Toe Screamer

[pinkjimiphoton]

^
^
I like your nail polish, Eric.

hahahah i use black sparkle, myself

if the @#$%in prince of darkness, the ozz-man, can have black fingernails, well, so can't i, cuz muddy waters invented 'lectricity or some such shit



it keeps me from wearing my nails off when i am gigging a lot, i rarely use a pic so always wear the nails down til the nail bed is exposed, painful and ya can't just crazy glue it  like ya can cuts or ripped off callouses.

and it looks freekin fab. go figure.

[EBK]

Got my digital hardware together.  Maybe tonight I will "fire" it up.  I think I will use a separate 5V regulator for the pixels rather than risk straining the one on the Arduino board.

[EBK]

Does this instruction seem wrong to anyone else?

When using a DC power supply, or an especially large battery, we recommend adding a large capacitor (1000 µF, 6.3V or higher) across the + and – terminals. This prevents the initial onrush of current from damaging the pixels.

Regardless, I stand ready with a 1000µF BFC that I will dutifully add to my circuit.

[EBK]

I have three breadboards that I can plug header pins into and one breadboard with holes that are too small.  The too-small breadboard was the only one not in use by an unfinished project, so I had to make a prototype with a scrap of veroboard.

I'll program this tomorrow.

[EBK]

Every single time I make some sort of Arduino project, I have to navigate a bunch of cryptic dependency errors.    I must remember not to update any part of the IDE or the libraries now that it is working again. 

Anyway, this result is showing some of the test code for the Neopixels, so I can happily say it works and this little gadget has a bunch of fun potential.

There's just three wires running to that ring: +5V, GND, and Data.

[EBK]

And, I didn't believe this program was going work on the first attempt, but here is some simulated fire! 

I attempted to capture this with different exposure settings; both vids are showing the same program being executed.

[diffeq]

And, I didn't believe this program was going work on the first attempt, but here is some simulated fire! 

I attempted to capture this with different exposure settings; both vids are showing the same program being executed.

If there is an ADC input on this board, it's just asking to be set up to vary LED brightness based on input level. 

[EBK]

If there is an ADC input on this board, it's just asking to be set up to vary LED brightness based on input level. 

There are several ADC inputs.  And, yes, I agree the fire needs to be controlled somehow with the pedal circuit.  I was thinking of just controlling the flame intensity with gain setting, but something envelope controlled could be interesting.

Maybe even something like a faux Rubens Tube.

[bluebunny]

this result is showing some of the test code for the Neopixels

The irony of the purdy twinkly light show is not lost on me, given the unspeakable pain that follows when you stomp the pedal...   

(Nice work, btw, Eric!)

[EBK]

In my fire effect demo vids, I have a pedal in the background that is in a Hammond black textured enclosure.  It has given me some additional design inspiration. 

The black textured enclosure reminds me a bit of cast iron, and think it would look good combined with the fire effect.  So, now I'm thinking about spraying the enclosure with matte black paint (I already own some grill paint), which would probably naturally texture due to my lack of painting skill  , and creating some faux cast lettering for control labels.
Alternatively, I could try to bolt on a labeled aluminum plate made from some flashing and a decal for the labeling.

[patrick398]

Add some doors and you've got yourself a wood burner

[italianguy63]

Add some doors and you've got yourself a wood burner

A "Franklin 'Tove"?

[deadastronaut]

Cool..

I've been playing with neopixel strips, and then squeezing into attiny...

After going through the rainbow stuff, I instantly wanted the fire........I bid you to burn.......

I have mine charging all day via solar panel on 4x 1.2v batts...and it works great...

Those rings look cool, the fire looks pretty good too.....looking forward to the update on this. 

[Ben N]

I'm sorry if this is not in the fakir spirit of this thread, and also for my noobish ignorance, but one of those ring thingies could be set around a rotary encoder and made to show the present setting (i.e., lit to the point in the rotation where a pot's knob would be pointed, if it had a pot), could it not? Because that would be a wonderful thing for digital control (digipot or PWM+LED or whatever) of effects.

[EBK]

I'm sorry if this is not in the fair spirit of this thread,

Anytime you see a thread started by me, all comments are welcome (well, almost all -- no fighting or anything like that, I suppose).  Makes things more interesting when we explore the full reach of new ideas, I think. 

and also for my noobish ignorance,

Had to fix that. 

but one of those ring thingies could be set around a rotary encoder and made to show the present setting (i.e., lit to the point in the rotation where a pot's knob would be pointed, if it had a pot), could it not? Because that would be a wonderful thing for digital control (digipot or PWM+LED or whatever) of effects.

It could definitely be used for that sort of thing.  Possibly a bit of overkill though, except for the benefit of minimizing wiring, given the price.  Maybe if you had some additional visuals in mind, it could be worth the expense.  You could maybe use one rotary encoder to control multiple parameters, and display each parameter using a different color, blending as needed.
Edit: Well, at $7.50 USD for a 12-pixel ring, I suppose these aren't crazy expensive for simpler applications.

[Ben N]

Yup, a bit pricey. I found something similar but smaller (a plus) on ebay for around $4 a piece. That might be worth exploring, although, still, at $20 for a four knob pedal, well... Where did you get the 12-LED ring? I saw a lot of them on Aliexpress, but for less than $7.50, I think. Adafruit only has a 24-LED ring, if I am not mistaken.

[EBK]

Yup, a bit pricey. I found something similar but smaller (a plus) on ebay for around $4 a piece. That might be worth exploring, although, still, at $20 for a four knob pedal, well... Where did you get the 12-LED ring? I saw a lot of them on Aliexpress, but for less than $7.50, I think. Adafruit only has a 24-LED ring, if I am not mistaken.

My 12-pixel ring is from Adafruit.  They sell 12, 16, 24, and 60-pixel rings.  They also sell some that are RGBW, in varying color temperatures.

[EBK]

A quick test to see if the Neopixel ring could be mounted around the stomp switch.  I removed the inner row of spikes to let the lights shine through.  Those holes are not lined up with the ring.  The ring fits though. 

This is still proof-of-concept testing at this point.  All of the holes will eventually be redone (perhaps in a different shape for the lights).
In addition to redrilling, I will modify the code to give a steadier flame, so it will look less blinky.  Will probably dim the flame some while I am at it and maybe add a diffusing layer.

[deadastronaut]

cool.....will that bleed through the audio though?....like colour changing leds do...

[EBK]

cool.....will that bleed through the audio though?....like colour changing leds do...

I've gotten away with switching a bunch of LEDs with the same microcontroller before without bleed through.  (There is essentially no audio is this vid to prove that though.   )

I'm hoping my luck continues.