Tagged Questions

0
votes
2answers
58 views

Precision with a continous servo motor

Ok, here's my problem: I need to create a needle that can rotate continously in both directions and an infinite amount of "loops". I guess the ideal is to use a servomotor, isn't it? I couls use ...
0
votes
2answers
277 views

continuous servo position control

with a continuous rotation servo i can control the direction and the speed of the servo , but i need to control the position too , i know it's not possible directly due to lake of feedback control in ...
2
votes
2answers
416 views

Need opinions on servo motor control for heavy applications

I want to control a servo motor using Arduino and sensors. But all the example schemes or tutorials so far I found are for motors used in toys, low power applications. My task is to control a servo ...
1
vote
2answers
245 views

Continuously Measure 3-Phase Motor Current

What methods are there for continuously monitoring the current in a 3-phase servo motor for a CNC machine and giving an alarm when the current is less than some value?
-1
votes
3answers
1k views

Control hacked servo motor speed using L293D and PWM

I've got a L293D and I've got a PIC16F877A outputting PWM. It's not real PWM, just using Timer0 to turn on a pin for 2ms and off for 18ms, bringing a total of 20ms period. I got VSS, VC, CHIP 1 ...
1
vote
2answers
532 views

Need oscillating servo/stepper motor guidance

EDIT: Additional Information below original post... Looking for a 360 degree servo motor that has adjustable control for timing of steps (or at the least timing per full oscillation) and can support ...
1
vote
2answers
405 views

Powering a Servo: Do I need a separate power source?

I have a project that utilizes two strong digital, coreless servo motors. Whenever I use DC motors, I usually need to have separate power sources for both the microcontroller and the motors (due to ...
1
vote
2answers
519 views

AVR Assembly with Servo/Motors/Etc

So I've been learning AVR assembly in my own time, I rather like it and I understand registers/counters and such. But the problem is...most of the websites I read online/tutorials don't really talk ...
2
votes
2answers
1k views

Two Wire Servo in RC Car?

I took apart an RC car recently and found 2 sets of motors. The rear wheels (left) seem to run off an electric DC motor which is understandable. The front wheels (right) I expected to be controlled ...
5
votes
5answers
5k views

Computer controlled water valve

I'm working on a computer-controlled indoor waterfall. One of the requirements is to be able to change the water pressure via computer interface. I've googled all day long and can't seem to find a ...
8
votes
2answers
2k views

Continuous rotation 'servo' vs DC motor

Under what circumstances should I prefer a continuous rotation 'servo' to a DC motor, or vice versa? It seems to me that to use a DC motor, I'm going to need three pins from an MCU -- two for ...
7
votes
5answers
419 views

Good motor supplier?

I'm looking to start a few different projects and stock up on some basic components - I was just wondering if anyone knows a good supplier of DC motors, stepper motors and servos? I'm in vicinity of ...
7
votes
5answers
826 views

Synchronise multiple Mega boards to run multiple servo motors

My friend Jules asks: The aim is to get as many servo motor controls as possible - looks like the maximum an Arduino will output is 14? Digital I/O Pins54 (of which 14 provide PWM output) ...
15
votes
10answers
3k views

I'd like to learn how to make my own USB gadgets

I've been writing Linux character device drivers for other people's stuff for some time. I'd like to find a new hobby and the thought of making my own USB gizmos seems really neat. I would be ...