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Messages - alefoot

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1
Hardware Questions / Re: Gecho2 lipo charging
« on: January 22, 2020, 02:51:12 AM »
Had the opportunity to try a different cell - an 18650 this time. No change to reported behaviour.
examined the soldering of the leads, and reflowed the battery lead to pcb joints. They didn't get any prettier, but I'm pretty sure the joints are sound.
Me replacing the chip sounds like an opportunity for disaster :) Available options look like ignore behaviour, or send the board home for a visit...

2
Hardware Questions / Re: Gecho2 lipo charging
« on: January 11, 2020, 10:36:13 PM »
Let's see.
Behaviour appears consistent regardless of USB power source - I've tried with three different "wall-wart" and two li-po battery backup units, all of which have been recently used to charge and or run other devices including Glo and Gecho 1.
Cable supplied with Gecho 2. exhibits the same behaviour as several other reasonable quality cables used as above.

Of the three different types of source voltage [PC USB port, Wall-wart, and battery back-up unit, I am least confident of the battery back-up, since the various ones I own have different behaviours when they detect a device draining power from their supply-out port. My guess is that it's to do with how much load they read and their circuitry is effectively black box for me.

I can confirm that both red and blue leds light when the unit is USB powered without the battery being connected.
Occasionally [maybe one time in ten] the orange 'usb' led comes on and remains illuminated when testing with a battery back-up unit. Weird.
Connecting to a live [PC] usb port results in 'data flicker' from the usb led, as would be expected.

Regardless of whether the Gecho2 is idling or turned off, the same "both red and blue illuminate" behaviour occurs.
 

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Hardware Questions / Gecho2 lipo charging
« on: January 10, 2020, 08:57:43 PM »
Trying to charge a new [i.e. not recycled  / repurposed] 603450 fitted to my diy Gecho2.
Have tried a number of different charge sources and cables, including the workhorse set which we charge our phones with, and most other lipo powered 'toys'.
Starting from discharged - i.e. Gecho ceases to function - connecting the charge cable illuminates the red 'charging' led.
After a significant period of time, the blue "charged" led lights, but the red charging led also stays lit. unit remains in this state indefinitely, certainly overnight, so many hours.
Cell output voltage at the Gecho pcb measures only 3.7v at this point [not 4.2v]. Multimeter being used is a generally credible unit [Fluke 117]. That 3.7v is of course downstream of the cell protection circuitry.
I see here


that you have the pad pairs for the leads well bridged with solder; me, maybe not so much. Is that likely the cause of my perceived problem?  Any suggestions as to what else I may have messed up? My soldering on the jumper closing blobs looks clean and sound.

4
Hardware Questions / Re: Gecho v2 : MIDI In
« on: December 13, 2019, 08:08:11 AM »
As another data point, FWIW, I just tried my diy-cased unit, channel 31, keyboard an old 25 key Oxygen 8. Old skool DIN connect MIDI, not usb. Unhelpfully, it worked first time. - Of course I used the sensors to have the Gecho produce sound in response to my "singing" in to the microphones. Once Gecho was producing a drone, the keyboard had it producing tones and chords. White / blue leds appear to be [more or less] indicating the keys I'm pressing. When I tried to enter chords in channel 111, I got no result. I had wiggled the MIDI pigtail , and 'unmade' the connection. Reseating the TRS into its socket remedied that, and LEDs appeared to be following what I was keying in.

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Hardware Questions / Re: Glo turns on when charging
« on: November 19, 2019, 08:53:07 PM »
Thanks for clearing that up Mario! Probably not worth making any changes  - please don't feel the need to spend time investigating further.

6
Hardware Questions / Glo turns on when charging
« on: November 19, 2019, 09:52:45 AM »
Connecting Glo to a USB source to charge the LiPo turns it on, playing the selected first channel. Turning it off doesn't work, it turns back on immediately.
What did I do wrong, or is that the expected behaviour?

7
Firmware - Expanding and updating / Granularity
« on: March 04, 2018, 09:39:18 PM »
Any plans to push an update with the #412 Granular capability included? Or is that being left as "an exercise for the reader"? :D

8
Feature Requests and Feedback / Re: Second melody line?
« on: November 29, 2017, 08:04:28 AM »
FWIW, the idea was prompted by / "tested" using the lower end of the existing melody voice, so maybe stealing a couple of oscillators isn't far off :)
Not sure how similar [if at all] the engines are, but quoting from their site, "Groovesizers are... open-source... , the TB2 is a 4 voice paraphonic wavetable synth". Without more storage, isn't wavetable a bit limiting?
The eternal dilemma; Trading processor time against storage limitations - I'm pretty certain you will know what makes most sense :)

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Feature Requests and Feedback / Second melody line?
« on: November 27, 2017, 09:48:03 AM »
Is there any realistic possibility that the process for saving a melody line might be duplicated to allow a bass line?

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Firmware - Expanding and updating / Firmware not updating from 0.223
« on: November 27, 2017, 08:58:37 AM »
Windows 10
Gecho App v0.61b
Clicking the 'check for updates' option then checking for available firmware returns a message to the effect that current firmware is 0.223 and that an update to v5.0 is available.
Update process appears to run [clearing memory and writing several sectors of data, handshake LED activity as previously seen]
After 'update' checking for available updates shows that Gecho still has firmware v0.223 installed.
Repeating process appears to give identical result.

Channel 112233 reports 223

Or so it appears here.
If I can give any further info please let me know, thanks!

11
Feature Requests and Feedback / Re: chord / melody relationship
« on: October 28, 2017, 10:21:00 PM »
Playing channel 4121 from Gecho in the normal [stand-alone] manner currently returns a melody line which sounds as though rests have been implemented, to my ear at least; the melody notes occur, they do not inappropriately sustain into the next melody note. I guess I need to check this listening 'dry' - the echo may be confusing me :)

Downloading that channel into the editor to see how this is being done displays periods [the symbol previously used for sustained notes]
Trying to play the channel contents from within the preview facility in the editor appears to result in no activity at the Gecho.

Incidentally, the spacebar on my keyboard appears to insert periods when entering Melody in the app entry window, but spaces in the Edit window.

Am I just falling into an implementation / UI gap, or am I doing something wrong, or?

12
Feature Requests and Feedback / Melody / Chord volume
« on: October 27, 2017, 11:26:16 PM »
Really enjoying the expanding capabilities!
Is there a means for adjusting the volume of melody and chords separately? I didn't find it. If not, is that something which might be implemented?

13
Feature Requests and Feedback / Re: chord / melody relationship
« on: October 12, 2017, 09:08:19 AM »
Using the song [chord / melody] editor in the app, I downloaded the current 'user input file' from Gecho, and got over sixty chords!
Am I misunderstanding what the 8x4 maximum implies? Or did something change?

Not that I'm complaining  :D

14
Feature Requests and Feedback / Re: chord / melody relationship
« on: October 02, 2017, 08:48:39 PM »
That's great, thanks for the rapid response! A minus sign would work as a rest symbol for me - it's easy to type :) Being able to rest the chords for a measure (as well as being able to rest the melody notes) would be good.
Opening up the ability to alter the chord / number of notes relationship would be really helpful - here's hoping you can find a means to do that.

I'm happy to see the editor and associated file upload/download evolve in to a superset of the facilites for composition available on the Gecho in 'stand alone' mode. There's only so much that can be squeezed into a limited number of buttons and LEDs before it all gets horribly confusing. Kudos on managing to make what's there now so intuitive :)

15
Feature Requests and Feedback / chord / melody relationship
« on: October 02, 2017, 08:29:34 AM »
Could you please point me in the direction of an explanation of the timing relationship between chords and melody notes  as entered either via Channel 41 or using the app editor. Rests, counts, any means to retain comments, my saved files appear to have had anything after // stripped....
Thanks!

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