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Topic: Stepper Motor Based Linear Actuator (Read 1 time) previous topic - next topic

OSOO

Hello,

I want to use Arduino to control a stepper motor based linear actuator ,I want to use this stepper to drive a simple syringe filled with fluid in a range of 1 to 10ml  ,please can you suggest me an online shop where I can find  a suitable stepper motor for my application ? Please help I need it ASAP ,I would be so grateful

Robin2

You will need to know a good deal more than you have posted in order to select a suitable motor.

There are several (maybe dozens) of on line suppliers. Where are you located?

...R


raschemmel

Whatever solution you choose it will need to include micro-stepping. That is a feature that is not included in many stepper drivers.
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,
DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

OSOO

I live in Yemen(middle east)


could you please see this link :

http://www.haydonkerk.com/LinearMotionProducts/StepperMotorLinearActuators/tabid/66/Default.aspx

These motors can be used for micro-stepping ,but please I have some questions:

what is the difference between captive ,non-captive ,and external stepper ?

how I can know the diameter of the screw ?

in my application ,do I plug the actuator to the syringe directly !?

raschemmel

Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,
DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

OSOO

Guys please is there a way to buy Haydon products over the net

jremington

What is the minimum volume of fluid that you intend to dispense?
How accurate must this volume be?
"It seems to run on some form of electricity"

raschemmel

#7
May 03, 2014, 08:05 pm Last Edit: May 09, 2014, 07:20 pm by raschemmel Reason: 1
Quote
Guys please is there a way to buy Haydon products over the net  

Have you heard of email ?
Arduino UNOs, Pro-Minis, ATMega328, ATtiny85, LCDs, MCP4162, keypads,
DS18B20s,74c922,nRF24L01, RS232, SD card, RC fixed wing, quadcopter

TomGeorge

Hi, sounds like you are trying to imitate an insulin infuser that a lot of diabetics wear these days to provide small almost continuous supply of insulin to keep their blood sugars stable.
Have you tried looking in the medical or laboratory field, I know they will be expensive, but the theory and practice may help your implementation.

Tom... :)
Everything runs on smoke, let the smoke out, it stops running......VK3DMK

OSOO


What is the minimum volume of fluid that you intend to dispense?
How accurate must this volume be?


0.1 - 1 ml / hour

my application requires a very high accuracy :)

OSOO


Hi, sounds like you are trying to imitate an insulin infuser that a lot of diabetics wear these days to provide small almost continuous supply of insulin to keep their blood sugars stable.
Have you tried looking in the medical or laboratory field, I know they will be expensive, but the theory and practice may help your implementation.

Tom... :)


Yes that is true , my project is to control the infusion of medical solution using microcontroller :)
I only need the linear stepper motor actuator ,I have found a number of these medical infusers ,but I want to make my own assembly.

OSOO


Quote
Guys please is there a way to buy Haydon products over the net  

Have you heard of email ?


I sent many emails to 3 companies, but I have not received a response ,so this is why I asked the question, If there is an online store where I can find linear stepper motor actuators ,that would be great :)

jremington

This linear actuator may be suitable for driving a syringe pump, but it is still quite coarse compared to many others available. To get higher resolution you need a lead screw with a finer pitch. http://www.pololu.com/product/2268
"It seems to run on some form of electricity"

OSOO

Thanks guys,

I have one more question please, How could I determine the force required to exert on the syringe ?

jremington

Usually that is  not an issue. Most motors, geared down by a lead screw, are very powerful compared to the resistance offered by a syringe driving a tiny fluid flow.
"It seems to run on some form of electricity"

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