Overview Once again there are few (if any) component vlaues on the schematic, these will appear in the BOM later on.Treat the pin numbering on the FPFA with caution, I shall swap pins as appropriate when I layout the board. The Detail...
FeaturesHigh stability and no sensitivity to the ambient lightLaser-cut acrylic (plexiglass) enclosureCost-effectiveFlow control capability of the hand-sanitizer/alcohol (efficiency)Through-hole components (easy to solder)Single-layer PCB board (easy...
This is my first stab at the input amplifier for the Archaeology Resistance Meter Project.It's tagged as armp OverviewThe schematic has (almost) no component values but I shall talk about them in the text.All two terminal components are in 0...
Introduction
Overview
Using the Code
Settings Section
Functions Section
Main Code Section
Putting it all Together
Summary
Introduction
For a recent environment sensor project I wanted to make use of an analog moving-coil meter. They ar...
I've been covering the engineering and maker communities for over a decade now, and it never ceases to amaze me when these communities come together to solve complex issues. Take for example the E-Nable Project. Engineers, Makers, and Citizen Scienti...
The blog post here is just a place to put files and diagrams related to an electret microphone element amplifier circuit that is intended for basic sound or speech applications. The circuit is based on requirements from BigG and analysis ...
Introduction
How does it work?
Building a Temperature Sensor
Summary
IntroductionThis blog post describes a really simple (near-trivial) project – wiring up a thermistor! Thermistors are great, but have a limited operational temper...
Hi, I've got some items unrequired, if you're in the UK and wish to have it, please let me know if you want "chemistry" or "LoRa" or "Heating" stuff and I'll post it for free.All of this stuff is new and unused, and I hate to just throw it away since...
This post documents an enclosure for the milliohm meter described here and is a tale of how the mechanical bits are often as difficult to get right as the electronics. The meter parts have been stored away, and thus it was not really available ...
IntroductionFor open source projects, I usually create a table containing the parts details or bill of materials (BoM), but it is tiresome to then re-enter all that information into the Farnell or Newark website, to order the bits. The March 201...
Note: This is part 2 of a two-part project.For first part, see here: Building a Low Cost Solder Fume Extractor – Part 1 IntroductionThis project concerns a solder fume extractor that does as the title suggests, and sucks up solder fumes from so...
This post documents the first working Version 1.3 of an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range. The development to date is documented in the links at the bottom of this post. Version 1.3 contain...
Looks like there is a new Xilinx Spartan7 board on the market! The S7-Mini board has been officially launched at Embedded World 2019, by Trentz Electronic, a German company specialized in the design of high-speed data acquisition, hi...
Hopefully we'll hear more soon, but there appears to be another BeagleBone board launched at Embedded World, with the same form-factor as the BeagleBone Black.It's called the BeagleBone AI. I'm guessing it's not a replacement and won't be anywhere ne...
This post documents Version 1.3 of an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range. The development to date is documented in the links at the bottom of this post. Version 1.3 contains numerous upgrade...
Part 1, Making Fancy Cables: Network Cables! examined how coloured and patterned nylon braids could be used for cable assembles: ) Those cables are intended for demos/presentations and so on. Nylon braid is very easy to use because it can expan...
IntroductionThere are some really nice small enclosures that are incorporated into products sold by Mini-Circuits and others. They are very cool because their surfaces are perfectly perpendicular to each other, with no draft angle. This makes them pe...
IntroductionI've often heard the issue that the audio isn't loud enough when people plug in their iPods/phones and so on into music systems, even if they turn the volume up to maximum on their device or the amplifier. Often the problem is down t...
Hi,I want to introduce a project of me. It's a enclosure set with in-build touchscreen for top wall mounting for ESP32 and ESP8266 modules. This kit enables you to mount your project permanent in your living room, corridor or other exposed places...
Introduction
Background to the Project
Hardware Overview
What Functionality is Implemented?
Using It
What Performance does it have?
How to make it?
Morpheus Main Board
FRDM Board Software
Setting up and using mbed-cli
TFT Screen
...
IntroductionThis blog post discusses some practical implementations of super-low-cost ($30 upward) direct digital synthesis (DDS) based signal generator for home use. To save effort and time, they can all be built around an off-the-shelf microcontrol...
IntroductionThanks to Problemchild he advised me about a simple gaming kit called ODROID-GO, and it was fairly low cost (£38 including delivery to the UK) for such a device, so I was tempted to purchase it. (Note: that there will be duty of approx. £...
