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Posts Tagged ‘how-to’

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 »

Amiga 500 power supply build

Tuesday, June 26th, 2018

A how-to on building an Amiga 500 power supply from Inkoo Vintage Computing: The power supply of my Amiga 500 is a bit unreliable. I’ve had some issues with the machine where the PSU could be the culprit, so I thought that it would be better to get a new power supply. There...

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Posted in power supply, tutorials | No Comments »

A software only solution to the vexing Beagle Bone Black PHY issue

Thursday, June 21st, 2018

Josh Levine has a nice write-up about a software only workaround for the Beagle Bone Black PHY issue: Sometimes the Ethernet port on a Beagle Bone Black does not work on power up. It takes either a physical reset button press or a power cycle to fix it. This problem...

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Posted in hacks, software | No Comments »

Tutorial: Setting up a low cost QRP (FT8, JT9, WSPR etc) monitoring station with an RTL-SDR v3 and Raspberry pi 3

Tuesday, June 19th, 2018

A detailed tutorial on how to set up a cheap QRP monitoring station using an RTL-SDR V3 and a Raspberry Pi 3 from rtl-sdr.com This tutorial is inspired by dg0opk's videos and blog post on monitoring QRP with single board computers. We'll show you how to set up a super cheap...

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Posted in R-Pi, RF, tutorials | 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 »

Arduino time attendance system with RFID

Tuesday, May 29th, 2018

A how-to on building a time attendance system with MFRC522 RFID Reader and Arduino from Random Nerd Tutorials: Before getting started it’s important to layout the project main features: *It contains an RFID reader that reads RFID tags; *Our setup has a real time clock module to keep track of time; *When...

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Posted in Arduino, RFID, tutorials | No Comments »

DIY Moteino guide

Thursday, April 26th, 2018

Felix writes, "I posted a short illustrated guide for making your own Moteino from SMD components. It also includes details how to burn the bootloader and fuses. Check it out here. Thanks and credit goes to forum user LukaQ for his contribution of the images and test sketches in this...

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Why electrolytic capacitors are actually kinda shitty

Wednesday, March 28th, 2018

Afroman writes, "Electrolytic capacitors are common, but knowledge of their limitations is uncommon. A demonstration is shown highlighting the difference in performance between electrolytic and ceramic capacitors in power supplies. Other topics discussed in the video: Electrolytic capacitor construction, ceramic capacitors, ESR, ESL, impedance curves, why “0.1uF”, and more." Via Afrotechmods....

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Posted in tutorials | 2 Comments »

Yet another ARM development tutorial

Tuesday, January 9th, 2018

ARM development tutorial at smdprutser.nl: It has been a while since I wrote about ARM development. I recently made a Black Magic Probe (BMP) clone which acts different then the original. The BMP can source power to the target, but on my version control signal is inverted. Not a big...

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ESP8266 voltage regulator (LiPo and Li-ion batteries)

Tuesday, December 5th, 2017

Rui Santos writes, "In this guide, you’re going to build a voltage regulator for the ESP8266 that can be used with LiPo and Li-ion batteries." More details at RandomNerdTutorials.com. Check out the video after the break. (more…)

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Posted in tutorials | 5 Comments »

DIY through hole plating of PCBs

Monday, October 30th, 2017

Jan Mrázek documented his experience experimenting with DIY through-hole plating of PCBs: I’ve been thinking about though hole plating for several years. The general procedure is simple – you have to activate non-copper surfaces (make them conductive) and then you apply standard electroplating procedure. You can find many tutorials on...

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Posted in DIY, PCBs | 1 Comment »

ESP8266 Deep Sleep with Arduino IDE

Monday, October 30th, 2017

Rui Santos has written a great guide shows us what’s Deep Sleep and how to use it with the ESP8266 in the Arduino IDE. With most of the ESP8266 modules, you can’t change the hardware to save power, but you can write software to do it. If you use the...

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Posted in Arduino, tutorials | 2 Comments »

Extend Eagle CAD tool with ULPs: Writing your first User language program

Wednesday, June 28th, 2017

Yahya Tawil posted a detailed how-to on writing ULP's for Eagle CAD: In this tutorial, you will learn how to write your first ULP in Eagle CAD to add a new capability to your CAD tool. User Language Program (ULP) is a set of extensions for Eagle CAD users to...

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Posted in Eagle, tutorials | No Comments »

Panelization – using GerberPanelizer on Windows (Linux possible)

Wednesday, May 31st, 2017

Arsenijs over at Hackaday.io writes: This tutorial was done on Windows. Authors claim it could also be used on Linux by using Mono, but I haven't tried and don't understand a lot about Mono to see what could be done. I am switching to Linux nowadays, so I'd be very grateful...

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Posted in PCBs, tutorials | No Comments »

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 »

Pool playing robot

Monday, May 8th, 2017

BVarv  wrote an instructable detailing the build of his pool playing robot project with Arduino: I redesign the prototype with servos, belts and gears at the points of rotation to add programmable motion. While doing so, I stumble across an easy win. It turns out that the "parked under the table"...

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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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Posted in DIY, tools, tutorials | No Comments »

ESP32 web server – Arduino IDE

Tuesday, April 18th, 2017

Rui Santos from Random Nerd Tutorials has posted a detailed tutorial on how to create a standalone web server with an ESP32 that can toggle two LEDs using the Arduino IDE. Full details at Random Nerd Tutorials homepage. Check out the video after the break. (more…)

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Posted in Arduino, tutorials, wireless | 1 Comment »

Tutorial: Using Eclipse with NXP MCUXpresso SDK v2 and processor expert

Thursday, April 13th, 2017

Erich Styger from MCU on Eclipse writes: To me, software and tools are by far more important than the microcontroller. Because the silicon is a ‘one time kind of thing’, where the software has to be maintained and working over a longer time. And at least my software usually needs...

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Posted in ARM, tutorials | No Comments »

Tiva and Stellaris Launchpad RTC usage in Energia

Thursday, February 16th, 2017

Vadim has posted a tutorial on how to use internal RTC of Stellaris and Tiva Launchpad boards in Energia IDE: For those of you who still have one of those old Stellaris Launchpads, I'm going to show how to utilize one of its most useful features - real time clock - in...

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