Tuesday, October 30th, 2018
Jesus Echavarria made this battery monitor and wrote a post on his blog detailing its assembly: Here’s one of the design I do last year for a client. He wants to measure the voltage of a car battery and set a couple of alarms when voltage falls below a defined...Tags: battery monitor
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Monday, October 29th, 2018
Stynus has published a new build: For a project I need to program a few microcontrollers in the same circuit. This meant I needed to plug the programmer around on the board a lot. This got annoying very fast. Therefore I decided to make a switch box. In my junk...Tags: ICSP
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Friday, October 26th, 2018
Anthony Lieuallen made this custom power supply and wrote a post on his blog detailing its assembly: You might not truly be an electronics nerd until you build your own power supply. Either way, I've finally passed that threshold. As I've mentioned previously (and previouslier), I've been working on mine...Tags: build log, power supply
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Thursday, October 25th, 2018
Coyt Barringer documented his home energy monitor project called POVON. This first part of a series will detail the 20 Channel sub-metering hardware: Our initial goal was to monitor power consumption in different parts of the house, and we quickly realized every household circuit would need to be monitored. After...Tags: home energy monitor, IoT
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Wednesday, October 17th, 2018
Vagrearg published a new build: Lies, damn lies and statistics. You have a high school science fair and want to know how your project was perceived by the visitors. Modern online behaviour will direct you to "taking the online survey". That requires an extra step for the visitors, usually by...Tags: Arduino Pro Mini
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Monday, October 15th, 2018
Dr. Scott M. Baker made a Masterplay clone: The Masterplay was originally a device that allowed Atari 2600 digital joysticks to be used with the Atari 5200. In this post, I describe a masterplay clone that I created. The analog controllers for the Atari 5200 are (in)famous for their poor...Tags: Atari 2600, game console
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Thursday, October 4th, 2018
Aki made this DIY pocket HV generator: There are times you find yourself looking for a relatively high voltage (100V to 200V often in my case) but low current DC power supply. I have zener diodes that are higher than 30V, which makes the lab supply useless, and filament LEDs...Tags: HV generator
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Friday, September 28th, 2018
Dr. Scott Baker has developed an adapter that allows you to use Playstation 2 analog controllers on an Atari 5200, that is available on gitHub: This adapter allows you to use a PS2 controller on an Atari 5200 gaming console. The 5200 was notable at the time for its use...Tags: Atari 5200, gaming console, PS2 controller
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Tuesday, September 25th, 2018
Sasa Karanovic shared a how-to on making a IoT LED dimmer: Making a IoT LED dimmer that you can control via your PC, phone, tablet or any other device connected to the network is super simple, and I’m going to show you how. I’m sharing my three channel LED dimmer...Tags: LED dimmer, tutorial
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Thursday, September 20th, 2018
Dr. Scott M. Baker made a custom controller for the Atari 5200 vintage gaming console, that is available on Github: I decided to make my own Atari 5200 analog controller, using a sparkfun thumbstick together with ADC and digital pot to do the potentiometer scaling. The controller is aesthetically a...Tags: Atari 5200, Game Controller, gaming console
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Monday, September 17th, 2018
A Raspberry pi zero w pocket terminal project from Facelesstech, that is available on Github: So if you have been following my blog lately you may have noticed me rambling on about trying to get a Xbox 360 chat pad and an ps3 keypad working with a raspberry pi to...Tags: portable terminal, Raspberry Pi
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Friday, September 14th, 2018
Mark Rehorst has a nice write-up about building his Ultra MegaMax Dominator (aka UMMD) 3D printer: Ultra MegaMax Dominator (aka UMMD) is my third 3D printer design/build. I used much of what I learned from its predecessors, and tried a few experiments, resulting in a very high quality machine that...Tags: 3d printer, build log
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Wednesday, September 5th, 2018
Quinn Dunki has a great write-up on building this homemade-from-scratch electric steam boiler: Yes, you read that title correctly. After many months of effort, this homemade-from-scratch electric steam boiler is finally going to make steam. Before we’re done, we’ll learn some sobering lessons about the dangers of live steam. Now...Posted in DIY | No Comments »
Tuesday, August 21st, 2018
Øyvind shows you how to easily make a DIY Atari Punk console: Do you want a fun and easy-to-build circuit? Here’s the simple, but fun Atari Punk Console – with schematics and parts list. It’s a quick build, so you can easily build it during an evening. It takes its...Tags: console
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Thursday, August 9th, 2018
Ben Chong posted his RC2014 6809 CPU board, that is available on github. More details on his blog.Tags: 6809 CPU, RC2014
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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....Posted in DIY | No Comments »
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...Tags: Atari 5200, game console
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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...Tags: CD4040, CD4069, logic probe, Logic Pulsar
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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...Tags: DC voltmeter, testing
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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...Tags: Attenuation, high pass, KiwiSDR
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