Hacked Gadgets Forum

January 23, 2009

DIY LED Array Display – using ATmega168 microcontroller

at 5:13 am. Filed under DIY Hacks, Electronic Hacks

 

NerdKits has put together a video that describes how a LED row/column matrix is wired. This comes in handy when you have limited pins and need to control lots of items. Another popular method is to use a serial to parallel latch.

 

"This project makes use of row-column addressing, which lets us control lots of LEDs without having one wire going to each one. We also use one more trick — the fact that diodes only conduct in one direction — to double the number of LEDs you can handle with the ATmega168 microcontroller. "


January 22, 2009

Suzuk-E – Suzuki Electric Bike Motor Rebuild

at 2:53 pm. Filed under DIY Hacks, Electronic Hacks


The next phase of the Suzuk-E has been completed , it is focused on the Suzuki Electric Bike Motor Rebuild. The result is a three fold increase in power!

“The objective for the purposes of the Suzuk-E project is to lower the no-load RPM of the motor and increase it’s torque. This typically would be accomplished by winding more turns of lighter wire into the same physical space available. In the case of this specific MY1020 motor, I was able to mathematically determine that 16 turns of AWG # 19 wire in a single coil would bump the coil count up AND yield a greater cross-sectional copper area for the current to flow through. This is largely possible by removing the mylar/plasitic slot liners as well as the fiberglass slot covers and fiber board inserts. The armature slots are still lined with adhesive and a thin layer of the fiber board residue. The risk of an electrical short in the coils is largely mitigated by saturating the coils with an epoxy resin to create a solid mass. The issue of heat dissipation will be aided by the active cooling component of the upgrade. When completed, the motor will be called upon to withstand peaks of 100Amps and sustained current draws of 75Amps.”


January 21, 2009

iPhone Pencil and Rubber Band Stand

at 4:18 pm. Filed under Cool Gadgets

 

If you have an iPhone are watching some long video holding it in your hand will get old fast. Here is a quick and easy Pencil and Rubber Band Stand that you can build from some office supplies in a few minutes. 


Exploding Potassium

at 5:58 am. Filed under What Were They Thinking

 

I haven’t done much playing with different elements of the periodic table but Potassium seems like fun. Why were there no learning environments like the Periodic Table of Videos when I was growing up? This interweb thing is making learning to easy. 🙂

 

January 20, 2009

Obama Presidential Limo – made by Cadillac

at 7:32 pm. Filed under Complex Hacks, Insane Equipment, What Were They Thinking

 

The US President Obama has one sweet ride that is guaranteed to let him safely ride in style. There are still lots of details that have not been released but from what we know and can see it is one amazing vehicle. This Cadillac is made by GM but it is not based on the Cadillac, it is actually based on the huge Topkick truck! The 8 inch doors apparently have 5 inches glass in them.

 


Monitor Household AC Power usage using Clamp Meters

at 9:56 am. Filed under Complex Hacks, Computer Hacks, DIY Hacks, Electronic Hacks

 

This Household AC Power Monitor idea is similar to what I have wanted to do for years. Jason Winters has taken two clamp meters and connected them to both phases of his house electrical panel. This allows him to monitor the entire electrical usage of his house. He is collecting data and creating a spreadsheet to monitor usage over time. What I was thinking of doing was to install one coil per breaker circuit and have a display that simply cycles through the individual circuits, show a sum of the circuit usage and also a RGB LED to indicate amount of usage at a glance.

"The electrical current is measured on the main lines entering my home with AC clamps. The signal is then conditioned with a simple circuit and monitored by an ioBridge module. The ioBridge module takes care of feeding the data to the internet without the need for me to host a power hungry home web server. By using ioBridge widgets with a few JavaScript API calls on my web page, I am able to chart the data with Google Charts as it is measured and make kilowatt-hour calculations in real-time."

Thanks for the tip Jim.


January 19, 2009

Jumpstart your Car using some A123 Batteries

at 4:20 am. Filed under Complex Hacks, DIY Hacks, Electronic Hacks

 

Stephane Melancon (DoctorBass) sent in a very compact battery pack that he uses to jumpstart his car. There are lots of systems that can be purchased that can produce the same results however none of them can fit into your jacket pocket!

"In this video i finally decided to show you how IMPRESSIVE are these A123 cells. During the test, when the starter ran for about 2-3sec, the current reached 230A."

 

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