Search found 51 matches
- Wed Jul 03, 2019 10:58 am
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
I'm still irritated by you statement about the distance: (i.e 500 to 1000 meters or above) That is quite a number and requires solid construction work, with intermediate supports, solid belts and large engines, ... Clearly beyond of what is normally considered here. So are these numbers correct? Hi...
- Mon Jul 01, 2019 7:57 am
- Forum: ESP8266 boards
- Topic: LCD 1602 - Library
- Replies: 57
- Views: 103170
Re: LCD 1602 - Library
In particular, this code: msg = 'This is a scrolling test. ' if (len(msg) < lcd.num_columns): msg += ' ' * (lcd.num_columns - len(msg)) for i in range(len(msg)): len2 = min(lcd.num_columns, len(msg) - i) len1 = lcd.num_columns - len2 msg2 = '' if len2 > 0: msg2 += msg[i:i+len2] if len1 > 0: msg2 +=...
- Sat Jun 29, 2019 7:00 am
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
I agree with @jimmo: You don't need the precise positioning that a stepper provides since you are moving the object over distances much larger than the size of the motor. Thanks for updating the diagram. Is this a conveyer belt? How heavy is the belt? Is the belt being supported? You are going to n...
- Fri Jun 28, 2019 4:36 pm
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
I'm not quite sure I understand the diagram sorry. Is the object supported vertically by the same rope that's moving it side to side? Or is hanging on a different (tight) rope, and you have a separate line connected to the motor to pull it? What does the pulley do, etc. Also I'm not sure a stepper ...
- Fri Jun 28, 2019 12:02 pm
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
Then you need to calculate static and dynamic friction of your system. And then whatever acceleration you want to provide to the object. But 1000 metres?? You've got a bunch of other practical considerations to worry about. Like 1000m of rope probably weighs more than your object! Hi Jimmo, it will...
- Fri Jun 28, 2019 9:41 am
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
As OutOfTheBOTS_ has mentioned, motors provide torque, so to answer your question you need to reformulate it in terms of the torque that the motor must provide. i.e. if you're verrically lifting 1.5kg (~15 N) using a rope wrapped around a 50mm diameter drum/spool, then the holding torque is 0.025 x...
- Fri Jun 28, 2019 8:54 am
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
Hi OutoftheBOTS, i have less knowledge on stepper motors. so, which stepper motor is suitable to hold an object (weights arround 1.5kg and less) and move from one end to other end.OutoftheBOTS_ wrote: ↑Thu Jun 27, 2019 9:18 pmYou need to choose a stepper motor that will provide enough torque for the job that you will be using it for
- Thu Jun 27, 2019 9:23 am
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Re: Driver for NEMA 17 stepper motor ?
Thank you both for sharing the details. i am going to buy below mentioned items. please let me know if i am choosing wrong once. stepper motor:- https://www.amazon.in/BestPriceEver-Bipolar-Robotics-Two-phase-four-wire/dp/B07MQSCBGN/ref=sr_1_7?keywords=nema+17+bipolar+stepper+motor&qid=1561626524&s=g...
- Wed Jun 26, 2019 8:15 am
- Forum: ESP8266 boards
- Topic: Driver for NEMA 17 stepper motor ?
- Replies: 15
- Views: 12149
Driver for NEMA 17 stepper motor ?
Hi All, After watching few videos on stepper motors in youtube , i am interested in developing small project with Nema 17 stepper motor(Assuming this motor will fit to my project) with ESP8266. My basic idea is to move an object from one end to other end with the help of rope(which will hold the obj...
- Wed Jun 26, 2019 5:52 am
- Forum: ESP8266 boards
- Topic: How to switch on a electric bulb with ESP8266 board?
- Replies: 50
- Views: 31353
Re: How to switch on a electric bulb with ESP8266 board?
Thank you very much Robert for sharing the details. i will try and get back if i have any questions.Roberthh wrote: ↑Tue Jun 25, 2019 10:23 amYou should try the driver made by @pythoncoder https://github.com/peterhinch/micropyth ... ter/DS3231
It was made for PyBoard, ESP8266 and others.