Hacked Gadgets Forum

July 22, 2014

Mini FM Transmitter

at 9:12 am. Filed under DIY Hacks

mini-fm-transmitter

 

If you are looking to get into the spy game have a look at your first gadget you need here, it is a Mini FM Transmitter.

“It transmits FM waves so you could easily receive the signals on your mobile phone, radios, etc. As the name and the picture indicates it is very small and is approximately the size of a 9v battery clip. With this FM transmitter you could start your own mini FM station. The circuit uses BC547 transistor to amplify the signal and then frequency modulate it. It uses “frequency modulation” most commonly known as FM, the same principal to transmit audio signals captured by the microphone.

Components

BC547 Transistor
An microphone
A variable capacitor 47pf
An Inductor (see steps for description)
4.7k Resistor
330ohm resistor
1n capacitor (102)
10p capacitor
9V battery
LED(optional) “


July 20, 2014

Richard Turere Invents Livestock Protection Device

at 9:28 pm. Filed under Cool Gadgets, DIY Hacks

 Richard Turere Invents Livestock Protection Device_2

 13 year old Richard Turere lives in Kenya. Livestock is very important in their community, however lion are very smart and often kill their animals. The lions wait till everyone goes to bed before attacking. The first attempt at outsmarting the lions was to build scarecrows but the lions soon realized that since they were not moving around that there were not real people and didn’t pose and danger. Using a solar panel to gather electricity, a battery to store it and a car turn signal flasher to blink some lights he was able to place some lights at random locations around the pasture. This makes the lions think that there is someone walking around watching over the livestock at night. What a ingenious idea from such a young inventor.

Via: Hackaday

 

 

Richard Turere Invents Livestock Protection Device

 

Richard Turere Invents Livestock Protection Device_3


July 19, 2014

Blackstar Hexcopter

at 7:45 am. Filed under Cool Gadgets

 

If you are getting into quad and hexcopters have a look at this one that Atarix777 demonstrates. He has built it in a way to keep the cost down without sacrificing performance. It has a total weight of 2.3KG so it sure isn’t a compact unit! It is an FPV system which allows the user to view the image of the on-board GoPro. Check out the 11 minute mark for a nice flight around.

 


July 18, 2014

Fletcher Destroyer Transmitter

at 11:20 pm. Filed under Cool Gadgets

 

JLTSoft demonstrates how his Fletcher Destroyer Custom Transmitter works. Instead of just making a remote that would directly command the servos and motors as fast as they can be the transmitter is designed to reproduce the actual delays that would be present in the real ship. There is an Arduino that controls the transmitter and the audio clips are stored on an SD card.

 

July 16, 2014

Maker Camp Season 2014

at 2:00 pm. Filed under DIY Hacks

 Maker Camp Season 2014

 

 Check out Maker Camp 2014, a great way for kids to have some fun building projects. Check out the guest Buzz Aldrin who was a guest in the video below. There are some audio issues that make the video a bit hard to watch but if you can get over that it is worth it.

About Maker Camp

Maker Camp is a free summer camp for building, tinkering and exploring available online and in local neighborhoods. Through Google+, YouTube and local “campsites” young inventors and artists around the world can make awesome projects, participate in epic virtual field trips and meet the world’s coolest makers.

 On Mondays through Thursdays, new projects are introduced every morning by an expert “Guest Maker” who walks campers through the steps to making the project, offering tips and advice. In the afternoon, the mentor hosts a Google+ Hangout on Air to offer campers a chance to ask questions, and share their projects with photos and videos. On Fridays, the Camp Director hosts a virtual field trip to epic destinations via a Google+ Hangout-on-Air, broadcasting a live experience to anyone who wants to tune in on Google+ or YouTube. This year, campers will get to visit Google’s self-driving car group, NASA, Disney, LEGO and more.”

 


July 15, 2014

OpenCdNC – CNC Project Made from CD Rom Drives

at 11:19 pm. Filed under DIY Hacks

OpenCdNC - CNC Project Made from CD Rom Drives_2

 

Using more thumb drives than CD-Rom drives these days? If you have a pile of them in the closet you might want to blow off the dust and give the OpenCdNC a try. It is a CNC Project Made from CD Rom Drives! The accuracy looks great.

Thanks for sending this in Leonardo.

Hardware
1x Microchip PIC16F628A
3x Easy Driver v4.4 Step Motor Driver
1x PL2303HX USB-Serial TTL Converter
3x CD-ROM Drives
Some wood/screws for frame and wires for electronics”

 

 

 

July 14, 2014

PIC32 Oscilloscope

at 6:03 pm. Filed under Complex Hacks

 PIC32 Oscilloscope

 

Bruce Land sent in a tip that can help you save ADC data from a PIC 32 really fast. This can come in handy when you are doing things like reading in analog data for something like an Oscilloscope.

“Bruce Land wrote:

Turns out that the DMA channels on a PIC32 can move data from the ADC using the ADC done interrupt flag, but without wasting time in an ISR. The ADC can be triggered by a timer interrupt flag, again without software intervention. Doing this means that you can blast ADC into memory at just under a Megasample/sec with NO software overhead!

Using another DMA channel to feed memory to a buffered SPI port means that video data can be streamed to a TV with less than 7% software overhead, sustaining a 5 megabit/sec pixel rate. Most of the video overhead is in the SYNC generator state machine ISR. But the rigid NTSC time requirements are easy to meet because all the actual SYNC generation and video timing are also done completely in hardware with no software intervention. One timer triggers two output pulse generators, one to generate SYNC, one to time the video “backporch”.

When the backporch pulse gen times out, it triggers the video DMA burst from the frame buffer in memory to the SPI port.

A simple 3 resistor DAC combines the SYNC and video stream. Resolution is 256×200. There is plenty of CPU left for FFT or game generation.”

 

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