Why engineers choose MSD
Not just a kit. A learning experience.
Every product ships with real design files, engineer-written documentation, and the kind of depth you won't find anywhere else at this price.
Docs that actually teach
Every kit ships with a full design guide — not just a BOM. You'll understand why each component is there, how the circuit works, and what happens when it doesn't.
Real mixed-signal circuits
Analog meets digital. Op-amp stages, ADCs, I²C buses — our kits live in the interesting territory where most learning materials stop short.
Hands-on by design
Choose pre-assembled or full DIY kit. Make mistakes, probe signals, read the schematic. That's how engineers are made — not by following colour-coded guides.
Ready to stop following instructions and start understanding circuits?
Browse the KitsShop by Level
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Beginner Electronics DIY Kits — Learn to Solder & Build Circuits
Start your electronics journey with our beginner PCB kits. Learn through-hole soldering,...
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Intermediate Electronics DIY Kits — I2C, OpAmp & Mixed Signal
Level up with intermediate PCB kits covering I2C bus, op-amp circuits, and...
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Advanced Electronics DIY Kits — SMD Soldering, ADC & STM32
Push your skills with advanced PCB kits: SMD soldering challenge, discrete ADC,...
Featured Kit
My First uC DIY Kit
The person behind MSD
Hi, I'm Sergio. I built this because I had to.
I'm an Electronics Engineer and I started Mixed Signal Development out of frustration. Not with electronics — I love that part — but with the kits that kept landing on my bench: a bag of components, a blurry schematic if you were lucky, and zero explanation of why the circuit worked.
If I could have had kits like this when I was starting out, I would have learned twice as fast.
So I started designing my own. Every product I ship is the kit I wish I'd had at the start of my career. Real schematics. Firmware you can actually read. Documentation that explains the trade-offs, not just the steps.