Hacked Gadgets Forum

October 31, 2014

CNC Pumpkin Carving

at 11:06 am. Filed under DIY Hacks

 

I will need to give this a try one of these years. CNC Pumpkin Carving creates some great looking results!

 


October 27, 2014

DIY Electronic Fish Feeder

at 11:28 pm. Filed under DIY Hacks

DIY Electronic Fish Feeder 

 

In this DIY Electronic Fish Feeder an Arduino microcontroller is used to spin a drill bit which is placed to work as an auger to meter out fish food. If you want to build you own Brian goes through the build step by step.

 


October 23, 2014

Can Crusher Project Build

at 1:12 pm. Filed under DIY Hacks

 

If you need to crush a bunch of aluminum cans you might as well build a machine to do it. That is what we see on the Ben Heck Show here. After Ben bent through a bunch of design submissions a cool design was selected. A single stepper motor crushes a can with a 30 to one gear reduction it can crush the can but isn’t able to crush the can completely. Not that the final design is ready for production but the design steps are very interesting.

 


October 19, 2014

Free Fun Flexible Watch

at 10:55 am. Filed under DIY Hacks, Electronic Hacks

 Free Fun Flexible Watch 

 

Check out the F*watch! It is a Free Fun Flexible Watch design by a team of 15 people with various backgrounds, the watch is a challenging project since in the end it can’t be the size of a lunch box, can’t weigh a pound and can’t be plugged into the wall for power. All of the electronics fit into a tiny printed housing and looks very functional.  Check out the items that are stuffed inside listed below.

“F*watch is a fully open electronic watch project featuring an integrated GPS receiver. The development started at CERN as an after-work project to make a special present for a retiring colleague who likes hiking and timing. The full design (electronics, mechanics and software) is available under free licenses and the design is exclusively made with free tools.

  • Sensors
    • GPS
    • Pressure sensor
    • 3D-accelerometer
    • Compass
    • Ambient light sensor
  • I/O
    • 128×128 pixels LCD with backlight
    • Micro-USB connector, 4 Buttons
    • Buzzer, vibrating motor
    • MicroSD memory slot
  • Various
    • 500 mAh Lithium-ion battery, fuel gauge
    • 4-layer PCB”

 

 

Free Fun Flexible Watch_3

 

\Free Fun Flexible Watch_2

October 17, 2014

Capacitive Fluid Level Sensor

at 11:28 pm. Filed under DIY Hacks

Capacitive Fluid Level Sensor

 

If you need to determine the level of fluid you might think of some type of float switch system like what is typically used in a sump pit or a toilet tank. This Capacitive Fluid Level Sensor by uses a capacitive effect of the fluid to determine the level.

“The advantage of capacitive level sensors is that they can be used for basically any solid and liquid. They have no moving parts and scales incredibly easy. They make no contact to the liquid or solid being measured, and so can also be used for more corrosive liquids. The disadvantage is that they need to be calibrated for the liquid being measured. The capacitive level sensor has the 2 conducting plates in the form of 2 electrically isolated aluminium tubes, a smaller tube in a larger tube. The space between the tubes is the dielectric. When the tube is empty, the space is occupied by air. when the tube starts to fill, more and more of the space will be occupied by water. Water holds more charge than air and thus the capacitance will rise (mostly) linearly with the water level. “

 


October 16, 2014

DIY LM1876 Audio Amplifier Project

at 1:46 am. Filed under DIY Hacks, Electronic Hacks

DIY LM1876 Audio Amplifier Project

 

Our friends over at Electro Labs has a new project out, it is a DIY LM1876 Audio Amplifier Project. As usual it is a start to finish project that has full details so you can build your own.

“This is an audio power amplifier based on LM1876 which can deliver up to 20W per channel into 4 or 8 ohm load and guarantees less than 0.1% THD + N (Total Harmonic Distortion + Noise).

The amplifier is powered by -15 0 15 VAC symmetrical supply. The full bridge diode rectifier and the smoothing capacitors convert the AC input to ±21 VDC which is used to power LM1876. The inductors on the AC input line reduces the noise arising from the mains line.”

October 13, 2014

blueShift – An OpenXC LED Tachometer

at 9:53 am. Filed under Cool Gadgets, DIY Hacks

blueShift - An OpenXC LED Tachometer

 

Inside the custom 3D printed housing Pete Mills built a LED Tachometer which gets engine data from a Open XC ODB2 module via bluetooth. It is looking for RPM and headlight status data from the module to update the user display. The headlamp status is used to dim the LED display when the headlights are automatically turned on by the car.

“An Arduino, some addressable LED’s, a bluetooth module, code and a 3D printer come together to make blueShift – An OpenXC LED Tachometer.  blueShift is so named for the Bluetooth protocol used for data communication, and the use of a tachometer to indicate when to shift your car.”

 

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