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Archive for the ‘DIY’ Category

6809 CPU board for the RC2014

Thursday, August 9th, 2018

Ben Chong posted his RC2014 6809 CPU board, that is available on github. More details on his blog.

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Posted in DIY, PCBs | No Comments »

4pin hall sensor adapter board

Wednesday, August 8th, 2018

Davide Gironi published a new build: Hall Sensor are pretty common components. Most of the time one will find 3 pin Hall Sensor. But there are time that one can find a 4 pin hall sensor. Those kind of sensor is called dual-channel. See the full post on his blog....

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Pi-powered Atari 5200 multi-ROM cartridge (MultiCart)

Tuesday, July 31st, 2018

Dr. Scott M. Baker has a nice write-up about building a multi-ROM cartridge for his Atari 5200 using Raspberry Pi: The Atari 5200 is a vintage gaming system from the early 1980s. At the time I owned a 2600, but I always wanted a 5200. Well, in 2018 I finally...

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Posted in DIY, R-Pi, vintage | No Comments »

Multichannel logic probe and pulsar

Tuesday, July 24th, 2018

Dilshan Jayakody published a new build: This is 8 channel CMOS logic probe and pulsar which is useful when designing, testing and faultfinding in digital circuits. This circuit is designed using commonly available CMOS logic ICs which including couple of 4069 hex inverters and 4040 binary counter. Logic probe of...

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DC voltmeter test gadget

Tuesday, July 17th, 2018

DuWayne posted an update on his test gadget project we covered previously: The picture shows the completed DCVM test gadget in 4 channel mode measuring the 3 voltages present on the headers used to connect the individual test gadgets.  I was running this off of the PC without the 12...

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Posted in DIY, gadget, testing | No Comments »

A limited attenuation high-pass filter for the KiwiSDR

Monday, July 16th, 2018

KA7OEI published a new build: One of the issues common with using a broad-band, direct-sampling SDR (software-defined radio) like the KiwiSDR is that of overload by strong, low-frequency signals, such as those on the AM (mediumwave) broadcast band - but there's another problem that should be considered as well:  The...

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Posted in DIY, RF | No Comments »

Building a DIY SMT pick & place machine with OpenPnP

Thursday, July 5th, 2018

Erich Styger has a nice write-up about building a DIY pick & place machine based on OpenPnP: This article is about a project I have started back in January 2018. As for many of my projects, it took longer than anticipated.But now it is working, and the result is looking very good:...

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DIY Arduino FM radio

Monday, July 2nd, 2018

Nick over at educ8s.tv shared detailed instructions of how to build this DIY Art Deco style FM Radio project using Arduino: Let’s see what we are going to build today! As you can see, we are going to build an Art Deco style FM radio receiver. The design of this...

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Posted in Arduino, DIY, how-to | 1 Comment »

3D printed stirling engine gas burner and flywheel

Friday, June 29th, 2018

The 3D printed Stirling Engine with its new gas burner and heavier flywheel from Do It Yourself Gadgets: Take a look at my upgraded Stirling Engine with its new gas burner and flywheel! If you take a look at my previous post you'll see how I built a 3D printed...

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Posted in 3D Model, DIY | No Comments »

TRL measurements with homemade VNA and open source software

Tuesday, June 26th, 2018

Henrik Forstén writes: I have been using the OSH Park's 4 layer process a lot on my own projects. It has FR408 substrate that has better controlled permittivity and lower losses than ordinary FR-4 that other low cost PCB manufacturers use. In my opinion currently it is the best low cost...

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Posted in DIY, measurement | No Comments »

Building a GBA LiPo voltage regulator and charger

Thursday, June 21st, 2018

Alex published a new build: I saw a post where someone fitted a 2000mAh LiPo battery to their GBA, they had do to some modifications to the GBA battery compartment to fit it all. By using a LiPo battery instead of the AA’s, it would save us about 20 grams,...

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Posted in DIY | 2 Comments »

ESP32 and the CWTD ‘Test gadget’

Thursday, June 7th, 2018

DuWayne published a new build: I have been following a series of podcasts from 'Chatting with the Designers'  CWTD.ORG that cover building simple Arduino based test equipment.  I decided that this would make a nice way to get into development with the ESP32.  The CWTD 'Test Gadget' is basically an...

Posted in DIY, testing | No Comments »

Presenting the single ESC key USB keyboard

Wednesday, June 6th, 2018

  Glen Akins shares his latest build the single ESC key USB keyboard: After building the “awesomely impractical” giant three-key keyboard, I decided it was time to build something a bit more practical—presenting the single ESC key USB keyboard! This keyboard has exactly one function which is to provide an optimal...

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Posted in DIY, USB | 2 Comments »

Minimalistic 1D pong

Tuesday, June 5th, 2018

Here's a minimalistic 1D Pong game from Vagrearg: How little do you need for a game An exercise in futility. That is what many would call this endeavor. How few elements (signifiers and affordances) do you need to not only recognize a game for what it is, but also are...

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Posted in DIY, LEDs | No Comments »

ETA Nixie tube clock

Wednesday, May 30th, 2018

Mark Smith over at surfncircuits has a nice write-up about building an ETA Nixie Tube Clock: This DIY project will combine the estimated time of arrival function with a Nixie tube display to create an estimated time of arrival (ETA) Nixie tube clock. It is all easily controlled by a...

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Posted in clock, DIY, Nixie | No Comments »

SI5351 VFO project

Tuesday, May 22nd, 2018

Dave Richards (a.k.a. AA7EE) has a nice write-up about building another Si5351 VFO project: To many, this will be just another Si5351 VFO project, with nothing to distinguish it from the others. In fact, that’s exactly what it is. The “how to” of connecting an Arduino board to an Si5351...

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Posted in DIY | 1 Comment »

Rombus pinball – a LattePanda mini pinball machine

Friday, May 18th, 2018

Matt Brailsford (aka Circuitbeard) has a nice write-up about building his mini pinball machine with a lattepanda core running dual monitors: I generally start my projects by thinking about the hardware that I’m going to want to use as I’ll need to know sizes when it comes to the design phase....

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Posted in Arduino, DIY, gadget | No Comments »

Nickelbot – wooden nickel laser engraver

Thursday, May 17th, 2018

bdring posted an update on NickelBot project we covered previously: The NickelBot is complete and it works great. The goal of the project was to create an easily portable machine that creates low cost items that could be given away at events like Maker Faires. I think it has completely achieved...

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Using DC motors to power computers

Friday, May 11th, 2018

Electric generator experiment from HomoFaciens: The generators I am using are in fact geared DC motors, left over from a project with my sponsor RS Components. The modern abacuses being powered during my experiments are a Raspberry Pi Model, a SIMATIC IOT2020 and an Arduino Uno. A 2x16 characters LCD...

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Posted in DIY, techniques | 1 Comment »

Portable bench power supply v2 project

Thursday, May 10th, 2018

Luke writes, "A few years back I made a compact bench PSU based on a DPS-3002 module and a 24v PSU. I have since made a improved version that also includes the ability to run on my power tool batteries making it ultra-portable." See the full post on his blog here.

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Posted in DIY, power supply | No Comments »

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