dan8400
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posted on 13/1/10 at 03:25 PM |
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Megajolt. Broken Chip..... need codes
I have assembled my megajolt lite jr but have trodden on the last chip. It is a 16 pin "Processor Freescale MC908QB8" or U1 in the
instructions.
Does anyone know if i can get one like it from maplin? What do i need to order? The code doesnt give me anything and i dont know what the chip does.
Any advice is appreciated
Thanks
Dan
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andyharding
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posted on 13/1/10 at 03:28 PM |
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Think that the brain programmed with the Megajolt code so only going to be 1 supplier of a replacement I think...
Are you a Mac user or a retard?
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David Jenkins
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posted on 13/1/10 at 03:29 PM |
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Yes - get in touch with Brent Picasso at Autosport Labs. Hopefully he'll be able to offer a replacement (I'm sure he will).
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iank
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posted on 13/1/10 at 03:37 PM |
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Can you straighten out the pins? 16pin DIL chips are pretty robust.
Unfortunately as said it's the pre-programmed brain of the thing so it's not available from the normal suppliers.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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James
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posted on 13/1/10 at 03:52 PM |
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quote: Originally posted by David Jenkins
Yes - get in touch with Brent Picasso at Autosport Labs. Hopefully he'll be able to offer a replacement (I'm sure he will).
Presumably Bill Shurvin(g?)ton or the other suppliers could help too?
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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dan8400
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posted on 13/1/10 at 03:56 PM |
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I have found a chip with the exact same code on a website "farnells".
Will this be any good?
It is exactly the same pin layout and model number. Does it need programming then?
Dan
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blakep82
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posted on 13/1/10 at 03:58 PM |
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^ presumably its some kind of ROM chip, so will need programming
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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iank
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posted on 13/1/10 at 04:09 PM |
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quote: Originally posted by dan8400
I have found a chip with the exact same code on a website "farnells".
Will this be any good?
It is exactly the same pin layout and model number. Does it need programming then?
Dan
Yes, Farnell are a good supplier if you can find someone with a programmer.
[Edited on 13/1/10 by iank]
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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MikeRJ
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posted on 13/1/10 at 04:14 PM |
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It's a microcontroller, so it needs programming. As supplied with the MJ kit the micro has been programmed with a bootloader so you can update
the firmware via the MJ serial comms port. To program the bootloader onto the chip you need a proper device programmer
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dan8400
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posted on 13/1/10 at 04:23 PM |
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Ok,
unless anyone on here can programme me a chip i'll get in touch with autosport labs to get a replacement.
Regards
Dan
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David Jenkins
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posted on 13/1/10 at 04:56 PM |
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You'll probably find the price very reasonable - he's not a rip-off merchant.
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blakep82
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posted on 13/1/10 at 06:35 PM |
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quote: Originally posted by David Jenkins
You'll probably find the price very reasonable - he's not a rip-off merchant.
thats true. megajolt could easily have been double the price it costs, for what it does and stuff
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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MikeRJ
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posted on 13/1/10 at 06:42 PM |
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Unless you completely snapped the legs off the chip or cracked the package in half it's probably salvageable by straightening the pins
carefully. You only tend to get one go at this however, as the copper pins work harden and snap the next time.
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iank
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posted on 13/1/10 at 07:42 PM |
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quote: Originally posted by MikeRJ
Unless you completely snapped the legs off the chip or cracked the package in half it's probably salvageable by straightening the pins
carefully. You only tend to get one go at this however, as the copper pins work harden and snap the next time.
Even if you snap the legs off at the package they're still salvagable in an emergency with a turned pin socket, a good soldering iron, a dremel
and a steady hand. (flashbacks to an important demo next day and a boss disaster at 6pm!!)
Wouldn't recommend it in the car as vibration would kill it in weeks, but enough to get you going while you wait for a replacement to be sorted.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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MikeRJ
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posted on 13/1/10 at 08:07 PM |
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quote: Originally posted by iank
Even if you snap the legs off at the package they're still salvagable in an emergency with a turned pin socket, a good soldering iron, a dremel
and a steady hand. (flashbacks to an important demo next day and a boss disaster at 6pm!!)
Did this as a temporary repair on a laptop a few days ago where someone had spilt a drink into the keyboard and it had leaked down onto the PCB and
completely rotted away one pin of a voltage regulator!
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