50% Off Crazy Sale..

http://www.cytron.com.my/index.php

You have 7 hours from this posting... some stuff are cheap, some are okay price only...

The rated current for my 2-phase stepper motor and DC motor is 1A/phase and 0.9A respectively based on the datasheet.

So, shud i get this battery - 12V/2.3Ah Lead Acid???

Yes they will work based on your spec.
2.3Ah means they will last for 2.3 hours if drain at 1A continuously.
Note that you shouldn't force lead-acid to run until it's completely drained as the battery lifetime will be shortened. Better recharge after 20-30minutes runtime.

So, my battery will only last for about 45 mins??

Stepper motor 2A + DC motor 0.9A roughly about 3A
And then 138 mins / 3A = roughly 45 mins??

Am I right?

Hey guys, I'm new here.

Can you guys recommend me a nice PIC programmer. I'm a little tight on the budget and I'm working something on a PIC18F4620 (40-pin DIP).

Thank you.

Yes.


Search for Pickit2 or the newer Pickit3 programmer/debugger. Cost roughly ~MYR200 though I haven't been keeping myself updated. If they cost almost the same now, then Pickit3 is hands down the better choice.
Or if you've got more budget, then ICD3 is the next step. Should be >MYR1k in Malaysia.

There are also plenty of Pickit2 and ICD2 clones, but note that both are based on the older version "2", with limited future support.
My advise is don't get a cheap programmer that doesn't have debugging capability.

Thanks for the reply but I still have a little doubt. When I searched around, some told me the PicKit series is kinda slow (programming speed) because it's ICSP? Can you clarify this?

Ya I was considering those clones, since you recommned PicKit3 I think I will get that one if there is no better option. I'm not looking at anything above RM500.

Thank you for your reply.

Err.. Pickit series slow in programming?
I've used PicKit2, ICD2 and ICD3. Never feel any difference in the programming speed. Mostly done in 5s.
ICD uses ICSP too, so I doubt the programming speed will differ much.

On the other hand, if you say debugging speed, that might have some basis. Well actually ICD are better in this regard simply because it uses a faster MCU with larger resources internally and uses high speed USB. All PicKit series only offers basic debugging support i.e. single breakpoint. But still depends on MCU, e.g. PIC16 families aren't able to utilize the advantages.

And it's funny most people tend to ask about programmer but care little about the debugging capability.
Programming is easy, but debugging easily takes up >50% of the time.

Clones are usable, just you'll not get much future support, meaning not usable for the latest and fastest MCU offering from Microchip. As I know, PicKit2 already doesn't support the latest PIC16F family whereas PicKit3 does.

If you're new with low hardware experience, consider getting the PicKit packaged with a simple development board.
That way when you're stuck, at least you can always fall back to a known working platform. The cheapest ones with a few leds + buttons just add ~MYR50 ringgit only.

anybody know where to get Texas Instruments' MSP430 ? do they even have it in Malaysia?

What do you want to use it for ?

Get from Farnell or RS lah.

the dev board still not in stock. wanted to buy a bulk for some electronics demo/teaching purposes.

the $4.30 one , Rm20++ right?

i dont want to use arduino for MPPT .

This post has been edited by spacelion: Dec 13 2010, 10:51 AM

Just to bring back the thread from death.

i got my MSP430 from farnell. have to wait for 2 weeks last time although they quoted me 2 month lead time. Do notes that those MSP430 are low power device, 3.3v.

Nothing beats the simplicity of working with arduino though.

I plan to make a probe for soundcard oscilloscope like below ...

http://www.ledametrix.com/oscope/index.html

Anyone tried this before and care to give some advise or other ways to do it ??

Be careful not to fry your sound card. other than for playing around the sound card oscilloscope doesn't really do anything useful.

Yes, hehe, just feel like messing around with a software based before buying an actual DSO...

Will use a spare PCI sound-card instead of the on-board sound-card...

You can get it here at my store.
Aztronics Store
Quite a few MSP430 family MCUs available..also PIC Micro too..

anybody play with FPGA? burned(cooked, not program it) my arduino on my last project and since FPGAs are really coming down in price. might want to look into it. got 50usd digilent BASYS2 spartan 3e on the internet but i have never ordered anything oversea yet.

hey all u electronic enthusist,

im currenlty on to a project to build a retro 70s looking iphone dock from scratch.

but im stuck at the electrical part.
i plan to use car audio component set.
2 tweeter, 2 speakers and 2 crossover.
now the prob is i need to know how do i make them to be compatible to normal house power.
how to fit all into a small radio looking device.

its something like this
http://www.wolfeil.de/

can some1 guide me?

what about your amp?
got it already?
there are some amp IC that you can use to make your amp
google is the best way to get the schematics
for power,you can get Power Boards for DVD player if you want
it have +5V and +12V output for your DC circuit,hehehe