Prototype Evolution…
Four prototypes which led to the first release
pi-Stomp has launched!
Almost 1.5 years from the original idea and after 5 circuit board prototypes, 4 different enclosure prototypes with 2 machine shops taking my order then closing due to economy/Covid. We’re now stocked with 35 enclosures, and parts bundles. Mouser.com seems fully stocked with the other “half” of the parts. The website, store, wiki and github …
Enclosures are in!
Using the time for a little re-design
Like most everyone these days, my priorities have changed. As I wait for parts to be restocked and my enclosures to be machined, I’ve embarked on a redesign of the true-bypass relay system. Each pi-Stomp! has included 4 SPST reed relays. 14 of the first 16 used worked just fine, two were not switching. Eventually …
So close, then Covid
I had sent off my enclosure CAD specifications for manufacturing. Parts were ordered. pi-Stomp software nearing v1 completion goals. 3 builds complete by me, along with a successful build by a friend using only the wiki instructions. Website/Store was taking shape. I was nearly ready to go public. Then Covid struck. I won’t even compare …
pi-Stomp! Build #2 with enclosure
New build, new board with a few improvements Swapped location of Left and Right jacks (more intuitive) improved signal routing to minimize noise Slight location tweaks to facilitate mounting in enclosure Improved part labels
First PCB Version of pi-Stomp!
Monumental day. All major hardware functionality works! Audio processed thru both Left and Right channels Headphone output works Bypass relays controllable via footswitch LCD shows current Pedalboard / Preset / Tweak param / Tweak value / footswitch mappings and enable state Each footswitch sends MIDI CC and toggles LED ring Tweak Knob sends MIDI CC …
Mod a’la pi
Mod software running on Raspberry pi (not shown) Control board with encoder to select pedalboard/preset plus two parameter tweak knobs Arduino for sending MIDI CC to pi via USB with input from tweak knobs, expression pedal and DIN MIDI jack 24-bit/48khz audio card (blue board) Dual gang volume pot Two true bypass switches for R …
Proof of concept
Raspberry pi running Mod software Audio card hat LCD hat (displaying Pedalboard name and list of mapped parameters) Preamp for guitar input Arduino controller sending MIDI CC via USB with input from a tweak knob, DIN MIDI, and an encoder for program (pedalboard) change