I've needed to start playing around with hardware again. I've mostly got all the parts I need to get going, just need to find the time :)

bavell 4y ago

Thanks for giving me ideas for my own pile of ATtiny85's I have lying around:)

blippage 4y ago
You're welcome. I did a write-up from some time ago: https://mcturra2000.wordpress.com/2019/09/03/brown-noise-sleep-machine/ https://mcturra2000.wordpress.com/2019/09/03/brown-noise-sle... AFAIK the schematic is accurate. Use the bottom one because I do like the filtering. White noise tends to be too harsh for my liking. Although it is one of my earlier projects, it has proved to be a good and enduring solution (to me, anyway). It has since acquired a snazzier encasement using balsa wood. I bought some wire mesh for the front of the speaker, to give it protection. If you want to do day/night timing (although I personally think that's overkill) , you could think about adding a DS3231 clock. I recommend steering clear of those really cheap Chinese modules (DS1307, if memory serves). They're a complete waste of time. Have fun!
- bavell 4y ago
  Excellent, thanks again!! This may just be the inspiration I've needed to start playing around with hardware again. I've mostly got all the parts I need to get going, just need to find the time :)