Hacked Gadgets Forum

June 26, 2016

DIY Smart Glasses

at 7:31 pm. Filed under Cool Gadgets, DIY Hacks

DIY Smart Glasses

 
HARRIS’ ELECTRONICS is developing a prototype set of Smart Glasses. This is not an easy task! You can read about the development challenges here.

Thanks for the tip James.
“The glasses themselves are based around an STM32F051K8 microcontroller (LQFP32 for easy soldering!). All the firmware is custom written though I got the LCD driver initialization codes from the BuyDisplay examples. The firmware is written using a somewhat “co-operative scheduling” with interrupts methodology and for most of the time, the microcontroller is sleeping until something needs to happen. Along side all the Bluetooth and LCD software, I’ve included my SoftTouch library for the two touch buttons on the side of my glasses. These are used to change screens and change items within the screen e.g. move to the next news entry.”

 


June 17, 2016

Custom Word Clock

at 1:28 pm. Filed under Cool Gadgets, DIY Hacks

Custom Word Clock_1

 

Jeremy Blum built this Custom Word Clock. It has lots of non electronic parts such as the great looking case. Good thing Jeremy is no longer at Google and is now working at Shaper with use of a wood working shop. We have seen lots of word clocks here in the past but the main thing I like with this design is the LED panel based design. Most designs use either individual LEDs or addressable LED strips to provide the illumination, with the panel method it removes this large headache.

“I wanted to control the whole thing with a Raspberry Pi and Python. Why? I want to be able to use the clock as a platform for Leah and I to do some Python hacking. This word clock functions fine without an internet connection, but using a Pi makes it easy to hook up to the web for adding future features like a web interface to set an alarm clock – future expansion options! ”

 

 


May 28, 2016

IOT Long Runtime

at 6:18 pm. Filed under Cool Gadgets, DIY Hacks, Educational, Electronic Hacks

 

 

With the adoption of IOT long runtime on battery power is something that is a huge concern. We don’t mind charging our smartphones daily but if we have a dozen IOT devices in our home we would like them to be invisible and just operate for as long as possible without needing attention. Andreas Spiess has done some research using the popular ESP8266 and a variety of batteries. In his test he was sending data to an IOT database every 2 minutes but for many cases you may only need the device to wake and transmit once per hour, this would greatly extend the battery life.

 

 

 

 


May 22, 2016

Spring 2016 Cornell University ECE 5760 Advanced Microcontrollers Final Projects

at 8:09 pm. Filed under Cool Gadgets, DIY Hacks, Educational, Electronic Hacks

flowchart

 

It is that time again! There is a new batch of Cornell University ECE 5760 Advanced Microcontrollers Final Projects. If you have done any PID work in the past the FPGA controlled Magnetic Levitation by Gautham Ponnu, Ryan Land, Nathan Spallone should be of interest. They are using a Altera DE2-115 FPGA board to monitor and control a steel ball about 1mm above the position sensor with great accuracy.
“The LDC1000 inductive sensor from Texas Instruments. This device acts as a mini “metal detector” and tells us, albeit in a nonlinear fashion, the height of the ball. The output is nonlinear because it is measuring the presence of metal through inductance, not the direct elevation of the ball from the sensor.”

 

entire_sch

 

May 17, 2016

SOLAR Powered Plane

at 8:15 pm. Filed under Complex Hacks, DIY Hacks

 

Prometreus has a great concept here. This plane has autopilot and a camera to capture the trip. With a 6 hour 200km range you can certainly cover a huge area.

“A SOLAR powered RC plane flies over 6 hours, only powered by the sun. The plane travels a distance of over 200km. It is self sufficient like the solar impulse system. ”

 

 


May 16, 2016

DIY Spotwelder

at 3:51 pm. Filed under DIY Hacks

 

 

If you do any metal work projects there will come a time when you would like to bond some metal together without using mechanical fasteners. Easiest way to do this is by welding, a spot welder is a type of welder that is simple since there are no welding rods needed. Make it Extreme built this great looking DIY unit. A high current is simply passed through the two metals in one spot allowing them to heat up and fuse together. Best of all the main component that is used is a MOT (microwave oven transformer), these can be scavenged from a discarded microwave for free. The main portion of the build is the structure that allows the unit to be free standing and operated by a convenient foot pedal.

May 14, 2016

Drawing To Laser Engraving System

at 8:04 pm. Filed under Computer Hacks, DIY Hacks

Drawing To Laser Engraving Program_4

 

When it comes to converting something drawn to a laser etched image there are often quite a few steps needed. Martin Raynsford has built this Drawing To Laser Engraving System to allow him to easily go from drawing to laser etched images by using a bit of hardware and some custom software. Of course you can do this type of thing manually like was done in the Halloween Hanging Mobile Project many moons ago but there is something great when the process is automated.

“The third and final project from this years maker faire was a webcam capture program that would easily digitize children’s drawings and then send them down to the laser cutter for engraving. The webcam holder with led lighting to illuminate the drawing. I used a c# wrapper for the open CV library to capture images from the webcam, a little bit of filtering to remove pixels that weren’t black enough. The image was then converted to G Code, and transferred to a GRBL controller that was wired into the Greyfin laser cutter. The G Code simply drives the laser to the next black pixel and burns a single dot for each pixel, repeat for each black pixel in the image.”

 

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