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Messages - mario

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This is a very neat solution, thanks for sharing!

With triple-AAA holders, a wire-connector pin was included, to be inserted into the relevant spring... which might not be too handy when replacing batteries. But I guess I haven't posted any picture of that modification - your one is much better.

Indeed, trying to solder anything on the holder results in immediate disaster :)

General Discussion / Re: Great product
« on: July 19, 2017, 12:47:41 AM »
Hi InactiveX, thank you for a great feedback - glad you like it and having fun already! Delighted to hear that you got some good results from playing it loud, connected to this kind of amplifier - as that's something I've never tried.

Also, thanks for heads up re attachments - it was configured to quite limiting default values, so I increased it a lot :)

Hope you will post the photos of the box too, once it's finished - it would be great to make a dedicated page for user's creations - more than half of all KS rewards were DIY kits so maybe we can see some very interesting pieces :)

General Discussion / Re: How to use the magnetic sensor - ring?
« on: July 18, 2017, 12:30:16 PM »
Sure, will get back to that part once all is shipped - would not be fair to delay it, mainly because some backers got it weeks ago while others are still waiting (could go forever, you know, that's how the software is...   ::) )

General Discussion / Re: It arrived!
« on: July 18, 2017, 12:26:14 PM »
Ah right, so you have an original - no hacking then of course! :)

Would be a fun to build new one and connect it directly. Plenty of schematics available, e.g. this - first result on Google:
(more info: )

General Discussion / Re: How to use the magnetic sensor - ring?
« on: July 17, 2017, 08:16:29 AM »
The sensor is safe to use with strong magnets, it would need to be a really strong one (or rather an AC field) to damage something - and it would probably damage rest of the electronics as well :)

Stronger magnet will make it possible to control from larger distance, and therefore more precisely.

But the rings work well enough - I tried this one with inscriptions and this one with darker band, they are good, this hematite one is a lot weaker and almost unusable. Haven't tried this one, looks the same as the darker but might be made from different alloy.

UPDATE: The silver and gold ring arrived and work well - they're much stronger than dark one.

Yes from the channels in current beta firmware, only one or two respond to it. The programming channels are broken (sorry, it happened while last-minute refactoring and optimizing other parts of the code, and I've noticed it only after flashing over a hundred boards).

General Discussion / Re: It arrived!
« on: July 17, 2017, 08:00:41 AM »
Hi Jan, welcome! :)

Happy to hear you like it and that you immediately taught it to co-operate with your other box instrument :)

I only learned about Cracklebox now, thanks to you (this is one reason why I love this project a lot)... looks bit like a theremin but it is not wireless, user is closing the circuit and affecting sound with their resistance, right?

It probably does not have wired output, just speakers, but you could hack it. On the "pickups" input, Gecho will take any signal within 0-3V range - maybe use a passive divider if wider range needed. The input is AC coupled and has protective diodes, so no worries about damaging something.

Hardware - Extensions and hacks / PCB Board Documentation
« on: July 14, 2017, 07:16:28 PM »
Hi Guys,

If you are interested in hardware extensions, look here:

It explains MIDI, in case you want to add it using commonly available elements.

Also, the last picture shows all soldering pads. For more information, you might want to check out the STM32F405RGT6 datasheet: en.DM00037051.pdf

Any questions welcome!  8)

DIY Kits - Soldering, mounting / Where to find documentation
« on: July 14, 2017, 07:09:30 PM »
Hi Guys,

If your board requires soldering, start here:

If you've got a DIY kit with the box, you may want to check this out:

(all resources are also listed here: )

Any questions, feel free to ask here!

Good luck!  8)

General Discussion / Re: It arrived!
« on: July 14, 2017, 07:06:34 PM »
Hi GaŽl, welcome on board! :D

Thank you, I'm delighted to hear you like the PCB, sound, and especially that you find settings intuitive enough. There is still work left on it, but I'll keep it within what the "Quick start" sticker says.

Yes, the code and everything will be published very soon. I am trying to balance work between shipping and catching up with what was promised at the software side (also to get a break from manual work once in a while :) )

Do you mean "no delay" as if it should start playing immediately, a default channel, without needing to press everything? Or, no delay as having echo completely off? (that can be currently achieved by pressing button #3 during play, more times - till it reaches that setting).

Midi sync and chords from keyboard will be definitely achievable, glad you are interested in expanding the firmware!

General Discussion / Re: It arrived!
« on: June 29, 2017, 09:00:33 AM »
Hi Aron, that's great - glad to hear it arrived on time. And, welcome to the forum!
By the way, before soldering batteries and the rest, you can try it immediately, by powering via USB from a computer, charger or a power bank.
Hope you like it, I'm eager to hear what you think! :D

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