Hi, I'm trying to get together a parts list to start working on building a bandsaw (for logging). The problem is I'm not exactly sure what I should be focusing on to make sure I get the right electric motor(s) in place. I know I need something with high torque and variable RPMs to run the blade itself, but I also want want something with a lot of torque and a little rippums to advance the blade. Being a motor built for outdoors would be ideal but I think the whole assembly is gonna end up being shielded for dust purposes anyways.

Finally, I'm mostly looking to salvage parts and get them cleaned up and running if possible. The cheaper I can source this stuff the better. Any and all advice and recommendations would be greatly appreciated.

Are these two components compatible and can you explain how i would wire them together? A brief explanation is fine i just need to be pointed in the right direction and i can figure out the rest.

if they are not compatible then can you suggest something that is compatible with the compressor motor?

Thanks for your help!

Motor controller: https://www.ebay.com/itm/193244563546?_skw=DC+motor+compressor+speed+controller+regualtor&itmmeta=01JF4ARR926F9C72ARF05P4VY6&hash=item2cfe46085a:g:fFkAAOSwgtdd6tk8&itmprp=enc%3AAQAJAAABEHoV3kP08IDx%2BKZ9MfhVJKkiOYgu0HmxfDrGd%2B0c7SkY7eZ%2BUnQz9W3YdsVF7StnZvUoqccBDojGTeDMQc9UAFBZaBD5TLLtMGyv9HQ8JiQJyfNB8F%2BhMZ2fNEX9%2BwWfLMGDR9Cqf2OGpYnB2br848iYm78b7Ib3ozBwkNQFO0FXP4qiW55IfTBcodhwzkUm2BUbEi1qjsNHFA607Q0fwp%2B0EucypQ5eRq2D84%2F3U4VmizMbPGB%2FDqQYIQKp8g4Bqcfa06BVE1n2%2BeRkOBr5N3geFBwKTpNXOwIbDkyMQIxE8edaWmOerOIm00lDHqjH7C2bHZ79Po2srxN8gb1JsWucSNy0NIyD6K38eD%2FlJM02%7Ctkp%3ABk9SR9SE44r5ZA

DC motor (refrigeration compressor motor):

https://www.ebay.com/itm/394973594549?_skw=DC+24V%2F48V+R134a+Mini+Brushless+Refrigeration+Inverter+Compressor&itmmeta=01JF44JTKM54SFR4Q64Q73YPEE&hash=item5bf642c3b5%3Ag%3AqRIAAOSwtNlnTmYQ&itmprp=enc%3AAQAJAAABAHoV3kP08IDx+KZ9MfhVJKklbHEtgLtdc9Z3ToG1G3+QVcn3h9P9zdoIBeXHu0uU6geCfiv8tz9DXc1cKTDlyHBgl9j1wkvRT+jxMglCjsWTxpmFMku+r4WdFLBi1VlYCdynv1%2FQNi0SbSHIdsKkDER8Bmoh75Htx9DGXqjoMsUIspNysHz0FlPhciA9sRmsP1OfrImhlLm1aFDshh6omqXvfL6LqvQbRfTOjqc1AyHSUq9a52Ass1vOxdcAZ+Oo3unFAIsF7FfXgvp++3x3%2FRbNkfk5TqGNoTC2%2FdlVts%2FlW9jfKDg9PbFwzeEVV8nOfJLoF2YHlDV2Mmwuh9cFiEg%3D%7Ctkp%3ABk9SR_Cpy4T5ZA&autorefresh=true

I bought an open box portable washing machine from eBay, assuming it would be good as new. It took a week to arrive, and when I used it, I noticed the motor was struggling. The washer is advertised as having 250W input power with a "powerful 250W motor" (this is a small machine, so it only has a fraction of the capacity of a regular washing machine, FYI).

I changed the amount of clothes, no difference. I could see and hear that it was still struggling. I changed the amount of water, no difference. The load of clothes and water only rotated once in each direction before switching. These machines are designed to spin rather fast, and agitate the clothes enough to spin too many times in either direction for the eyes to be able to count (I have had a similar machine in the past, and have watched many videos on these types of machines. They all work the same way). I decided to remove the back panel, and was expecting to find some loose bolts or something. However, before touching anything, I saw what appears to be a 90W motor. It says XD-90 WASH MOTOR 110-120V 60Hz 90W 1.7A 32uF/450V Class E Mingbo Mango Electric Co. LTD on the right is an electrical diagram, I believe, and it says Red Yellow Blue 2023.10

So, did I get scammed into buying something with a 90W motor that's supposed to have a 250W motor? This is a Deco Home portable washer WSHM01, and throughout the internet, it is definitely advertised as having a 250W motor.

It seems pretty clear to me, but I just want to make sure I'm not misunderstanding. I did get scammed, correct? I am guessing that the open box means the seller secretly removed the motor and swapped it out for something weaker.

Hi, I was wondering if there is anywhere to purchase a pc case fan motor, but just the motor. Google only shows regular pc fans, or drone motors. I need something small, near to silent as possible, low rpm, and 2 wire. It will be going in a decorative shelf item, so the noise part is important and why I can't just use a regular DC motor. I built some prototypes with 2 wire pc case fans and a small pwm unit, and they worked great. However, I would like to build a lot of this item, and manually removing the fan chassis and blades from every single motor is just too much time and effort to be worth it for me. Does anyone know where to buy such a thing?

İ am building a small vehicle that run with motors and is made to be autonomous and has a camera to detect a specific object . İ have Rasper pi and Nividia Jetson . İ want to run the system smoothly . Which microcontroller should i use , or use them together ?

Thank you in advance

I'm in the midst of a project to drive a set of DC motors (4) for the power seat out of a Ford Edge 2020. The motors are unmarked annoyingly, and the spec sheets appear to be non existent at the OEM part level.

I can drive them with 12V directly, and I'm trying to figure out how to get an appropriately sized driver for each of them (or maybe a 4 channel?).

Is there a way I can determine using the multimeter what the peak amperage might hit here? Alternatively, is there a reasonably priced driver I should just look at instead of trying to be exact that would cover my bases?

I'm building a robot for a competition. The expected weight of the bot is 4-5KG max and I want the wheels to move at 250 RPM max with the chassis. I'm exploring different DC encoder motors to see which will suit me best. Using my motors, I want to be able to make the robot move very precisely, so I want the robot to move exactly 12 inches and then turn left and move 5 inches. So the encoders need to be precise.

Budget is a huge concern for me and since I'm based in Pakistan, sourcing from US vendors is a little costly. My best source is AliExpress but I'm hesitant because there's a lack of confidence in the quality. Please recommend me some good motors for my project... I found the following ones appealing:

https://www.aliexpress.com/item/1005007985145395.html?spm=a2g0o.cart.similar_items.18.7abc38daXtHgat&utparam-url=scene%3Aimage_search%7Cquery_from%3Acart_soldout_item

I have 3 small 12v DC motors. There is no short to ground. They all drop in voltage to about 3v and don't spin. I'm guessing the field is shorting to itself. Any suggestions would be helpful.

Hi everyone,

I’m working on a BLDC motor with three Hall sensors, and I’m capturing 6 interrupts per revolution. I’m using the time between these interrupts to calculate speed, but the readings are fluctuating way too much. For example, the speed jumps from 1000 rad/s to 1400 rad/s, which makes it impossible to use in a control loop.

Here’s what I’ve tried so far:

•	Enabled FPU features on my microcontroller.

•	Optimized and shortened my ISR as much as possible.

Even with these changes, the problem persists. Could this be caused by noise, timing inaccuracies, or maybe something else I’m missing?

Would love to hear any ideas or suggestions!

Thanks

I forgot to mention:

•	I'm driving the motor with trapezoidal (six-step) commutation.

•	Im switching only two transistors at a time. I keep the complementary switches off. Is it unipolar independent maybe. Can't remember well.

Hi I’m trying to make a robotic arm that is pretty big around 1m tall and I have quite a strict budget I have to stick to. The best would be to use around 20Nm stepper motor but I’m too poor. What are the different ways to increase the motors torque while not taking up too much space? I was thinking gears but I’m worried it might take too much space. The power of the motor will be less than 3Nm and more like 2 so it’s really weak for what I’m trying to do with it. Worms gear maybe? Planetary? I don’t care for speed as long as it goes where I need it to go with good enough accuracy. Maybe the solution would be to take a completely different approach but I’d like to stick with this as I have already done the reverse kinematics for it I’d like to keep

Hi folks,

I am planning to build a camera gimbal out of brushless motors but found myself some questions I would like to solve before buying stuff. As a first point, this will not be mounted on a drone or RC stuff :

Camera to be mounted: https://www.stereolabs.com/en-fi/products/zed-2 I already have it and cannot be changed by any other.

1st; Electronics:

I have seen some YT videos, read some articles and found two main boards that would be suitable for me I think: BGC 3.1 (2 axis controller) or STorM 32. By the things readed, STorM32 seems to be the best DIY board to build this. However I want to ask you if you know something better or diffent.

2nd; Motors:

Is there any way to calculate which motor do I need for this purpose? If so, which would you recommend? I would need something that could be screwed in both parts of the motor. Mounting brackets will be 3d printed if nothing better.

Thank you in advance for your time!

I'm trying to find a mini air pump motor to use for short bursts. Most of the ones I've found are 6 volts but I found several with 6 volt motors that come with 9 volt battery leads.

I'm only running it for a short time so I'm not sure if I can run normal 370s on 9 volts or not.

Any suggestions?

This would be for short bursts it's not going to be sustaining 9 volt run times very long.

My robotics project needs a high precision stepper motor with the requirements below. What is the smallest, most cost effective option that can fulfill this? Will appreciate any guidance. Thanks.

Max torque: 500Nm

Max RPM: 20rpm

It seems Nema42 planetary geared motor might be able to handle this but not sure.