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Elektor 2020: Design, Learn, and Share Electronics
December 10, 2019 by Elektor Team

Elektor 2020: Design, Learn, and Share Electronics

Elektor helped launch the first DIY electronics design movement in the 1960s. Today, our community comprises tens of thousands of electronics engineers and makers in over 90 countries. Let's review some of the exciting content and projects we have in store for 2020.
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Raspberry Pi Bash Command Cheat Sheet
December 10, 2019 by Clemens Valens

Raspberry Pi Bash Command Cheat Sheet

Because it is almost impossible to work on the Raspberry Pi, or, for that matter, on Linux in general, without ever needing to enter commands in a terminal, here is a list of frequently used Bash commands.
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Add a Watchdog Timer to Your Microcontroller
December 10, 2019
Proposal
by Clemens Valens

Add a Watchdog Timer to Your Microcontroller

Although most modern microcontrollers have an internal watchdog timer, that may not be safe enough for the system to rely on it. The built-in watchdog timer can reset the MCU but it cannot perform a power cycle. An external watchdog controlling the MCU’s power supply may be a better solution in some cases. There are dedicated ICs for that, but you can also make one yourself based on a 555 timer IC.
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A - C: images of a normal microscope; D - F: conventional lens-based microendoscope; G - I: raw images of the new lensless microendoscope; J - L: after computational reconstruction. Image: Mark Foster, John Hopkins University.
December 10, 2019 by Thomas Scherer

Ultra-Thin Endoscope Produces High Quality Images

A new, lensless, ultra-miniaturized endoscope has been developed which is only a few human hairs thick but delivers high quality images...
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Small Circuits Revival – Episode 7
December 10, 2019 by Eric Bogers

Small Circuits Revival – Episode 7

Many (beginning) electronics enthusiasts shy away from building radio receiver projects – frequencies are too high, capacitor black magic, scary inductors... The reality of a receiver that actually performs very well using only a handful of standard parts is demonstrated by this circuit.
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Connector, filter and 5W PSU all in one. Image Recom
December 9, 2019 by Thomas Scherer

IEC Connector with Power Supply Incorporated

Switching Power Supply specialist Recom has unveiled a range of IEC power inlet sockets which incorporate a small, 5-W insulated AC/DC switching power supply ideal for powering small single-board computers...
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The Bernstein Spannfix 9-205 multi-angle vice.
December 9, 2019 by Thomas Scherer

Review: Bernstein Spannfix 9-205 Multi-Angle Vice

The multi-angle Spannfix 9-205 vice from Bernstein is ideal for the engineer. Its versatility and superb build quality make it indispensible in any lab environment...
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Review: Toolcraft Digital Soldering Station
December 5, 2019 by Luc Lemmens

Review: Toolcraft Digital Soldering Station

If I had to choose a soldering station, I’d have a strong preference for the A-brands. It’s not a question of snobbery: in general, I only want to buy tools that I can enjoy using for many years. Quality and reliability are important factors, but the long-term availability of accessories or spare parts also plays an important role for me.
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Free Back Article: Compact USB to Serial Converter
December 5, 2019 by Ton Giesberts

Free Back Article: Compact USB to Serial Converter

The “legacy” serial port is still used a lot for interfaces between electronic devices and PCs. Here we present a compact implementation, based on the FT232H IC from FTDI, which can be connected over USB 2.0 after you install the right drivers. That gives you USB High Speed capability.
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Good boy... now reboot.
December 5, 2019 by Thomas Scherer

Small Circuits Revival - Episode 6

Microcontroller systems running 24 hours a day, 365 days a year, can sometimes (rarely) find themselves in a latch-up state. When this happens nothing works and even a reset may not be enough. In this case only a power cycle will do the trick...
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