relavant website and book for revision
Laplace tranforms will help my signal output to be damped and so the rig would be stable. They are used with such applications as helicopters and the inverted pendulum:
www.intmath.com/laplace-transformation/intro.php
"Mathematical methods for physics and engineering" by Riley, Hobson and Bence.
- also a friend who studied pure maths at leeds university has offered to teach me how to understand the transforms.
Applying it in code. I wouldnt necessarily have to understand the laplace transform when applying it in code but I would consider it a great personal triumph if I could understand it.
There are a number of sites which can help with this however I would like to understand what the tranformation does in practise before implementing it.
I have acquired some digipots in order to control volts going to the rig. The pots can handle up to 30 volts but I only need 24v max. I have also acquired detailed information on the operations of the digipots.
Friday, 5 February 2010
Tuesday, 10 November 2009
Virtual Studio
The aim of this project is to produce and broadcast a virtual environment game show.
The main idea has come from an early childhood game show called Knightmare where the contestant is a knight with a blindfold who is being directed by a team of friends through a semi-virtual environment.
This game show differs in some respects and is based on a futuristic idea rather than a medieval one.
My main role is to provide a means of broadcasting the show across internet protocol (IPTV) I was also an animator, sound op, and engineer for the event.
For this I have drawn up a system diagram of how I would like to achieve this.
I need an SDI video output of the studio and an AES/EBU sound output.
These will be embedded (MUXED) and fed into a DSR-1500. This is a recorder which we can use to record a high quality copy of the show. It also has a 1394 Firewire output which can handle converting the muxed video and audio in real time and send them both to a MAC running a programme called WireCast. This programme has been written to handle streaming video across IP. It can apparently also handle the supposed HD formats. It uses Quicktime as a means of embedding a "hinted" video stream into a website.
UPDATE. The SDI Video and AES audio went into a DSR-1500 and was recorded onto tape. It was also output to Narrowstep as this could handle the muxed output and would achieve the same results as wirecast.
I need to speak with ICT about booking some time on the Ravensbourne website so that the programme can be broadcast on this site.
I never had time to speak with ICT but the programme was recorded and should now be in editing stages. It was also ingested into a server in the college building.
The show went really well for the timescale. I spoke with the vision mixer who worked on the original knightmare and apparently it took one week to shoot a whole episode. This was because of many technical issues between racking and graphics and the fact that there were kids which could have added to the time.
We fortunately had few setbacks although the transmission time did get pushed back serveral times. This ofcourse is unnacceptable in a live programme environment which is what we should have kept to. We used actors for the contestants and this helped much with the time. We also didnt have as many technical issues. We did have issues with mixing between delayed and undelayed sound which gave an echoing effect. The delay needed to be in place because one of the cameras was input into viz and this took processing time.
A way around this would be to DA the camera output and put a delay on one of the DA outputs. This would mean that all shots would have been in time and no undelayed audio would need to be used.
We also had issues with team members, there werent enough of us to cover all job roles and if we had found a crew we could have been more ambitious with the shots. The final programme was entirely locked off shots. We could have also had a second viz animator for the live showing and achieved more effects. 2 animators were used in the making of animations and effects but only one was used for the show.
The script was entirely cheesy but it played well as there was a comedic aspect to it.
There was no clear person who was production manager and so we all took on responsibilities that some could not manage. If we had a production manager from the start who could keep a clear view of the production ahead and communicate it across effectively we could have had a much more proffessional show. We had issues with learning viz at first but after throwing ourselves at the software we managed to piece some bits together and came to understand how the filing system works as well as troubleshooting problems.
We could have had many more job roles and responsibilities to make the show look and work better. I,e a lighting director and racking op, a few sound effects on disc for extra effects,
the presentation didnt go very well as people were speaking over each other and not being very clear on what they wanted to say. we also didnt critically evaluate the learning cycle and needed some structure to the presentation. nothing was received in terms of a powerpoint presentation which was the responsibility of certain team members who hadnt really done much in the way of work to contribute to the project and two of the team members didnt show for the presentation. I was dissapointed at this as the event was a team effort and didnt just simply finish when the programme was finished. This is the same mentality which happens in the broadcast industry and is not one which leaves good feeling amongst those who tried hard.
even if there was a production manager for the production and presentation i dont think this would have solved the problem it was up to the team to tell others that they hadnt pulled their weight which happened. its just some people didnt listen.
The main idea has come from an early childhood game show called Knightmare where the contestant is a knight with a blindfold who is being directed by a team of friends through a semi-virtual environment.
This game show differs in some respects and is based on a futuristic idea rather than a medieval one.
My main role is to provide a means of broadcasting the show across internet protocol (IPTV) I was also an animator, sound op, and engineer for the event.
For this I have drawn up a system diagram of how I would like to achieve this.
I need an SDI video output of the studio and an AES/EBU sound output.
These will be embedded (MUXED) and fed into a DSR-1500. This is a recorder which we can use to record a high quality copy of the show. It also has a 1394 Firewire output which can handle converting the muxed video and audio in real time and send them both to a MAC running a programme called WireCast. This programme has been written to handle streaming video across IP. It can apparently also handle the supposed HD formats. It uses Quicktime as a means of embedding a "hinted" video stream into a website.
UPDATE. The SDI Video and AES audio went into a DSR-1500 and was recorded onto tape. It was also output to Narrowstep as this could handle the muxed output and would achieve the same results as wirecast.
I need to speak with ICT about booking some time on the Ravensbourne website so that the programme can be broadcast on this site.
I never had time to speak with ICT but the programme was recorded and should now be in editing stages. It was also ingested into a server in the college building.
The show went really well for the timescale. I spoke with the vision mixer who worked on the original knightmare and apparently it took one week to shoot a whole episode. This was because of many technical issues between racking and graphics and the fact that there were kids which could have added to the time.
We fortunately had few setbacks although the transmission time did get pushed back serveral times. This ofcourse is unnacceptable in a live programme environment which is what we should have kept to. We used actors for the contestants and this helped much with the time. We also didnt have as many technical issues. We did have issues with mixing between delayed and undelayed sound which gave an echoing effect. The delay needed to be in place because one of the cameras was input into viz and this took processing time.
A way around this would be to DA the camera output and put a delay on one of the DA outputs. This would mean that all shots would have been in time and no undelayed audio would need to be used.
We also had issues with team members, there werent enough of us to cover all job roles and if we had found a crew we could have been more ambitious with the shots. The final programme was entirely locked off shots. We could have also had a second viz animator for the live showing and achieved more effects. 2 animators were used in the making of animations and effects but only one was used for the show.
The script was entirely cheesy but it played well as there was a comedic aspect to it.
There was no clear person who was production manager and so we all took on responsibilities that some could not manage. If we had a production manager from the start who could keep a clear view of the production ahead and communicate it across effectively we could have had a much more proffessional show. We had issues with learning viz at first but after throwing ourselves at the software we managed to piece some bits together and came to understand how the filing system works as well as troubleshooting problems.
We could have had many more job roles and responsibilities to make the show look and work better. I,e a lighting director and racking op, a few sound effects on disc for extra effects,
the presentation didnt go very well as people were speaking over each other and not being very clear on what they wanted to say. we also didnt critically evaluate the learning cycle and needed some structure to the presentation. nothing was received in terms of a powerpoint presentation which was the responsibility of certain team members who hadnt really done much in the way of work to contribute to the project and two of the team members didnt show for the presentation. I was dissapointed at this as the event was a team effort and didnt just simply finish when the programme was finished. This is the same mentality which happens in the broadcast industry and is not one which leaves good feeling amongst those who tried hard.
even if there was a production manager for the production and presentation i dont think this would have solved the problem it was up to the team to tell others that they hadnt pulled their weight which happened. its just some people didnt listen.
Sunday, 27 September 2009
int main() { printf("Hello, World!"); return 0; }
Hello, World!
This is my blog. All research into the 360ยบ program with links which will be posted on here in due course as the unit progresses. My input into the research side is for the technology behind the business card idea. I have been looking at OLED technology and how it could be implemented into the business card. I have found a supplier on ebay of quite cheap and good sized AMOLED (Active-Matrix oled) screens which are also touchscreen.
Ideas for circuits have been floating around and I have thought about using electrically conductive paint for tracks instead of wires. The idea to use tracks is one that is used in the design of PCB's (printed circuit boards) but for a prototype it would be too expensive to have one made. This is where the paint could be applied carefully. This saves weight and gets rid of wires which would clutter up the design. I am currently researching into how this technique could be used instead of a coil of wire for RFID.
As for the wireless charging of the card, I havent really looked into it yet but using the same coil of wire idea for the RFID could save space and would revert to charging when the card is off via an induction idea.
Some bullet points for what I have found out about,
Other companies that have had a similiar idea are the producers of rCard which is just a screen with a micro USB port on. It doesnt incorporate the use of a Micro SD slot, RFID, or wireless charging. Also the website is down and it appeared that they were merely a printing company like vistaprint.
The company my group and I are working on offers a service as the USP not just the card. All aspects of the service, Website with users own space, card which forwards a link to the users own space, cv and showreel will need to be proven to be able to work atleast in order for the USP to be strong.
EDIT
I have been in contact with farnell who have recommended a nice sized amoled and a means of using a MicroSD slot.
I have been researching texas instruments who offer free samples of their products. I have found system-on-a-chip as a means of having an integrated system rather than lots of chips. The main one I recommend for this project has USB as its control interface between other devices. It also has a ZIGBEE 802.1 wireless transceiver, built in flash for programming and flash for storage. It is however extremely small. This is good for temperature issues but bad for assembly issues as it is probably too small for me to work with. I know that you can submit final project assembly specs to them so they can build it with their robots.
I have decided it would be simpler to have two coils, one for charging and one for wifi. the charging one can be inside the top part of the card and the wifi can be sandwiched between the screen and a back panel
over heating issues have been resolved as the chip being used is incredibly small and a small heat sink could be applied ii necessary. also the operation of the device will not be for extended periods of time.
The presentation was a shambles. everyone was talking over each other, it wasnt clear what was being said and we went well over the allocated time. this could have perhaps been because we were such a large group and all had done a lot of work. still the presentation needed a structure and much info was lost out on as many questions were flying back which we had answered in the presentation but were lost along the way. also it was made apparent that the idea was too broad even though it was supposed to be a 360 idea which is broad in definition.
This is my blog. All research into the 360ยบ program with links which will be posted on here in due course as the unit progresses. My input into the research side is for the technology behind the business card idea. I have been looking at OLED technology and how it could be implemented into the business card. I have found a supplier on ebay of quite cheap and good sized AMOLED (Active-Matrix oled) screens which are also touchscreen.
Ideas for circuits have been floating around and I have thought about using electrically conductive paint for tracks instead of wires. The idea to use tracks is one that is used in the design of PCB's (printed circuit boards) but for a prototype it would be too expensive to have one made. This is where the paint could be applied carefully. This saves weight and gets rid of wires which would clutter up the design. I am currently researching into how this technique could be used instead of a coil of wire for RFID.
As for the wireless charging of the card, I havent really looked into it yet but using the same coil of wire idea for the RFID could save space and would revert to charging when the card is off via an induction idea.
Some bullet points for what I have found out about,
- The screen, which is a touchscreen OLED which measures smaller than a business card so that information can be put on the actual card itself. It is 1.3mm thick and very good with power consumption and the quality of video.
- The controller iC for the display itself, I have found one which could drive the video and is thin enough to go on the back of the card.
- Conductive paint to get rid of wires and improve on the overall look.
- Battery (power needed)
- Micro SD slot (whether it is possible to have one of these included for ease of use) The slot could offer the chance of playing a small resolution video on the business card but when forwarding the showreel to a potential employer or client it could forward a higher resolution version which is on the microSD card so that the client can view it in better quality on a larger screen back at the office.
- Whether the RFID coil can also be used for wireless charging
Other companies that have had a similiar idea are the producers of rCard which is just a screen with a micro USB port on. It doesnt incorporate the use of a Micro SD slot, RFID, or wireless charging. Also the website is down and it appeared that they were merely a printing company like vistaprint.
The company my group and I are working on offers a service as the USP not just the card. All aspects of the service, Website with users own space, card which forwards a link to the users own space, cv and showreel will need to be proven to be able to work atleast in order for the USP to be strong.
EDIT
I have been in contact with farnell who have recommended a nice sized amoled and a means of using a MicroSD slot.
I have been researching texas instruments who offer free samples of their products. I have found system-on-a-chip as a means of having an integrated system rather than lots of chips. The main one I recommend for this project has USB as its control interface between other devices. It also has a ZIGBEE 802.1 wireless transceiver, built in flash for programming and flash for storage. It is however extremely small. This is good for temperature issues but bad for assembly issues as it is probably too small for me to work with. I know that you can submit final project assembly specs to them so they can build it with their robots.
I have decided it would be simpler to have two coils, one for charging and one for wifi. the charging one can be inside the top part of the card and the wifi can be sandwiched between the screen and a back panel
over heating issues have been resolved as the chip being used is incredibly small and a small heat sink could be applied ii necessary. also the operation of the device will not be for extended periods of time.
The presentation was a shambles. everyone was talking over each other, it wasnt clear what was being said and we went well over the allocated time. this could have perhaps been because we were such a large group and all had done a lot of work. still the presentation needed a structure and much info was lost out on as many questions were flying back which we had answered in the presentation but were lost along the way. also it was made apparent that the idea was too broad even though it was supposed to be a 360 idea which is broad in definition.
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