 | | Re: single motor pneumatic pump and switch
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I think the key is that the differential has a lot less resisitance than the white slip gear. Your idea would work, but if I understand you, the slip gear would be slipping the whole time the pump is pumping, meaning the motor has to overcome the (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Re: single motor pneumatic pump and switch
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Does this mechanism actually need the differential? If you used a 24 tooth crown (the horrible bendy one) on the motor and this turned the white slip gear for the switch and also a standard 24 tooth for the pump, the diff isn't needed, or is it just (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Re: Announce: October NRB Meeting
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(...) Wish I could come, but we have a Legofest planned for The Construction Site at 3 - that would be too much driving. Regrets, -Tim (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Re: single motor pneumatic pump and switch
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Yes we do... but that's why we play with LEGO(R) too : ) "John Barnes" <lego-robotics@crynwr.com> wrote in message news:4.2.0.58.200010...lserver... (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | Announce: October NRB Meeting
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When: October 28th @ 1:00PM Where Nashua Public Library, Nashua, NH Directions and Info see: (URL) - Bylaws (see attachment) - Trinity Fire Fighting Robot Contest Qualifying contest in Jan. Presentation: - Skye Sweeney will be presenting "Micro Air (...) (25 years ago, 24-Oct-00, to lugnet.robotics)
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| | FLL/Robotics play opportunity at LEGOLAND (Volcanic Panic activity)
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Dear robotics fans, LEGO enthusiasts and LEGOLAND passholders: On Dec. 2nd, 2001, LEGOLAND California will host a FIRST LEGO League statewide robotics tournament. Using LEGO MINDSTORMS robotic creations, 30 different teams (...) (25 years ago, 24-Oct-00, to lugnet.legoland.california, lugnet.robotics, lugnet.robotics.events, lugnet.announce) !
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| | Re: Rechargable batteries
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My first two sets ran very hot and did not last long. I replaced them recently with Ray-O-Vac "Rechargeables" (no longer called Renewals) and, using the very same model PS1 charger they work well. Perhaps they fixed something. I think the point is, (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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I traced the circuitry of the tower the other day 'cos I wanted to build one of my own to work correctly with the spirit.icx. It is not a very complicated piece of electronics and I didn't find anything in there that wouldn't tolerate an external 9 (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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I have also used the Ray-O-Vac Renewals in the RCX. Unfortunately, I have not had good luck with them. They seem to work fine in the RCX, but recharging them (in the Ray-O-Vac charger specially intended for the Renewals, model PS1) invariably causes (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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(...) Do you mean electronically or physically? As long as your power is 9volts DC with the correct polarity it should be fine. Physically you may need to use gator clips to hold it in. I've heard the 2.0's will come with USB versions and since USB (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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(...) a (...) Guido (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | (canceled)
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| | Re: Mindstorms Mall Tour Pics
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Wow, this went to the wrong group! I dunno why. Trying again... "Tim Courtney" <tim@zacktron.com> wrote in message news:G2vy53.L99@lugnet.com... (...) (25 years ago, 23-Oct-00, to lugnet.general, lugnet.starwars, lugnet.robotics, lugnet.loc.us.ma)
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| | RE: single motor pneumatic pump and switch
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A truely ingenious little mechanism. I wonder if mechanical engineers in the real world ever get jealous of how easy it is for us Lego world engineers to do such rapid prototyping. ... and in reply to Ralph's comment, who was the famous figure who (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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I use Ray-O-Vac Rechargeable Alkaline batteries and their special charger in my RCX with great results. I only seem to recharge them every few weeks and then they have lots left in them. The charger seems to charge each (of 4) individually, the (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | RE: single motor pneumatic pump and switch
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(...) we thought it was all done already! Nice work. Cheers, Ralph Hempel - P.Eng ---...--- The train stops at the train station, The bus stops at the bus station, So why am I sitting at a work station? ---...--- Reply to: rhempel at bmts dot com (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | single motor pneumatic pump and switch
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Pneumatic pump and switch using a single motor: Do you need pneumatics on your robot? You want to produce the pressure and you want to switch the valve by motors. With my idea you can do both with a single motor. Have a look at: (URL) for my bad (...) (25 years ago, 23-Oct-00, to lugnet.robotics, lugnet.announce)
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| | MacNQC 2.2a3 compatibility with NQC2.2r2
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I am now using MacNQC 2.2a3. It seems it cannot understand some new syntax than can be used in NQC 2.2r2. (Such as EVENT()...) Can anyone teach me what should I do? Camus Lai (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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(...) If your using the Tower a lot of the time, (Polling etc.) I'd suggest getting a power adapter for 9 volts and use that instead. Saves on power greatly. Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 23-Oct-00, to lugnet.robotics)
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| | Re: Rechargable batteries
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I had a similar problem with the RCX. I use the RCX and it works well with 1,2V NiCd batteries as soon as the tower uses a regular 9V battery. If I use a rechargable 9V battery I have a problem similar to yours. Try using a regular 9V battery and (...) (25 years ago, 23-Oct-00, to lugnet.robotics)
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