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Author: giodem

Software bugs that can freeze a microcontroller

13 December 2024 giodem Electronics

Can a software bug put a microcontroller in a freeze state to which the only way out is a physical …

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Tap hole size table

25 September 2022 giodem Tables

Metric ISO threaded holes Nominal diameter of the threads Drill/hole diameter Pitch M3 2,5 mm 0,5 mm M4 3.3 mm …

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Energy value of several fuels

25 September 2022 giodem Tables

The lower heating value (also called energy value, or heat of combustion, or calorific value) is the energy (heat) produced …

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RC filter and isolated buffer

4 September 2022 giodem Electronics

A must have circuit when you go to debug EMC problems in an electrical panel. Long wires (50 m) connected …

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ESP32 self updating from web server

10 March 2022 giodem Electronics

Over the air ESP32 update, fetching firmware from folder in remote server. The new .bin file is located in a …

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PV panel IV curve simulator

10 January 2022 giodem Solar power

This circuit can be used to simulate a PV panel up to 30W and 40V. The open circuit voltage depends …

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PV string simulator to test grid solar inverters

10 January 2022 giodem Electronics

A simple and inexpensive circuit to power a grid-tied photovoltaic inverter on the DC side, reproducing the i-v characteristic of a photovoltaic string. Useful to power an inverter at the bench, during repair.

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Recent projects

9 January 2022 giodem Projects
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DIY Pick and place machine with OpenPnP

29 March 2021 giodem Electronics

This PnP machine is designed to be precise (linear rails) and economic (small 3D printed parts, wooden frame), and use …

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How to open a multicontact solar connector

1 December 2020 giodem Solar power

The two clips need to be pressed-in at the same time, then gently pull the two connectors apart. The best …

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  • Software bugs that can freeze a microcontroller
    13 December 2024
  • Tap hole size table
    25 September 2022
  • Energy value of several fuels
    25 September 2022
  • RC filter and isolated buffer
    4 September 2022
  • ESP32 self updating from web server
    10 March 2022
  • Use Arduino timers like PLC timers
    18 March 2018
  • Pioneering photovoltaic
    24 April 2018
  • Biking infrastructure guide – Copenhagen
    3 October 2014
  • Anemometer trigger board
    19 March 2018
  • Recent projects
    9 January 2022
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