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In order to be able to read from the output of the digital temperature sensor, I wrote algorithm to test it out.
At the beginning, I made use of both ccp1 and ccp2 to capture rise and fall of the...
Mosfet being tested out. A big resistor is needed between the gate of the MOSFET and the ground as MOSFET can be considered as a small capacitor, and without the resistor the MOSFET will charge...
The program like the following output values on the hyper terminal shows all the results and analysis in test1.txt file.
#include <16F77.h>
#fuses HS,NOWDT,NOPROTECT,NOBROWNOUT
#use...
tested the logic buffer. With a 5.04V input, the output is 8.76V with a 8.76V supply, which provides a larger voltage that could switch on the mosfet completely and may also supply larger current...
Things done:
Construct the op-amp circuit, with Vcc/2 circuit combined with the voltage amplifying part. However, the op-amp constructed only has 1 as gain instead of 2 the supposed...
Continue investigating in the issue of counting the time for t1 and t2. Previously (15th july report) when the delay is set 1ms, the count is correct but in integer, so we cannot get the decimal...
Use method of count. As every cycle, there will be a constant of time taken to execute the cnt = cnt +1 statement and the delay statement, we put it as const, and use this formula cnt*delay +...
The schematic diagram of my final PCB design:
Things done in this week:
Choose Mosfet for just for one pixel
Based on criteria in __http://homepages.which.net/~paul.hills/SpeedControl/Mosfets.html__
1. N-channel
2. Vds(max) I chose it to be...
The following is footprint of the final PCB design
There are mainly three considerations in the footprint design:
Separation of GNDs and POWERs
There are two voltage regulators to generate 9V and...
We have selected a moderately low-rated mosfet for our circuit application which has a max Vds as 60V and a max Id as 0.4A. But it was mentioned charging the capacitor in the MOSFET in order to...
From a HCI perspective, a device for remote communication between parent and child to recreate hug and touch is more than simply sensing the inputs and reproducing the outputs on the receiver.
The...
UPDATE 9 October 2007:
A suggestion from Dr Keiji Yamada of NEC, is to consider using armband or Internet Pajama in the face-2-face interaction, instead of only focusing on remote interaction.
This...
In this project, we want to map distance of separation between parent and child to a range of colors. Instead of using the word Far and Close for the mapping, a cool, dull color such as dark blue...
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These questions are asked to determine the importance of the project, and to design the interface, system and experiments to be conducted. The eventual objective is to contribute to the area of...
The input sensing interface functions as a device for the affect giver to communicate to the receiver. It senses human touch and varying levels of pressure associated with the touch and transmits...
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From the problem of the simple circuit I showed Prof Cheok, there are several parts needed reconsider and design. I summerized them as below with some thoughts and proposed solutions provided:
1....
The output actuation is a control system that outputs accurate air pressure level determined by the user. It mainly uses air pumps and vacuum to control the amount of air in an air bag, with an air...
Report should be Titled by Name and Date.
I have completed the body design of the doll. The arms and the head are to be done as yet.
A view of the doll is as below.
The one on the left was the original design and the one on the right is...
The design of the doll was edited again to send to noriyoshi. The updated design with the dimensions is as follows
Right now the dimensions for the front and back circuits is of the ration 2:1
The picture of the Parker pump we bought is as follows
As seen here if we connect the tube leading to the arm band to the inlet of the pump then the pump will act as a vacuum and suck out air from...
Introduction
A HCI Perspective
Survey Questionaire
Brainstormed Ideas
Technical Development
Research Plan / Timeline
Input Sensing Interface
color-display-fabric
Output Actuation
Useful...
Members:
Moderators
Admins
Input Sensing Interface
color-display-fabric
I finished testing the sensor circuit and finalize the design as bellow:
This design gives us the flexibility to create many shapes for the doll’s body while keeping the QTC sheet lying flat on...
Update report 1 : 18/05/2007
Plan:
Use 3 push buttons made from QTC pill as inputs for emoticons.
Use 4 low power LED (those can run at only 2mA) for force level display.
Supply PIC with 3.3 V...
Current measurement for the second input circuit prototype:
Component
Current drawn
Bluetooth
18mA during scan mode; 28mA during data transferring at 9600bps
PIC
3.25mA
LED
1.35mA/...
Unlike the process of developing the normal DIP package PIC, I foresee a problem when we developing SOIC package PIC (and other SMD packages also). That is we need to either implement in-circuit...
We had the final decision for PCB design on Wednesday. In total we will have 6 PCBs. Sound a lot but the biggest board has the size only 3x4 cm and the the smallest is 1x2 cm. All PCBs...
example group
example item 1
example item 2
contact
reiHuggable
Introduction
Internet Pajama is a novel wearable system aimed at promoting physical interaction in remote communication between parent and child. This system enables parent and child to hug one...
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