 | | RCX infra red sensitivity —Eric Wijnsouw
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| | | Hello everybody, One of my RCX units is far less sesitive to recieve a IR signal from another RCX than the other ones. Can this be adjusted in some way? Thanks, Eric. (18 years ago, 16-Jul-06, to lugnet.robotics)
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| | | | | Re: RCX infra red sensitivity —Danny Staple
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| | | | | (...) I think you can adjust the transmit value from the software, but not the reception sensitivity as far as I know. IR sensitivity can be affected by battery performance, ambient lighting (though not likely a factor if others are responding (...) (18 years ago, 17-Jul-06, to lugnet.robotics)
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| | | | | | | Re: RCX infra red sensitivity —Brian Davis
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| | | | | | (...) I'm guessing one of your RCX units is a 1.0, while the other is a 1.5 (labeled 1.0, but without the power port) or 2.0? There are a very few hardware difference betwen RCX versions, but this is one of them. See: (URL) I think you can adjust (...) (18 years ago, 17-Jul-06, to lugnet.robotics)
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| | | | | Re: RCX infra red sensitivity —Eric Wijnsouw
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| | | | (...) Thanks for your replies. Both are RCX2 and I use the Robolab software. In Administrator / RCX settings you can set the RCX IR-power setting to high or low, but both were already in high. After some testing I found out that the main problem are (...) (18 years ago, 20-Jul-06, to lugnet.robotics)
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| | | | | | Re: RCX infra red sensitivity —Danny Staple
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| | | | (...) Depending on the kind of rechargeables you are using, they generally have significantly different characteristics. They also often output a slightly lower voltage (about 1.2 or 1.3v per cell as opposed to the expected 1.5). If you have a (...) (18 years ago, 20-Jul-06, to lugnet.robotics)
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| | | | | | Re: RCX infra red sensitivity —Philippe Hurbain
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| | | | Hi Danny, (...) Have you seen real failures using some rechargeables batteries? I believe that the RCX motor driver IC is really foolproof, and I don't think anything could be destroyed using various kind of batteries (provided that the 9 or 10 (...) (18 years ago, 21-Jul-06, to lugnet.robotics)
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| | | | | | Re: RCX infra red sensitivity —Danny Staple
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| | | | (...) I have not seen them on the RCX, but I have on other devices, where power transisotrs have died. Its all to do (I think) with the characteristics under load, and the fact that larger spikes in current may occur with rechargeables. If the IC (...) (18 years ago, 21-Jul-06, to lugnet.robotics)
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| | | | | | Re: RCX infra red sensitivity —Philippe Hurbain
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| | | | (...) Yes, the driver IC is current-limited to about 500mA (and thermal limited too), so it is very hard to destroy! (...) I have used NiMH batteries a lot on RCX, the only adverse effect I noticed is that the power available on motors is nearly (...) (18 years ago, 21-Jul-06, to lugnet.robotics)
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