MagicTK made this mini adjustable voltage regulator, instructables here: The minimum output is based on the voltage regulator’s internal reference voltage (look at the datasheet formula), and the maximum output is based on the batteries connected and how much energy they … Read more
Category Archives: DIY
Yet another update on Bertho’s digitally controlled bench PSU project we covered previously: Did some test-bed assembling today and did a dry-test of the power board. The good news… the power board did not blow up ;-) The aux PSU for … Read more
In this presentation from GrrCON 2014, author Dr. Phil Polstra discusses how to develop your own Linux distro. Phil has assembled his distro known as The Deck which is useful on the Beagleboard and Beaglebone Black boards.
ajoyraman posted a tutorial on how to make a DIY USB-matchbox oscilloscope, an instructable here: In order to economize on the cost of an enclosure while still providing an aesthetic unit the Aj_Scope2 is enclosed in a large size cardboard … Read more
An audio power amplifier based on LM1876 from Electro Labs: We are building another enjoyable weekend DIY project. This is an audio power amplifier based on LM1876 which can deliver up to 20W per channel into 4 or 8 ohm load and … Read more
Kerry Wong writes: For the build, I followed LT’s reference design detailed in the datasheet. For the output filtering, I used a 2.2K/10pF output RC filter to limit the output bandwidth to around 3 MHz. Since we are in the … Read more
Steve Schuler has posted this review of the Kano DIY computer kit on Science 2.0. I’ve lost count of how many computers I’ve built over the years, but I think it is safe to say that the Kano Computer was … Read more
The Arduino and Cloud-based homebrewing controller by Martin Kennedy of TheBedroomLaboratory: It’s just a basic site, based on this Scotch.io tutorial, which is currently plotting the temperature in my sitting room. It’s got a PHP backend (Laravel framework with RESTful API), MySQL … Read more
LC Meter based on PIC 16F628A build by EkusheBangla: Well this is a Very Accurate LC Meter based on PIC 16F628A .Having inspired from surprisingly accurate LC Meter. This is my attempt to build an accurate L/C meter.
An instructable for a PIC based R/C servo controller by Steamhobby: The controllers capture the R/C receiver output, optionally manipulate the samples, then regenerate new servo control signals. As such, they greatly enhance what is possible with cheap servos. They were created … Read more
An open source bluetooth door lock, check out the step by step tutorial here at Make: To open the lock, we will use the app LightBlue. It has a section called the Sandbox, that lets you control the LightBlue Bean without having to … Read more
A Bitx20 band pass filter from Pa1ed: the bandwith of my bandpass filter in the Bitx 20 was very small.Only 100KHz or so.I found this filter on the internet,and after I,ve build the filter I found out that this was … Read more
newtonn2 posted detailed instructions of how to make this DIY small bench power supply that can adjust with precision current or voltage: After making my Mini Adjustable Power Supply I was very happy with it, but I was missing a … Read more
xristost blogged about the frequency counter module he made: First of all I wanted a PIC microcontroller to do the whole job without any additional ICs. Also I wanted to use the the familiar 16F628A, but because one of the portA pins … Read more
An instructables on motor controllers for cheap robots by JayWeeks Almost every robot needs to power a motor of some sort or another. Problem is that motors take quite a lot of power, compared to what most microcontrollers operate with. … Read more
Shawn McCombs blogged about his DIY Arduino RFID card door lock system 100 cards build. Via Hacked Gadgets. Check out the video after the break.
Rich Olson writes, “I just put together an OpenSCAD script that can generate optimized loudspeaker enclosures based on driver’s audio parameters. Intent of course is to 3d print speaker enclosures…” For more information visit Rich’s NothingLabs blog. Via the contact … Read more
mlerman wrote this instructable detailing the build of his USB microscope guided PCB drill: Most of the printed circuit boards I make at home are simple single sided boards. Drilling requirements are minimal, mostly holes to mount the board and an … Read more
Electro18 posted a tutorial on how to make a portable digital optical tachometer using an Arduino Uno, an instructable here: A tachometer is a device used to measure the RPM or Revolutions Per Minute of any rotating body. Tachometers can be contact … Read more
Robson Couto wrote this instructable detailing his Dot Matrix Printer made from parts of a CD reader, with Arduino and processing: Some time ago while going through the pages here in Instructables, something catch my attention, a printer made of … Read more