Blog

SHAHE Wireless Bluetooth Digital Calipers – A Quick Review

2026-03-21T13:15:58Z

Introduction I own two pairs of high-quality Moore & Wright calipers, which offer several advantages: an excellent LCD screen, soft-press buttons, and straightforward operation. However, there are some drawbacks. The battery compartment slide cov...(read more)

Pico SCPI labLib now has configurable USB IDs

2026-03-13T15:22:25Z

Michael Stoops submitted pull requests to make a set of USB parameters configurable in your CMake file. What USB IDs can be configured? USB_VID USB_PID USB_MANUFACTURER USB_PRODUCT USB_SERIALNUMBER FW_VER_BCD FW_VER_STR Before&n...(read more)

Too Many Development Tools: How to Organize Them with Virtual Disks!

2026-03-04T16:16:06Z

Introduction I recently bought a new laptop to replace an ancient one, and this time decided to put more thought into how I organized things. A problem for me is that I tend to install a lot of software tools and integrated development environments (...(read more)

Weller ZeroSmog Guard fume filtration unit images

2026-02-22T14:31:23Z

After the Micro Soldering Kit and Filtration Unit road test, I have a collection of unused photos of the Guard. Posting them here: For earlier photos, when I was setting up the system: Weller Micro Soldering Kit and Filt...(read more)

FSK Demodulation with R&S FPC Spectrum Analyzers, or How I Achieved an Optimal Room Temperature

2026-01-20T21:01:54Z

Introduction I wrote a review (and created a video) for a Rohde & Schwarz FPC series spectrum analyzer eight years ago, and although I explored some of the demodulation capability back then, I never used it for a real-life scenario. Fas...(read more)

Unlock the Secrets of Op Amps and Master Simulation with LTspice

2025-10-28T07:25:14Z

(Image credit: element 14) Operational amplifiers (Op Amps) are one of those fundamental building blocks found in just about every corner of electronics. They’re used to amplify, filter, and condition signals in everything from audio systems a...(read more)

Unboxing Video of TOMLOV 602 Flex

2025-10-02T19:45:15Z

Unboxing the TOMLOV 602 Flex digital microscope from TOMLOV. In this video, I’ll take you through the first look, what’s inside the box, a quick setup, and my initial impressions—especially for electronics work like SMD solderi...(read more)

Low-Cost Waveform Generators: Owon DGE1000 / DGE1030 AWG Review

2025-06-15T16:11:52Z

Table of Contents Introduction What is it? Motivation Unboxing Sine Wave Output 1.4 MHz Signal 10.7 MHz Signal 21.4 MHz Signal Internal Amplifier Noise Modulation Amplitude Modulation (AM) Frequency Modulation (FM) Low-Level Si...(read more)

Miniature Table Saw (Bench Circular Saw): Proxxon KS 230 Unboxing!

2025-05-29T15:04:51Z

I purchased a very small (less than A4 paper sized footprint!) table saw called Proxxon KS 230 , and it arrived today. It's not my first Proxxon tool: Proxxon Rotary Tools Review: Micromot 50/EF, FBS 12/EF and NG 2/E The KS...(read more)

Samtec's Severe Environment Testing Protocol Puts Interconnects Through Their Paces

2025-05-13T19:40:41Z

(Image credit: Samtec) Samtec recently announced the development of its Severe Environment Testing (SET) protocol, a qualification standard designed to test the reliability of Commercial Off-The-Shelf (COTS) interconnects employed in extreme environ...(read more)

Short Circuits and Continuity: Building an Easy Continuity Tester

2025-02-26T20:30:24Z

Table of Contents Introduction How Does it Work? Building It Setting Up and Using It Summary Introduction Since time immemorial, the continuity tester has always been just a dial setting on multimeters. That’s adequate most of the time, bu...(read more)

OpAmp as Schmitt-trigger

2025-01-25T18:29:07Z

A Schmitt-trigger is a circuit that turns a non-perfect digital signal into a clean one. It has 2 main functions: recreate a good fast ramp for signals that have lost their oomph (or never had clean fast edges). provide a bit of hyste...(read more)

Brush and Large-Area Multi-Meter Probes for PCB Reverse-Engineering: A DIY Approach!

2025-01-05T15:44:55Z

This blog post contains some ideas for creating a probe to aid with reverse-engineering PCB layouts. You'd use this probe to temporarily replace one of the normal pointy probes on your digital multi-meter (DMM). Often, you may want to run a cont...(read more)

DIY Hydrogen Generator

2024-12-01T18:17:00Z

DIY Hydrogen Generator Table of contents Introduction Parts list Tools Preparations Let's build it ! Precautions Summary Introduction Hey everyone, you might know that our earth's surface is about 70% water but do you know what water is made up o...(read more)

AiXun CM30 Automatic Soldering Tip Cleaner: A Quick Review!

2024-11-28T22:19:49Z

I recently purchased an AiXun automatic soldering tip cleaner. It has a couple of spinning brushes inside, a bit like an automated car wash but for soldering tips. Here's a five-minute video demonstration and review: https://youtu.be/Fj9V0nAMmqo So,...(read more)