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2017

DIY Test Equipment

July 2017 Previous month Next month
Peter, Jon and I are designing a programmable electronic load, here on element14: Programmable Electronic Load We'll never make it in time for the DIY Test Equipment initiative (we may have a first prototype In the Year 2525). But it can help you if you want to build a device that can be automated with LABView or similar*.     What's in the current version: - working firmware with a SCPI integration. Complies to SCPI standard out of box. - tested PCB with several ADC and DAC chan ...
I was planning to make a super simple logic probe but Jon beat me to it with his comparator based logic probe. So I've prototyped a microcontroller based one.   Microcontroller based logic probe with display My project has just two modules, an Arduino clone and an Adafruit I2C LED backpack. The probe is connected to an analogue pin although the current software uses it as a digital pin only. The pin is sampled once every half second and 8 samples are shown across the screen on the first 2 l ...
Introduction The Project Planning the Design Testing motors Control I/O DC/DC Regulator Design in practice The Testing Platform The Software Software Design 1. Main Sketch Main loop() structure Motors running status block Serial parsing block Analog reading block Other functions in the main sketch LCD layout 2. MotorControl Class MotorControl - Hardware control methods MotorControl - High level methods 3. Commands Des ...
Introduction Hardware setup Controlling the system through the serial port System status Status : Started Status : Ready Status : Load Status : Running Terminal messages Commands Status commands Filament commands Units commands Information commands Motor commands Running mode commands Application logic setup() loop() parserCommand(commandString) Introduction I am one of the road testers for the Infineon DC Motor Shie ...
Introduction Choosing the design approach Introducing the TLE94112LE Arduino shield Functional design and components The MCU Weight sensor Motion hardware Filament spool driver Mechanics and motion design Introduction I am one of the road testers for the Infineon DC Motor Shield w/ TLE94112EL for Arduino and this project is the first part of the road test blogging. This is the motorised evolution of the 3d printer filament roll holder and monitor for Arduino ...
I work with small thermocouples and Hot-Wire/Hot-Film devices in my lab.  To test and calibrate these devices requires some crazy equipment sometimes. Try to imagine blowing air on a thermocouple that's in a chain of thermocouples 1mm apart without disturbing the ones on either side. Hot-films are very sensitive to the air flow direction, and it's difficult to move a big fan around keeping the air flow at accurate angles. So, after trying straws taped to little fans and other sometimes s ...
Just understood what the prize is haha. In that case, this could benefit me with the documentation of the different max speeds of all electric motors in my inventory. I could then select the most appropriate motor for a certain application.   ...
I have recently begun the construction of an 8-bit computer based around an Intel 8088 CPU. I believe that I have all necessary components for the build, but I am still not too sure. A handful of ICs (including what appears to be the clock IC) have lost their labels after years in storage. It would be very handy to have a component tester to know which pins are which; therefore, knowing what the IC is. I also have many unlabed MOSFETs with no branding or information printed in them as well. So a ...
DIY Test Equipment Monthly project competitions, chances to earn prizes, you decide project themes, your ideas, your projects, turn ideas into projects. Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   Introduction This project is to build a handheld test tool, to measure how fast things are turning. It could have uses in vehicle diagnostics, or for checking how fast a drill is spinning. It could also be used in math/physics experiments to see how fast w ...