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Old 04-25-2011, 03:09 PM   #81 (permalink)
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Quote:
Originally Posted by steffen707 View Post
...You have to buy an arduino to program the chip....
speaking of not reading posts

Get a $10 isp programmer and save yourself the gore of arduino+flakey and flash consuming bootloader
Make Your Own MP3 Player

I think there is a USB appropriate project however, but it doesn't necessarily need an LCD (or buttons) if it is connected to a computer.

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Old 04-25-2011, 03:19 PM   #82 (permalink)
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Quote:
Originally Posted by dcb View Post
Get a $10 isp programmer
Or a $16 dev board. Of course, that might not be compatible with the MPGuino code.
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Old 04-25-2011, 03:24 PM   #83 (permalink)
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issat have a regulator?

I've often hoped there would be a "standard" form atmega user platform, like standardizing keyboards and displays did wonders for the PC, except this would just be a couple buttons and an LCD. I saw one board that looked promising a while ago.

It was something like this guy:
http://www.avrfreaks.net/index.php?f...Freaks%20Tools
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Old 04-25-2011, 03:31 PM   #84 (permalink)
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Quote:
Originally Posted by dcb View Post
speaking of not reading posts

Get a $10 isp programmer and save yourself the gore of arduino+flakey and flash consuming bootloader
Make Your Own MP3 Player

I think there is a USB appropriate project however, but it doesn't necessarily need an LCD (or buttons) if it is connected to a computer.
I read that post, but i believe it was somewhere in mpguino release one workspace thread, not here. Anyways, I and many others are new to chip programming.

How does one use this $10 isp programmer with mpguino to prgram the chip on the mpguino board? As in you still have to take the chip out of mpguino right?
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Old 04-25-2011, 03:38 PM   #85 (permalink)
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Quote:
Originally Posted by steffen707 View Post
...
How does one use this $10 isp programmer with mpguino to prgram the chip on the mpguino board?
I program them all in-circuit with a simple diy clip on adapter, i.e.
http://ecomodder.com/forum/showthrea...html#post93201

Thing has lasted forever (knock on wood) and eliminates any extra onboard programming hardware. In fact I made one of them from a plain bbb board and some carefully bent header pins soldered to the underside. Any *duino pcb with an isp header spot could probably be made to work.

bobski, that teensy would be about perfect for logging every sensor on your car and dumping it on a laptop/tablet (if obd was insuffereble). If you wanted to add injector duty cycle and rpm to the bitstream then nobody would blame you
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Old 04-25-2011, 03:51 PM   #86 (permalink)
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fyi, here is a $2 board that would make a decent isp clip-on (and serial debugging tap)
Freeduino Arduino-compatible Runtime board Rev B
don't forget pins
break away header - male - 40-pin
(and don't forget they go on the bottom of the board where they meet the chip to be programmed)
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Old 04-25-2011, 03:56 PM   #87 (permalink)
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Where can you buy the simple DIY clip in adapter? Also I couldn't find any info about which pins the adapter needed to connect to on the atmel chip.
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Old 04-25-2011, 04:00 PM   #88 (permalink)
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Quote:
Originally Posted by dcb View Post
fyi, here is a $2 board that would make a decent isp clip-on (and serial debugging tap)
Freeduino Arduino-compatible Runtime board Rev B
don't forget pins
break away header - male - 40-pin
(and don't forget they go on the bottom of the board where they meet the chip to be programmed)
Okay so basically the pins would plug into the mpguino socket, and then you would solder those pins to the $2 board? Then you plug the ISP programmer into that 6 pin header on the bottom right of the board?

One question I had about the on board programming, can this be performed when the mpguino is plugged into the car? Or do you have to unplug mpguino from the cars power, so that the chip isn't trying to calculate stuff?

Last edited by steffen707; 04-25-2011 at 04:08 PM..
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Old 04-25-2011, 04:03 PM   #89 (permalink)
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take an arduino pcb board, like the $2 one above

solder pins on the bottom to interface with your chip. make minor adjustments so they all make contact and make sure you install it correctly (or add a fence).

the pins are here:
Arduino - PinMapping168

I would up with pins on 1-3,7-12, 17-22,26-28. I bent them out a tweak then back in on the ends and filed an inside chamfer so it pushes on nicely.

install 6 isp pins on top.

connect programmer, tweak your programming software, enjoy.

Could probably do in car, but easier to bring it in to your computer.

If you use pcb with usb then you can interface with rx/tx as well (pins 2 and 3 are touching)
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Old 04-25-2011, 04:11 PM   #90 (permalink)
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here is a picture of a stripped-down iduino which can clip on for serial(ftdi usb) or isp programming, connected to my clone avrisp.

No socket (or crystal), just pins coming out from the bottom. Everything lines up "naturally" that way.



Edit: of course if you are in a hurry just figure out what goes where by studying the arduino schematic (just worry about the icsp to cpu connections) and bodger something up on protoboard.
http://arduino.cc/en/uploads/Main/ar...-schematic.pdf

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