Hacked Gadgets Forum

May 28, 2016

IOT Long Runtime

at 6:18 pm. Filed under Cool Gadgets, DIY Hacks, Educational, Electronic Hacks

 

 

With the adoption of IOT long runtime on battery power is something that is a huge concern. We don’t mind charging our smartphones daily but if we have a dozen IOT devices in our home we would like them to be invisible and just operate for as long as possible without needing attention. Andreas Spiess has done some research using the popular ESP8266 and a variety of batteries. In his test he was sending data to an IOT database every 2 minutes but for many cases you may only need the device to wake and transmit once per hour, this would greatly extend the battery life.

 

 

 

 


May 22, 2016

Spring 2016 Cornell University ECE 5760 Advanced Microcontrollers Final Projects

at 8:09 pm. Filed under Cool Gadgets, DIY Hacks, Educational, Electronic Hacks

flowchart

 

It is that time again! There is a new batch of Cornell University ECE 5760 Advanced Microcontrollers Final Projects. If you have done any PID work in the past the FPGA controlled Magnetic Levitation by Gautham Ponnu, Ryan Land, Nathan Spallone should be of interest. They are using a Altera DE2-115 FPGA board to monitor and control a steel ball about 1mm above the position sensor with great accuracy.
“The LDC1000 inductive sensor from Texas Instruments. This device acts as a mini “metal detector” and tells us, albeit in a nonlinear fashion, the height of the ball. The output is nonlinear because it is measuring the presence of metal through inductance, not the direct elevation of the ball from the sensor.”

 

entire_sch

 


May 6, 2016

Digital Caliper Data Plug Build

at 12:14 am. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks

 

Bob over at Making Stuff didn’t want to purchase an expensive cable for his digital calipers, instead he decided to build it. A small 3D printed grooved part with a few connected wires is all that is needed to connect to the data output port of the calipers. A logic level converter is needed to change from 1.5 volt output of the calipers a voltage high enough for a solid logic level 1. Now this can be used as a precision measurement input on a microcontroller project.

 


May 2, 2016

Laser Transmits Audio Over 100m

at 4:24 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks

 

If you are looking to send some data or some audio over a fairly long distance wirelessly you can have a look at this very cheap solution if line of site will work. Iforce2d is using a very inexpensive laser diode and receiver to get the job done. This code is what does the heavy lifting as far as getting the data across the link.

 

 

April 28, 2016

Table Tennis Trainer Project

at 9:35 pm. Filed under Complex Hacks, Computer Hacks, Cool Gadgets, DIY Hacks, Electronic Hacks, Game Hacks, Insane Equipment

interactive_table_tennis_trainer_by_thomas_mayer_1

 

If you enjoy table tennis this trainer might be a great next project. Thomas Mayer created this as his bachelor thesis project. Two Playstation CL-eye cameras are used to view the play area and track the ball. A project is then used to display game elements that the players can interact with to play many game scenarios. The game was created using VVVV which is a visual/textual live-programming environment for easy prototyping and development.

Via: Technabob and Gizmodo

“The basic idea of my bachelor thesis was to track the ping pong ball in realtime to create data visualisations for trainers and players. After a few weeks of working I started developing a projected mapped interface for the ping pong table to show the collected data. By projecting game obstacles on the surface I figured out that I can change the game play totally.”

 


 


April 21, 2016

Mechanical Television Build

at 2:56 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks


 
 
Ben Heck and his team built this Mechanical Television. It uses holes drilled into a vinyl record which is spun with a light source behind it. A light sensor is then used to determine the amount of light that is reflected off the surface of the item that they would like to transmit. A complimentary rotating disk with a controlled light source is used to duplicate what the first system is seeing. The build didn’t quite work in the end but the techniques and information that we see along the way is worth it.

 

 

DIY Volume Control Builds

at 12:22 am. Filed under Computer Hacks, Cool Gadgets, DIY Hacks, Electronic Hacks

 

 

If you are tired of reaching for your tiny volume control knob to adjust your music when using your computer look no further than these projects by Engineering Nonsense and DIY Perks. The top one uses a DIGISpark board and a rotary encoder to adjust the volume via USB and the one below uses a potentiometer to adjust the analog output of your signal feeding your amplifier.

 

 

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