Take a look at my work

My work is a colourfiul job. A few examples tell more than just words.

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The hardware design process must be flexible. Not all requirements are always known from day zero. The changes are necessary, and I always keep in mind plans B or even C.

Papírová vlaštovka


I focus on the simplicity of each design. A strong focus is always on removing complexity and keeping the necessary parts. The result is higher reliability and a longer product lifetime.

Vesmírná družice


A part of my time is dedicated to the market observation. All renowned silicon manufacturers present their new products frequently and I focus on keeping touch with them. I like to learn new things and it is one of my

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My latest work

S-parameters explained

Understanding basic S-parameters

➡️↩️[ DUT ]⬅️ 𝐖𝐡𝐚𝐭 𝐚𝐫𝐞 𝐒-𝐩𝐚𝐫𝐚𝐦𝐞𝐭𝐞𝐫𝐬? 1️⃣ Scattering or shortly 𝐒-𝐩𝐚𝐫𝐚𝐦𝐞𝐭𝐞𝐫𝐬 are defined as the ratio of the outgoing wave to the incoming wave at a port of a network. 2️⃣ 𝐒-𝐩𝐚𝐫𝐚𝐦𝐞𝐭𝐞𝐫𝐬 are typically measured using a network analyzer (VNA)....

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Assembled PITAYA PCB


🆕 𝐏𝐈𝐓𝐀𝐘𝐀 𝐛𝐨𝐚𝐫𝐝 𝐕𝟎𝟔 𝐢𝐬 𝐛𝐨𝐫𝐧! Yesterday, I wrote about the DAC11001 board in its 6th revision. In version 05, I moved mounting hole positions on this board. I didn’t have a chance to synchronise both designs until this revision...

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Fresh new assembled PCB


🆕 𝐈 𝐚𝐦 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐨𝐧 𝐭𝐡𝐞 𝟔𝐭𝐡 𝐫𝐞𝐯𝐢𝐬𝐢𝐨𝐧 𝐨𝐟 𝐭𝐡𝐞 𝐃𝐀𝐂𝟏𝟏𝟎𝟎𝟏. Why on Earth do I need another revision? Well, because I moved mounting hole positions on a mating board and did not have a chance to synchronise both designs....

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Connector removal process

Single pin at a time

🎩🎩🎩 Don’t try to unsolder the entire connector! Here is a tip for all who need to unsolder the multi-pin connector from the boards. First thing first… ❗️ The value of the assembled PCB is much higher than the cost...

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Happy New Year 2024

2024: Create, Innovate, Excel!

What to Create, Innovate, Excel? Sustainable Electronics–no batteries, no waste. Wearable Tech Innovations–create something you can be in touch all the time IoT Smart Home Devices–communicate! DIY Robotics Kits–let’s let robots work instead of us. Energy Harvesting Devices–energy is everywhere,...

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RedPitaya STEM lab board on a carrier board

Star Trek

🛰️🛰️🛰️ 𝐒𝐩𝐚𝐜𝐞𝐬𝐡𝐢𝐩 𝐨𝐧 𝐚 𝐜𝐚𝐫𝐫𝐢𝐞𝐫 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 The shared 3D render from #kicad represents my latest RedPitaya carrier, measuring and control board I’ve designed recently. I don’t know why but the picture reminds me Star Trek or similar scifi show pictures....

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LTSpice simulation waveforms

Playing around

🎳🎳🎳 𝐏𝐥𝐚𝐲𝐢𝐧𝐠 𝐚𝐫𝐨𝐮𝐧𝐝 𝐰𝐢𝐭𝐡 𝐜𝐢𝐫𝐜𝐮𝐢𝐭 𝐬𝐢𝐦𝐮𝐥𝐚𝐭𝐢𝐨𝐧𝐬 I am working on a simple test simulation before I move myself to the #PCBlayout job. My goal is to find the simplest, at best, rectifier-less solution for a reliable AC voltage signalisation. Now,...

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Breadboard with simple electronic components

Symmetry always helps

💡𝐒𝐢𝐦𝐩𝐥𝐢𝐜𝐢𝐭𝐲 𝐢𝐬 𝐨𝐟𝐭𝐞𝐧 𝐭𝐡𝐞 𝐠𝐚𝐭𝐞𝐰𝐚𝐲 𝐭𝐨 𝐩𝐞𝐫𝐟𝐞𝐜𝐭𝐢𝐨𝐧 I recently needed to test two AC switches—a flexible check before I sit to the #kicad. I used the breadboard for it. After I built and verified the first one, I mirrored the...

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KiCAD crossed nets

3 minutes from excellence

🕒🕒🕒 𝐑𝐞𝐦𝐞𝐦𝐛𝐞𝐫–𝐘𝐨𝐮 𝐜𝐚𝐧 𝐛𝐞 𝐨𝐧𝐥𝐲 𝐭𝐡𝐫𝐞𝐞 𝐦𝐢𝐧𝐮𝐭𝐞𝐬 𝐚𝐰𝐚𝐲 𝐟𝐫𝐨𝐦 𝐚 𝐝𝐞𝐬𝐢𝐠𝐧 𝐞𝐱𝐜𝐞𝐥𝐥𝐞𝐧𝐜𝐞 ❓Can be the connector pinout changed? 💪 Do it!...

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Colorful Pin headers


🍭🍭🍭 𝐃𝐨 𝐲𝐨𝐮 𝐥𝐢𝐤𝐞 𝐩𝐨𝐩𝐬𝐢𝐜𝐥𝐞𝐬? I don’t, but I have a thing in ones 👇👇👇 Your design can be just more fun and more human. The regular black headers are good but those red or yellow ones lit up your...

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Petr byl členem vítězného týmu na Hackathonu ABB Czech Code Cup www.abbccc.cz.

Tomáš Studeník radikální inovátor a městský hacker www.ceehacks.com

Petr Dvořák is knowledgeable, highly skilled and a pleasure to work with. He is very experienced in hardware designing and firmware developing areas.

Miroslaw Folejewski HW/PCB Designer

I would like recommend Petr as very responsible and gifted specialist in electronics.

Andrey Volkov Enterprise/Solution architect

Let me design for you

My schedule tends to be always full. Send me a quotation and I will answer soon.

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