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Test Instrumentation

35 posts
I want to make a gadget shoe for our army that can detect landmines before they should touch it work as an shoe vibrator which can vibrate before they touch the landmines by its feet   Thanks for listening to me ...
dubbie

TinyDVM : Unboxing Prizes

Posted by dubbie Jan 30, 2019
I eventually got around to selecting the components that I wanted for being a $100 Prize Winner on the Test Instrumentation Project14 competition and once I had emailed the list to the correct place then they delivered very quickly.  Mostly just a collection of nuts, bolts, shrink tubing, solderless breadboards and similar just to make it easier to carry on making more robots and taking part in more Project14 Competitions. I also requested an Arduino Uno as I want to make a programmer for A ...
After having had great fun making my TinyDVM for Project 14 I was also very happy to be selected as one of the winners. The Tool Kit that was part of the prize has arrived and below is a video showing my unboxing of all the bits. I do apologise for some poor video shots and some poor lighting but the day was ending and I wanted to get it done. Christmas is coming!     I was particularly impressed with the pliers that are included as part of the Tool Kit, they truly are the biggest p ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   The CPU specs are: Pentium® III FC-PGA/PGA2 socket processor-based single board computer (SBC) with 133 MHz system bus 1.26 GHz Pentium III processor with 256 Kbyte advanced  transfer cache or 933 MHz Pentium III processor 512 Mbyte PC-133 SD ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   I have been playing around with the soft latch circuit that enables PITS to be turned on / off with a single non-latching switch. I had problems getting the original circuit to work correctly on the breadboard.     A discussion regarding the ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Project PITS has moved forward since the initial prototype was seen to work.   Since deciding that the best place for the on / off switch was between the charger and the boost circuit, the pre-manufactured board could not be utilised. The circuit h ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Since I'm late to the party, I'm just going to do a quick proof of concept implementation rather than a fully developed tool.  I'll continue to develop the tool to fit future requirements.   Hardware: I decided to make the tool modular to mak ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   I had proposed using a Micro:bit to control a programmable current sink to implement an VI curve tracer for the November Project14 DIY Test Instrumentation competition.  Unfortunately, I had some personal issues that prevented me from being able to ...
Well here is my VME rack on the right. This is my Test Rack, it really does not hold all the cards, I need another 2 cards. The CPU is working and has been tested. The blank slot in the bottom is for an IDE controller with the drive cable coming out of the front panel. Rotech STILL has not gotten back to me. Bummer. I only have one Mega that I was not using and it has the female headers soldered down. And I can not wire wrap to it, therefore I have no way of connecting my Arduino Mega to my DB- ...
Related Post: Precision analog opto-isolation amplifier using HCNR200/201   Hardware Setup: Tab Label Tab Content MAX. and MIN. OUTPUT Maximum and minimum possible output voltage are limited to integrate it with microbit analog input and to avoid any damage to microbit. Maximum output voltage will not exceed microbit analog input maximum limit 3.6V and similarly minimum output voltage will not go below 0V even if negative voltage is applied at the input.   MAX. OUTPUT   MIN. OUT ...
three-phase

Project PITS

Posted by three-phase Nov 13, 2018
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Introduction   PITS is a Pickup Indicator Test System I am developing for use with injection test sets on older electronic analogue designed protection relays. This concept is not original, Omicron have such a product for use with their test set. The ...
jc2048

A Transistor Load

Posted by jc2048 Nov 13, 2018
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Introduction   What to do for my Test Instrumentation project? I decided that I'd do a constant-current load but, to be a bit different, mine doesn't include an op amp to control the loop. Op amps are for wimps - I'm going for the hard stuff - a ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Having decided to have a go at making a web user interface for the TinyDVM I looked at a number of web pages and example programs for the Arduino MKR 1010 Wifi, being surprised to find that there were not that many. There is the official (I think it was ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Ok so time is ticking on by so I am reducing the complexity by only using an Arduino Mega R3 with two 16 bit i2C expanders. This will achieve my short-term goals of 25 x 25 matrix with the flying probe. This will not be client/server, nor use configurati ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   This is the prototype for an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range. The development was documented in detail and links can be found at the bottom of this post.  The prototype is functional but still ...