Alt-BEAM Archive
Message #03107
To: richfile@rconnect.com.dennlill@buffnet.net
From: Wouter Brok w.j.m.brok@stud.tue.nl
Date: Sun, 09 May 1999 08:18:31 +0200
Subject: [alt-beam] Re: Analog driver signals from uCore And Uni-motor locomotion.
Hello,
>Dennison, Look at My web page and check out the PCB for Walkman Jr.
>You'll see that Walkman Jr. has it's microcore and drivers setup much
>like you describe! The drivers were mistakenly attached to the inputs of
>the Nvs, and it works. I never found out it was even wired wrong for
>over a quarter year!!! (:
But that doesn't make much of a difference: the H-bridge you use had
74hc14-inputs, do basicly the signal is made digital right away. Maybe the
pulse-duration is a bit changed because the 'extra' inverterinput draws a
little current from inbetween the resistor and the capacitor of the
Nv-neuron and your motor turns the other way around as it would in the way
it is 'normally' connected, but for the rest I don't think there is a
difference.
>Dennison wrote:
>> cap. I realize you can't exactly drive stuff directly, but It would seem
>> possible to develop some sort of perhaps an amplifying type transistor
>> H-bridge or something do drive useing this part.
I thought for a second about something like a
voltage-driven-PWM-oscillator, which can be connected to the analog part of
the Nv-neuron and thus regulating the power to the motor via this
PWM-oscillator, but that isn't quite it either, is it?
If it is possible to make a voltage-controlled-current-source-H-bridge then
we have what we want. The voltage-controlled-current-source shouldn't pose
a problem, but making a h-bridge out of it ....
Wouter Brok.
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