Memristor simulation with LTspice – a practical example!
Lately I’ve been getting back into the EE groove with some random electronics projects (such as an Arduino-based LED strip driver). I’ve also been dabbling with different circuit simulators like...
View ArticleAh, Maker Faire! BeagleBone, HexBright, etc.
I had a great time at Maker Faire this weekend! I picked up a few items which I’ll quickly summarize here: First, I snagged a BeagleBone Black kit. I haven’t had a chance to open it up yet but it looks...
View ArticleOn the proper use of the I2C bus in general and with the Logos RGB Matrix...
Note: In the course of all this I created an improved Arduino I2C bus scanner. Check it out! First, a thank-you to Pierce from Logos Electromechanical who clued me in on what I was doing wrong with the...
View ArticleLearning by Hacking: Modding the Logos RGB LED Matrix Backpack
As mentioned in a previous post, I recently bought an RGB LED Matrix “backpack” (with 8×8 RGB LED display) created by Logos Electromechanical. It’s an open design, and you can find both the hardware...
View ArticleTrying out my new Colorduino v2.0 – first impressions and tips
After my recent experiments with the Logos RGB backpack I stumbled upon the Colorduino (a cousin if not a descendant of the Rainbowduino), which is a very interesting little device! It not only...
View ArticleOf Memes and Memory and Moore’s Law
1000-fold more memory in the same device – but will it scale indefinitely? A post has been making the rounds on Reddit and Facebook, graphically demonstrating the 1000-fold increase in (flash) memory...
View ArticleA quick guide to running a Raspberry Pi from a hard drive
The Raspberry Pi is a fun if limited little single-board computer (were that it had more than one core). That said, running off an SD card is not exactly optimal, with write speeds being the greatest...
View ArticleMingHe buck/boost converters – handy, if you’re careful!
The following information seems to generalize to any of MingHe’s buck/boost converter designs with the 8x2pin daughter board with display and buttons). Though most of this info is for the more common...
View ArticleUSB serial devices and the unexpected side-effects of serial enumeration...
I got a WDF_VIOLATION BSOD (0x0000010D) in Windows 7 (x64) when I connected a dev board via USB serial today. It was an alarming error I’ve never seen before… … but I suspect it’s more common for...
View ArticleMemristor simulation with LTspice – a practical example!
Update 2016-08-25: LTSpice XVII is out! It doesn’t look that different from IV but it’s definitely improved under the hood. There is a quirk though: it installs a set of component libraries in the...
View ArticleAh, Maker Faire! BeagleBone, HexBright, etc.
I had a great time at Maker Faire this weekend! I picked up a few items which I’ll quickly summarize here: First, I snagged a BeagleBone Black kit. I haven’t had a chance to open it up yet but it looks...
View ArticleOn the proper use of the I2C bus in general and with the Logos RGB Matrix...
Note: In the course of all this I created an improved Arduino I2C bus scanner. Check it out! First, a thank-you to Pierce from Logos Electromechanical who clued me in on what I was doing wrong with the...
View ArticleLearning by Hacking: Modding the Logos RGB LED Matrix Backpack
As mentioned in a previous post, I recently bought an RGB LED Matrix “backpack” (with 8×8 RGB LED display) created by Logos Electromechanical. It’s an open design, and you can find both the hardware...
View ArticleTrying out my new Colorduino v2.0 – first impressions and tips
After my recent experiments with the Logos RGB backpack I stumbled upon the Colorduino (a cousin if not a descendant of the Rainbowduino), which is a very interesting little device! It not only...
View ArticleOf Memes and Memory and Moore’s Law
1000-fold more memory in the same device – but will it scale indefinitely? A post has been making the rounds on Reddit and Facebook, graphically demonstrating the 1000-fold increase in (flash) memory...
View ArticleA quick guide to running a Raspberry Pi from a hard drive
The Raspberry Pi is a fun if limited little single-board computer (were that it had more than one core). That said, running off an SD card is not exactly optimal, with write speeds being the greatest...
View ArticleMingHe buck/boost converters – handy, if you’re careful!
The following information seems to generalize to any of MingHe’s buck/boost converter designs with the 8x2pin daughter board with display and buttons). Though most of this info is for the more common...
View ArticleUSB serial devices and the unexpected side-effects of serial enumeration...
I got a WDF_VIOLATION BSOD (0x0000010D) in Windows 7 (x64) when I connected a dev board via USB serial today. It was an alarming error I’ve never seen before… … but I suspect it’s more common for...
View ArticleA spotter’s guide to WS2812B LEDs – distinguishing good from garbage!
In the course of my investigation of LEDs claiming to be WS2812Bs, I created a review on Amazon for Mokungit’s 93 LED ring device – because unlike other devices from other companies, theirs actually...
View ArticleArduino Star OTTO (Light): Unboxing and first look!
[Updates at the end of this article] At today’s Bay Area Maker Faire I was hopeful that I’d hear some news on the Arduino Star OTTO… I walked away with not just news but a new Star OTTO Light! (At $54...
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