Erich Styger of MCUonEclipse writes, “I have published a Sneak Preview how GNU gprof profiling looks for an embedded target ARM Cortex-M in an earlier post. This tutorial explains how to profile an embedded application (no RTOS needed) on ARM Cortex-M devices with GNU gprof. Additionally I explain the inner workings to generate the data […]
Tag Archives: how-to
Sturdy pots on breadboards
Paul over at DorkbotPDX writes, “Often I throw together a quick demo for the bi-weekly DorkbotPDX meetup, usually involving one or more pots to adjust parameters. Finally, I’ve come up with a pretty good way to put pots on solderless breadboards.” More details at Paul’s blog. Check out the video after the break.
Making an intelligent cap with Crowtail modules
Need an idea for a present? Gebera shares us a present he made for his Dad, an intelligent cap: It can be a great help to let my father know the time and have a rest if the UV ray is too high and be careful when come back late in night. With this cap, […]
DIY digital soldering station
Mike over at PCBSmoke has written an article detailing the build of his digital temperature controlled soldering station: The unit uses a PID temperature controller, an SSR (Solid State Relay) and a transformer plus a metal enclosure case, a soldering stand and a few other parts. It is relatively inexpensive to build, plus it makes […]
SoHa SMART first logo PCB design & manufacture
@josephpcrabtree tweeted, “New learn-to-solder badges for @SoHaSMARTMaker. PCBs from @dangerousproto DirtyPCBs” This is a big day for any maker space when you learn to design and manufacture your own PCB. We are very proud of our circuit design and end result. We will use these in all of our Learn To Solder Classes going […]
An almost reliable, high precision, 3D printer: Son of MegaMax (SoM)
Mark Rehorst wrote this instructable detailing the build of his 3D printer – Son of MegaMax (SoM): I built my first 3D printer, MegaMax, using surplus machine parts over a period of about 2 years. I built it myself because when I started the project, the biggest build envelope you could get in a reasonably priced machine was […]
Ben Heck’s DIY PIC32 Dev board
In this video Ben Heck of Element14 demonstrates how he build his own PIC32 development board.
Simple Infrared PWM on Arduino
The crew from AnalysIR has written up an article on Simple Infrared PWM on Arduino. This first part of a series will show you how to generate the simple Infrared carrier frequency on Arduino: We are often asked on discussion boards, about conflicts between IRremote or IRLib and other Arduino Libraries. In this post, we present a […]
DirtyPCB Arduino business card
Here’s an instructable by ProtoG on how to make your own PCB business card: In this instructable I am going to show you how to make your own printed circuit board business card. I feel that these business cards will really help you stand out from the crowd and make a great impression. It might even […]
10×5 RGB LED Matrix with only 5 IO pins
Here’s an instructable on LED Matrix with custom code/software by Ole_L: This is the software which you need: -Arduino -Processing Flash the software to your Arduino and open the processing project with… Processing! Now you should change the line “String portName = “/dev/ttyACM~”;” to your Serial port, on WINDOWS “String portName = “COM~”;” Via the contact […]
Dead Macbook Pro logic board diagnosis
Louis Rossmann writes: Here I diagnose a board that has issues on PP3V42_G3H which caused issues with the MCP, whose clock circuit is powered by PP3V42_G3H! I go through my diagnostic process and mindset, and follow from beginning to end as I resolve the problem. Via Hacked Gadgets.
Laser etching SMT stencils tutorial
Felix Rusu of LowPowerLab has posted a detailed tutorial on how to laser etch SMT stencils: In this blog post I want to show you my new method that I’ve been using since I’ve purchased a laser cutter from china. It’s using the laser to etch stencils out of transparency plastic (mylar). Chances are that you already have […]
RainCloud Umbrella Minder v2
Do you always forget your umbrella whenever it rains? No more! Jeremy Blum shows you how to easily make a RainCloud Umbrella Minder: The RainCloud is a web-connected smart umbrella holder. Built around the LittleBits Cloud Bit, the RainCloud allows you to tell with a glance if you need to bring your umbrella with you for the […]
Mini stereo SE tube amp
Gert of KGELABS posted a step by step guide of his DIY small stereo amplifier: This project started after getting an old schoolproject from a friend. A metal chassis with a single ECL86 tube, a power transformer and a small Muvolett (Amroh) 7044 output transformer. Intrigued by the simplicity of this amplifier I decided to rebuild the amplifier […]
How digital light processing (DLP) works
Ben Krasnow writes: Digital Light Processing projectors use a chip that is covered with tiny mirrors that tilt back and forth. When the mirror is tilted one way, it reflects light out through the front of the projector, creating a bright pixel. When the mirror is tilted the other way, the pixel is dark. In […]
STM32CubeMX GCC Makefile project
Baoshi writes: Writing peripheral initialization code is probably the most tedious work in embedded development. It always successfully stops me from starting a new project. I believe engineers at STMicroelectronics share the same pain. Therefore they created STM32Cube firmware and STM32CubeMX graphical configuration tool, which turns numerous key strokes and page flips into just a […]
Bus Pirate: Custom UART baud rates
Emil of Unwind.se wrote an article on how to use custom UART baudrates on a Bus Pirate: I made Bus Pirate-baud rate to help when setting custom UART baud rates on the #buspirate. Easier than binary downloads. Via Twitter. Get an assembled Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.
Unbrick FT232 counterfeit chip
j3tstream writes: Like many people, i buy, time to time, some chips or shield from Chinese (dx, aliexpress, ebay) vendors, unfortunately my FTDI FT232 breakout was a fake chip, here he is a interesting thread about that. Jordi Binefa , (thank, you made my day), describe a quickly and easy method to recover a bricked chip, […]
On Western Digital hard drives, PUIS and Rocket Raid controllers
Peter Hofmann fixed his drives and documented the whole process on his blog: After about a day of trial and error, I finally fixed my drives. To save anyone else the days worth of effort, I’ve documented my solution here: Firstly you need to go and find a tool called HDAT2 from www.hdat2.com download it and create a […]
3D printing pen
Jason Poel Smith posted a tutorial on 3D printing pens and how to use them, instructable here: How Does it Work? Like all 3D printing devices, a 3D printing pen works by heating a plastic filament to its melting point and forcing it through an extruder tip. This is very similar to how a hot glue […]