S1gns Of L1fe did this great introduction and review of my modules. He's such a wonderful ambient music artist and gracefully weaves the modules into play, while creating a song. #eurorack youtu.be/0NjVquImVGY

The making of PMBP boards youtu.be/k4P8GN50qSQ

Introducing the PMBP (poor man's bench power). The PMBP has 4 external power sources for Eurorack, supplying +-12V. Each source has an on/off switch. There are also adjustable +-10V and +-5V supplies. The PMBP is a great tool for the DIY builder or for testing outside of the rack.

Making modules!

Raise your hand if you have ever used a hard copy terminal.

This morning's puzzle. SMD on the front THT on the back.

Todd Barton demoing our Low Road filter and the TZ VCO youtu.be/f3ER2ERlbbs?...

Nice turnout at the PDX Synth and Pedal show!

We're going to be at the PDX Synth Expo, 4/12 - 4/13 Come by and say hello! #pdxsynthexpo #modularsynth #eurorack #synthsky Event information delicious-audio.com/the-portland...

I’ve been busy today making Low Road filters, in preparation for the Portland Synth & Pedal show.

A good way to start the morning. First test of the SSI2144 low pass filter! Success!

New product, the SSI2144 Prototyping PCB! This little board has everything you need to make an analog low pass filter based on the SSI2144 chip. The first 5 customers to user discount code LP50 when checking out will get a 50% discount on the board. www.infinitemachinery.com/ssi2144-prot...

The visitors center was closed on Tuesday. Gee, I wonder why.

TI has a library of great documentation about their products and electronics in general. The naming convention for these documents is, unfortunately, insane. i.e. a document about Surface Mount Tape & Reel dimensions is titled snoa403i.pdf

We took a trip today to the Klamath Wildlife Refuge and encountered this bald eagle and several others.

Next weekend, 3/1 - 3/2, our website will be down for an upgrade. Wish me luck!

Dead Box

I'm working on putting out more video content, so please bear with me as I stumble through process, technique and self-directing. This is short video of how to load an electric CL feeder for a pick and place machine. These are a standard feeder used throughout the industry. youtu.be/13SxzGHJXws

Breakfast for dinner. We were preparing breakfast this morning when the power went out for several hours. We decided to reverse meals.

I was working on a prototype today. I often use this chip puller when working with PDIP chip. I realized today that I’ve had this tool for over 35 years.

I just love how KiCad gives me a 3D transparent view of my board and the inner layers!

My JLCPCB panel order was delivered today. Fortunately I was able to ship it while the $800 tariff threshold was back in place. I was not charged any extra duties. These PCBs are for my SSI2144 filter daughter board.

I just finished reading @niedermeyer.online excellent book, “Ludicrous - The Unvarnished Story of Tesla Motors”. The final chapter can only be described as a prophecy of our current times.

I'm working on a low pass filter using the Sound Semiconductor SSI2144 a reprise of the SSM2044. The SSI2144 uses the same internal circuit as the SSM2044 but incorporates improvements and takes advantage of modern process technology. youtu.be/M218KbKFxY0

Fresh panels arrived today! These are for an updated version of the TZ VCO.

It's funny how Mouser's site has a checkbox when you login to "remember me", yet it forgets you after 5 minutes.

The finished panel is looking nice. Now to add the thru hole parts.

Finished reflow easing out of the oven.

Into the reflow oven goes another panel of SSI2130 boards.

This is the complete SSI2130 PCB, ready for your breadboard. #eurorack #eurorackmodular

A short video of out pick and place machine building our SSI2130 prototyping PCB. youtu.be/Sb2llCjo8RQ

We just got back from a trip to the mountains where the Klamath river was recently un- dammed, allowing water to flow and salmon to run.

My pot stash

This is the SSI2144 LPF daughterboard. This can be used in your own DIY filter project. Once the design is finalized, I’ll be offering these on the website. This board was manufactured by @oshpark.bsky.social

My current project. A LPF using the SSI2144. I created a small daughterboard, shown on the left of the breadboard. This board contains the SSI2144 and supporting circuitry, the core of the project. Everything else is implementing the I/O. #eurorack #modularsynth

I just received this book that I bought from @powells.bsky.social. This book is a gem, full of fundamentals and basics of analog/digital interfacing. Surprisingly relevant for a book printed in 1980.

Anyone remember Byte magazine? I had a subscription way back in the day and still have a box of them. Looking back on the covers gives an interesting perspective.

Lots of rain last night. Snow level appears to be around 4000ft.

Here's a review of our 2131 VCO that is based on the Sound Semiconductor SSI2131. This module is known for its solid performance and stability. Since this review we have updated the module with a new aluminum black panel and new graphics. www.rakt.info/post/infinit...

I’m doing placement testing on my SSI2230 board. This chip has a 0.4mm pad pitch. I’m rather pleased with the results. The photos are from two opposing sides.

A review of our Hexa VCA. Six linear VCAs in a 12HP module! #eurorack #synthsky #modularsynthesis www.sinesquares.net/musicgear/in...

My next project, an SSI2144 filter board.

Working on some changes to the SSI2130 VCO board.

Our latest VCO, the TZ VCO, has true thru-zero FM and a beautiful sine wave output. Lots of waveform options, triangle, saw, square, pulse and sine. Very versatile. www.infinitemachinery.com/tz-vco

Well, it was only a matter of time. Behringer comes out with a Blades copy.

Some information about our EG-2 envelope generator. The EG-2 produces both and ADSR and AD type envelopes. Lots of features in a trim 8HP module.

First sub-freezing morning this fall. The gum tree dropped all its leaves.

A short video showing the features and capabilities of the Hexa VCA. 6 (count them!) VCAs in one 12 HP module.

Two TZ VCOs, both generating sine waves and one feeding into the thru zero FM of the other. The EG-2 is modulating the Wasp filter. #synthsky #eurorack youtu.be/kqIlXhozQ3s

Here’s an inside view of our 2131 VCO. All of our modules are assembled in-house using top quality components.