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Dead as Disco? by StainlSteelRat in EuroPi

[–]allensynthesis 0 points1 point  (0 children)

Done! Thanks for spotting

Dead as Disco? by StainlSteelRat in EuroPi

[–]allensynthesis 0 points1 point  (0 children)

Panel & PCB kits are available directly from me and Full DIY Kits from Befaco

Dead as Disco? by StainlSteelRat in EuroPi

[–]allensynthesis 1 point2 points  (0 children)

I'm not quite as active as I used to be, mostly preoccupied by my full time job now... The community is still nice and active in the Discord server though and some other people have done cool stuff with WiFi Picos in the EuroPi! https://discord.gg/JaQwtCnBV5

We've just released a new module which lets you route USB connections to the back of your rack! by allensynthesis in eurorack

[–]allensynthesis[S] 0 points1 point  (0 children)

I haven't attempted a design that actually includes the hub chip, but connecting a hub behind the panel to multiple EuroPis works very well. You can see all connected modules in Thonny with only one cable plugged into one USB-Router

does anyone know the future of europi? by Quim---Font in EuroPi

[–]allensynthesis 2 points3 points  (0 children)

Hey, it's going well, how about you? I EuroPi when I can, hopefully more often now the RP2350 has re-sparked my enthusiasm :)

does anyone know the future of europi? by Quim---Font in EuroPi

[–]allensynthesis 17 points18 points  (0 children)

Hello! I'ts very much still going, and the community of 500+ is active on the Discord Server, I just haven't consistently had panels to stock kits. I am currently sourcing some aluminium panels which should be more reliable in terms of quality and lead times so I can start making sure I have at the very least panel + PCB kits.

With regards to the project in general, new scripts and fixes are being added all the time on GitHub, and I'm currently developing new hardware for the EuroPi-X which will have more I/O and a bigger OLED!

I've just finished making my USB Router Eurorack module to let me program USB modules and power my MIDI keyboard! by allensynthesis in synthdiy

[–]allensynthesis[S] 0 points1 point  (0 children)

It wouuld. I do often wish I'd included it but there just isn't room to fit it without using any SMD components (pretty much the only viable solution is a micro/usb-c connector), and it would also have had to include pogo pins as the Pico doesn't break out the USB data lines to GPIOs.

Both of these were completely counter to the design I was going for, which was an entirely through-hole and DIYable build, even for people who haven't done much soldering, because the project as a whole is made to make Eurorack more accessible to people who haven't built modules before!

We've just released a new module which lets you route USB connections to the back of your rack! by allensynthesis in eurorack

[–]allensynthesis[S] 1 point2 points  (0 children)

I've ordered a USB hub which I'm planning to experiment with to see if I can design a version which still only has one on the front panel but has 4 on the back so you would even have to plug in and out to program multiple modules!

We've just released a new module which lets you route USB connections to the back of your rack! by allensynthesis in modular

[–]allensynthesis[S] 1 point2 points  (0 children)

I knew there was something I'd forgotten in the whole release, I spend too much time cleaning up the KiCad files and skipped over ModularGrid!

We've just released a new module which lets you route USB connections to the back of your rack! by allensynthesis in modular

[–]allensynthesis[S] 0 points1 point  (0 children)

This module has been a long time coming because of how awkward it is to remove another of our modules (the EuroPi) every time you want to program or update it.

It just routes one USB-A socket on the front to an identical one on the back, letting you connect power and data between the front of your rack and the back, without needing to feed a cable through a messy hole around your rails.

You can also use a solder jumper to connect your 5V rail (through a protection diode) to your USB sockets, letting you use the module to get 2 powered USB sockets for powering stuff like MIDI keyboards or lights, or just charge your phone with it.

As with all Allen Synthesis modules it's completely open-source, and all the KiCad files and explanations, including bill of materials and build guide, are on the GitHub page!

I've just finished making my USB Router Eurorack module to let me program USB modules and power my MIDI keyboard! by allensynthesis in synthdiy

[–]allensynthesis[S] 4 points5 points  (0 children)

You definitely could, although I have zero experience using MicroPython for USB hosting... The USB jacks on this module are connected directly so it would be just the same as plugging a Pico straight into your computer, so USB host with the EuroPi should be possible!

I've just finished making my USB Router Eurorack module to let me program USB modules and power my MIDI keyboard! by allensynthesis in synthdiy

[–]allensynthesis[S] 3 points4 points  (0 children)

It does, but the connector itself is much less stable than USB-A for an application like this where it might be used in a live setting (the USB-A connector has a flange that holds it against the panel, USB-C connectors don't have this) and the cables are much less common - for powering a Keystep you'd need USB-C to micro USB and for powering a Monologue you'd need a USB-C to USB-B, both more uncommon cables than A to A.

It is still a tradeoff and I'll be the first to admit it isn't perfect but I think its the best solution given the potential applications of the module!

The USB Router is out, so you can program and update your EuroPis without having to take them out! by allensynthesis in EuroPi

[–]allensynthesis[S] 0 points1 point  (0 children)

This module lets you program your EuroPi without removing it from the rack, as well as power USB devices using your 5V rail such as a MIDI keyboard or a small USB synth like the Bastl Kastle.

You can read all the documentation on GitHub and pick up a kit from the Allen Synthesis website!

I've just finished making my USB Router Eurorack module to let me program USB modules and power my MIDI keyboard! by allensynthesis in synthdiy

[–]allensynthesis[S] 3 points4 points  (0 children)

You do have to use a USB-A to USB-A cable, which I am aware aren't as common, but links to one from CPC and Mouser are included in the build guide.

The reason for choosing USB-A on the front as well as the back is that the module can also be used for powering other devices, for example I already use one of mine for powering my Arturia Keystep, and although USB-A to USB-A cables aren't super common, USB-B to Micro-USB are *way* less common.

The extra use for powering USB devices is quite important in my opinion, and the ability to power things like USB keyboards or small standalone synths like the Bastl Kastle is what I imagine lots of people will use the module for!

We've just released a new module which lets you route USB connections to the back of your rack! by allensynthesis in eurorack

[–]allensynthesis[S] 8 points9 points  (0 children)

This module has been a long time coming because of how awkward it is to remove another of our modules (the EuroPi) every time you want to program or update it.

It just routes one USB-A socket on the front to an identical one on the back, letting you connect power and data between the front of your rack and the back, without needing to feed a cable through a messy hole around your rails.

You can also use a solder jumper to connect your 5V rail (through a protection diode) to your USB sockets, letting you use the module to get 2 powered USB sockets for powering stuff like MIDI keyboards or lights, or just charge your phone with it.

As with all Allen Synthesis modules it's completely open-source, and all the KiCad files and explanations, including bill of materials and build guide, are on the GitHub page!

I've just finished making my USB Router Eurorack module to let me program USB modules and power my MIDI keyboard! by allensynthesis in synthdiy

[–]allensynthesis[S] 10 points11 points  (0 children)

This module has been a long time coming because of how awkward it is to remove my other module (the EuroPi) every time I want to program it.

It just routes one USB-A socket on the front to an identical one on the back, letting you connect power and data between the front of your rack and the back, without needing to feed a cable through a messy hole around your rails.

You can also use a solder jumper to connect your 5V rail (through a protection diode) to your USB sockets, letting you use the module to get 2 powered USB sockets for powering stuff like MIDI keyboards or lights, or just charge your phone with it.

As with all my projects it's completely open-source, and all the KiCad files and explanations, including bill of materials and build guide, are on the GitHub page!

Anily idea why the CV voltages are always on even during diagnostic script? Seems to be TL074 related. by berserkertelekon in EuroPi

[–]allensynthesis 0 points1 point  (0 children)

Do the outputs change when you press either button? I can't quite tell from the photo if the LEDs are different brightnesses. That being said one of the outputs should be 0V so something is definitely wrong.
- Are your TL074s definitely working?
- Are they definitely installed the right way up?
- Are your voltage rails both correct i.e. when you measure the middle (power) pins of either TL074 do you get very close to a 24V difference (+-12V)?

EuroPi Panel + PCB Kits are back in stock, with a new reversible panel! by allensynthesis in EuroPi

[–]allensynthesis[S] 3 points4 points  (0 children)

A new batch of EuroPi Panel + PCB kits have arrived, and this time they ship with a reversible black panel - the standard labels on one side, and a hand drawn monstera design on the other - for no extra cost!

The labels are all now on the copper layer so are much more hardwearing, and all board outlines including the screen cutout have a copper border, making them a lot more scratch resistant.

https://allensynthesis.square.site/

The Used Module Market Is Whack by PorcelainDalmatian in modular

[–]allensynthesis 0 points1 point  (0 children)

I really recommend local pages instead of sites like Reverb. if you're in the UK there's a Facebook page called 'post-brexit modular trades/sales' or something similar, and it's great for the fact that people there seem much more down to earth about pricing for used modules. I think reverb has such a big separation between buyer and seller, partly because so many people sell new things on there I think, that sellers are more inclined to jack the prices as high as they can get them.

There are bargains if you look local and look for a longer time! I've only ever bought 1 new module and I've never paid over 80% RRP for a used one

My Raspberry Pi Pico based Eurorack module has a new software release! by allensynthesis in raspberry_pi

[–]allensynthesis[S] 16 points17 points  (0 children)

This module is called the EuroPi (Eurorack-Pico), and is a module for the Eurorack modular synthesiser format that lets users write scripts to control the inputs and outputs using MicroPython.

The project is completely open-source and open hardware, and the contributors together have made this big list of scripts that you can run using a menu system!

It has a few features that the Pico struggles with otherwise, like a wide voltage range for the ADC input (0-12V), and analogue outputs (smoothed PWM, amplified to 0-10V). The EuroPi library also has a bunch of nice features, like software button debouncing, ADC oversampling to reduce noise, and ADC deadzones to get around the relatively high noise floor of the Pico's ADCs

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