I have built a miniature walking bot, the legs are compromised of 4 servos that control the movement, this has all been programmed into a PIC chip.
The robot itself walks nicely. but now I want to get a radio for it so I can control it remotely, I haven’t had much experience with radios so my question is how do I wire it up so that when I push the forward button on the radio it walks forward and when I push back it walks back?
Joined: 31 May 2004
Posts: 3160
Location: Melbourne, Australia
If you already have the PIC micro sequencing the motors, the RC stuff should be simple.
If you want to use standard Hobby RC Gear, just hook up a PIC input to the servo-signal wire from a hobby receiver, and use a "pulse-in" type command (interrupt driven timers if you want to get fancy) to measure the pulse width coming from the receiver.
1500us = Center, 1000us=left/back, 2000us = right/forward (depending on which channel you are receiving).
From there it should be easy for someone who already has the bot walking .. _________________ Great minds discuss ideas. Average minds discuss events. Small minds discuss people
Sun Jan 01, 2006 4:57 pm
bobthebotbuilder
Joined: 01 Jan 2006
Posts: 2
PIC Chips and Radios
I was thinking of using the Futaba 9CHP Super, I have one from a past project I built.
Sun Jan 01, 2006 5:43 pm
Shaunington III
Joined: 18 Jan 2006
Posts: 96
Ok, this is off the last question, but how do i control a neumatic servo with a r/c car controller with only up, down, left and right?
Sat Jan 21, 2006 3:18 pm
Philip Experienced Roboteer
Joined: 18 Jun 2004
Posts: 3842
Location: Queensland near Brisbane
Up in the top right of the screen you will find a "search" button. You will be able to find many questions have already been answered.
Does the RC unit have a spare chanel to control the pneumatics? You need ne chanel for forwards and reverse and another for left and right. You could use a servo to depress a poppet valve which would open a small amount of air. You could also use a servo to activate a micro switch. The switch would turn on a solenoid valve.
I use the RC signal to switch a RC relay which sends electricity to a solenoid valve. http://www.electronize.co.uk/model_electronics_frames.htm The valve feeds CO2 into a ram. _________________ So even the rain that falls isn't actually going to fill our dams and our river systems
Sat Jan 21, 2006 4:18 pm
Shaunington III
Joined: 18 Jan 2006
Posts: 96
Thanks, that a massive help =)
Sat Jan 21, 2006 8:48 pm
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