 | | use of op amp circuits with the Handy Board
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Does anyone know how to get a negative 5 volts from the Handy board for an op amp amplifier circuit or set equations to figure out the gain of an standard op amp as the 741 or LM339 using Vee as ground and Vcc as +5 VDC? The equations only seem to (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | Umsubscribe
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Please unsubscribe me from the mailing list. (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Turning IR xmitter on and off
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Hi all, I've had a few questions on this. The ir_xmit_on and ir_xmit_off routines that I use are in hb_ir.c. You could easilly write them yourself - ir_xmit_on just does poke(0x1000, 0x40) and ir_xmit_off does poke(0x1000, 0). Note that in hb_ir.c (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | sonar,radar
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Hello, I am building a robot with the handyboard at school with my lab parteners. you have seen them on the list before. Jim T., and Richard Vannoy. Our robot is doing fine with the IR's and bumpers. We have the handyboard software for sonar, but do (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motor Speeds
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(...) When I built the PWM controller out of a PIC I gave it 100 speeds representing 0 - 100% width. So a speed of 50 is a 50% duty cycle signaal. The disadvantage of the Handiboard scheme is granularity. In particular I have found that for really (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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