I have couple of new questions;
1) I just bought stepper motor PN 324, for my application it appears it may not have enough drive torque in which to turn my needle valve and the motor slips. I am sorry but I am not sure how much force is required to rotate the valve, if I remove the packing from the valve stem it can rotate it however it needs to have the packing to keep from leaking. So does Adafruit have a stepper motor with a greater drive torque value or do you have any suggestion? ( I am powering the motor with a 12Vdc 2amp power supply)
2) When I increase the rpm value it has no effect on the motor speed, the code I am running with was posted previously in this form.
3) I have added the ability to monitor temp from a board that is a RTD to digital converter (from playing with fusion had you offered such a board I would have purchased it here, sorry) that reads a PT100. For my project I would like to control the valve opening via the temperature read and/or timer. Do you know of any examples by which I my gleam ideas as how to accomplish this?
Thank you for any suggestions you my have,
Newbie 64
Adafruit Motor Shield v2.0 Stepper programing
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- Newbie64
- Posts: 48
- Joined: Sun May 04, 2014 3:50 pm
- adafruit_support_bill
- Posts: 88096
- Joined: Sat Feb 07, 2009 10:11 am
Re: Adafruit Motor Shield v2.0 Stepper programing
To increase the torque, you move to a more powerful motor, or add gear reduction. https://learn.adafruit.com/adafruit-mot ... red-motors
We have a small selection of link-belts & toothed pulleys in the store. Suppliers such as McMaster Carr have a wide selection of gears pulleys etc.
We do not carry any more powerful motors. There are several on-line sources for industrial stepper motors. Read the motor specifications carefully to determine if it is suitable for use with the shield.
https://learn.adafruit.com/all-about-st ... he-stepper
With high step-count motors, the maximum step rate is limited by the 12c bus-speed. This can be increased. See the bottom of this page: https://learn.adafruit.com/adafruit-mot ... rduino/faq
The SousViduino project is one example of temperature-based feedback control. https://learn.adafruit.com/sous-vide-po ... us-viduino
We have a small selection of link-belts & toothed pulleys in the store. Suppliers such as McMaster Carr have a wide selection of gears pulleys etc.
We do not carry any more powerful motors. There are several on-line sources for industrial stepper motors. Read the motor specifications carefully to determine if it is suitable for use with the shield.
https://learn.adafruit.com/all-about-st ... he-stepper
With high step-count motors, the maximum step rate is limited by the 12c bus-speed. This can be increased. See the bottom of this page: https://learn.adafruit.com/adafruit-mot ... rduino/faq
The SousViduino project is one example of temperature-based feedback control. https://learn.adafruit.com/sous-vide-po ... us-viduino
Please be positive and constructive with your questions and comments.