Hacked Gadgets Forum

January 22, 2013

How to Build a Tiny Surveillance Spy Bug

at 11:25 pm. Filed under Cool Gadgets, Electronic Hacks


Dazaro3 shows us how to make a Tiny Surveillance Spy Bug in this video.  Dazaro3 makes the PCB using the toner transfer method. Since the board is very small (9mm X 9mm) and the parts and even smaller assembling the thing looks very difficult!  The result is a super small device though.

“Parts used:

Home made PCB ,9mm X 9mm

SMD 2N3904 transistors x 1
  (All capacitors and resistors are SMT 805)
1nf ceramic capacitor x 1
10pf ceramic capacitor x 2
33pf ceramic capacitor x 1
22nf axial ceramic capacitor x 1
1 – 5p to 30p air trimmer
100R resistor
5.6K resistor
3mm Mic
165cm antenna
CR2032Battery holder”

January 20, 2013

Remote Controlled Car using Carambola

at 10:59 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks



If you are looking for a new remote platform Carambola might work for you. The Carambola Core is a small module that is only 35×45 mm (larger if you use the development board), open-source and Linux friendly. It allows for simple wired and wireless networking capabilities to connect to everything around you. This Remote Controlled Car takes full advantage of this to allow this car to be driven around wirelessly using the camera for full navigation.

Via HG Comments.

“Used parts



January 19, 2013

Name the Thing Contest – 218

at 11:09 am. Filed under Contests



The prize this week is a breadboard power supply. This contest will run for one week (January 19 2013 – January 25, 2013). Ending time is based on central standard time. To enter, identify the item above and what it can be used for.

Please do not give the answer in the comments.

Send an email to contest @ hackedgadgets.com with “Name the Thing Contest” as the subject, and the message body consisting of:

  • The name of the item in the above picture
  • An example of what the item pictured above can be used for

The winner will be chosen at random from all of the correct entries.


Added Feb 2, 2013

The item to guess was a SN7474

The winner is Clement (there were 217 entries)


Below is a picture of the prize.



PIXEL – Interactive LED Art

at 10:47 am. Filed under Cool Gadgets, Electronic Hacks

PIXEL - Interactive LED Art


If you like pixel art or want to see some of the 80’s video game graphics again the PIXEL Interactive LED Art Mirror might be for you. The project is a continuation of the Haunted Mirror project that we saw before, Al Linke has started a Kick Starter for this one and the funding goal has been met so you can pledge one there and get one.

“PIXEL Guts includes:



January 18, 2013

Pendulum Clock Auto Tuner

at 7:18 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks

 Pendulum Clock Auto Tuner


Pendulum clocks are wonderful works of art but they aren’t always the most accurate time keepers. Keith, who we featured back in 2009 for his Servo Guitar has built an automated solution to keep pendulum clocks in time. He uses a hall effect sensor to monitor the pendulum swings. An Arduino circuit is configured to count the number of  transitions on the AC power supply that feeds the project. In North America we have 60 hertz AC power which means that there should be  3600 transitions per minute. In the old days clocks used to rely on there being 5,184,000 transitions per day, if the power frequency drifted so would the time on the clocks. Each minute Keith computes how many times the pendulum should have swung compared to what it actually did. A servo controlled metal bar is raised or lowered to add or remove some magnetic drag to slightly adjust the pendulum swing speed.

 A schematic is provided and I am sure the Arduino source code would available to those who ask nicely.



January 16, 2013

Espruino – JavaScript Interpreter for STM32 ARM Microcontrollers

at 4:41 pm. Filed under Cool Gadgets, Electronic Hacks

Espruino - JavaScript Interpreter for STM32 ARM Microcontrollers


Looking for a new powerful development environment to hack together some quick powerful projects? Have a look at the Espruino. It is a  JavaScript Interpreter for STM32 ARM Microcontrollers which will let you get up and running fast because there is no IDE running on your computer. Just connect to the device and start programming. The pricing looks very attractive also.

Thanks for sending in the tip Gordon.

“How do you use it?

Just plug a Microcontroller with Espruino on into your PC, Mac or Raspberry Pi, and start writing JavaScript immediately in a serial terminal (no software is needed on most computers!).

You can easily execute functions after a period of time, or when an input changes state… And when Espruino is working as you want, type save(), and whenever it powers on it will restore itself to the exact same state.

You can even add a bluetooth module and program Espruino wirelessly.

And if you just need an IO board for your PC, Mac, or Raspberry Pi, Espruino can do that too! Just plug it in and control IO lines directly from your application or script by sending JavaScript commands!”



January 15, 2013

Color Organ

at 2:55 pm. Filed under Electronic Hacks

Color Organ


There are some projects that provide you with hours of enjoyment. This Color Organ is one of those types of projects since you can play different songs and watch the dancing colors. Ledartist goes through all of the parts needed for the project and some of the issues in developing the circuit. Hearing about problems is great since you can learn what not to do without going down the path yourself. It is completely analog and uses very common parts, chances are you have all of these parts (or compatible parts) in your part bins. 

If you are interested in purchasing a kit version you are in luck, you can get it here.

“There were a few problems. The transistors in the circuit was biased in the way that it was supply voltage dependent, as well as device dependent – in other words, if the voltage was too high or too low, or the transistors had a bit of different characteristics, the circuit did not perform well. The filter performance was also a bit poor – the separation between the frequency bands were not so great.”


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