Loopy

Loopy (LP8+) is a DIY 8 loop programmable guitar pedal switcher with support for MIDI commands.

Loopy is designed around easy-to-find components:

• 1 atmega328(p) micro controller
• 2 74HC595
• 8 relays
• several LED
• several audio jack

This page is a collection of documents that can help you build your own looper.

FAQ

How does it work?

Have a look at the Manual for more info. There is a short video there too. I will try to film more to show all the available features.

Can you guide me through the build?

Please refer to the How To Build Loopy page.

Where can I find a PCB?

Please contact me if you need a PCB: I will try to have some available as long as there is demand for it. Alternatively, you can check my eBay profile.

Why no display?

Rectangular holes (of good quality) are generally quite hard to make unless you have specialised tools, so I have put more effort on dislaying the status using LED, which only require round holes.

Does the signal go through a buffer?

No. Loopy doesn't contain any signal buffer: this gives the final user the flexibility to choose whether to have or not a buffer.

Is this an Arduino project?

No. While the micro controller used in this project is the same of the Arduino UNO, nothing of the Arduino platform is used: no bootloader, no USB port, no libraries. In fact, all the code is written from scratch in C++.

Can I build this project and sell it?

No. However, I could be interested in discussing a partnership. Please get in touch.

Can I have the source code of the firmware?

No. At the moment, I have decided to keep the source code private. However, HEX file for the firmware is available in this repo, and you are free to program your own chip with it. Check the instructions on how to setup your microcontroller.