# Thomas Henry BD++ **URL:** \ **Category:** DIY STUFF\ **Created:** [April 11, 2020, 5:02am UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585 "2020-04-11T05:02:23Z")\ **Posts on this page:** 20\ **Page:** 3
**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:** [June 20, 2020, 2:10pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/41 "2020-06-20T14:10:48Z")
Also the mod section looks like a cute cat face with eyelashes and I can’t unsee it and it’s going to change 😂 ---
**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 20, 2020, 2:14pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/42 "2020-06-20T14:14:06Z")
Now that you mention it… [NSFW](https://walkypedia.fandom.com/wiki/Blowjob_Cat) ---
**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 20, 2020, 3:46pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/43 "2020-06-20T15:46:02Z")
No worries, the BD++ has been on my list since forever, so after all this talk I’m ~94% done with a mini module version of it (let’s just say fitting the entire thing in my standard 70×30 form factor is a bit of a challenge 😃) EDIT: 100% done, PCB order placed. Will post photo when I have a test build, if I remember. ---
**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:** [June 20, 2020, 5:09pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/44 "2020-06-20T17:09:16Z")
70 x 30 would be very tough. Would have to ditch the big jacks and all the mods id imagine. I’m messing right now with a 150mm layout and it might be getting out of hand, so many options when probably half the time you just need any old kick sound 😂 going to play with the idea some more. Still having fun ---
**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:** [June 20, 2020, 5:17pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/45 "2020-06-20T17:17:04Z")
![150mmbass](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/12a8f226b1744f48b125a0210e06da6aae7e1340.png) noodling around…larger 28mm (28 feels more ‘kosmo’ anyway) knob circle and attempt at resorting to what makes more sense to me ---
**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:** [June 20, 2020, 6:36pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/46 "2020-06-20T18:36:05Z")
I like where it’s going 😍. I would just call it “Shape”, though. I’ll take it either way, of course ---
**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 20, 2020, 7:44pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/47 "2020-06-20T19:44:27Z")
> [@CTorp](#): > > 70 x 30 would be very tough. I managed (with a bit of trickery), but forgot two decoupling caps in the first round, and had to redo some things to squeeze them in (yes, I use this absurd form factor as a challenge, not because it’s practical 😀) ---
**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:** [June 20, 2020, 11:19pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/48 "2020-06-20T23:19:51Z")
You know it’s tight when adding two tiny caps requires a significant redesign. You still use all thru-hole? ---
**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 21, 2020, 1:13am UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/49 "2020-06-21T01:13:33Z")
Yep. Some people solve sudokus and other brainteasers, others entertain themselves by squeezing in 50-60 thru-hole components on ~20 square centimetres 😃 (Main issue with the caps was that they intruded on the space that was reserved for the “BASS++” label.) ---
**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:** [June 21, 2020, 9:12am UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/50 "2020-06-21T09:12:44Z")
Nice labels. How did you make those? Are they stickers of some sort? ---
**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 21, 2020, 11:02am UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/51 "2020-06-21T11:02:25Z")
The photo is from the MW thread where the stripboard layout was first posted. I guess it could be inkjet on transparent film, but looking at the video it looks more like toner transfer. [![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/2/2284a69a74bbbf7c17dded16e8b474cc54ee0a01.jpeg "DIY stripboard modular TH bass drum ++ demo") ](https://www.youtube.com/watch?v=Vwv-qxQHbzo) ---
**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 21, 2020, 11:08am UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/52 "2020-06-21T11:08:01Z")
I’ve made one attempt at toner transfer and it came out about one thousandth as good looking as that. ---
**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:** [June 21, 2020, 6:16pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/53 "2020-06-21T18:16:50Z")
![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/a1b45ce650f06c6cccfbb07bba5d388ed0c2e80b.jpeg) Built @ChristianBloch’s strip board version, minus volume. Works like a charm first time around. Going to add in the wave shape. Straight out of the gate I know the sensitivity knob has to stay in full size on any faceplate I end up making. It significantly and pleasantly changes the character of the sound, more so than the impact tone IMO. I think the decay pot is backwards. To the left should be very short to the right very long, right? ---
**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:** [June 21, 2020, 6:40pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/54 "2020-06-21T18:40:56Z")
Aw geez 🙄. I’ll update the layout again when I find a minute. Glad it works, though! ---
**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:** [June 21, 2020, 7:18pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/55 "2020-06-21T19:18:25Z")
![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/7/7face615935645a3cfe9222aad0b9b9c1c9b6eb1.jpeg) Thanks @ChristianBloch and @d42kn355, I can dig it. Mini bd++ Looking forward to the pcb even more, the sound is very nice ---
**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:** [June 21, 2020, 8:42pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/56 "2020-06-21T20:42:19Z")
Actually, now that I think about it, shouldn’t the unused leg of the decay pot also be hooked back to the wiper? It’s acting as a variable resistor in the schem ---
**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 21, 2020, 8:56pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/57 "2020-06-21T20:56:50Z")
It doesn’t really matter when you build stripboards, but it’s common practice for PCB mounted potentiometers (you want to solder it anyway for physical stability, so might as well connect it, and it also limits the max resistance should the wiper glitch out, but otoh if that happens odds are your module is unusable anyway 🤷‍♀️ ). (I wish people would stop using that stupid symbol; it’s not like it takes you any longer to use a 3-terminal symbol for a 3-terminal device, and you save a bit of time for everyone who tries to build your circuit…) ---
**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:** [June 21, 2020, 9:09pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/58 "2020-06-21T21:09:48Z")
What do you reckon we do about the pots? Can you even get A10ks and 500k alpha 9mm pots? Panel mount and wire? See if I can find/make a footprint for the other type that will work with the alpha pot spacing? ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/8/8068bc3d27fa5d3d699882535f4f582ef2d916d6.jpeg) ---
**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 21, 2020, 9:17pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/59 "2020-06-21T21:17:18Z")
> [@CTorp](#): > > Can you even get A10ks These? > **[10K OHM Logarithmic Taper Potentiometer Round Shaft PCB 9mm](https://www.taydaelectronics.com/10k-ohm-logarithmic-taper-potentiometer-round-shaft-pcb-9mm.html)** > > ALPHA - Get It Fast - Same Day Shipping > [@CTorp](#): > > and 500k alpha 9mm pots? These? > **[500K OHM Linear Taper Potentiometer Round Shaft PCB 9mm](https://www.taydaelectronics.com/500k-ohm-linear-taper-potentiometer-round-shaft-pcb-9mm.html)** > > ALPHA - Get It Fast - Same Day Shipping ~~[Search results for: '500k ohm logarithmic taper potentiometer round shaft pcb 9mm~~'](https://www.taydaelectronics.com/500k-ohm-logarithmic-taper-potentiometer-round-shaft-pcb-9mm.html~~) which are out of stock until late August, but they’re there. (I’m fine with panel mount, allowing one to use a variety of options.) ---
**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:** [June 21, 2020, 9:18pm UTC](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585/60 "2020-06-21T21:18:34Z")
They are always out of stock. And most other places only carry the b10s and b100 [Previous page](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585.md?page=2) [Next page](https://lookmumnocomputer.discourse.group/t/thomas-henry-bd/585.md?page=4)