# My build progress **URL:** \ **Category:** DIY STUFF\ **Created:** [March 1, 2020, 8:57pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345 "2020-03-01T20:57:53Z")\ **Posts on this page:** 20\ **Page:** 204
**Author:** ![Jos](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jos/32/151_2.png) [@Jos](https://lookmumnocomputer.discourse.group/u/Jos)\ **Post date:** [November 5, 2021, 2:27pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4088 "2021-11-05T14:27:46Z")
Today I used a K40 laser for the 1st time to make a panel for a module. I’m aiming at using plywood but used some scrap cardboard to get an impression of dimensions etc. As it turns out my sketch was not too bad. Most holes are in the right place, but I’m not there yet. And yes, the engraving on the bottom right was done with too high a power level, the cardboard caught fire … still learning … I drew everything in inkscape and printed with [k40whisperer](https://www.scorchworks.com/K40whisperer/k40whisperer.html). ![20211105_151110](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/0/7/071c3a4a878780b992e1591bddcaabbc8a2b64b8.jpeg) Next step is to change the sketch a bit and then I’ll try [meerk40t](https://github.com/meerk40t/meerk40t), which seems a bit more flexible, to print the panel. ---
**Author:** ![Sonosus](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sonosus/32/13679_2.png) [@Sonosus](https://lookmumnocomputer.discourse.group/u/Sonosus)\ **Post date:** [November 5, 2021, 2:41pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4089 "2021-11-05T14:41:46Z")
> [@Jos](#): > > Today I used a K40 laser for the 1st time How was it? My mate was talking about getting one for our shop but I’m hesitant seeing as cheap chinese gear isn’t always reliable/safe. When dealing with high power electronics, dangerous lasers, and toxic fumes, having reliable systems is very important. Maybe a dumb question but can it cut metal? I would imagine it can engrave metal but cutting would be cool. (don’t encourage me to make a water jet cutter 😛 ) Oh, there’s an idea! Maybe do it @nervous_squirrel style and engrave anodised aluminium to expose the bare metal underneath? BTW there’s an excellent tool called Slicer for Fusion 360 that takes a 3d geometry and ‘slices’ it into layers the thickness of your material, which can then be glued together. Right I will stop bloviating and get back soldering 😃 ---
**Author:** ![Jos](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jos/32/151_2.png) [@Jos](https://lookmumnocomputer.discourse.group/u/Jos)\ **Post date:** [November 5, 2021, 2:55pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4090 "2021-11-05T14:55:38Z")
> [@Sonosus](#): > > I’m hesitant seeing as cheap chinese gear isn’t always reliable/safe A well, almost all electronics come from China these days and if they are tested properly according to the local standards, you should be fine. If you import directly, it is best to check things yourself before using the machine. > [@Sonosus](#): > > Maybe a dumb question but can it cut metal? Maybe a dump question from my side: how thick a slab of steel would you want to cut? No, it can’t because the power level is too low. Also engraving metals is difficult as they often refect the laser. A dark coating on top of the metal is sometimes used to remedy that. Have a look at [lasergods](https://lasergods.com/) for some more info. > [@Sonosus](#): > > an excellent tool called Slicer for Fusion 360 I will look into that. Thx! ---
**Author:** ![Sonosus](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sonosus/32/13679_2.png) [@Sonosus](https://lookmumnocomputer.discourse.group/u/Sonosus)\ **Post date:** [November 5, 2021, 3:08pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4091 "2021-11-05T15:08:11Z")
> [@Jos](#): > > If you import directly, it is best to check things yourself before using the machine. Yeah, that’s the bit that I’m concerned about. I’m generally wary of high voltages coming from generic manufacturers and visually dodgy safety such as loose earthing bolts or more serious faults eg cutting corners with control boards. (if the shoddy coolant pump fails, the laser tube cracks, a tank of water comes into contact with thousands of volts!) I’m probably just wary after having a thermal runaway scare with my 3D printer, but it’s good to see the positive side of the story 🙂 > [@Jos](#): > > No, it can’t because the power level is too low. I thought so. Ach well. > [@Jos](#): > > Have a look at [lasergods](https://lasergods.com/) for some more info. That site looks both very informative and very wallet influential. I will have a look later, thanks! ---
**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:** [November 5, 2021, 3:33pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4092 "2021-11-05T15:33:01Z")
> [@Sonosus](#): > > cheap chinese gear isn’t always reliable/safe Cheap gear. Country of origin not relevant. ---
**Author:** ![popflier](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/popflier/32/80_2.png) [@popflier](https://lookmumnocomputer.discourse.group/u/popflier)\ **Post date:** [November 5, 2021, 4:38pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4093 "2021-11-05T16:38:43Z")
Problem solved. You just need a hot air gun that you can control the amount of air it releases. They’re cheap 😉 ---
**Author:** ![Farabide](https://avatars.discourse-cdn.com/v4/letter/f/ecc23a/32.png) [@Farabide](https://lookmumnocomputer.discourse.group/u/Farabide)\ **Post date:** [November 5, 2021, 6:54pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4094 "2021-11-05T18:54:12Z")
Very impressive! Reminded me of the simons kit (minus the valves of course). Please keep us posted. ---
**Author:** ![Sonosus](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/sonosus/32/13679_2.png) [@Sonosus](https://lookmumnocomputer.discourse.group/u/Sonosus)\ **Post date:** [November 5, 2021, 9:14pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4095 "2021-11-05T21:14:54Z")
So… Today I soldered up the VCDO PCB that I designed. It works but has pops and clicks at certain frequencies, which is a known issue with this circuit. I did put bypass caps all over it and separated the analogue/digital sections as much as possible - it must be the convoluted signal paths. As noted elsewhere, 6 out of the 9 pots are backwards. D’oh. I really don’t like the way I designed it. The components are placed in a haphazard way, there’s vias everywhere and the traces are like a spaghetti junction. I was planning to sell these boards but can only give them away for free due to the mistakes. I’ll stick them on Tindie one of these days so if anyone wants one let me know. A redesign is in the works though with my current workloads that will be a while… ![IMG_20211105_142527](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/8/9/89025cae5ed4087f8e95206b57bede0b95756cb5.jpeg) ![IMG_20211105_142510](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/1/8/184dae15746f3debcbe36a7dee8aac664efb17c0.jpeg) On a more cheerful note, I built an Arpie from Sixty Four Pixels - I had the boards fabbed ages ago but hadn’t got round to ordering all the parts. It worked first try and was a good refresher into drag soldering the SOIC shift registers. I’ll post recordings of both this weekend. First impressions, it’s a really useful tool 😃 ![IMG_20211105_142345](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/8/7/87ca27d5583cc54394ad559fa95bfadd5839c483.jpeg) ---
**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:** [November 5, 2021, 10:17pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4096 "2021-11-05T22:17:03Z")
Hey, let us hear the output when you get it all sorted. Curious what the pops you are talking about sound like. ---
**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:** [November 6, 2021, 2:29am UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4097 "2021-11-06T02:29:20Z")
don’t know but it looks like it will keep you warm this winter . ---
**Author:** ![jaradical](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jaradical/32/12069_2.png) [@jaradical](https://lookmumnocomputer.discourse.group/u/jaradical)\ **Post date:** [November 6, 2021, 7:58am UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4098 "2021-11-06T07:58:17Z")
Another day, another synth build, this time a Preenfm3: [[Album] Preenfm3 build ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/8/4/8413efd381639b37ad40c84d37acb74673675d82.jpeg "Preenfm3 build") ](https://imgur.com/a/wayEzOS) Relatively easy, all the difficult SMD components are already mounted on the board in the kit. Sound came out from all the right places, now I just have to get my head around FM synthesis… ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [November 6, 2021, 10:02am UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4099 "2021-11-06T10:02:30Z")
Today the Dual Balter CV Gate Delay from [Non Linear Circuits](https://www.nonlinearcircuits.com/modules/p/balter?rq=balter) in the case. I just change 2 things, the jack socket of the INPUT of the second, i use a switch jack socket to have the same thing on the 2 output when i don’t use the second in. And also add a switch on the second for 2 values of capacitors (for long/short delay) ![21 - dual balter gate delay - sound bender (1)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/3/0/30b84fc0e6c2f4441ad64f7c0a4103994026e5be.jpeg) ![21 - dual balter gate delay - sound bender (2)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/9/9/999d328ba4c689525e3a332c3f97bde14646cb05.jpeg) a patch with it [![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/8/6/86b45ae8c2912d38e9d8bc78fe3456aed4e68964.jpeg "MODULAR SYNTH DIY - DUAL BALTER CV GATE DELAY (NLC)") ](https://www.youtube.com/watch?v=A1_hctNWNhE) Here my stripboard layout > [@Verified Stripboard Layouts!](https://lookmumnocomputer.discourse.group/t/verified-stripboard-layouts/81/400): > > Dual Balter Gate Delay from NLC Pics, schem, video … DUCKING SIDE CHAIN original schem from [Juanito Moore](https://www.instructables.com/Freestyle-High-Fidelity-Ducking-Circuit/) Pics & demo video of my build here ---
**Author:** ![jaradical](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jaradical/32/12069_2.png) [@jaradical](https://lookmumnocomputer.discourse.group/u/jaradical)\ **Post date:** [November 6, 2021, 11:03am UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4100 "2021-11-06T11:03:36Z")
I don’t really do strip boards, but I love it when @Dud drops a new verified layout because I get to hear another rad new patch of his! ---
**Author:** ![Jos](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jos/32/151_2.png) [@Jos](https://lookmumnocomputer.discourse.group/u/Jos)\ **Post date:** [November 6, 2021, 5:31pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4101 "2021-11-06T17:31:01Z")
Today I added some scales to the front panel of the module I’m working on. To test things out, I ran the K40 on a sheet of paper: ![20211106_173338](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/1/b/1bf10058ff4a1aa695a977619a83df84c9850e13.jpeg) and tried it in a rack for size: ![20211106_174040](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/7/b/7b6ce1f6def8c3d3c99e6ece1f654bfeb2f1a088.jpeg) ---
**Author:** ![jkb](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jkb/32/26136_2.png) [@jkb](https://lookmumnocomputer.discourse.group/u/jkb)\ **Post date:** [November 6, 2021, 7:44pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4102 "2021-11-06T19:44:41Z")
![PXL_20211106_192500388](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/7/d/7d22417db0f639a1e200a8c1367fa6072c5e1f30.jpeg) A new ADSR board with 8 channels and control board for my polyphonic synth endeavor. I wasn’t that happy with my prior 555 based one because of timing issues and voltage control of the parameters didn’t worked out that well. This one is based on the 3310 and is much more reliable. It is inspired by vintage Crumar synths. There is control of all four parameters, gate and trigger input and CV output. Update: like always Kicad and Gerber files can be found on Github: [GitHub - polykit/adsr-3310-8: Kicad schematics and PCB layout for an 8 channel ADSR based on CEM3310/AS3310](https://github.com/polykit/adsr-3310-8) ---
**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:** [November 6, 2021, 8:28pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4103 "2021-11-06T20:28:19Z")
![20211106_1627361](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/6/3/6331f085cdca5fcb5d557050500e47f2eb7addd8.jpeg) just built a couple passives [euro rack] and yes it is missing a jack socket , need 18 have 17 like usual . ---
**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:** [November 6, 2021, 10:32pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4104 "2021-11-06T22:32:43Z")
![20211106_1830361](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/6/3/63d5dc8e3176377d8b18f2834b12ff65e432c156.jpeg) just listening to jams and cleaning the shop tonight , its a disaster area . bear with me if I say stupid shit tonight LOL . ---
**Author:** ![Farabide](https://avatars.discourse-cdn.com/v4/letter/f/ecc23a/32.png) [@Farabide](https://lookmumnocomputer.discourse.group/u/Farabide)\ **Post date:** [November 6, 2021, 11:15pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4105 "2021-11-06T23:15:29Z")
I see a Kosmo format Optic panel is needed 😉 ---
**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:** [November 7, 2021, 12:23am UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4106 "2021-11-07T00:23:53Z")
Working on a trigger sequencer ![PXL_20211107_002027591](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/c/5/c5ebef6a924007c16649269b220dbf5fc6ee1dcb.jpeg) ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [November 7, 2021, 2:25pm UTC](https://lookmumnocomputer.discourse.group/t/my-build-progress/345/4107 "2021-11-07T14:25:14Z")
Today the Ducking Side Chain module from Juanito Moore in the case near all his friends 🙂 pics, video, stripboard here > [@SIDE CHAIN MODULE (Ducking)](https://lookmumnocomputer.discourse.group/t/side-chain-module-ducking/2998/26): > > My finish build [20 - ducking side chain - sound bender (1)] [20 - ducking side chain - sound bender (2)] a little patch slight_smile[https://www.youtube.com/watch?v=u6-yCLnolyg](https://www.youtube.com/watch?v=u6-yCLnolyg) And the verified stripboard here [https://lookmumnocomputer.discourse.group/t/verified-stripboard-layouts/81/400?u=dud](https://lookmumnocomputer.discourse.group/t/verified-stripboard-layouts/81/400) [Previous page](https://lookmumnocomputer.discourse.group/t/my-build-progress/345.md?page=203) [Next page](https://lookmumnocomputer.discourse.group/t/my-build-progress/345.md?page=205)