A kind of motor with automatic feedback, such as a hobby RC servo.

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Induction swashplate design reliable?

I "designed" or rather thought up a symmetrical drone design for easy deployment, it's a ball with contra-rotating blades inside that swing outwards when engaged. I wanted to avoid linkages so I ...
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0answers
49 views

TLC5947 How to use [on hold]

I have trouble understanding how to use the TLC5947 IC. I need to control 25 servos with it and I plan controlling it with a pic. I understand that it has internal counter that counts to a 4096 and ...
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2answers
39 views

Servo does not rotate to the absolute minimum position

I did a bit of Googlin' but I couldn't find anything about this. My hexapod uses analog servos (these ones) to move the legs around. I have the control line hooked up to a servo controller (which ...
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1answer
69 views

reduce from 12 to 7.5 volts and can carry 4 ampere

i have 2 servos operating at 7.5 which each of them consume 4 ampere at stall and i have battery 12 volts.i want to make a circuit, buy a circuit or even know if it i possible to make or buy ...
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2answers
110 views

Using a microcontroller+BLE (Bluetooth Low Energy) +Servo with one battery source

I am currently working on a project where I was looking for a microcontroller that is capable of BLE (Bluetooth Low Energy) which determines a servo's position. Using an Arduino the project works well ...
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1answer
60 views

Six Wire Servo with Arduino

I have a Tamagawa 200 step servo, 6.4V. I want to test it with my Arduino Uno. My only problem is that it has 6 wires (white, red, black, green, blue and yellow) and I can not find a simple way to ...
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1answer
21 views

Raspi Audio Problems When Using a Servo

So I am trying to make a raspberry pi control a servo but it also needs to have speakers attached. But whenever the servo is powered there is a horrible audio output through the speakers. This will ...
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1answer
24 views

Best way to simultaneously control two servos positioned horizontally and vertically?

I'm trying to set up a C program where a servo (servo1) sweeps to a position, waits a few seconds, moves to another position and repeats 4 more times. Another servo, positioned vertically, (servo2) is ...
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41 views

Controlling a servo motor on an LPC2103 microcontroller

I'm still a beginner on deep embedded systems development. I would like to know how to control a servo motor without using PWM, since I didn't actually learn anything about it on my classes and I'm ...
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25 views

AC servo motor PR position control mode

I have a delta A2 servo motor datasheet and I want to ask about the PR control mode, I know that there is some parameters related to the control of such mode (P6-00 ~ P7-xx) but how to command the ...
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1answer
64 views

Powering a Futaba S3003 servo

I'm working on a project and I need to use a Futaba S3003 servo, I'm about to buy a transformer that gives 6v, the thing I'm not sure about is the amperage. Is this transformer ok? I can choose 3V, ...
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2answers
47 views

24 VAC source unable to drive servo motor

Here's my power supply (schematic except without the transformer since my source is already at 24 V AC and using a 100 uF electrolytic as my smoothing capacitor): 24 VAC rectifier -> 100 uF smoothing ...
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2answers
128 views

Using a capacitor to properly power a servo

I recently attached a servo to my Arduino for the first time. I ended up needing a 470uF capacitor wired like this tutorial shows because my servo was freaking out and causing my laptop to throw ...
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1answer
74 views

Multimeter showing negative voltage on servo connection

I am trying too get my first (ever) servo sweeping back and forth and for some reason am having enormous difficulty with the wiring. In the Fritzing pic below, I have the circuit connected (both + ...
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1answer
31 views

How to bypass S-type connector for connecting a servo to an MCU/SoC

I have a TowerPro SG920 servo that I'd like to connect to an MCU/SoC (Pi or Arduino). However, the servo has an "S-type" connector (see pic above) and its 3 wires (red, black and orange) are ...
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1answer
36 views

How to determine servo signal encoding

I have a TowerPro SG90 servo which matches the "JR" brand wiring discussed here where the servo's 3 wires are as follows: Red is + Black is ...
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2answers
93 views

Sharing same battery with two dc motors and two servos

I have a 12v battery powering two DC motors through an Arduino and motor controller. The 12v battery is also powering the Arduino using the VIN pin. Now I am trying to hook up two servo motors from ...
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1answer
40 views

A6627SJP-T datasheet

i have this A6627 component in the printer. Looks like a current control circuit. Does anybody have a datasheet or at least knows the serial protocol this device uses? Thanks!!!
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1answer
61 views

Can a capacitor provide enough current to be used as a fail safe for a servo?

Here's my situation. I'm planning to use a servo (like the ones used in RC models) to rotate a chunk of lead between two positions: 0º and 180º. Since I'll probably be powering the servo from a wall ...
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1answer
120 views

PIC18F4520 failed using internal oscillator at 1MHz , please help thank you

I am wishing to use the internal oscillator of the pic18f4520 at a frequency of 1Mhz , what i wish to achieve in the end is to use to control a servo. ...
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1answer
23 views

Servo converting to continuous

i have 2 servos 7.2 volts,the rated current is 0.35 ampere and 3.5 ampere stall.i want to convert it to be continuous,so i will remove the potentiometer and put two resistors equal in value instead of ...
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2answers
39 views

Controlling servo torque

TL;DR : Can I control a servo's torque by PWM'ing a PWM ? I'm thinking about buying a dynamixel AX18 and I would like to be control it's output torque. If I modulate the input command, I expect the ...
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1answer
92 views

How many AA batteries for 10 servos and how long will they last? [closed]

I'm using 10 servos. I know I can't power them with my arduino, so I want to use AA batteries to power them. How many AA batteries do I need then and how long will they last?
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2answers
65 views

Is it possible to decrease the speed of a standard servo motor?

I have TowerPro SG-5010 and its speed is 0.17 sec/60° at 4.8V and 0.14 sec/60° at 6V. Just to be sure, is it possible to further decrease the rotation speed?
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2answers
88 views

Logic level conversion for servos

I'm trying to spy on the state of servo communications with a RC receiver and optionally change the output. Unfortunately my controller is 3.3v while the servo logic is ~5v. I'm trying to figure out ...
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0answers
15 views

Does the ability to program a servo imply that the Lock Bits were not set on a Atmega48?

I'm wondering is how this servo programming business works: The servo (HS7980) has an Atmega48 chip and uses a proprietary protocol for programming so it seems pretty likely they lock it to prevent ...
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1answer
54 views

Delay vs Quick Fuses for servos

I have read that delay fuses are ideal for electric elements that require an additional start-up current like electric motors. I am using several servos to drive a pretty heavy mechanical structure. ...
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2answers
91 views

Checking my understanding of how hobby servo motors operate?

Can someone tell me if my understanding is correct please. The control signal to a hobby servo motor that is connected to an arduino operates by : In every 1 s there are fifty windows each of length ...
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1answer
33 views

would this be safe to control servo with usb

i've been asking around and people has been telling me that the max current a usb can supply is 100 ma then 200 ma then 500ma then the http://en.wikipedia.org/wiki/USB says 0.5–0.9 A (general) 5 A ...
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1answer
43 views

Servo Motion Direction

I am trying to set up a servo controller that will automatically make the servo switch direction when it nears the end of its travel range. I designed a solution that uses a quad comparator and a ...
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1answer
80 views

High-current motor on isolated circuit causing servos to move

I have a robot with several servos controlled by an arduino. Also attached is an electric airsoft gun, which draws considerable current. The gun is on an independent circuit with a separate battery ...
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5answers
113 views

Staggering PWM waveforms for servos to minimize current spikes

If I'm controlling multiple hobby PWM servo motors, is there an advantage to staggering the pulses sent to each servo? By which I mean, each servo needs to see a pulse of width ~1ms every 20ms. Let's ...
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2answers
262 views

GPS in combination with servo on Arduino

Me and my friends are building a boat which needs to steer towards certain coordinates. We have a GPS and a compass on board. We have written code which calculates the direction that the boat has to ...
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1answer
69 views

motor movement as in and output

I am looking for a way to counteract an active servo or stepper motor. In more detail: I want to translate the movement of a controllable motor to a linear rod movement. This rod goes up and down ...
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2answers
53 views

Rudder and Main Sail control

I'm creating an autonomous sailing boat and just looking into how to control the sail and rudder. The electronics will be low powered with the main brain being an Arduino. My problem is thinking of ...
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0answers
99 views

Control tons of servo motors with one pin on Arduino?

I'm controlling 15 servo motors with Arduino Uno. The 15 servo motors will be doing the same thing all the time, so I'm trying to using one pin for all of them (But I'm using external power source for ...
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1answer
57 views

Can you use a the vout of a regulator as the cathode and your full voltage as anode?

I have a servo from an rc car with 6 wires, it turns out the servo controller is built into the RC Car with a bad board. I have a motor, a gear box and a 10k pot attached to it. I'm trying to build a ...
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39 views

Servo Not Moving to Commanded Position

The following servo: https://www.sparkfun.com/products/11884 (4.8V - 6V) is being used in a robot that I've got. While I was running off ofthe 5V output from my arduino, it was fine. The current draw ...
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3answers
135 views

Anything Wrong with my Light box Design?

I am creating a custom box that will contain 3 * 400 watt metal halide bulbs (1200 watt total). The box will remain closed for 60 minutes, open for the next 60 minutes, then closed, then open and so ...
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1answer
124 views

AVR Attiy45 PWM Servo motor control in Assembly

I'm trying to contol a servo motor with attiny45 writing the code in assembler. I figured out how to set the timer in pwm mode and how to choose a needed prescaler. And with different OCR0A values i'm ...
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2answers
345 views

How to prevent servo startup jitter

I have a small Arduino Uno powered robot I'm entering in a competition, and it uses some small servos to position sensors and other actuators. According to the rules, it can't move until a ...
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1answer
207 views

Need a very low power, low force motor/actuator

What are some alternative types of motors/actuators that can be used instead of servos? I need some way of inducing a slight bit of motion/movement but with very little force and power consumption. ...
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130 views

Arduino Uno/Multiple Servos - Single Power Source

With full disclosure, I am a noob at this, so please be gentle as I have researched this across multiple boards and am frankly confused by the answers: Short Version: I have built an Iron Man Suit ...
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1answer
96 views

AVR's and DC Motors\Servos

I've been browsing around looking for some information on motors\servos and AVR's (my MCU of choice). Motors\servos are in my gray area, meaning I'm still not too into them, but I could do something ...
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1answer
65 views

position control mode of industrial servo motor

I have searched alot about industrial servo motors and their application but the problem is about the pulse command used in position control mode, can I use a 555 timer for the generation of such ...
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1answer
51 views

Most energy efficient and very small volume way to produce motion

I'm looking to make motion (may be 100g) using very small, and very energy efficient component, and prefereably very cheap, i've found some nano servomotors which satisfy my criteria, but i wonder if ...
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1answer
47 views

Can a linear motor output multiple and precise linear forces?

I am trying to identify a motor-driven system that can produce a constant linear force in one direction. The context for this is an injection device that compresses the plunger of a syringe ...
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1answer
628 views

How to determine the rotation direction, rotation angle and rotation speed of a stepper motor and a servo motor

During one of my lab session I faced this problem and couldn't find any good answer. As far as I know for a stepper, Reversing the direction of current will change the direction of rotation. ...
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3answers
53 views

Is it possible to run 2 motors independently with USB?

Is it possible to run two motors independently in both directions with usb using no microcontroller but just some discrete components? I'm trying to create the cheapest possible robot that can just ...
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70 views

Custom servo motor for low power applications?

I'm trying to design a low-power device that is essentially just a heavy duty servo motor that is triggered on and off by an internet connected chip. This device needs to be very low power, running ...