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Posted onMarch 9, 2022Uncategorized

Update to to Brymen 867/9 charging cable #2

by martinLeave a comment on Update to to Brymen 867/9 charging cable #2

The #1 product on my Tindie store in the Brymen 867/869 interface cable. The first version was based on an ATtiny45, but I then switched…

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Posted onFebruary 25, 2022STM32

Testing the range of Nucleo-WB55 boards (OpenThread)

by martinLeave a comment on Testing the range of Nucleo-WB55 boards (OpenThread)

During the design phase of one of my recent projects, I had to pick a radio IC for transmitting data. One of the options which…

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Posted onMarch 21, 2021April 3, 2021STM32

How to automatically get Git tag into STM32CubeIDE code

by martin2 Comments on How to automatically get Git tag into STM32CubeIDE code

One very important aspect of any development is versioning. Sure, for small projects it might not be necessary, but I’ve gotten used to using Git…

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Posted onMarch 3, 2021March 22, 2021STM32

Building a custom ST-Link V2.1

by martinLeave a comment on Building a custom ST-Link V2.1

For programming my STM32s, I’ve been using almost solely those 3-dollar USB dongles from China, which are basically ST-LINK/V2 clones. They do their basic task…

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Posted onDecember 3, 2020March 13, 2021Uncategorized

SLA-printed stencil: a whole new level

by martinLeave a comment on SLA-printed stencil: a whole new level

Some time ago, I experimented with FDM-printed stencils for solder paste dispensing. The result worked relatively well, but I was hitting the limits (mostly resolution)…

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Posted onNovember 23, 2020STM32

2 useful tricks for debugging freeRTOS

by martinLeave a comment on 2 useful tricks for debugging freeRTOS

For less complicated projects, the foreground-background architecture (ie. main loop supported by interrupts) is perfectly fine. But at some level of complexity it is much…

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Posted onOctober 15, 2020October 15, 2020Lithium batteries

Efficiency & noise of an MT3608 boost module

by martin2 Comments on Efficiency & noise of an MT3608 boost module

As part of theoretical research for a possible future project I wanted to measure the efficiency, noise and also max output current of an MT3608-based…

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Posted onOctober 11, 2020Uncategorized

Uploading .bin files to ESP32 without Arduino IDE

by martinLeave a comment on Uploading .bin files to ESP32 without Arduino IDE

I recently needed to send new firmware for one of my products to a customer. While he had the neccessary USB-UART converter, he didn’t have…

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Posted onSeptember 16, 2020STM32

Using Serial Wire Trace with CubeIDE (aka a new level of debugging)

by martin2 Comments on Using Serial Wire Trace with CubeIDE (aka a new level of debugging)

I’ve been developing for STM32’s for a couple of years now, and I did a lot of different projects – from large powersupplies to small…

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Posted onMay 16, 2020August 10, 2020Uncategorized

Simple PCB tabletop WordClock

by martin2 Comments on Simple PCB tabletop WordClock

If you are into electronics, you’ve probably built a clock at some point in time – it’s a daily use thing everyone finds handy, building…

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