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Archive for the ‘DIY’ Category

Dual purpose spot welder with pulse duration control

Thursday, June 22nd, 2017

Kerry Wong published a new build: I had wanted to make a spot welder for a while. Most of the DIY spot welders use a momentary switch the primary side of the microwave oven transformer (MOT). Due to the simplicity of this design, it is very simple to make. This...

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Arduino data logger update

Tuesday, June 20th, 2017

An update on Edward Mallon’s Arduino data logger project we covered previously: If you need a logger with a cheap durable housing, it’s still hard to beat the Dupont-jumper build released in 2016. But sometimes I need more of a bare-bones unit for bookshelf test runs while I shake down...

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Adjustable gain LNA

Friday, June 9th, 2017

Mare published a new build: Low noise amplifiers are very useful. I built one with single BFG425W transistor with adjustable bias current. Project info at Mare & Gal Electronics homepage.

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DIY NAS

Thursday, May 25th, 2017

A DIY NAS project from Peter Scargill: So I’ve had a fair experience of these systems. Well, this blog entry isn’t about expensive NAS systems. It’s about a cheap one… really cheap that is – and DIY. How cheap? Well, about £12 depending on what you have handy. For this price...

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TB timer – Timed camera cable release

Wednesday, May 17th, 2017

Steve Smith has published a new build: It’s taken some research but I have built a prototype with my trusty ARDX Arduino Uno kit Currently, the device changes mode with a press of the mode button which will later be incorporated in a suitable rotary encoder. I modified the prototype’s...

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3D POV display

Friday, May 12th, 2017

Gelstronic shared detailed instructions of how to build this 3D POV display, project instructables here: In my project i use a spinning helix of LED strips. There are a total of 144 LEDs that can displays 17280 voxels with 16 colors. The voxels are arranged circularly in 12 levels. The...

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Posted in DIY, how-to | 2 Comments »

Dynamic lights with CMOS integrated

Wednesday, May 10th, 2017

Nicu Florica @ Arduinotehniq writes: Schematic was inspired by article from Tehnium anual magazine 1990, but my schematic have extra ligts "games" A few time ago (3-4 years) I need a simple schematic for automatic dynamic games without microcontrollers, so I remenber my schematic... but I simplify my schematic as...

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Build your very own drink mixing robot

Tuesday, May 9th, 2017

https://youtu.be/V-PAW3KoB_A Yu Jiang Tham designed and built his own bartender robot named Bar Mixvah, that is available on Github: I built a robot that mixes drinks named Bar Mixvah.  It utilizes an Arduino microcontroller switching a series of pumps via transistors on the physical layer, and the MEAN stack (MongoDB, Express.js,...

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Posted in 3D Model, Arduino, DIY, tutorials | No Comments »

DIY polarity Led tweezers

Thursday, May 4th, 2017

Jesus Echavarria shared detailed instructions of how to make a simple tweezers for checking led polarity: I usually assemble by hand all the boards I make. I use SMD components, especially in 0805 format for resistors, capacitors and leds. With the last ones, I always have the same problem: I need...

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The microTS – Smallest synth in the world

Thursday, May 4th, 2017

MicroTS, a smallest synth in the world from DIY synthesizer: The micro-TS is a key fob sized DIY synthesizer (61x41mm) with actually useable knobs like an analog synthesizer. The ball pen is for size reference. It has a one octave touch keyboard, 6 knobs and a stereo headphone output. Running on...

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Precision pressure meter with the Bus Pirate

Tuesday, May 2nd, 2017

Scott Harden has a nice build log on his precision pressure meter project: I just completed building a device capable of measuring temperature to one hundredth of a degree Celsius and pressure to one ten-thousandth of a PSI! This project is centered around an ICstation MS5611 temperature sensor breakout board...

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Beacon Keyer

Thursday, April 27th, 2017

Lukas Fässler from Soldernerd published a project writeup showing how he built a PIC-based beacon keyer: This is likely the first ham radio related project that I document here on this blog But my very first PIC project was a beacon keyer that I made for my father, HB9BBD. That...

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Posted in DIY, PIC | 1 Comment »

DIY thermal vision shoots 360 panoramas

Wednesday, April 19th, 2017

Saulius Lukse has posted his DIY 360 panoramas: It might seem simple task but it involves some tricks to control motors and read sensor data from two separate controllers. One of the challenges I faced is meshing position and temperature data. Feedback received from each controllers is timestamped. After scan is...

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MPPT solar charger rev c

Friday, April 14th, 2017

Lukas Fässler from Soldernerd has been working on revised version of his MPPT Solar charger project: Over the last few weeks I have been quite busy with my MPPT Solar Charger project. I’ve built up a first board and started writing firmware for it. Since the last version was not...

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Homebrew PiHPSDR

Monday, April 3rd, 2017

g4fre built his own PIHPSDR, that is available at github: Having seen the Apache-labs version of the PIHPSDR I wanted to customise it to fill my needs, so I needed to build my own All the needed information , with the software, is at John Melton's github site github.com/g0orx/pihpsdr The...

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5V Regulator Cap for 9V battery

Saturday, March 18th, 2017

David Cook built a 5V regulator to sit atop a 9V battery: For quick portable projects and temporary hacks, it is often faster to reuse a simple 5V regulator circuit than to integrate a power supply into the device design. My toolbox has an LED tester and magnifier light, so...

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A Solid State QRP Rig from 1955!

Tuesday, March 14th, 2017

Pete Juliano, N6QW,  built his own vintage 1955 Solid State QRP Transmitter using the Philco SB-100: Recently my friend Bill, N2CQR posted data on his blog ~ soldersmoke.blogspot.com about a vintage late 1950's early 1960's 10 milliwatt 10 Meter transmitter. That was quite a feat! But given my Italian heritage...

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Temperature controlled etching bath with magnetic stirrer

Wednesday, March 8th, 2017

Michael writes, "Yet another temperature controlled etching bath for producing PCBs at home. But this one has a magnetic stirrer :) Check out the video after the break. Project info at acidbourbon's blog. Via the contact form. (more…)

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DIY laser scanning microscope

Monday, February 20th, 2017

Venkes shared detailed instructions of how to make a DIY Laser Scanning Microscope (LSM): The reason I was thinking of a DVD pick-up is that it houses a laser and a lens capable of projecting a spot of visible laser light small enough to "see" a bit on a DVD....

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A Line-us clone

Monday, February 13th, 2017

Barton Dring has a nice build log on his Line-us clone project: I have been going to the monthly Amp Hour, Hardware Happy Hour meetup.  A lot of people bring something to show.  My projects are too big.  Also, you need to bring your own power.  The meetup standard seems to be running...

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Recent Comments

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