Please forgive the stupid question but I have looked everywhere for docs on this. I understand that supplying 0-5V to the inputs will make the servos turn. But...
Hi Brett, I4 - doesn't exist - it's only present on the diagram in the doc. That is an error on our part. R - is the input to control the rate of servo...
Helps tons. Thanks david. Since the blocks are being discontinued I suppose there really isn't much point in making a better docs page. If there is i don't...
Ok one more question. When hooking the block up to the intro module do you use the digital outs or the PWM outs? Does the voltage effect the speed of the servo...
You can use the two PWM's to control servos, or one PWM to control a servo and another to control the servo rate. The jumper connects the trimpot to the R...
Hi all, I had a few questions about controlling the stepper block through the PWM and/or digital outs. It is related to the servo block input question. I...
Hey Mat, I think you're good to go with one Intro Module. Use a PWM through low pass filter for each. You'll send duty cycles to the PWM's to get them to ...
Outside of the modules and motors, what do I need to buy to make a low-pass filter? More specifically, how to I create one with a 10K resistor and the 10uf...
So this is where my lack of electronics experience kicks in. On a capacitor does the voltage it is rated for effect anything. For example can I use a 10uf...
The voltage rating of the capacitor must be higher than the any voltage the capacitor will have across it. In the Teleo PWM outputs, the highest voltage will...
Don Day
don@...
Aug 8, 2006 6:48 pm
1218
Thanks Don. They are electrolytic and i probably would have fried it if you didn't mention that. I feel a bit under experienced. Brett ... voltage the...
Hi Brett, I¹m pretty inexperienced with electronics too but I¹ve discovered some sites with a lot of useful and easy to follow info which might help you: ...
http://picasaweb.google.com/mathew.crane/LowPassFilter1/photo#4961720937273884690 Both lights are going... power to both the module and the block. I tested the...
I have created the low pass filter and it seems to work. Hooking up the circuit is throwing me for a loop. All of the diagrams show V+ connecting to the PWM. I...
I'm having a very similar problem with the stepper block (see the last message posted). I posted a picture of my setup - in that folder is another picture of...
Hello Mat, I have the block being powered ok. The servo block takes 4 inputs from 0 to 5V that control the position of the servo. It is my understanding that...
To answer your question: No, not yet. That's probably why. What you described makes sense, I just don't understand why I don't get any voltage coming out of...
Now this is where my understanding of the PWM fails. When i hookup the multimeter to the PWM and a ground I get nothing. When i hook up the 5V to the PWM i get...
Ok.. I'm in Make Controller Land (which has a different switch) and I forgot a component! Very sorry! You will need a resistor to pull the PWM up to 5+ when...
The PWM is not a symmetrical output. Its output impedance when low (FET switch to Ground ON) is less than an ohm. Its output impedance when high is the value...
Don Day
don@...
Aug 10, 2006 9:36 pm
1228
I will give that a shot and let you know. Thanks for the info David. Brett ... I forgot ... up to 5+ ... against ... say). Now ... capacitor to ... voltage ...
Hmmm... nope don't get it. Sorry for being slow. I appreciate the help and would love more but understand if you are getting sick of answering. To make it...
And just so I am clear. With this setup I should be able to control the voltage to the servo block with a complete working setup. Not just give it a +5V...
Questions Regarding Servo/Stepper Block Confusion: 1.) Should it be a smooth ramp up to 5V?. For example, 0 in max would be 0 from the PWM, 100 in max would...
I've wired up my stepper and can get it turning with the trimpot. I tried hooking up the PWM through the lowpass filter and adjusting the duty cycles in...
sorry i missed the first pat of this thred but why dont u somthing else. Like a h bridge to control the motor with a pot? If you use a good pot then thing are...
I have tried this just to see how things work and it works great. But my goal is to have a servo hooked up to the PWM so that I can control the servo...
Ok so I got the circuit working. Thanks to David and Don, your help is greatly appreciated. [low pass filter for servo input diagram] Now here is my question....
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