Archive for the ‘IR’ Category
Once launched, the ArduSat will be the first open platform allowing the general public to design and run their own space-based applications, games and experiments, steer the onboard cameras to take pictures on-demand, and even broadcast personalized messages back to Earth.
ArduSat will be equipped with several sensors (such as cameras, gyros, accelerometers, GPS and more) packed inside a small cube (the side will be approximately 10 cm long) that can be accessed through a set of Arduinos.
Once in orbit, the ArduSat will be accessible from the ground to flash the required firmware for the experiments and for getting back all the collected information. People interested in performing space experiments will have access to a ground replica of ArduSat explotable to test and debug their code before the actual deployment.
The project is very ambitious, and it is expected that such an open accessible space platform will have a considerable impact on how simple space experiments will be carried out in the forthcoming years, in the case of fundraising success.
You may find the Kickstarter page of the project here.
SAMSA is based on the Wiring board, with an ATmega128 microcontroller, and SAMSA II on the Arduino Mega, with an ATmega1280. Both are pretty similar, tough the ATmega1280 has 8 KB SRAM, twice the ATmega128. For SAMSA II the Arduino IDE was not used. The software was written directly in C++, using some libraries from both Arduino and Wiring.
SAMSA II has also two additional microcontrollers. One is an old Arduino Mini (ATmega168) located in the head, tasked with handling the sensors. The other is an ATmega8 and is integrated in the display. The firmware in the display was replaced with another one, freeing the main microcontroller from handling the display pixel by pixel, storing the frame buffer, etc.
The head’s microcontroller is responsible for sampling, filtering and processing sensor’s data. The data from the Sharp distance sensor and the lateral IR sensors are combined in a single “super smart distance sensor”. This microcontroller also decodes the data coming from the 38 KHz IR receiver, used for the Remote Control.
These two additional microcontrollers further reduce the load on the main microcontroller, allowing for more sophisticated behaviours.
Multi-touch Input Sensor based of Arduino MegaMulti-touch Input Sensor based of Arduino MegaMulti-touch Input Sensor based of Arduino MegaMonday, October 25th, 2010
Possible low-end solution for multi-touch surfaces based on Arduino Mega:
So i’ve been working on this project for a while now as part of my thesis and independently and work is still continuing. So just an overview the project is a multi-touch and multi-modal input sensor that can be utilised behind traditional LCD panels utilising a new method to detect inputs. By using a large IR sensor array consisting of 128 sensors behind the LCD panel and IR light source in front of the Panel we are able to augment the display with the ability to sense a variety of objects near or on the surface; including fingers tips and hands and thus permitting us to enable multi-touch interaction. The inherent nature of the senors allows us to create a low cost high fidelity image sensor allowing us to take advantage of optical sensing which also allows other physical items to be detected, and thus permits us to develop multi-modal interaction schemas.
Amazingly done with Processing and a simple Arduino Mega board.