Member postings for martin perman

My wife and I live in a village approx five miles from Bedford, we have reasonable Broadband, most of the time but its not that fast, via the phone line but fibre optics is a no no, BT say we may get it by 2016/17. As soon as you move away from towns the installation of projects becomes how long is a piece of string.

Martin P

Ed,

Several years ago I bought an old stock new truck air brake tank which I use to increase my volume of compressed air, the threads for fixtures and fittings are the same so no problem connecting up.

Martin P

Harry,

I might be wrong but the way I would do it would be to find, if it exists, a three way switch with the centre position off and the other ways wired individually to give the CCW and CW. The switch would be wired to replace the links as in your drawing.

Martin P

William,

May I suggest you look at the internet as well as the price of winch's at trailer stockists can be very expensive.

Martin P

I inherited an Adept lathe and that was certainly black, I no longer have it as a friend took a shine to it.

Martin P

Speed should not be a problem if the winch comes with a pulley block with a hook attached, you pass the winch cable through the pulley block and anchor the winch hook back onto a secure point on the trailer, you then take the pulley block to the load, this then allows the winch to work up to its max pull and halves the winch speed allowing a slower controlled pull.

Martin P

Edited By martin perman on 26/11/2014 15:08:08

Bill,

I have a 2000lb pull winch I use to haul my Petrol stationary engines into my trailer which is also up a steepish ramp, I have been using an old gel battery which used to be used on my wife's electric scooter, I changed my wife's scooter batteries about four years ago and its only recently that I had to scrap them.

My largest engine is a tank cooled Lister L which is no light weight.

Martin P

Edited By martin perman on 26/11/2014 12:08:56

Gentlemen,

Thanks for your thoughts this is for me a very interesting thread.

Martin P

Jack,

Thank you for your answer, at the moment it, just to learn about the control and use, as I've said I have experience of Siemens S7 controllers and was curious if the Arduino can do multi tasking, as its difficult to determine its limitations from scratch, I assume I can do nesting of programs which will do what I require.

Once I have some idea of whats a foot I then would like to build a project for myself.

Martin P

Just to cheer you lot up I havent had any problems at all

Martin P

John,

Thank you for your response, I should have been more specific, I work with Siemens S7 PLC's so do know that you can run several programs at the same time, my problem is that I cant see how I can do it with the Arduino UNO R3, the example I wish to modify is on their web site and doesnt use a driver as such but I would need the appropriate chip identified in the example.

Martin P

Gentlemen,

As I explained recently I'm currently off work with a poorly right foot, I decided to broaden my mind and was captivated by the Arduino thread and I've treated myself to a UNO R3 and a few bits and pieces to teach myself programming and understanding electronics "Basics".

I've been reading a lot about the subject on the Arduino Website and various other sites regarding unipolar and bipolar stepper motors. There is a basic circuit on how to run a stepper using the R3 with a potentiometer but I wish to modify this by driving the motor to a specific position using a number of steps, if I'm correct the motor is driven by pulses so am I correct in thinking that if I send ten pulses it will move ten pulses.

I also wish to count the pulses to make sure it can be checked but I need to know two points a) can I use the pulse as a signal source for the count and b) can the UNO R3 run two programs at the same time i.e one program driving the motor and the other checking where it is, the programs I've looked at so far are sequential so move check, move check etc if two programs run independently you can drive the motor and at the same time check its position and use a register to stop when a position is reached, are my thought running in the right direction.

Thank you,

Martin P

Edited By martin perman on 21/11/2014 18:23:12

Andrew,

I work with Siemens inverters and submersable pumps and occasionally we have to change a pump, occasionally we get a motor overload alarm like you describe and its caused by the fact we have forgotten to set the motor amperage correctly in the inverter parameters, regarding the getting warm I agree with neil, if your running the motor below its normal speed it will warm because the fan is moving enough air, you could overcome this by fitting another, electric, fan which runs at its own speed cooling the motor.

Martin P

Bring on the router table, that would interest me.

Martin P

My twopenneth,

I'm a mechanical engineer who could not work wood if my life depended on it, for a start it catches fire when trying to weld it, I may not be immediately interested in making a wooden tool box but the techniques used to produce the item allow me to learn for the future, dont tell SWMBO I might might know a little about working wood otherwise she will add to her list of targets sorry jobs keep the 1-2% coming.

Martin P

Edited By martin perman on 18/11/2014 11:43:42

Its still on offer at this moment, needs a HDMI screen, keyboard and mouse but looks interesting enough.

Martin P

MichaelG,

I was using my notebook and hadn't scrolled up to see it, thanks now sorted.

Martin P

IanT,

Could you point me in the direction of the Processing book as I cant see it for looking.

Martin P

Gentlemen,

I down loaded the software into both of my computers, running windows 8 and found I didn't have to mess around with the drivers etc as per the Arduino instructions, I then spent a good hour +, daughters taken wife shopping poking around and modifying the example programs, I ordered some parts so that I can learn how stuff works.

I found the programming language largely understandable for a mechanical engineer with electrical knowledge so there is hope yet.

Martin P

IanT and Gentlemen,

I ordered my UNO R3 yesterday and this morning it arrived in the post, Total including postage £22.15p, no lead supplied but that's not a problem as I have one, whilst my Daughter takes her Mother shopping on Sunday I shall put my Notebook next to my Laptop and download the necessary software and read the instructions on the Notebook and then start "playing". Looking at the R3 board I can relate to all of the connections so let the fun begin.

artin PM