Hacked Gadgets Forum

March 9, 2014

Drone with a 80KV Stun Gun

at 9:46 pm. Filed under Insane Equipment, What Were They Thinking

 

When you get tired of flying a regular hexcopter why not kick things up a notch and install a stun gun on the thing to protect your property!

“In the video above, CUPID (short for Chaotic Unmanned Personal Intercept Drone) takes down an intern. He doesn’t get up with ease.”


March 6, 2014

How the Fadecandy LED Controller is Made

at 5:47 am. Filed under Complex Hacks, Insane Equipment

 

Adafruit recently took on production of the Fadecandy project that Elizabeth Scott developed. The video above is How the Fadecandy LED Controller is Made using the automated PCB production machines. There are 3 basic machines in the equipment path, the panelized PCB goes through a solder paste machine where a laser etched stencil is used to put solder in just the right locations. The board is then moved through the pick and place machine where all of the components are automatically placed, and finally it rolls through a reflow oven where all of the parts are permanently soldered in place. Only thing to do after that is snap the board off and plug it into a test jig.


February 26, 2014

DIY Four-Terminal Kelvin Sensing Connection

at 11:41 pm. Filed under Insane Equipment

 

If you are taking very low resistance measurements you have a few options. Many meters have a low ohms mode where you are able to zero out the meter resistance but the best method is using a Four-Terminal ohm meter and appropriate connection. In the video above ROBRENZ shows us some typical issue with the clips that are currently available and as a machinist he also demonstrates with some very intricate work that it is possible to improve on what is being used in industry. If that isn’t enough he also demonstrates how the current design of kelvin probes is flawed, the second video demonstrates his solution to the issue. Of course if he was selling one of these solutions it would probably cost more than the meter it is to be used on and unless you are measuring something of extremely low resistance the benefits would not warrant the insane build effort.

 


February 8, 2014

Magnet Inside a Large Copper Tube

at 10:03 am. Filed under Insane Equipment

 

Another great video showing the Lenz’s Law at work. We have seen this demonstrated before but the effect never gets old.

Via: Adafruit

January 21, 2014

RumbleRail – Floppy Disk Jukebox

at 6:51 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks, Insane Equipment, What Were They Thinking

 _rr_lumi_1

 

 If you still have a few floppy drives left over after making your Floppy Drive CNC machine have a look at making some music by making a Floppy Disk Jukebox!

 “The overall setup is completly modular. Each floppy is connected to its own floppy driver (rrfdc), which in turn speaks I²C with the main board (rrcmd). On power-on the main board auto-discovers the connected floppies and adjusts the software to utilize the available drives. In theory the amount of floppies connected to RumbleRail is only limited by I²C address/bus restrictions.

The most important feature of RumbleRail is the ability to run standalone. After being powered-on, the main board scans the hotswapable SD card (rrsdc) and lists its content on the display. The user can browse through the selection using the rotary encoder and, once a song is selected, the main board decodes the MIDI file and streams the notes to the floppy drivers.”

 

 


December 21, 2013

Arduino used in Semi-Automatic Production Line Equipment

at 7:54 pm. Filed under Insane Equipment, What Were They Thinking

Arduino used in Semi-Automatic Production Line Equipment

 

When you walk through a factory full of automated machines that are doing repetitive tasks you will usually see a large metal electrical cabinet beside each machine. Inside that box will most likely be a PLC that is controlling the machine by monitoring inputs and controlling motors and valves. This all sounds fine until you look at the price of this equipment, $10 or $20K will get you a decent PLC system but you will get a truck load of Arduino gear for that.

Alexander Kozusyev turned to Arduino to provide some simple automation to a production line. I can just imagine the amount of money that was saved. I understand that an Arduino isn’t a true comparison to the rugged nature of PLC equipment that will run in the nastiest production environment in sweltering heat 24 hours a day. But in some situations I think it might make an interesting alternative.

Via: Arduino Blog

“Production line has two independent CNC 3-axis manipulator. The first spraying of release agent. Second automatic pouring polyurethane into the mold. Before spraying or pouring read RFID unique code for the mold, and then loads the G-CODE from the database server based MySQL. After pouring, the mould is moved to the waiting area.”

 

December 1, 2013

Ambient Backscatter – Wireless Power and Communication with No Batteries

at 7:10 am. Filed under Cool Gadgets, Insane Equipment

 ambient_backscatter

 

Today we have lots of battery free electronic devices such as RFID which in most cases gets powered wirelessly from the reader. What would the world of electronics be like if our small electronics that only consumed a small amount of energy could be powered by the RF signals that are already around us. Ambient Backscatter does just this and has an endless number of interesting applications. Just think of the possibilities of device placement if servicing batteries was no longer a concern. In our modern cities we have no lack of RF noise so device placement should not be an issue.

I have no knowledge in this field so hopefully someone can chime in here. If this becomes popular and we have tens of thousands of these devices all over the place will the load on transmission towers increase due to this power leaching? Will TV and cell towers need to increase their power output to achieve the same coverage as they had before these devices were being used?

 “Ambient Backscatter transforms existing wireless signals into both a source of power and a communication medium. It enables two battery-free devices to communicate by backscattering existing wireless signals. Backscatter communication is orders of magnitude more power-efficient than traditional radio communication.”

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