Bluetooth Low Energy and the STM32WB55 MCU

I’m a subscriber to ST’s regular email newsletter and though most of it isn’t interesting to me I did notice that in one of the recent editions they were promoting their wireless range of STM32-based MCUs. As a big fan of the STM32 this caught my eye and co-incided with some...

Fixing the USB microphone mute button click

In my previous article I documented the design and build process of my USB microphone based around an STM32F446 MCU. If you haven’t already read it then it’s probably worth catching up now before reading the rest of this article so that you have the necessary context. The...

A USB microphone for online meetings

Here in the UK the new reality of working in the IT business over the past year has been that we’re all at home working remotely over virtual desktop connections and for someone engaged in software development this is a setup that works well. Having to commute 90 minutes each way into...

A development board for an STM32G081 MCU

I’ve been an avid user of ST’s F0 series ever since it was launched. The 48MHz Cortex M0 is almost always the perfect MCU for every project that I tend to build and it’s so easy to program and debug that, for me, it’s the default answer to ‘which MCU should I use...

How to use a 4k TV as a computer monitor Mar24

How to use a 4k TV as a computer monitor

I like big, high resolution monitors. The bigger the better. I can’t understand how so many young developers and engineers seem to be content to peer into the tiny screens on their Macbooks that offer only a few visible lines of code in perhaps two simultaneous columns, with any...

Directly driving a 7-segment LED display with the STM32

Seven segment LEDs are an extremely cost effective way to add a large, bright and very readable numeric display to your project. Displays similar to the one pictured above can be had for as little as 50 cents each on ebay in the common heights of 0.56″, 0.36″ and 0.28″. You...

Process automation: another RTD sensor board

In a previous article I described the design and build of a temperature sensor board based around a high precision LTC2986 part from Linear Technology. The project was successful so you may be wondering why I’m bothering to design another board when the LTC2986 probably cannot be...

Process automation: temperature sensing

My previous article documented how I designed and built a PCB that hosted three relays and a triac that could be mounted inside a PC case and connected up via the USB bus for host control using simple commands. The relays and triacs board That board is of course the output part of the system,...