Electronics – GreenPhotons

AVR-Dx micrcontrollers

Post author:uwezi
Post published:2025-06-29
Post category:AVR Computers Electronics
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History When i started this blog 15 years ago, one of my first entries from May 2010 was about my first steps with Atmel microcontrollers. Since then these microcontrollers have…

VSCode for everything

Post author:uwezi
Post published:2023-09-17
Post category:AVR Computers Electronics
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Atmel Microchip Studio 1 1/2 years ago now I have finally abandoned Microchip (Atmel) Studio for programming AVR microcontrollers. I have been using Atmel Studio from the very first day…

We need to talk about ChatGPT

Post author:uwezi
Post published:2023-02-05
Post category:AVR Computers Electronics Science
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There are other, more detailed analyses, looking behind the curtains of ChatGPT, this is just a short summary of my own experiences. For more details, look e.g. here: ChatGPT: Interacting…

The TIAN MA A2C00096100 LCD

Post author:uwezi
Post published:2021-01-10
Post category:AVR Computers Electronics
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The electronics distributor https://www.pollin.de/ is often selling surplus displays, but normally these are not very well documented. The TIAN MA A2C00096100 LCD module is a 90 mm x 20 mm…

Nicely rendered 7-segment numbers

Post author:uwezi
Post published:2020-07-22
Post category:AVR Computers Electronics
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User cbm80amiga has uploaded a nice library to render 7-segment numbers on graphical displays - especially for Arduinos. But the code can as well be used without any Arduino in…

Temperature measurements with an NTC thermistor

Post author:uwezi
Post published:2020-03-23
Post category:AVR Electronics Everything Science
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Following a discussion on Facebook I put here an online tool to calculate the output of a voltage divider consisting of a fixed resistor and an NTC thermistor following a first order Steinhart–Hart equation.

The calculations are based on a voltage divider where either the voltage over the NTC or over the pass resistor is measured. You can change the values in the script according to your own settings. If you break the script for some reason, just reload the page.

SageMath uses Python as programming language.

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Not WormFood’s AVR Baud Rate Calculator

Post author:uwezi
Post published:2019-11-17
Post category:AVR Computers Electronics Everything
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This page without a frame: https://sciencetronics.com/uwezi/avrbaudrate.php

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0.5 mm pitch FPC breakout board - soldered

Some Toner-Transfer PCB Highlights

Post author:uwezi
Post published:2019-05-12
Post category:Electronics
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Some recent highlights from my home-made circuit boards using the toner-transfer method. 0.5 mm FPC breakout board Yes, I have been told that I am crazy before... Designed in KiCAD…

A tiny watchdog

Post author:uwezi
Post published:2018-12-06
Post category:AVR Computers Electronics
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In a recent quick-and-dirty project with a Wemos D1 mini clone I had some problems with the reliability of the code. The ESP8266 contains two watchdogs which have the sole…

IKEA TRÅDFRI Zigbee module on a breadboard.

Hacking IKEA trådfri lighting automation

Post author:uwezi
Post published:2018-11-04
Post category:Computers Electronics Everything LEDs
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I recently visited IKEA again and got interested in their affordable line of home automation/LED lighting products called TRÅDFRI (meaing wireless in a play-with-words kind of Swedish). Of course there…