New Power Supply Modules for PCB Mounting in stock

We now have several new power supply modules available. All of them operate with an input voltage of 85VAC to 255VAC at 50Hz or 60Hz, thus covering worldwide mains power networks.The power ratings and output voltages are as follows: All modules have an MTBF of 10,000 hours and operate within a temperature range of -20°C […]

Making self hosted web user interface for BME280 temperature, humidity and pressure sensor for ESP32-POE, ESP32-C6-DevKit-Lipo and ESP32-C3-Devkit-Lipo with ESPUI

When building an ESP32 project controlled through a self-hosted web interface, one of the most boring and repetitive tasks is creating the user interface. Several projects aim to simplify this process. One popular option is ESP-DASH, but the open version is quite limited, and the Pro version—required for practical use—is paid. Fortunately, there are several […]

Streamlining Your Digital Dash: How the Bridgetek EVE Controller Empowers STM32 Designs

For many engineers, the leap from basic character displays to a full-color Graphical User
Interface (GUI) feels like a daunting hardware hurdle. When the FS-3 Formula SAE team began designing their 2025 car, they hit a common roadblock:
How to drive a high-resolution 5” display without overhauling their existing STM32-based architecture.

The solution wasn’t just in the pixels—it was in the silicon. By choosing the CFA800480E3-050SN, they utilized the integrated Bridgetek (EVE) display controller.

Standard “dumb” displays require the host microcontroller (MCU) to handle every pixel
calculation, frame buffering, and refresh cycle. For an STM32 already busy managing vehicle
telemetry and...

Secure silicon by design

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Silicon Commons: a process for open silicon

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lowRISC’s vision for open silicon

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Automatic WS2812 Characterization

Now, over the course of more than a decade, I spent quite some time manually investigating WS2812 addressable RGB LEDs and their clones. Why not automate this?

The CH32V003 is ideally suited for this task, as it offers 5V compatibility and high resolution timers with DMA that can generate testing signals and evaluate the response. There are still some rough edges, but I will keep this as a quick hack for now.

Take a look at the full repository here and a high level summary of my findings here.

Exploring a Modern SMPTE 2110 Broadcast Truck With My Dad

In October, my Dad and I got to go behind the scenes at two St. Louis Blues (NHL hockey) games, and observe the massive team effort involved in putting together a modern digital sports broadcast.

I wanted to explore the timing and digital side of a modern SMPTE 2110 mobile unit, and my Dad has been involved in studio and live broadcast for decades, so he enjoyed the experience as the engineer not on duty!

The first good Raspberry Pi Laptop

Ever since the Raspberry Pi Compute Module 5 was introduced, I wondered why nobody built a decent laptop chassis around it.

You could swap out a low spec CM5 for a higher spec, and get an instant computer upgrade. Or, assuming a CM6 comes out someday in the same form factor, the laptop chassis could get an entirely new life with that upgrade.

Электровакуумные геттеры. Общие положения, классификация, первые газопоглотители

Рассмотрев газопоглощение и газовыделение электровакуумных материалов [1], мы пришли к неминуемому и неутешительному выводу: без большой работы по очистке и извлечению газов из металлов, стекла, слюды и керамики в радиолампах, срок жизни готовых приборов будет весьма недолгим, а параметры неутешительными. Специальный же элемент в лампе — газопоглотитель, иначе геттер, появляющиеся нежелательные газы связывает, существенно продлевая жизнь электровакуумным приборам (ЭВП) и стабилизируя их электрические характеристики. Геттер, в сущности являясь местным миниатюрным одноразовым высоковакуумным насосом, позволяет обойтись при изготовлении массовых ламп их быстрой и сравнительно неглубокой откачкой, радикально снижая стоимость производства и цену готовых приборов. Так как же работает геттер, какие они бывают, что за геттеры...