Hacked Gadgets Forum

April 22, 2017

Power Supply Decoupling and Filtering

at 11:50 pm. Filed under Educational, Electronic Hacks

 

w2aew demonstrates the use of decoupling and filter cap usage. We have all seen large electrolytic caps and tons of small capacitors near chips on most circuit boards. Why are they used and without them what does the circuit look like. The live demonstration on the scope with the test PCB does a great job in demonstrating the difference with capacitor placement and operating without capacitors.

 


April 18, 2017

Pizza Box Robot That Shines a Laser in Your Eye

at 10:48 pm. Filed under Computer Hacks, DIY Hacks, Electronic Hacks

 
 

Michael Reeves is a software developer at Infibit that has made a face tracking robot that is housed in a pizza box, it tries its best to find your eyes and shine a laser in them. The software that runs on a PC was written in C# and uses Emgu CV which is the .NET version of Open CV for the facial recognition portion. A web cam is connected to the computer scans for a face to attack, when detected the coordinates are sent over a serial cable to a microcontroller.  The ATmega 328 microcontroller has a few servo motors connected to laser pointer. Since the servo motors can move the laser pointer in XY positions the coordinates are used to point where it needs to. The result will annoy you and your guests. I think this would be useful at popular store displays when you need people to move along after having a quick glance. If you are looking to build your own version you can find the code here.

 

 


April 15, 2017

DIY SOLAR TESLA POWERWALL

at 11:40 pm. Filed under Cool Gadgets, DIY Hacks

 

Instead of purchasing a Tesla Power Wall jehugarcia shows us how a DIY version can be put together. The EV West facility has a large flat roof which makes laying the panels nice and easy. The roof is crazy high so getting them up on the roof looks like it was not that simple. The video at the top shows a bit of the solar panel installation and the lower video is an update on the system showing how the system is wired. This system is basically used to charge EV vehicles but there are some regular outlets that can be used for regular plug in equipment if there is a power failure. The Tesla car batteries are mounted in a standard electrical off the shelf enclosure. There is no continuous battery monitoring on the battery packs but rather a header that a battery balance monitoring system can be plugged into whenever they would like to check the levels.

 


April 8, 2017

Mini Spot House Robot

at 2:56 pm. Filed under Complex Hacks

 

When you think of a robot in your house you probably think of a Roomba. I want to see a milti function robot that is capable of doing more. Automation is great when it can do complex tasks unaided that help us out. Just imagine coming home to the dishes done, the floor cleaned and a cold beverage presented to you when you sit in the couch. This sounds like it could be the future if the Mini Spot gets developed.

 

March 24, 2017

Edge Lit 481 Digital Voltmeter Display

at 11:36 am. Filed under Complex Hacks, Crazy Hacks

 

This Edge Lit 481 Digital Voltmeter Display totally makes me want to build a clock with this mechanism. Can you imagine talking a measurement with this meter that oscillates, it would make a ton of noise. I can see this being great help if you were siting on a stable reading and waiting for something to avalanche.

Via: Hackaday

“These early NLS digital meters used a resistor dividing network and stepper relays to select the display digits. If you see one of these in operation you will hear a lot of mechanical relay noise as the range and digits are selected.”

 

 


March 19, 2017

DIY Vacuum Chamber

at 9:56 pm. Filed under DIY Hacks

 

Chris Notap shows us how to make a DIY Vacuum Chamber for under $30. The heart of the vacuum chamber is a recycled compressor pump from a donor fridge. It is simple to construct with a piece of wood as the chamber base and something as simple as a mason jar acting as your chamber body. A few pop bottles are used as a simple free valve. You can see some of the experiments that can be done with the chamber below.

 

March 13, 2017

Hacking Heavy Trucks

at 11:03 pm. Filed under Cool Gadgets, DIY Hacks

If you are looking to have some fun with the network of your big vehicle this video would be fun for you. The CAN bus is probably the vehicle bus that you have heard about but there are many other bus standards that are used when digging into your semi truck. Instead of purchasing a $100,000 truck they built a truck electronic emulation systems.

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