In this post, I present a DIY 3D printed adapter for 4-wire Kelvin measurement of SMD components with an LCR meter. The adapter has been tested with the Multicomp Pro handheld LCR meter (rebranded Hantek 1833C) and should work with the DER DE-5...
BackgroundI recently used breadboards in a couple of projects and rediscovered some of their utility as well as many of the myriad reasons why I stopped using them years ago.I started to list all the reasons why I was turned off breadboards, in a hum...
For the DIY Test Instrument Project14 Challenge I decided that I wanted to make something using a graphic display and something I have been playing with this summer (when the sun actually shines!) are solar cells. Solar cells are interesting things a...
I recently went through this blog postCreating a function generator from an Arduino board that can be programmed by means of a VT100 serial terminal looks a good idea to. After all, it's a very common scenario to have a PC on your workbench and, ...
VCO -- A black box that provides an oscillating electrical signal whose frequency can be controlled by providing DC voltage input to it.Voltage Controlled Oscillators are fairly popular circuits used as subsections in PLLs, Music Synthesizers, Test a...
Introducing, the Pico Puffer a high precision capacitance meter. With the name puffer being a fun adaptation of the short-form saying of pico-farads as puffs. My hope for this project is to be able to make a capacitive soil moisture measurement....
Introduction
Apologies to anyone who has read a lot of this already, I just couldn’t work out how to turn an existing blog into a Project14 entry. If you have read any of those posts, then much of this information will be familiar but th...
Sometimes there is just no tool that will get the job done quickly and efficiently so sometimes we have to modify an existing tool or create our own to accomplish what we need in much less time then prior methods.
I work primar...
In this post, I am going to show the process I went through to build SMD test measurement tweezers. Will they work? I started with loose goals in mind, iterated, and made something physical daily with what was at hand. 18 July 2...
Table of Contents
Introduction
Block Diagram
Circuit Diagram
Power Entry
Input Stage
First Gain Stage
Filter Stage
Attenuator
Second Gain Stage
Offset Null
Low Power Indicator
Proto Area
Circuit Board and Construction
Enclosure
Frequency Respo...
U.S. Air Force Senior Master Sgt. Mike Chandler, 142nd MaintenanceSquadron out of the Portland Air National Guard, displays his avionicsElectronics Systems Test Station (ESTS) cable tester that he designedPhoto by: Airman First Class Andrew Kobialka ...
U.S. Air Force Senior Master Sgt. Mike Chandler, 142nd MaintenanceSquadron out of the Portland Air National Guard, displays his avionicsElectronics Systems Test Station (ESTS) cable tester that he designedPhoto by: Airman First Class Andrew Kobialka ...
U.S. Air Force Senior Master Sgt. Mike Chandler, 142nd MaintenanceSquadron out of the Portland Air National Guard, displays his avionicsElectronics Systems Test Station (ESTS) cable tester that he designedPhoto by: Airman First Class Andrew Kobialka ...
U.S. Air Force Senior Master Sgt. Mike Chandler, 142nd Maintenance Squadron out of the Portland Air National Guard, displays his avionics Electronics Systems Test Station (ESTS) cable tester that he designed. Photo by: Airman First Class Andrew Kobia...
Design Overview: As I said in the last blog I am going to use an Arduino Mega 256 not for its I/O capabilities, but for its memory size. Getting to 50 pins is really 100 pins! Ouch.
The only way I can achieve this is to use 4 16 bit I/O expand...
In its simplest form, you would have a wire and a DVM with its leads on both ends like you would measure resistance. With more wires comes more headaches. And this is what I want to test for:
Pin-out connector A to Pin-out connecto...
