 | | P.W.M into something usefull....?
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Hi all you to all you guys in the HB world!, Found a old RC system for a air plane. Works fine with the 1 servo it had left, my question is how would one go about useing it with the HB? hooked one of the outputs to a analog port and got the P.W.M. (...) (25 years ago, 4-Mar-00, to lugnet.robotics.handyboard)
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| | new lock_process() function library for IC
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I have written some library code which allows user programs to effectively hog_processor() for a user-specified time interval, instead of the 256 msec allowed by hog_processor(). The new functions are: void lock_process(float seconds) ;locks out (...) (25 years ago, 3-Mar-00, to lugnet.robotics.handyboard)
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| | Re: servo motors
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Hi, Try adding some delay time between turning the servo on and off. For example, 'sleep(2.0);'. Add the sleep(2.0) as follows: (...) sleep(2.0); /* wait for 2 seconds for servo to move */ (...) sleep(2.0); /* wait */ (...) Probably the reason why (...) (25 years ago, 2-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Converting voltage to resistance
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Voltage and resistance have no relation to each other - they are two different things. The HB analog inputs convert the voltage level applied to them to a digital equivalent, basically an A/D converter. So, you can apply your 0 - 5 volt signal (...) (25 years ago, 2-Mar-00, to lugnet.robotics.handyboard)
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| | RE: servo motors
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(...) Yes you are right, i just figured out too. i have to give at least 0.3secs for the servo to move to the required position. (...) actually the servo doesn't move when you turn it off. if you don't turn it off some small movements are observed. (...) (25 years ago, 2-Mar-00, to lugnet.robotics.handyboard)
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| | Re: servo motors
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(...) What is it supposed to be doing? When you say _it_ doesn't work, what exactly is not working? I'm not that familiar with the routines but it looks like you're shutting off the servos before they can move. I also believe once you turn off the (...) (25 years ago, 2-Mar-00, to lugnet.robotics.handyboard)
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| | Converting voltage to resistance
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This is a dumb electrical question. I am a programmer, and I still struggle with the electrical aspects of this hobby. How do I convert voltage output to resistance. I have an application that turns out 0 to +5 volts. However, as I read the (...) (25 years ago, 2-Mar-00, to lugnet.robotics.handyboard)
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| | servo motors
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hi all i connected a servo to the digital 9 port, downloaded the servo.icb and servo.c files. from the command line i can control the servo. but then i wrote the following very simple code, and it doesnt work. can anyone spot the problem. void (...) (25 years ago, 2-Mar-00, to lugnet.robotics.handyboard)
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| | Re: Exp. board Servo
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(...) Fortunately there is a direct relationship between servo-value and angle. Try different angles (for example 0 / 45 / 90 / 135 / 180 degree) and draw the diagram value vs. angle (for example with MS Excel). You will (hopefully) see a linear (...) (25 years ago, 1-Mar-00, to lugnet.robotics.handyboard)
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| | RE: HB's mA consume?
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Well, you can _greatly_ increase the efficency of the handyboard if you remove the 7805 regulator and replace it with a PowerTrends switching regulator (Digikey sells these among others). I would suggest you run three wires from the regulator to the (...) (25 years ago, 1-Mar-00, to lugnet.robotics.handyboard)
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| | RE: HB's mA consume?
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Thanks your answer Will, well, seems not easy to give a good use to a solar panel in the HB If I want to connect the a panel to the HB charging circuit, it must be 12V/500mA like the AC adaptor? or with less current (maybe 200 mA) , it can still use (...) (25 years ago, 1-Mar-00, to lugnet.robotics.handyboard)
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| | Re: HB's mA consume?
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If your calculations are correct, and your solar panel provides 40 mA, and you get maybe 6 hours of strong, useful sunlight per day, then I figure you'd need eight solar panels and three battery packs, minimum, to keep the HB running all the time, (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | HB's mA consume?
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Hi, Today I have tested the time the HB can stay powered with his battery (just the board, without any other device attached), its work during aprox. 8 hs, so because the batteries I use are 600 mA, I believe that the consume of the board is around (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | Re: HB memory capacity
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As IC loads each file, it reports how many bytes each one occupies. Just add 'em up. The IC interpreter is said to occupy approximately half of the 32 kB available, so if your code gets up to about 16 kB total, then you need to worry about trying to (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | Re: Exp. board Servo
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(...) Well, since it seems these values often vary from servo to servo I usually set them by using the knob function and scaling it down so I can visually see the numbers I'm putting into it and the result on the servo; turning it until it chatters (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | Exp. board Servo
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Hi.. i have some questions about the exp. board and R/C servo, hope anyone can help me.. thanks.. From the "Expansion board software" homepage, it said that servo0=(value) is used to control the servo, may i ask how can i convert this value to (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | HB memory capacity
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Hi all, A funny thing happened. i tried to download a file. IC gave the message it was downloading, but just when it finishes it gives me an error saying "lost synch with board". then i unloaded some files and redownloaded the file again. this time (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | Re: KIPR Kit
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Joe, As it turned out, the edge of the pulley was right next to and perpendicular to a long beam piece. We just used hot glue to glue it to the beam and held it in place until the glue dried and had no trouble at all. The pulley can't come out of (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | Re: KIPR Kit
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(...) These are what I also have been trying to use to break the beam, they seem to be the best choice. My question was more about how you mounted the sensor. I'm curious to know what piece people had glued the sensor to, and to see if they used (...) (25 years ago, 29-Feb-00, to lugnet.robotics.handyboard)
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| | Re: Servo controllers
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(...) If you can burn PIC processors yourself, try my page at (URL) and bonk on the serial servo controller project. I have PIC12C508 code there that allows you to control 4 servos with a single 2400 baud connection. The code is set to allow a (...) (25 years ago, 28-Feb-00, to lugnet.robotics.handyboard)
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