A kind of motor with automatic feedback, such as a hobby RC servo.
2
votes
1answer
45 views
Raspberry Pi: driving Servo with PWM
I'm experimenting with a small servo motor with the raspberry pi using PWM (pulse-width modulation). My understanding is that the servo should respond to different length of pulse. I should be seeing ...
-2
votes
1answer
30 views
270-360 degree servo [closed]
Does anyone know of a servo that has a range of 270-360 degrees. I cant be a winch servo and it can have less than that range. Also torque/current draw is not terribly important as long as it is not ...
1
vote
0answers
63 views
How can I use arduino to control 4 motors speed and direction?
I consider this question different from others because of the variety of things I need this setup to be able to do.
Description:
I want to build a minimalistic motor controller capable of controlling ...
1
vote
1answer
45 views
Servo not working with Arduino
I've connected a servo(AS-18 acoms) to my arduino and I've uploaded the sweep example onto it. But nothing happens . Here's a pic.
I've connected the positive terminal of the servo to 5V on the ...
0
votes
1answer
72 views
creating a switch using arduino's digital outputs
I'm trying to charge a simple servo that only has + and - pins. Usually I would connect it's - pin to the ground and + pin to the digital output from Arduino. This works, but the servo turns weakly ...
2
votes
1answer
79 views
Servo position with no pulse
I am using a PIC 16F884 to run 2 motors and 2 servos. The motors are using the onboard PWM module, and I am bit banging PWM for the servos on Timer 2.
With only one servo being controlled, it ...
0
votes
0answers
41 views
Servo controlled by potentiometer using atmega328
I'm trying to control a servo using a potentiometer. I'm using an atmega328p with internal 1Mhz. The servo is on OCR1A and the potentiometer is on ADC0. I'm getting a 50Hz PWM on OCR1A but it ...
2
votes
1answer
73 views
Winch or regular servo
I am trying to build a robotic arm and for the base I need a servo with a lot of torque. After browsing through hobbyking's servo selections I noticed that winch servos offer a higher torque for ...
1
vote
2answers
115 views
Controlling a Servo with a TLC5940 (calculating PWM setting)
I'm trying to control a few servos and a bunch of RGB-LED from an arduino board. To do that I'm going to chain together a few TLC5940 chips. The issue I'm trying to resolve at the moment is what PWM ...
2
votes
2answers
94 views
Building Automated Cat Food Dispenser - Need Strong Servo for Worm Gear
I have a set up for an automated cat food dispenser where a servo turns a worm gear- which in turn drops the food. However, sometimes food gets stuck between the worm gear and the sides and the only ...
1
vote
1answer
129 views
Arduino Nano: This schematic would work?
If I used this 9v battery, and a 6v battery pack(AA battery), would this combination work.
I want to it run disconnected from the PC.
Sorry my bad english.
2
votes
2answers
229 views
Servo Controlled Potentiometer using Rotary Position Sensor
I need digitally controlled potentiometers but I want real pots and not a digital potentiometer chip because I want to integrate this with conventional relatively high voltage circuits like those you ...
3
votes
3answers
99 views
SSC-32, can I and how can i program it
A friend recently gave me this board that he had never used and didn't know anything about it. It had a USB to serial cable plugged into it with the driver software that I installed and it had a servo ...
0
votes
0answers
81 views
Working of ac servo drive in position control mode and algos for position control
I have started working with a Panasonic AC servo drive of capacity 400W (manual). While trying to understand how a ac servo works in position control mode. After experimenting I have come to the ...
0
votes
1answer
85 views
Best and safest supply for 12 standard servos or more?
I am building an hexapod 2DOF robot, and I had planned a Power supply (5V/5A) for all devices, like this :
Would that work and be safe?
I have another plan , to seperate the power between servos ...
4
votes
5answers
142 views
Choosing the type of battery for a project
I am working on a machine which consists of 10 servos, and one microcontroller. The servos need to be on pretty much all the time for about 8 minutes. I am planning on using the ATmega16 to provide ...
0
votes
1answer
60 views
RC AM senders/recievers: Changing the crystals, and using Servo PPM as a 1/0 switch
I am trying to use a 27mhz RC car controller to send to an RC Car AM reciever and use that output (short 1-1.5ms pulse of a few mA) to trigger a 5V relay, with the signal stabilised via a ...
0
votes
2answers
247 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 ...
5
votes
2answers
211 views
Limiting torque on a DC motor
I'm developing a small knob that can be controlled by both the user and a microcontroller. My current design is a modified servo. I'm removing most of the gearing to keep the motor's torque low. I'm ...
2
votes
3answers
221 views
Servo Current Draw When Moving
This may seem a very silly question, but does a servo draw more current when it's moving? I need to be able to log when a servo flips, and being able to log the current drawn from the battery pack ...
7
votes
2answers
255 views
Generating servo signal in atmega2560
I'm new to AtmelStudio. I need to know how to generate a servo control signal using timer modules of atmega2560. I'm using an Arduino Mega board. (please refer the last paragraphs of this page for ...
5
votes
3answers
456 views
Arduino uno - Servo
Im trying to control two servos at once using Arduino UNO and Arduino Motor Shield. My servos are modified, so that they can work with constant movement. When I send the first order ...
3
votes
1answer
193 views
Driving servos using microcontroller and current limiting
I am new to electronics and would like to design a PCB that uses an Atmel microcontroller, and powers three servos. I was thinking of designing the PCB with a single power supply.
The servos I have ...
0
votes
2answers
622 views
6 Volt Futaba Servo controlled by a 5V Arduino
I've been able to hook up a Futaba S3003 servo directly to my Arduino and it works perfectly. However, when I power it with an external 6 volt DC power supply (instead of the Arduino's onboard 5V) it ...
2
votes
1answer
577 views
Jumpy servo with arduino
I'm using the sparkfun inventor's kit. I'm using the code listed at the end fo this post, to controll a servo with a potientiometer using the arduino.
Unfortunately, the servo behaves very jumpy. ...
2
votes
2answers
380 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 ...
-2
votes
1answer
243 views
How to reduce the noise of a servo motor? [closed]
I am new to motors.
Additional to put the servo in a box to reduce the noise physically,
Any good suggestions?
Or other motor option?
Thanks
1
vote
1answer
960 views
How do I control speed using servo.h?
I have an Arduino mega 2560 attached to a 4 wheeled robot (similar to this: http://www.youtube.com/watch?v=gPqZQsKHJ9s&feature=related) .
Pin 9 on the Arduino is connected to the front wheels ...
1
vote
2answers
438 views
Properly controlling a 6V servo motor from a microcontroller?
Regular old 5V hobby servos can usually be safely connected directly to a microcontroller without any issues. When it comes to 6V servos (that also might be drawing sizable current), there doesn't ...
0
votes
2answers
204 views
Driving a dual axis with one stepper motor [closed]
I'm busy learning a bit of electronics, and trying to create an analog gauge replica of a Cessna 172 aircraft altimeter.
I'm using an Arduino Mega 2560 to fiddle with, and thinking of using a stepper ...
0
votes
1answer
262 views
Test ESC using a Servo Tester
I'm trying to test my 20A Hobbywing skywalker ESC.
For that I bought this servo tester from ebay
I'm a bit confused about the servo tester input. Shouldn't it be just supply power? Then what is ...
2
votes
1answer
451 views
What's the best approach to implementing a remote control lock?
I was thinking how I would go about building a remote control lock with an Arduino (or better yet a Raspberry Pi when I get one) and thought I'd check to see if any were available for sale. Schlage ...
2
votes
1answer
127 views
Leaving a RC servo motor idle for long term?
I've been searching for awhile and can't find an answer so hopefully someone here can help me :)
I just want to know if leaving a servo motor idle, powered but no input, is bad for it? I'm planning ...
0
votes
0answers
73 views
Problem with Dynamixel EX106 Servo [closed]
I'm using a few EX106 servo and recently I had a issue with firmware.
At the moment I can't detect/connect to the motor. when I power it
the LED stays on all the time. I imagine that's an alarm ...
5
votes
1answer
240 views
Servo vs. stepper for camera mount
I would like to make a camera mount where it can rotate automatically around the Z axis, and also make a variable angle against the ground plane.
The camera weighs about 500grams.
Is a servo ...
4
votes
2answers
151 views
Move servo relative to current position (analog)
I have 3 sensors that feed into a couple of comparators that determine whether to move the servo or not. I used to do the moving with a microcontroller but I need to free some pins badly so I'm trying ...
4
votes
1answer
370 views
Recording Servo/Motor movement with arduino
Hi I'm really new to Arduino projects and don't really know how to start. I'have to do a project for university. The programming part should be no problem but I don't have any experiance with ...
-1
votes
1answer
172 views
Servo selection Lightweight robot, 4 Legs, 3 joints per leg. [closed]
I'm building a robot for my major work at school and need to select servo motors for the legs.
The robot will have 4 legs and each leg will have 3 joints so 12 servos are needed.
My robot will be ...
2
votes
2answers
87 views
Playing back recorded movements with servos
I'm new to motors/servos so could do with a bit of advice. I'm currently working with 3 Dynamixel servos and it's cool that they can be programmed fairly easily and I can get the current position when ...
1
vote
2answers
217 views
Power supply from USB
I want to power some hobby servos from a USB 5V supply. I am daisy chaining 2 ports together from a powered hub so that I can draw up to 1A. Should I power the servos directly from this supply, or is ...
2
votes
1answer
192 views
can a servo board be used to drive a DC motor
Motor controller boards tend to be pricey, l298's a bit of hassle for the occasionally hobbyist, and both take up 2 IO pins per motor.
I've had the notion of hacking off the control pcb from inside ...
3
votes
2answers
790 views
DIY linear servo mechanism?
This might belong on the new Makers site, but it could be applicable here too.
I'd like to position a device on a 1 meter linear shaft to within 50 microns. I can currently, with steppers, get down ...
1
vote
2answers
229 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?
0
votes
2answers
598 views
My servo wont turn when accepting commands from an arduino
I'm trying to turn a servo with my arduino when it receives commands from a serial input, in this case my keyboard. I have already done this with motors and it works fine but when I try with my servo ...
1
vote
3answers
760 views
What do I need to drive a servo motor?
I'm using an Avr microcontroller and I've been wanting to build a simple robot, for some time now, from scratch.
In every robotics project I have seen, seem to have a separate board driving the ...
1
vote
1answer
358 views
Standalone Atmega328
I am animating a small toy using three HXT900 servos controlled by a standalone ATmega328p.
Space is very tight indeed!
I am considering using two li-ion or li-poly 3.7v (700mAh) cellphone batteries; ...
5
votes
2answers
405 views
Servo Motor Won't Turn Without Push
So, please forgive me for the naiveté I'm most certainly going to exhibit here. I'm mostly a software guy, so this project is a little out of my comfort zone. Nevertheless:
Project
I have been given ...
1
vote
1answer
113 views
how significant is the effect of high loads on servo accuracy?
After reading up on some questions posted here regarding servos, I decided to go with the Dynamixel AX-12A which can be found here
http://www.trossenrobotics.com/dynamixel-ax-12-robot-actuator.aspx.
...
3
votes
1answer
178 views
Weird Servo Speed Control problem
I am trying to control a servo motor using PIC 12F675. I was successful in driving the servo as well as achieving the speed control for the servo. Thanks for the help from Stack Exchange
Now, my ...
2
votes
2answers
851 views
Servo motor speed control with PIC
I am controlling a servo motor using the PIC12F675. The servo rotates in opposite directions.
I controlling the servo as follows:
...
