This past year, I bought the Erica Synths DIY EDU system kits and apart from one module i had to replace, had a solid experience building and learning to solder the kits. I then decided to try something different and purchased a PCB and Panel for the DrumBs module by circuitbendersUK. I got the list of parts for the build from them and have been trying to get a list together to buy the components on Digikey and I feel like I am going insane.

I have managed to get a lot of the parts added to my list but it has been the most tedious process and I am wondering if there is like a dummy guide for doing this. I tried converting the PDF to excel so that I could upload a csv doc to their BOM tool, but its not formatted in any way that seems to vibe with their system. Am I doing something wrong here or is this just always going to be a very tedious (and confusing) process? I am just afraid i will do all this work and then somehow use one incorrect part and ruin the whole thing. There's just so much to keep track of, esp for a beginner.

Here is the link the the guide in case its helpful at all in answering my question: https://www.circuitbenders.co.uk/tutorials/drumBs%20build%20guide%20eurorack.pdf

Hi, i'm working on building a power supply that can give me +15v, +5v, 0v, -5v, and -15v.

The first screenshot is a schematic that I have successfully used before to run a circuit off of 16vac to create a +-15v supply, but I'm about to start work on a circuit that will need +5v and -5v as well. I didnt design the first circuit, I just took it from a larger schematic of an effect pedal that had similar power requirements to what I need, and so I'm not fully certain how adding other voltage regulators might mess with the balance of things.

I dont want to mess up with power stuff so thought I would check here - I'm wondering if the schematic in the 3rd screenshot will work ok? I basically just took the original circuit and added the datasheet circuit (2nd photo) from the L79xx series of voltage regulators. Is there a more efficient/better way to do this?

I am also not sure if I should include D7/D8/C21/C22 or if i should leave them out. I was thinking maybe C15/C16/C17/C18 will suffice and adding more capacitors in parallel could increase the overall capacitance in a way that could cause issues. Also, since the datasheet circuit uses the example of the L7812/L7912 instead of the L7805/L7905, should I use different capacitor values for C21/C22 if I do need to include them? Any help or advice is much appreciated! Thanks in advance for any help or input that anyone can offer

Hi! RED SEA generates continuously evolving MIDI Control Change modulation and step-sequenced notes, controlled by one of four algorithmic engines. It has a 128×32 OLED display, one encoder, four buttons, and standard DIN MIDI in/out. Built for hardware platform ESPidi by Eugene Carlo

• FOG — Morphing LFO engine (sine, triangle, or square). The SHAPE parameter changes the waveform itself rather than just skewing it: on sine it adds harmonics, or in the other direction clips the signal and adds noise; on triangle it shifts continuously toward a rising or falling sawtooth.
• SUN — refraction delay engine. When a parameter's value would exceed its range, it triggers a series of echo repeats instead of simply clamping, each one landing at half the previous interval. If a sequencer note fires on the same tick the echo series starts, the echoes also retrigger that note, transposed further with each repeat.
• RAIN — stochastic modulation engine. The four parameters can drift out of sync with the shared clock independently, occasionally affect a neighboring parameter, and be interrupted by randomized events that force a parameter to its minimum or maximum.
• SNOW — euclidian based random freezer. Mutation triggered by a Euclidean rhythm instead of a fixed interval. Each hit can also freeze or unfreeze any parameter on the device, including the engine's own parameters.

Features

• Four algorithmic engines (FOG / SUN / RAIN / SNOW), each with four dedicated parameters
• 16-step sequencer (note, CC, a third assignable destination, per-step retrigger) with external or internal clock
• Performance BYPASS and FREEZE modes, engaged on button press
• MIDI Learn: captures a CC number from the next incoming Control Change message
• Per-parameter freeze, independent of the global performance modes
• Settings are written to flash and persist across power cycles

Full documentation here:
Page on itch: https://3apb.itch.io/red-sea
Github: https://github.com/Cirocular-Vlasenko-Daniil/Red-Sea/tree/main

Some context, I'm completely new to the world of synthesizers. I'm interested in putting together something that would let my kids fiddle with things and make some fun "music".

We have the Korg x Little Bits kit, which is fun, but it feels a bit limited, and unless you put the right components in the right order, you don't typically get any sound. The keyboard module is also hard to use. And the speaker is stuck on max volume, which can be grating.

I'm okay with soldering, I'm decent with 3D modeling and 3D printing, so I imagine I could design and print cases and such.

We have a keyboard, but I don't know how to make that interface with a synthesizer module. Do you need an amp/speakers on top of a synthesizer? I'm also open to drum sequencers (I think that's the right term) if that's a more self-contained starting point.

Where do you think I should start? I know stuff can get pricey pretty quickly, so I'm hoping not to break the bank. Is there anything in say 50-200 CAD range that could be a functional beginning?

I found this https://moogaudio.com/products/erica-synths-edu-diy-drum-sequencer?srsltid=AfmBOooOVxXDv8RrjxCsUnRxu6zNGMahlH3gzNALllnokbCPKg8qQso8

What else (if anything) would be needed to actually generate drum sounds?

Thanks for taking the time to help a noob!

So I used Klear Concepts Contact Cleaner on my Roland TR-606 and my Mackie Microseries Mixer to clean up some scratchy potentiometers. I waited a day and then used the DEOXIT F100L. Now some of the pots have been stripped of their grease since they are noticeably less resistant than others. I just bought some DeoxIT fader grease to apply to the pots that are less resistant but not sure if that would work or make the problem worse. Has anyone else had a similar issue?

Because some folk asked.

The closest I get to a permanent setup is the top row, consisting of a 4069 filter [soon to be voltage controlled], 5sum mixer, A.O.Clock & a revised PSU. I've recently started fitting JST connectors to everything, I got tired of nudging loose power wires and having everything reset.

Below is a Glitchstorm MK2 with cv input, a Hagiwo GenSeq, a Hagiwo Sync_LFO programmed as another generative sequencer, a Hagiwo Random Trigger & a Hagiwo 2040 VCO. These modules get changed all the time.

All run from a 12v mains adapter that also powers a cheap car amp that feeds 2 vintage wharfedale speakers under the table.

A dual buffered multiplier and a dual guitar pedal interface.

The multiplier is built from the Eddy Bergman design.

The pedal interface was inspired by the AI Synthesis module, but modified to have two independent channels, and a bypass switch to allow for quick switching between clean signal and pedal affected signal.

Hello everyone, While restoring and old lowrey organ i must have touched something in this board and now this is what i get. I been looking at it for a couple hours and dont know what could be causing it. This section worked allright before i unscrew the board, now i get this uncanny noise mixed with the notes or nothing at all. Has anybody worked on one of these or simmilar? Have a great day thanks.

Built in arduino sampless in c++

Based off the minipop tutorial found online

So I've being creating patches for my ESP32-S3 Polysynth, and also doing a little bit of multitracking with it, as it is not multitimbral - the ESP falls over if you push too hard!
Anyway the clip shows off what it sounds like, and also gives some of the specifications.

Next stage is getting the front metalwork panels made up, now I've decided what all the controls are doing!
Headphones on, volume up and enjoy:)

I'm cooking up my dream drum computer/controller. It is 100% tied to my own needs. Still; I'm super curious how you'd approach some of the design problems I faced.

This'll be a midi-first controller connected, meaning all the controls and displays will be interfaced via midi first; so it can always expand to controlling:

• a custom drum setup in VCV rack, Ableton, Max, etc.
• an Elektron box
• a Daisy Seed inside running a drum machine synthesis.

It doesn't contain any sequencing, that'll be done via my Oxi One or Elektron box. I'm not entirely sure I'll be able to do parameter locking, but that might just be a design challenge that I could work out when I have a standardized way of sequencing it.

I've made a huge midi controller in the past which I use constantly (2nd picture). One thing I don't like about that is that it is "function-less"; a bank of 72 controls (6x12). Since I love hands-on controls of my drums (sequencing and playing) I wanted to make a midi-controller that is very much tied to one function.

Edit: Yes the 2nd delay effect should say Reverb, wrong label.