Hacked Gadgets Forum

February 18, 2014

DIY Smart Watch

at 11:29 pm. Filed under DIY Hacks, Electronic Hacks

 DIY Smart Watch_1


Smart Watches are taking quite a while to catch on. I think when the price comes down to the $50 range or they are included with your smart phone I think we will see mass adoption but until then I think they will remain rare. But if you want one now and have time for a new project why not build your own! With a few well chosen building blocks you can plug a few things together and quite quickly have a functional smart watch. The watch above was built using a Arduino Pro Mini, HC-06 Bluetooth module and a 0.96’’ OLED display

Via: Hack a Day

“Imagine a very small computer that you can wear on your wrist. Arduino board is a micro-processor and a storage, and there’s only one input method : a button. Bluetooth is to communicate with other devices, and the battery would be necessary for power. I’ll install an Android app for collecting or editing various RSS and system information and for notification on the Android device. This app will also process the data because the Arduino board has very limited resources.”


DIY Smart Watch_3

February 17, 2014

Open Bitcoin ATM

at 10:08 pm. Filed under DIY Hacks, Electronic Hacks

Open Bitcoin ATM


This Open Bitcoin ATM might be a simply way to distribute Bitcoin in establishments that want to use it for sales. Just make sure no one walks away with the big box of cash.

“Open Bitcoin ATM is the worlds first open-source automated teller machine for education and experimentation.

Want to make one? Here’s a step by step tutorial. It takes about 7 – 10 hours to build with simple tools. Cost of components are less than $500 new but used parts can be purchased for even less on eBay.”


February 11, 2014

Arduino Plant Mister

at 10:17 am. Filed under Cool Gadgets, Electronic Hacks


When you walk through the garden section of your home store in the summer you will see a bunch of misters spraying the plants every now and then to keep them moist. Johnny Klaus has built a system that will mist his plants using an Arduino that is pumping a spray bottle using a 12 volt door lock motor. I think this system could also be used to keep those darn kids off my front porch, just have an Arduino count the number of door bell rings in a 10 second time frame and if it is greater than 3 give them a spray of water!

February 7, 2014

Intercom made from a Pair of Corded Phones

at 10:48 am. Filed under Cool Gadgets, Electronic Hacks

Intercom made from a Pair of Corded Phones


Got some old corded phones kicking around from the days before 3 and 4 handset cordless system took over? Why not make them useful again by making an intercom from the. Growing up I remember seeing all of the 2 and 3 station intercom system in the Radio Shack magazines, I always wanted a system in our house no matter how impracticable it would have been. In about 1/2 an hour using a resistor, a battery snap, some heat shrink and a 9 volt battery you should have a great new intercom!


February 6, 2014

Long Nose Robot of Death

at 12:24 am. Filed under Complex Hacks, DIY Hacks, Electronic Hacks



Ok, it isn’t actually not a Long Nose Robot of Death even if that is what it looks like… :) It’s a Raspberry Pi controlled Tank that can shoot BBs. This tank was mostly 3D printed and uses a Raspberry Pi since the original idea of using an Arduino was shot down due to lack of processing power.

“What features I want this tank to have?

  • Remote controlled
  • Suspensioned idle wheels(like the real tank!)
  • Has a rotatable turret and a tilting BB gun can shoot 6mm bullets
  • Can stream video to the controller so you can control it far away”


February 4, 2014

Fluke 196B Handheld ScopeMeter Repair

at 1:37 pm. Filed under Computer Hacks, Electronic Hacks


Over at The Signal Path Blog  Shahriar Shahramian has a look at a Fluke 196B Handheld ScopeMeter that he purchased from an eBay seller. The meter was purchased for a few hundred dollars and was listed with a fault that is doesn’t power up. It didn’t come with probes, a back cover or the battery. Shahriar was ready for a full tear down and hopefully a repair but as it turns out the meter worked just fine! Not sure how cheap these surplus dealers get some of these test gear lots but I am guessing it is pennies on the dollar of operational value and they just sell them as non working because they can’t be bothered (or don’t have the capability) of performing any functional testing. Good thing is we get to see a full tear down of the meter along the way. At 32:40 you can see an interesting method of chip cooling and shielding that fluke has used in this unit. This thing is built very well as you would imagine for the price point and the fact that it is a Fluke.

February 1, 2014

DIY 4 Channel Electronic Load

at 11:49 pm. Filed under DIY Hacks, Electronic Hacks

DIY 4 Channel Electronic Load


Instead of keeping a dozen sizes of power resistors on hand to test your variety of power supplies an electronic load allows you to dial in the exact load you are looking for.  This DIY 4 Channel Electronic Load that gelbanana built allows you to connect a bunch of different items to load test at once. The cabinet is recycled and a custom cut piece of clear acrylic is used as the face plate. 

“Here’s my attempt to build a 4 ch electronic load. I’ll be using IRFP240 Nch mosfet. Each could dissipate 150w of heat @ 25°c.
Specs: Should be able to sink at least 5A per ch. Able to combine all 4 ch to aggregate into a single high current ch.”


DIY 4 Channel Electronic Load_2

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