| Issue 3: | Foot pedal | |
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Foot Pedal - we would be really grateful if you could ask Joe to get us a old foot pedal from the dentist department.
Aug 5, 2008
Project Member
#1
Jonathan...@googlemail.com
Aug 18, 2008
As the foot pedal is broken we will need to put our own electronics in it. We have changed the design of the boards which are comming from AliceDesignes so that we can interface the foot pedal as well as the drill position sensing arm with the computers.
Aug 18, 2008
I'll hook up a temporary solution using a games foot pedal for a racing simulation to control the speed of the drill as I believe once sound is added this will be much more important. It won't feel very realistic but it should be a useful stop gap.
Labels:
Milestone-September-2008
Nov 6, 2008
I now have one foot pedal I can collect from David Buckland. I'll give it to Ally on our meeting with Jon H.
Cc:
AllyBarrow w.s.har...@reading.ac.uk MJ....@kcl.ac.uk briantsedesign
Nov 21, 2008
Sent: 03 October 2008 12:48 Ally, would a pedal with just an on-off switch suit what we need? Many thanks, Jonathan Sent: 03 October 2008 18:29 That's not really our decision; we'll put together whatever's required. If controlling the speed of the drill isn't part of what the students need to learn then great, it's a little less work for us. Though if it's just an on/off switch I would question the value of a foot pedal at all. As far as I'm aware the advantage of the foot pedal other than speed control is safety, when you take you foot off, the drill stops. But to what extent is that a necessary part of the learning 'experience', would it matter if the drill was on all the time? Ally Sent: 06 October 2008 09:29 Dear Ally, The foot control will require speed control as well as an on/off function. Best wishes, Steve. Sent: 06 October 2008 11:24 Hello all, there appears to be some small but important, for us at least, discordance regarding foot pedal requirements. This is not the technical team's decision so we will need a consensus of opinion before proceeding. Please see replies below... In summary: • Clearly a foot pedal is required (Mark) • An on/off switch may be sufficient • Speed control is preferred and possibly necessary (Steve) • As far as implementation is concerned the computer interface for a foot pedal has already been taken care of so the limitation is acquiring the actual physical pedal. • It sounds like we have access to four foot pedals in the short term (David) • BUT it also sounds like achieving 20 uniform pedals will be difficult/costly (Jonathan) which was when the on/off question was raised. Actions: • Speed control NOT required: We can source cheap non dental related foot pedals. • Speed control IS required: We must either, find a source of cheap/used dental pedals (potentially costly), source non dental related pedals with variable input (less but probably still a bit pricey), make them ourselves (time consuming, definitely not ideal). It would be most useful if someone makes an executive decision. Thanks, Ally P.S. Jonathan, I have just 'replied all' to you original message, could you forward to anyone else who may want to comment? Sent: 06 October 2008 12:23 Dear All, As we are replicating the air turbine handpiece in the first instance, it would really only need an on/off function. Slow speed handpiece does need variable control. There are two handpieces on a conventional dental chair, are we replicating both now? Foot control adds realism and adds to teaching of safety for patient. Without a foot control we loose a lot of the realism and this would be a concern for me. It only needs an on/off function at present (in my opinion) and so a source of cheap foot switches could fairly easily be found. It would plug straight into the box and would be a necessary item for any commercial product. There is more to this whole process than hand feel! Regards. Mark Sent: 06 October 2008 13:10 Hi Jonathan I would have thought we should have a foot pedal which can regulate the speed of the drill (ie. will also dictate the noise output) as well as providing the on/off function. This is because dentists do control the speed via the footswitch. However, it is not essential, more a desired item. Hope this helps. Brian Sent: 06 October 2008 13:14 Dear Jonathan, I never saw this information regarding the need/use of foot pedals. My opinion is that a foot pedal with the ability to control the rotational speed is essential in restorative dentistry! Best wishes Brett. Sent: 06 October 2008 14:07 Hi, This is getting a bit messy. An obvious situation where a forum/wiki would be beneficial. There’s doesn’t seem a lot of point having these comments (below and Mark’s which I just forwarded to you) going to one or two people. I suggest leaving it for today and letting anyone else make their point. Unless someone steps up and makes a bottom line decision I’ll compile all the replies into one document and circulate one final time with the recommendation that: As it is straightforward and fairly cheap to make on/off foot switches we can always decide to ‘upgrade’ later. So initially we will have one proportional pedal and one digital switch for people to try. All effort to acquire proportional foot pedals should be made up to March/April next year. If that succeeds then great, we’ll implement proportional pedals, otherwise we will use digital pedals in bulk and reserve a single proportional pedal for the ‘high performance’ workstation. Ally Sent: 06 October 2008 14:42 Dear Jonathan, As I mentioned in the last PHANTOM meeting, I believe that speed control on the foot pedal is necessary. Whilst we go to so much trouble in getting the PHANTOM tooth to feel real, we should at least do the same for the drill speed which would differ in order to cut the two hard tissues, enamel and dentine, and in removing fillings and caries. AS Mark mentions safety is essential, so the drill can’t be always on! As Steve and I suggested, you could buy a foot pedal from on e of the dental companies if the ones supplied are only on/off. Best wishes Pat
Cc:
-AllyBarrow -w.s.har...@reading.ac.uk -MJ....@kcl.ac.uk -briantsedesign
Labels: -Milestone-September-2008 Milestone-December-2008
Dec 2, 2008
Pat tried the foot pedal. She noticed that the sound is 4 seconds delayed.
Owner:
AllyBarrow
Cc: briantsedesign P.A.Reyn...@kcl.ac.uk
Jun 25, 2009
How many have we got in total? There is two more awaiting collection.
Cc:
-P.A.Reyn...@kcl.ac.uk
Labels: -Type-Task -Priority-Medium -Milestone-December-2008 Type-PartsRequest Priority-Critical Milestone-August2009 |