Show Posts
Pages: 1 ... 3 4 [5] 6 7 ... 73
61  Community / Bar Sport / Re: Best digital multimeter? on: September 13, 2013, 10:29:17 am
BEST is at best a relative term. It depends on the real need.

That said, If you can afford a FLUKE meter you will never regret buying it. They are accurate and reliable and the only thing I have ever seen damage one if the High Frequency used to fire off a plasma torch. Other than that, I love a FLUKE meter.
62  Community / Bar Sport / Re: Which is your favorite programming font? on: September 13, 2013, 10:22:23 am
Downloaded and installed the Dina font that Nick Gammon suggested. WOW!!! Makes my code look really impressive. I wrote some really good code! I set it up as the editor font in Visual Basic 6 and it is a clean readable font.

Thanks Nick.
63  Community / Bar Sport / JUNK on: September 13, 2013, 10:19:58 am
Sorry, a new thread/double post because I had to take care of something else and the website timed out...
64  Community / Bar Sport / Re: Syria‚Ķ What to do? on: September 12, 2013, 02:19:31 pm
Unless we have a plan to go in and really straighten things out, it is just a waste of time. The problem with that idea is that it would cost a lot of money and lives, and the Democrats would lose interest long before the job was finished.

It used to be that wars were fought to win and take over and control some piece of territory. Now wars are fought to????? The last war we won was World War 2. in Korea, Viet Nam, Iraq and Afghanistan we have ended with the enemy still in power, and probably in a better position than when it all started.We have never gotten out of Korea and have never had the guts to go to China and suggest that the elimination of the Kims would be a big economic opportunity all around. What has happened is that we seem to feel that we have an obligation to treat with utmost respect those that have no respect for others. If they choose to attack, then that should be sufficient motive to conquer. But no, we want to start and then leave and hope that somehow they will now love us and wnat to emulate us in every way. When what really happens its they decide we are weak and wishy-washy and they continue with their previous behaviour becase they know we have no stomach for anything after the first 15 minutes...
65  Community / Bar Sport / Re: is Debt magical? on: September 12, 2013, 01:24:23 pm
Actually, Debt is magical. It convinces you that you are better off while at the same time diminishing your future. Debt is a way of getting today what you would not buy tomorrow because it is crap. Debt is a way of paying for trouble over a very long period of time. Debt is a way of paying for stuff after it is out of warranty and probably no longer functioning.

National Debt is a way for politicians to feel good about all the great stuff they are delivering to their constituents while leaving it to the folks who around after those politicians are long gone to pay for it.

Being debt free means that you don't have to pay folks a chunk of cash every month for the priveledge of using their money. Being debt free means that if you lose your job you don't lose everything else also. Being debt free means you can take that trip and have the money to pay for it before you leave. Being debt free means that you can put money in your account every month instead of someone else's (interest...). Being debt free means that you wait to buy something until you have the money, and then find out that you really needed something different and could buy it instead. Being debt free means that when you bring it home you actually own it. Being debt free means that you don't have to resent your family because they really want that money back. Being debt free means that you can be the one helping other people when some disaster happens in their life. Being debt free means that you actually have control over part of your life. Being debt free means that when you have it, it's really yours. Being debt free means that you work for you, and not this man and that man and some other man...
66  Community / Bar Sport / Re: Translations on: September 11, 2013, 03:02:11 pm
The problem with translation is that not only does the software have to look at the word, but the idea that is being expressed. And a given word may express different (and some times extremely) ideas depending on whether it is in the arts or technology or industry. (Context)
And some languages seem to have more words to express and idea. I find that translation form English to Spanish is generally very good, but from Spanish to English can be a bit rough. One of those ideas that doesn't do well is the idea of the English word can. I can do something, can you do something. There is no direct translation and how can you be sure that the Spanish phrase is expressing the "can" idea of something more literal?  Then there are those ideas where we have many words and in Spanish they roll a number of those ideas into 1 word.

I only use English and Spanish because I am familiar because of some work I do across the border in Mexico.
67  Community / Bar Sport / Re: Which is your favorite programming font? on: September 11, 2013, 01:37:42 pm
I prefer Courier or Courier New as being mono-spaced and, in my opinion, much more readable in a 10pt size. To my eye, Colonas is hard to read. The line weight changes and I find it distracting. It would be nice if Courier had the slashed zero but the round oh and the square zero is very readable.

Of course, some of this might also be due to the monitors I am using.

For normal reading I prefer Times New Roman. The shapes and sizes are such that I can read it very rapidly.
68  Using Arduino / Motors, Mechanics, and Power / Re: controlling a 8 wire Brushless DC motor. on: September 10, 2013, 04:35:42 pm
4)CLK and 3)CW/CCW are what are normally called STEP/DIRECTION inputs on a stepper motor type interface.
5)ST/ST (START/STOP) is ENABLE when low.
GAIN might be a tach feedback from the motor.

For any more help you need to give us the data sheet for the chip.
69  Using Arduino / Motors, Mechanics, and Power / Re: High level switching with PNP darlington on: September 10, 2013, 04:30:11 pm
LEDs and bulbs won't need the flyback diode. They ARE NEEDED for inductive loads like motors, relays and solenoids. Putting them in won't hurt anything, they just won't do anything.
70  Using Arduino / Motors, Mechanics, and Power / Re: Need super fast stepper motor/driver on: August 20, 2013, 01:51:25 pm
What you need is an industrial Servo Motor/Driver combination. They make them in sizes from 30Watts and up. Yaskawa,  Automation Direct. (there are others, their websites aren't as friendly...) They are more expensive, but capable of much faster motion with more accuracy because the drive itself does more of the work. They also cost more. Smaller motors are capable of 5000RPM, throw a gearbox on and yo can slow that down.

NOTE : These are NOT hobby servos. They are a servo like used on industrial machines and industrial robots.

71  Using Arduino / Motors, Mechanics, and Power / Re: My sensor needs 18 ... 30 V DC.. on: August 20, 2013, 01:38:34 pm
Also be aware that this is a current type output so you will need a resistor between the output and ground for the Arduino to read the voltage - E=IR  or R = E/I or R = 5V / 20mA or R = 250 Ohms. Voltage reading will go from ~0.8V to 5V
72  Using Arduino / Motors, Mechanics, and Power / Re: Powering Large Numbers of LED's on: August 20, 2013, 01:34:32 pm
By putting the LEDs in series, using a higher voltage supply and using a MOSFET as the switch. In some ways it would be just like using the same basic idea as for driving a motor. To do this it would work best if you could use 3 different color LEDs rather than using a 3 color LED. By placing the LEDs in close proximity the colors would blend and the net effect would be the same.
73  Using Arduino / Motors, Mechanics, and Power / Re: motor rotation limit on: August 16, 2013, 02:34:33 pm
It would appear that if you start the sketch with the motor positioned on the switch then the sketch just continues to run the stop code.

val = digitalRead(buttonPin);
  if (val == LOW) {

if val is already high then this code will never run. So - the motor runs until it trips the switch and stops, and if the switch is still tripped the motor will never start again.
74  Using Arduino / Motors, Mechanics, and Power / Re: Need help on PWM and interrupt issue on: August 16, 2013, 02:31:04 pm
It would appear that you are wanting to do some timer interrupts, which means that you are altering the settings of the timers to something othar than the Arduino libraries are expecting. Because you are changing the hardware yourself, other things can be expected to break. When you make low-level changes, the high-level language programming language doesn't know what you did and makes the assumption that everything is just as it wants.
75  Using Arduino / Microcontrollers / Re: Burning Flip with Arduino bootloader on: August 16, 2013, 02:18:44 pm
No - But you can use another Arduino as a programmer using then ArduinoISP sketch and then use avrdude to talk to do the programming.
Pages: 1 ... 3 4 [5] 6 7 ... 73