Project Mini Rack – compact and portable homelabs
(jeffgeerling.com)
Today I'm announcing Project MINI RACK, an open source project to help those building homelabs, RF/wireless rigs, and other electronics projects into mini 10" racks.
Today I'm announcing Project MINI RACK, an open source project to help those building homelabs, RF/wireless rigs, and other electronics projects into mini 10" racks.
All-Band Receiver Lets You Listen to All the Radio at Once
(hackaday.com)
There are many ways to build a radio receiver, but most have a few things in common, such as oscillators, tuned circuits, detectors, mixers, and amplifiers.
There are many ways to build a radio receiver, but most have a few things in common, such as oscillators, tuned circuits, detectors, mixers, and amplifiers.
Soldering the Tek way
(hackaday.com)
For a lot of us, soldering just seems to come naturally. But if we’re being honest, none of us was born with a soldering iron in our hand — ouch! — and if we’re good at soldering now, it’s only thanks to good habits and long practice. But what if you’re a company that lives and dies by the quality of the solder joints your employees produce? How do you get them to embrace the dark art of soldering?
For a lot of us, soldering just seems to come naturally. But if we’re being honest, none of us was born with a soldering iron in our hand — ouch! — and if we’re good at soldering now, it’s only thanks to good habits and long practice. But what if you’re a company that lives and dies by the quality of the solder joints your employees produce? How do you get them to embrace the dark art of soldering?
Binary modding a water dispenser to save me from pressing a button (2021)
(practicapp.com)
A few months ago, I decided that it’s time I started to become more responsible and to start drinking more water.
A few months ago, I decided that it’s time I started to become more responsible and to start drinking more water.
How do non-software engineers feel upon reflection, about their degrees?
(ycombinator.com)
To set the scene: I wanted to build my own devboard for my own projects. I'm sat here looking at my screen after having opened KiCAD with some of the documentation for an STM32H7 MCU. It dawns on me that I have absolutely zero clue of what I am looking at and have no idea where to start beyond watching youtube. Here I am now writing this.
To set the scene: I wanted to build my own devboard for my own projects. I'm sat here looking at my screen after having opened KiCAD with some of the documentation for an STM32H7 MCU. It dawns on me that I have absolutely zero clue of what I am looking at and have no idea where to start beyond watching youtube. Here I am now writing this.
Building Ultra Long Range Toslink
(benjojo.co.uk)
This post is a textual version of a talk I gave at The 38th Chaos Computer Congress at the end of 2024. You can watch the talk that was recorded by the wonderful C3VOC team below if that’s your preferred medium:
This post is a textual version of a talk I gave at The 38th Chaos Computer Congress at the end of 2024. You can watch the talk that was recorded by the wonderful C3VOC team below if that’s your preferred medium:
How to Debounce a Contact (2014)
(ganssle.com)
The beer warms a bit as you pound the remote control. Again and again, temper fraying, you click the "channel up" key until the TV finally rewards your efforts. But it turns out channel 345 is playing Jeopardy so you again wave the remote in the general direction of the set and continue fiddling with the buttons.
The beer warms a bit as you pound the remote control. Again and again, temper fraying, you click the "channel up" key until the TV finally rewards your efforts. But it turns out channel 345 is playing Jeopardy so you again wave the remote in the general direction of the set and continue fiddling with the buttons.
A History of Early Microcontrollers, Part 1: Calculator Chips Came First (2022)
(eejournal.com)
Gary Boone, who worked in the Texas Instruments (TI) MOS Department, devised the first chip that can be called a microcontroller because he was becoming bored with his job and in trouble with his family.
Gary Boone, who worked in the Texas Instruments (TI) MOS Department, devised the first chip that can be called a microcontroller because he was becoming bored with his job and in trouble with his family.
Choosing an op-amp for your project
(lcamtuf.substack.com)
This article assumes some familiarity with the principles of op-amps; if you need to jog your memory, start with an earlier write-up on signal amplification.
This article assumes some familiarity with the principles of op-amps; if you need to jog your memory, start with an earlier write-up on signal amplification.
Power up and tear down of a Rohde and Schwarz SKTU BN 4151/2/5 noise generator
(makertube.net)
We are sorry but it seems that PeerTube is not compatible with your web browser.
We are sorry but it seems that PeerTube is not compatible with your web browser.
Shmøergh Hog – The making of a simple analog synth
(peterzimon.com)
We finished the first version of a synthesizer that starts to resemble a real product. It's the same concept that I've already written about – a simple switches-over-knobs style analog synth for live performance, called Hog – but with completely reworked circuitry and enclosure.
We finished the first version of a synthesizer that starts to resemble a real product. It's the same concept that I've already written about – a simple switches-over-knobs style analog synth for live performance, called Hog – but with completely reworked circuitry and enclosure.
Against the Hydraulic Analogy
(lcamtuf.substack.com)
Let that sink in: the most popular tool for teaching electronics makes the trade harder to learn.
Let that sink in: the most popular tool for teaching electronics makes the trade harder to learn.
Homebrew Batteries
(hanssummers.com)
I had lots of fun building homebrew batteries. I wanted to build a radio transmitter powered by natural, homebrew power sources. The first thought, was a lemon battery (or few). All over the place on the internet, you can read about the classic school science project, sticking two dissimilar metals into a lemon and generating some small amount of power. Sometimes potatoes. You can even buy "kits" to do this in toystores.
I had lots of fun building homebrew batteries. I wanted to build a radio transmitter powered by natural, homebrew power sources. The first thought, was a lemon battery (or few). All over the place on the internet, you can read about the classic school science project, sticking two dissimilar metals into a lemon and generating some small amount of power. Sometimes potatoes. You can even buy "kits" to do this in toystores.
Nonlinear Circuits Handbook (1976)
(analog.com)
This was the first major book devoted exclusively to nonlinear circuits including multipliers, modulators, mixers, logarithmic amplifiers, rms-to-dc converters, and other translinear circuits.
This was the first major book devoted exclusively to nonlinear circuits including multipliers, modulators, mixers, logarithmic amplifiers, rms-to-dc converters, and other translinear circuits.
Build a Low-Cost Drone Using ESP32
(digikey.com)
Drones have rapidly evolved from niche hobbies to versatile tools with a wide range of applications, from photography to agriculture or even for defence and military purposes.
Drones have rapidly evolved from niche hobbies to versatile tools with a wide range of applications, from photography to agriculture or even for defence and military purposes.
Piezoelectric Generators
(americanpiezo.com)
Piezoelectric ceramics, when mechanically activated with pressure or vibration, have the capacity to generate electric voltages sufficient to spark across an electrode gap.
Piezoelectric ceramics, when mechanically activated with pressure or vibration, have the capacity to generate electric voltages sufficient to spark across an electrode gap.
SignalSDR Pro: A rugged, compact, high-performance SDR
(crowdsupply.com)
SignalSDR Pro combines portability and performance. With roughly the footprint of a credit card or a Raspberry Pi SBC, SignalSDR Pro is the perfect companion for anyone who needs powerful tools without the bulk. From signal processing and spectrum analysis to communication systems and beyond, SignalSDR Pro allows you to tackle complex SDR projects quickly.
SignalSDR Pro combines portability and performance. With roughly the footprint of a credit card or a Raspberry Pi SBC, SignalSDR Pro is the perfect companion for anyone who needs powerful tools without the bulk. From signal processing and spectrum analysis to communication systems and beyond, SignalSDR Pro allows you to tackle complex SDR projects quickly.
Self-Assembly Trick Makes Transistors and Diodes
(ieee.org)
Using liquid metal, scientists have devised a new way to make electronics that assemble themselves.
Using liquid metal, scientists have devised a new way to make electronics that assemble themselves.
Testing for Thermal Issues Becomes More Difficult
(semiengineering.com)
Increasingly complex and heterogeneous architectures, coupled with the adoption of high-performance materials, are making it much more difficult to identify and test for thermal issues in advanced packages.
Increasingly complex and heterogeneous architectures, coupled with the adoption of high-performance materials, are making it much more difficult to identify and test for thermal issues in advanced packages.
Demystifying the PPG wave 2.2 and 2.3
(till-kopper.de)
The PPG wave 2.2 with the original wave 2.2 analog boards (named "OF 4"") have AD558 DACs per voice. These are 8 bit DACs. The PPG wave 2.3 uses the analog boards named "OF 4 12 bit" with the 12 bit AD7545 DACs per voice.
The PPG wave 2.2 with the original wave 2.2 analog boards (named "OF 4"") have AD558 DACs per voice. These are 8 bit DACs. The PPG wave 2.3 uses the analog boards named "OF 4 12 bit" with the 12 bit AD7545 DACs per voice.
Making a watch from scratch
(reddit.com)
I made a watch from scratch. Link to the build pics in comments. Making more and looking for feedback, let me know what you think! (i.redd.it)
I made a watch from scratch. Link to the build pics in comments. Making more and looking for feedback, let me know what you think! (i.redd.it)
Energy-Harvesting Electronic Holiday Card 2024
(keacher.com)
Hello friends and family, and happy holidays!
Hello friends and family, and happy holidays!
Borax or Baking Soda Rectifier and the glow (2003)
(sparkbangbuzz.com)
In the early days of amateur radio, the dc plate voltage power supply for the transmitter, was often made using homemade rectifiers.
In the early days of amateur radio, the dc plate voltage power supply for the transmitter, was often made using homemade rectifiers.
How to Reverse Engineer a 12 EUR Intel PCIe FPGA Card IBM 98Y2610
(circuitvalley.com)
This Post is showing how to Reverse Engineer a Unknown FPGA Board which I got off Ebay.
This Post is showing how to Reverse Engineer a Unknown FPGA Board which I got off Ebay.
Mend it Mark gets suspect copyright strike for £25k audio amp repair
(hackaday.com)
We were recently notified by a reader that [Tom Evans] had filed a copyright claim against [Mark]’s repair video on his Mend it Mark YouTube channel, taking down said repair video as well as [Mark]’s delightful commentary.
We were recently notified by a reader that [Tom Evans] had filed a copyright claim against [Mark]’s repair video on his Mend it Mark YouTube channel, taking down said repair video as well as [Mark]’s delightful commentary.