 | | Re: line following
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(...) As have I, so when I wanted to build a line-follower, I used a couple of IR detectors in concert with a pair of IR emitting diodes. They were arranged on the nose of the robot as follows: 1 2 3 4 \ | | / Where 1&4 are the IR emitters and 2&3 (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | variables
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Can you access variables declared in a binary progam from a different binay program? i.e. can "speeda" (pcode.asm) be accessed by xxxxxx.asm? Do you have to know the actual address where "speeda" is stored or can you just use "speeda" inside (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Battery life
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To avoid that battery problem, I have mine plugged in about 20 hrs/day and the other 4 hrs the serial interface is plugged in. I've had problems in the past where I've presented a robot that couldn't work because the batteries died & there were no (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: line following
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(...) <snip> (...) <snip> In my rather limited experience with reflective photosensors, I've found that black on white is not always the best of choices -- the white can come up as different numbers depending on how clean/dirty the floor is and the (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Battery life
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The best answer would be to take the mAH of the battery, say X=1500 mAH. Find out the current drawn by the RAM say I=5mA. Divide X by I and you get the number of hours of battery life. This is ofcourse assuming that you have a fully charged battery (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Battery life
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rabbit> 3600 since there are that many seconds in an hour. I myself rabbit> have left the handyboard off for periods of 4weeks or more rabbit> and still have had my memory. I just rattled the above off rabbit> the top of my head so, anyone, please (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Battery life
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Ive got a pretty crappy answer for you but its the best I can offer; check out how much current the RAM draws from a data sheet and calculate the power it uses (P = IV, where I=RAM current, and V=5v). Divide the mWHr your battery delivers by the (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: line following
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(...) I did something like this in an early computer engineering course. The requirements are exactly the same ie. follow a black line. What Chris said is a good start but you should also consider the case when the turn is too sharp; In this case (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Battery life
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Same question here. I left mine turned off for one night and the next day the battery had almost completely run down! jm (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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| | Battery life
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I think I already posted this question some time ago but never got an answer. Is it normal to have the HB run out of battery even when is not being used ?? I know the battery is always working to keep the RAM from erasing, but I'm wondering how long (...) (27 years ago, 16-Apr-97, to lugnet.robotics.handyboard)
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