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Forum Index : Microcontroller and PC projects : Beta Testers Wanted
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
OK, ramped RPM up to 115k2 - no problems at all. My first little code: [code] SetPin 14,DOUT:Pin(14)=0 Do Pulse 14,100 Pause 200 Loop [/code] This, or a version of this, is just about the first code I do with ANY microcontroller - start simple, just by blinking an LED. Now, time to play with some other features like I2C and serial etc. Smoke makes things work. When the smoke gets out, it stops! |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
QUESTION: With Microchip making all their controllers in just about any package you can think of(you can even purchase the raw chip if you are REALLY short on space, but you have to order at least 5,000 chips to qualify for that), I am wondering if I can use the TQFP version. If I have deciphered the plethora of Microchip part numbers, then I think this would be the PIC32MX150F128D-50I/PT. Yes? No? This should be the 10mm TQFP version, with 0.8mm pin spacing - not to impossible to hand-solder. Smoke makes things work. When the smoke gets out, it stops! |
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BobD Guru  Joined: 07/12/2011 Location: AustraliaPosts: 935 |
What is the question? Do you want to know if you can use the 44 pin chip as a sub for the 28 pin chip or are you asking if it is the correct part number? It seems that it is the correct PN. I did a Google and got this. Much easier than wading thru the MicroChip datasheet. |
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| BobD Guru Joined: 07/12/2011 Location: AustraliaPosts: 935 |
If small size is what you are after then what about using the 28 pin SSOP chip at 10 x 8 mm. However, the pins are slightly closer together. |
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vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
I think the question is if Geoff will add support for that chip... My guess is that additional features will not be supported if there is no space left for the interpreter. Even for digital and analog operations on the extra pins (I guess)... Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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| BobD Guru Joined: 07/12/2011 Location: AustraliaPosts: 935 |
I'm back and it looks OK to me. |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
I'm just thinking that if the chip die is essentially the same between different package types, therefore I SHOULD be able to program the TQFP with MMBasic, and use it as though it was a 28 pin device. By matching up the pin descriptions, I would still only have the equavalent of the 28 pin device, but on the 44 pin TQFP. I am not interested in the extra pins on the TQPF(although that would be nice), just curiouos if I could put MMBasic on the TQFP device, and use it like a 28 DIL or SOIC. Yes, there is the SSOP, but it's pin spacing is just too small at 0.65mm  Smoke makes things work. When the smoke gets out, it stops! |
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| vasi Guru Joined: 23/03/2007 Location: RomaniaPosts: 1697 |
Firmware for PIC18F2550 works for 4550, don't know if is the same for PIC32... Hobbit name: Togo Toadfoot of Frogmorton Elvish name: Mablung Miriel Beyound Arduino Lang |
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Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3200 |
The firmware should run on other variants of the PIC32MX150/250 family such as the 44 pin TQFP version but (as Grogster pointed out) the pin numbers would need to be mapped to the larger chip and the extra pins will not be available in MMBasic. For your interest Grogster, this is now the longest thread in the history of "Microcontroller and PC projects" on the Backshed. I must admit that I am amazed at how popular the Micromite is. Geoff Geoff Graham - http://geoffg.net |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
Wow, Geoff - that's amazing. I was actually thinking of posting a new thread, asking what is the thread with the highest number of pages, but you have answered that for me. People have been using the PICAXE for years, but firmware revisions are closed-source, and slow in coming. Even the initial release of the MM chip will be a PICAXE beater in terms of what it can do and it's price, so you're onto a winner here I think. Twenty THREE pages - flippin' 'eck! 
EDIT: My 600th post. Yay! EDIT: [quote] For your interest Grogster, this is now the longest thread in the history of "Microcontroller and PC projects" on the Backshed. I must admit that I am amazed at how popular the Micromite is.[/quote] ...and it has not even been "Officially" released yet. For a Beta release, 23 pages of thread is really totally stunning - A testament, I think, to the interest in this new device. Smoke makes things work. When the smoke gets out, it stops! |
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atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
That's not what we are doing in our jobs, its just for fun and relaxing. In this Case it was anything else but relaxing and we blindly believed the data sheet. 
But we had some beers and remembered the old apple I soldering times, the 70 and the 80 years, good old music......
Thanks, Geoff to follow our question to put this into the docu with bold letters. This will save many poor souls. This will make i2c easy! Dietmar |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
Ahhhh, Hallo Wenn der I2C wird dem Beinknochen verbunden ist, und die SPI ist mit dem .... Nein, das ist völlig falsch, sorry. (If the I2C is connected to the leg-bone, and the SPI is connected to the.... No. That is totally wrong, sorry.) Smoke makes things work. When the smoke gets out, it stops! |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9311 |
Schauen Sie sich meine Lieblingsmusik VIDEOS Thread in OTHER STUFF - Sie vielleicht etwas, die zu Ihrem Musikgeschmack anspricht finden ... (Check out my FAVOURITE MUSIC VIDEOS thread in OTHER STUFF - you might find something that appeals to your musical tastes...) Smoke makes things work. When the smoke gets out, it stops! |
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elproducts Senior Member  Joined: 19/06/2011 Location: United StatesPosts: 282 |
Just a few minor suggestions: Extra "use" not needed. the final bit is the read/write indicator. Otherwise, excellent summary. www.elproducts.com |
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| elproducts Senior Member Joined: 19/06/2011 Location: United StatesPosts: 282 |
Couldn't agree more. And its just getting started. Wait until people start sharing routines for driving LCDs, Servos, I2C, SPI, etc. Add Geoff's VT100 chip, that he posted is coming, and you don't even need a PC to program it. www.elproducts.com |
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| Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3200 |
Thanks for the updates to the manual. So far all the bugs found have been in the manual (a good sign). Geoff Geoff Graham - http://geoffg.net |
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| elproducts Senior Member Joined: 19/06/2011 Location: United StatesPosts: 282 |
I want to make an Arduino style board for MicroMite so I can use Arduino shields with it. Here the pinout arrangement I've come up with. Does anybody see a conflict? I repeat the I2C so they line up with the new and old Arduino arrangement. I also placed every other feature (SPI, PWM, Serial) at the pins that match up to Arduino. The MicroMite pinout is scattered but easily corrected with a series of variable names for the pin numbers. i.e. A0 = 2 I replaced the Vref with a 3.3v connection so that header has both ground and 3.3v (I never see anybody use Vref). I also had an extra open pin on the Analog header so I added a ground which is handy for ADC connections. 
www.elproducts.com |
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| viscomjim Guru Joined: 08/01/2014 Location: United StatesPosts: 925 |
This arduino style board would be awesome for uMite. Keep us posted! |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3819 |
Cross-check with Olimex boards in case something triggers a useful thought. John |
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