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Please Do Not Water This Tree

Today in ‘things which would have been way easier with fibre optics’.

Published 2020-10-04 in #gift idea, #art, #LED, #ARM, #STM32, and #leshy

A Better STM32F0 Prototyping Experience

Or: How to make most out of 50 by 50 mm in terms of development usefulness.

Published 2020-02-03 in #hardware, #embedded, #STM32, #ARM, #PCB, and #leshy

Building a Camera with a Rather Undersized Microcontroller

A weekend project you might call an ‘inverse thermal camera’.

Published 2018-08-24 in #embedded, #STM32, #ARM, #thermal printer, #art, and #weekend project

A short reflection on direct laser PCB printing

Using toner as an etch resist without having to bother with thermal transfer.

Published 2017-12-25 in #PCB

A short reflection on direct laser PCB printing

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A Zoom H4n Pro audio recorder found its way to me, non-working. Recordings seemed to be silent, but with loud enough input you could just make out some distorted sound in the recording. After (unneccessarily) disassembling it completely, I found out that the power supply of the preamplifier board was sitting at around 0.8 V, which thankfully/boringly turned out to be the only fault in the unit.

USB-C to Micro-USB Adapters

I have a Seek thermal camera, which works by connecting it to a phone and using Seek’s app to display the image, take photos, etc. It’s an older model, from back when there were two variants, one with Micro-USB and one with Lightning. I’m on my third phone since I got it, which does not have a Micro-USB port any more. But it’s easy to get an adapter from USB-C, right?

ESP8266 Programmer

For the software side of some ESP8266 development, I bought a cheap ESP01 to USB adapter from AliExpress, expecting a programming adapter. What turned up on my doorstep, however, was just a USB-UART adapter which wasn’t able to drive the reset and GPIO0 pins. Luckily, the missing circuitry could be added easily.

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