# A litany of dumbassery **URL:** \ **Category:** Uncategorized\ **Created:** [April 4, 2020, 9:42pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526 "2020-04-04T21:42:52Z")\ **Posts on this page:** 20\ **Page:** 8
**Author:** ![Farabide](https://avatars.discourse-cdn.com/v4/letter/f/ecc23a/32.png) [@Farabide](https://lookmumnocomputer.discourse.group/u/Farabide)\ **Post date:** [June 30, 2020, 8:30am UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/141 "2020-06-30T08:30:08Z")
Flexible module builds like mixers, MIDI to cv, noise and simple passive circuits don’t need to be kosmo width. Or a mirrored panel in the middle; you are going to be staring at it a long time. ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [June 30, 2020, 11:33am UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/142 "2020-06-30T11:33:20Z")
My cut-to-width-by-Americans-with-sloppy-tolerances aluminum panels have only a vague nodding acquaintance with round metric widths, so planning for a round metric case width for me would be pointless. Even my Vector rails have sloppy tolerances, they were nominally 60" but were really 60.5". I sawed them in half and that’ll be the case width. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [June 30, 2020, 5:19pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/143 "2020-06-30T17:19:43Z")
Umm, ok, I think I see the problem. ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/10ee73a749d55665a23a0aba221800a994f8b69d.png) (non-supply nets trimmed out) EDIT: The good thing with this kind of screwup is that you only need to add one bodge wire 🙂 Once that was sorted, everything worked exactly as planned. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [July 1, 2020, 2:34pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/144 "2020-07-01T14:34:41Z")
Oops. ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/aae2394befc65a9dd46855b70accc79694d5101e.jpeg) (Apologies for the supply wire color choices, I don’t like using yellow/green for non-earth, but I’m using a piece of 3-wire mains cable so the choices were a bit limited. And nothing was connected to the board, so the only victim here is the poor capacitor. And my nerves…) ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [July 1, 2020, 2:57pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/145 "2020-07-01T14:57:25Z")
I can smell this picture. ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [July 1, 2020, 3:39pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/146 "2020-07-01T15:39:56Z")
Every time you post an oops, it makes me feel better 😍 ---
**Author:** ![Maxhirez](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/maxhirez/32/42_2.png) [@Maxhirez](https://lookmumnocomputer.discourse.group/u/Maxhirez)\ **Post date:** [July 1, 2020, 3:53pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/147 "2020-07-01T15:53:27Z")
Did you only blow a capacitor up or did it get full-on impregnated with a face-hugger? ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [July 2, 2020, 4:01am UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/148 "2020-07-02T04:01:54Z")
Do you know how many utterly boneheaded wiring errors it’s possible to make on an 8 step keyboard sequencer? Nope. More than that. ---
**Author:** ![devicex](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/devicex/32/28_2.png) [@devicex](https://lookmumnocomputer.discourse.group/u/devicex)\ **Post date:** [July 2, 2020, 5:06am UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/149 "2020-07-02T05:06:13Z")
yeah still need to make mine work too … ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [July 2, 2020, 11:08am UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/150 "2020-07-02T11:08:11Z")
For one thing, when you’re working from the back? It goes from 8 to 1 left to right, not 1 to 8. ---
**Author:** ![twinturbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@twinturbo](https://lookmumnocomputer.discourse.group/u/twinturbo)\ **Post date:** [July 2, 2020, 6:22pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/151 "2020-07-02T18:22:23Z")
I gave up on my freeform 8-step, that’s why I started my PCB project… ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [July 2, 2020, 6:44pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/152 "2020-07-02T18:44:56Z")
It’s actually doing fairly well. After dealing with a couple of backwards diodes, everything I tested so far looked like it more or less worked, except that steps 1 through 8 were 8 through 1, and on each stage the toggle on/off switch was off/on. The reversed steps can mostly be fixed in software, except in my version button 1 is special, being connected to the reset pin, so I do have to reverse the wires for 1 and 8. First I’m doing the switches, two down, six to go, because I refuse to just relabel them and have off be up and on be down. And there’s some switch bouncing to deal with, but that’s also software. ---
**Author:** ![twinturbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@twinturbo](https://lookmumnocomputer.discourse.group/u/twinturbo)\ **Post date:** [July 2, 2020, 9:38pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/153 "2020-07-02T21:38:35Z")
I tried some debouching in arduino software recently, I think it was when using the IRQ line on the dunio for my sequencer. it was only partially successful and was not overly confident. ---
**Author:** ![heckseven](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/heckseven/32/23483_2.png) [@heckseven](https://lookmumnocomputer.discourse.group/u/heckseven)\ **Post date:** [July 2, 2020, 11:26pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/154 "2020-07-02T23:26:38Z")
fried one of my VCOs the other day by plugging the power into the wrong connector. to fix it, I swapped out one of the ICs (whichever one was hot) and pushed the Arduino code back onto the Arduino. works good as new. just pay more attention than i did. ---
**Author:** ![devicex](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/devicex/32/28_2.png) [@devicex](https://lookmumnocomputer.discourse.group/u/devicex)\ **Post date:** [July 2, 2020, 11:37pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/155 "2020-07-02T23:37:30Z")
yeah you gotta watch that extra connector . I put tape over mine , after cooking the op amp on one of my vco’s of course it was the only one I hadn’t taped right from the time I built them . ---
**Author:** ![heckseven](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/heckseven/32/23483_2.png) [@heckseven](https://lookmumnocomputer.discourse.group/u/heckseven)\ **Post date:** [July 2, 2020, 11:38pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/156 "2020-07-02T23:38:41Z")
smart. I’m going to do that right now. ---
**Author:** ![CTorp](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/ctorp/32/15023_2.png) [@CTorp](https://lookmumnocomputer.discourse.group/u/CTorp)\ **Post date:** [July 3, 2020, 2:25am UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/157 "2020-07-03T02:25:58Z")
I’m pretty sure that mistake is what started this thread ---
**Author:** ![twinturbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@twinturbo](https://lookmumnocomputer.discourse.group/u/twinturbo)\ **Post date:** [July 3, 2020, 8:42pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/158 "2020-07-03T20:42:58Z")
i have not even fitted the “link” connector… Sam has eluded to it in one of the recent vlogs or at least i think it was what he was on about… ---
**Author:** ![KardashevTypeII](https://avatars.discourse-cdn.com/v4/letter/k/43a26b/32.png) [@KardashevTypeII](https://lookmumnocomputer.discourse.group/u/KardashevTypeII)\ **Post date:** [July 3, 2020, 9:34pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/159 "2020-07-03T21:34:12Z")
Rob, The link connector functions as in/out for an oscillator drone with up to three oscillators, which could be three 3340 VCO’s but there was something about a cross contamination synthesis oscillator (Fart Box) and a Modcan style VDCO that could interchange with any VCO. The system will be oscillators, a driver to control pitch and FM and a mixer. Imagining a wall as tall as me of oscillator drones using 3340 VCO’s was my entry to the Kosmo rabbithole. I want to name my modular although it’s not a separate format (exactly the thoughts of using the Kosmo format but not Sam’s own Kosmo persona) which I’ve been dumb at coming up with a name. This is fitting for this thread. -Fumu / Esopus ---
**Author:** ![Farabide](https://avatars.discourse-cdn.com/v4/letter/f/ecc23a/32.png) [@Farabide](https://lookmumnocomputer.discourse.group/u/Farabide)\ **Post date:** [July 3, 2020, 9:45pm UTC](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526/160 "2020-07-03T21:45:14Z")
Call it anything but put hybrid+ at the end then the form can be anything you like. [Previous page](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526.md?page=7) [Next page](https://lookmumnocomputer.discourse.group/t/a-litany-of-dumbassery/526.md?page=9)