Hacked Gadgets Forum

August 21, 2015

Reflow Part Melting

at 10:54 am. Filed under Educational, Electronic Hacks


You need to be careful when reflowing parts on your circuit boards. Different plastics can lead to a bad day for you parts. If a part was just meant to be wave soldered the actual part may not be capable of the extreme heat and duration of the reflow process. Dave found this out the hard way when he was attempting to reflow a board from a TV that was being repaired.


August 20, 2015

DIY Speaker

at 8:50 am. Filed under Cool Gadgets, DIY Hacks

DIY Speaker_3


There are easier things to make than a DIY speaker but the essential pieces of a speaker are able to be cobbled together in your workshop. It may not sound better than a $5 store bought one but at least you can say you built it with your own hands in your workshop. As Gursimran Singh mentions you might need a small amplifier to get a bit more volume out of the device but the feeling of accomplishment should give you a nice glow that the sound you are hearing is coming from a device that was built using your hands from some scrap parts.

“For this to be made we need:

  1. A cup made of paper in the last second step I would explain you to make it when not having a paper cup.
  2. Insulated copper wire (take it from old cfl or from ting-tong bell)
  3. Magnet(we can get it easily from market)
  4. AUX cable
  5. AUX cable port(get it from old radio)
  6. Duct tape
  7. Paper Sheets.”


DIY Speaker_2



 DIY Speaker_1


August 19, 2015

Elev-8 Quadcopter Controlled With An Ardupilot Mega Autopilot Build

at 3:42 pm. Filed under Crazy Hacks

Wired Up_zpsc2a8mawk


GlassKNees takes us through the build and what was needed to get this quadcopter working. Upgrading the quad to the APM controller required a few modification such as prop rotation to work, this is just since this is not standardized.

“The GPS/magnetometer are inside the white dome, the telemetry transceiver is the little green circuit board on the left with the antenna pointing down – the board has a clear plastic sheath for protection. I’m using a Spektrum 6 channel receiver mounted to the right of the APM. Power comes from an APM power module that I spliced into the power distribution harness.”


Internal Wiring_zpsmqzp8o7p

August 17, 2015

DIY Car Compass

at 11:19 pm. Filed under Cool Gadgets, DIY Hacks

DIY Car Compass


If your car doesn’t show you the direction you are traveling it would be handy to build this DIY Car Compass. DaAwesomeP built this neat device, most cell phones have this capability but it is nice to have a piece of hardware doing the work in a fixed location. A Pro Mini is used to read in position data from a magnetometer and then output the results on a nice OLED display.

Via: Arduino Forum


  • Arduino Pro Mini 328 – 3.3V/8MHz I got the 3.3v version for simplicity of connecting it to the other 3.3v parts (Sparkfun).

  • SparkFun Triple Axis Magnetometer Breakout – HMC5883L This compass breakout can be mounted in any orientation (Sparkfun).

  • SparkFun Micro OLED Breakout This is the screen form the MicroView, but the Arduino + Screen is cheaper than the MicroView and its programmer (Sparkfun).

  • Protoboard It doesn’t matter what you use, but this is what I got (Sparkfun).

  • Power Source I just cut the end off a 30-pin 5v car charger that I had. It was useless and lying around. The Arduino can handle an input from 3.3v to 12v DC.

  • Thin wire You’ll need this to make jumper connections on the perfboard. My was about 24 AUG. I used both stranded and solid wire for different parts.

  • Headers This will make it easy to attach the components to the protoboard.
  • Why no accelerometer? An accelerometer would allow for automatic adjustment of orientation and declination angle, but this is mostly intended to be a more permanent thing, and you can learn about how the declination angle works.”


DIY Car Compass_3

August 16, 2015

DIY Torque Tester

at 11:27 pm. Filed under Cool Gadgets


 AvE takes apart tons of tools and when he wanted to measure torque he didn’t want to spend thousands of dollars for a professional system. He ordered some parts from ebay, connected them up to an arduino and output some serial results direct on his computer. The main component that is doing the work is a load cell which outputs a small resistance change when force is applied to it, a bit of calibration and he was in business.


August 15, 2015

Newport Transporter Bridge

at 11:45 pm. Filed under Crazy Hacks

Newport Transporter Bridge_3


We drive across bridges all the time and take them for granted. Have a look at this 100 year old Newport Transporter Bridge. The design is absolutely fantastic. Not practical for high volume traffic but for the time this was a very novel solution and it is still operating today.

“The height of the towers is 73.6 metres (241.5 ft), and the height to the underside of the main girder truss above the road level is 49.97 m (163.9 ft). The span between the centres of the towers is 196.56 m (644.9 ft), and the clearance between the towers is quoted as being 180.44 m (592.0 ft); however, including the cantilevered sections, the main girder truss gives the bridge an overall length of 236 m (774.3 ft). The distance between the centres of the anchorage caissons is 471.06 m (1,545.5 ft). Power to propel the transporter platform or gondola is provided by two 35 hp (26.1 kW) electric motors, which in turn drive a large winch, situated in an elevated winding house at the eastern end of the bridge. This winch is sufficient to drive the gondola through its 196.56 m (644.9 ft) total travel at a speed of 3 metres per second.”





Newport Transporter Bridge Car Gondola


August 14, 2015

How a CPU Works

at 2:24 pm. Filed under Educational


Here is a great video that explains how a conventional CPU operates. Now of course when we are dealing with a microcontroller most of this is on the single chip. This Visual Transistor-level Simulation is interesting to see what is going on.

Internal Links:



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