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Old Oct 06, 2003, 03:04 AM
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I was afraid of that.
I was trying to translate the comments in the assembly code for the transmitter and noticed some funky things going on.


Dindea
Try this for a Surface mount to Dip
a322-ND
or
a325-ND

Not sure which one.
I found them in an old Digikey catalog.
They might have something other than 20 or 24 pin now.
One is SOIC and the other is SOJ

Billy
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Old Oct 10, 2003, 07:51 PM
40%, 5% whats the diff?
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This may sound like a stupid question but what does the pic programmer do. I feel so stupid.
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Old Oct 10, 2003, 09:04 PM
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I have found out in many years of learning many things that there are no such things as stupid questions!

A PIC chip (microcontroller) is like a very small computer (the insides of one at least). It runs programs much like your computer is running a browser to read this webpage, although it is on a very small scale.

A program is written in different languages (Assembler, C, PICBasic, etc.), then it is COMPILED into code that the PIC uses.

So, a PIC programmer is the hardware interface between your computer and the PIC microcontroller.
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Old Oct 10, 2003, 09:40 PM
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Quote:
Originally posted by billystiltner


Dindea
Try this for a Surface mount to Dip
a322-ND
or
a325-ND

Billy
Those are for too many pins and they might not line up with the PIC pins. I found an 8 pin adapter (A724-ND), but who knows if it lines up?

If you did get this one ($6.97 US), you still have to figure out a way to hold the PIC in place while programming.
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Old Oct 10, 2003, 09:46 PM
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I did find this one. But it was $60 - $70 dollars! Forget it!

I think I am going to use Andy Birkett's method of using a cheap PLCC adapter or Koichi's method.
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Old Oct 11, 2003, 04:53 AM
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I'm using an smd test clip from Digikey (look here), it is item 923655-08-ND. It is connected to my combined programmer and test board which can be switched from being a JDM programmer to being a test board. The test clip is wired in parallel to the 8-pin DIP socket so I can use either a ceramic housing DIP chip with window (erasable) or the OTP SO-8 version. The test clip fits to SN (150mil) and SM (220mil) housings. See the picture.

The test clip is a professional one with gold plated contacts and costs less than 12 US$.

Regards, Jochen
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Old Oct 13, 2003, 12:59 AM
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Koichi Tanaka's Avatar
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mini IR TX flight movie

Push-E was flown in the gym yesterday.
The two-channel mini IR transmitter was used. Please see a movie.

http://www.oyajin.gr.jp/~toko/photo/...014/push-e.ram
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Old Oct 13, 2003, 11:43 AM
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Jochen

Thanks! I was wondering what that clip was! I bet that is the best route to go unless you have the components lying around for the flat package adapter!

Koichi

Great video! I am amazed!
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Old Oct 13, 2003, 02:31 PM
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Koichi,

this model is marvellous, I didn't expect it to fly *so* slow! So we are convinced again to build even lighter the next time ...

Thanks for the video.

Regards, Jochen
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Old Oct 14, 2003, 04:17 PM
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I just received my parts from Digikey.
The order was faxed and I think they got the 12c509 chip wrong.
It is wider I think they sent SM instead of SN? It's ok though it still fits on the PCB layout David made just have to make a few places a bit wider. I have 1 SN chip anyways from microchip.


Koichi
That is a nice flying plane in the video.
My minnow flys as slow as this. I'm working
on IR control for it so it will fly still slower
with lighter weight rx.

I have a question about your mini IR TX. It looks as if you allready have it coded for 3 channels in the assembly code. Am I correct? All I would have to do is add the 3rd variable resistor on the circuit board for 3 channels right?

Billy
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Old Oct 14, 2003, 06:35 PM
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Yes Billy.

This is what I am going to do. Replace the throttle with a 10K pot (hopefully linear) and use the joystick for the rudder and elevator. Like having a mini Focus III!

Koichi said on his website that he put the 4.7K resistor there so he could have a one handed controller and that the Push-E flys great just on throttle and rudder only.

At this post he said "Yes, that's right. The neutral pulse of an elevator is made."
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Old Oct 14, 2003, 06:36 PM
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double post for some reason!
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Old Oct 14, 2003, 08:13 PM
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Billy,

When the elevator is controlled, please modify the resistance of 4.7K in the pot of 10K.

Perhaps the neutral point slips in capacity error of the 0.047uF and error of 10K pots. In that case please modify the value of resistance of 3.3K.

Koichi
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Old Oct 15, 2003, 03:13 PM
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Sorry to hear about your chip mix-up Billy. I haven't ordered anything yet, trying to get the wife to approve the hobby budget!

Dindae
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Old Oct 15, 2003, 05:44 PM
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Thanks Dindea and Koichi.


Dindea
I also got some really really small .1uf caps but this is ok also.
Just means it will be lighter weight.

Your parts list is fine though the errors were in the fax transmission I guess.

I only ordered parts for the JDM programmer, IRXA301-2 w/MAX1595, and mini IR TX. All the parts I recieved are right and the ones that got mixed up you have the right parts on the list it seems. I had the 18pin socket and Dsub connector. but I reckon your part numbers are good for those.


I couldnt get the old lady to approve this plus some motors and stuff from Bob Selman so I had the Digikey order included as a bonus of sorts from some previous work I had done. Whatever I learn in the process about PIC programming will help out in the future with remote telemitry devices.

Thanks for compiling the list.
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