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mmontag

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  1. Quick question - will https://github.com/midibox/mios32 be updated with the latest LoopA revision? Currently looks like v2.06. In the meantime I'm just jotting down some ideas here... Sleep/suspend/low-power mode LoopA has no power switch. It would be nice to leave it unattended for days at a time, without unplugging. Could be simple as turning off LEDs. Multiple undo/redo Especially for incremental note recording; up to memory limit. Note cleanup Bad note data can originate, for example, when a MIDI controller is sending on 2 channels at once and LoopA is listening on all channels. Delete notes with 0 length (causes glitchy behavior). De-duplicate overlapping notes. Add missing note-off events to the end of a sequence. Sustain pedal behavior/stuck notes Reset sustain pedal when stopping the sequencer, or when loop restarts, to avoid stuck notes. In general, I'm doing a lot of MIDI panic; would be nice if that could be slightly more ergonomic one-handed key shortcut than Scene+Live. Repeat operation in Notes screen It would be handy to repeat previous operation (i.e., all operations applied to the current note could be applied to a subsequent note). Inspired by the vim command.
  2. I wanted to post back here to close the loop on my question. Andy pointed out the problem: I soldered two shift register ICs backward. Fortunately, they weren't damaged. Once that was corrected, I had a lot of jittery activity on Footswitch 1 (called Button 1 in test mode). This was solved by touching up all the solder points (resistors, etc.) between the 1/4" footswitch jack and the J55 header. Learned a lot during this build, including the "two soldering iron method" (with two big solder blobs) for desoldering SMT ICs. Now the Loopa is working great and I'm just as soon coming up with feature requests. Some kind of support for program change would be great (I think this was mentioned in Loopop's review too). Many thanks to Andy and Peter. Matt
  3. Hello, I just finished building my LoopA V2 and have an issue - the LoopA doesn't power on. The soldering and all tricky header installations seemed to go just fine (although ground plane pads were sometimes hard to heat up). When I plug it into my computer via USB, the green LEDs around the display start to blink very dimly in unison. I also had a popup on my computer saying too much power was being used on the USB port. When I remove the Base PCB and Plate PCB, and plug in the Core PCB by itself, LED 1 to 4 light up (also LED 5 and 6 dimly), and I'm able to flash the 2.08 firmware with MIOS. I didn't solder the 3.5 mm audio jack and the reset switch yet, since they were backordered. I soldered R101 and R102 (220k and 330). No SD card in the slot. Any ideas that would explain this behavior? I've checked all the solder joints, but I suppose I could do it again... Thanks! Matt
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