Double DIPper - Two props in a DIP40 module
Tubular
Posts: 4,717
This half finished design packs two props into a DIP40 pack. The "Media Prop" can be totally dedicated to graphics and/or sound output. Importantly this board has a resistor in series with each pin, allowing it to drive VGA, TV or be used in 5V circuits etc
Both props have these support chips
* EEPROM
* uSD card or Dataflash (dual footprint)
* ADC / PSoc / MSP430 / PIC shadowing the 16 I/O in each prop (as yet undecided)
* something else that fits up to TSSOP 16 (perhaps RTC, but RS232 or Accelerometer are also a possibility
There is also a "Stamp Mode" which involves flipping the board upside down, and making a couple of links, and a surgical separation (chisel). In this mode the board is much shorter but still retains the VGA and DB9 Serial connector.
I'm trying Micro USB for the first time. Wish me luck!
So, what should I do with the spare TSSOP footprint?
Both props have these support chips
* EEPROM
* uSD card or Dataflash (dual footprint)
* ADC / PSoc / MSP430 / PIC shadowing the 16 I/O in each prop (as yet undecided)
* something else that fits up to TSSOP 16 (perhaps RTC, but RS232 or Accelerometer are also a possibility
There is also a "Stamp Mode" which involves flipping the board upside down, and making a couple of links, and a surgical separation (chisel). In this mode the board is much shorter but still retains the VGA and DB9 Serial connector.
I'm trying Micro USB for the first time. Wish me luck!
So, what should I do with the spare TSSOP footprint?
1039 x 859 - 53K
Comments
Cheers [noparse]:)[/noparse]
--Steve
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Propeller Pages: Propeller JVM
-Phil
Also I forgot to mention there will be a daughterboard with coin cell that sits at the media prop end. This is more about reinforcing those slim D connectors but also might permit RTC backup
See link below, this is the one I have in mind there are others (perhaps with lower MOQ)
Post Edited (Tubular) : 6/24/2010 12:38:56 AM GMT
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Links to other interesting threads:
· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz
Hi Bill,
Its just the usual time and certainty of direction. I reached the point where I figured "hey this is going to work", but am now exploring several possible options for the "co processor" and the other spare IC.
I looked into a PIC24FJ64GB002, which would have been perfect as it has USB OTG and 10 bit ADC for about $3, but it doesn't seem to be physically available in TSSOP28 despite some docs listing this option.
So the most likely option is a cypress PSoC, CY8C24423 or -633. These are interesting chips in themselves, have up to 14 bit ADC, and can interface to and be programmed by the prop over I2C . And instead of the TSSOP14 I think I'll just have a SOIC-8 pad, which can be used for RTC, FRAM, second EEPROM, SRAM etc.
So in summary, features in the "prop" mode
- Two Props in a DIP40 layout for ease of "upgrade" of an existing design
- "Main Prop" drives the P0~P7 and P24~P31 end
- "Media Prop" drives P8~P15 (AV) and/or P16~P23 (VGA)
- Each Prop has independent supporting chips
' 64K EEPROM (under)
' MicroSD or Dataflash (top)
' PSoC CY8C24423/633, shadowing all 16 IO pins of each prop, up to 12ch of 14bit analog inputs. Up to 4 analog outputs
' SOIC8 pad can be used for one I2C device - RTC, FRAM, second EEPROM, SRAM, etc
- Independent series resistor for every pin allows 5v compatibility, RS232 direct receive, VGA or TV drive etc
- 6Mhz Osc module driving both props in sync
- Keyboard and Mouse connection via Micro USB connectors (KB and MS must have PS2 compatibility, many do).
- Programming port and power via separate Micro USB
- DE15 standard VGA connection using slim connector
- DB9F for serial or analog I/O using slim connector
- Small LDO reg to drop 5v USB down to 3v3 (under)
- 2.2" x 1.1" pcb approx
- optional CR2032 coin cell daughter board sits between 2 D connectors
features in the "stamp" mode
- Single Prop (Media Prop) by flipping upside down and making a couple of links
- Supporting chips as above
- 3 wire serial achievable (transistors under)
- Most/all pins 5v compatible depending on series resistors installed
- 1.3" x 1.1" pcb approx
- optional CR2032 coin cell daughter board to power RTC
Also...
- Each set of 8 pins has VSS and VDD at either end for ease of pullups, R2R ladders for DDC output, or jumpering for VGA/TV output etc.
- Micro USB to USB A Female cables are available. I have found a few at $5~$8, but should be able to find some cheaper.
- Analogs covering same 4 pins that Arduino Mini uses
Once its a bit further advanced I'll put together a "benefits" analysis, but this should give you a good idea
cheers
tubular
Have You --- Part name and place to but that VGA connectors.
I have on my boards footprints to that ones --- But not found Parts to BUY --- Have only ones that I dissect from OLD PC's.
Regards
Christoffer J
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Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it·as simple as·possible yet as versatile as posible.
Sapieha
The two main sources I use are Kycon (available through Mouser), and 4uconnector.com.
here's the kycon page domino2.kycon.com/website/dsubs.html
for 4uconnector.com its well worth registering, because it will display pricing on all items. Up to 10 samples are available at good prices, but they can (sometimes) take weeks or months to get the samples together to ship.
tubular
Thanks You.
And good looking PCB You made.
Regards
Christoffer J
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Nothing is impossible, there are only different degrees of difficulty.
For every stupid question there is at least one intelligent answer.
Don't guess - ask instead.
If you don't ask you won't know.
If your gonna construct something, make it·as simple as·possible yet as versatile as posible.
Sapieha
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:
· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz
I'll be sure to keep you on the loop with these.
They will be loaded something like 8 to a panel, so there is some room for variants too. I'll contact you before I load the panels to make sure what you'd like is accommodated.
regards
tubular
that's very cool. The included ADC will attract a lot of more people to the propeller
did you do some raw pricecalculating
I mean can you say the price will be more close to $50 or more close to $150?
best regards
Stefan
Patience is a Virtue.. It's a shame I'm not virtuous!!
KPR
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I always have someone watching my back.
I'm in discussions with the board assemblers... won't be long now...
tubular