My Propeller Platform Module

Rsadeika

On Sat I received my Propeller Platform (PP) board from Gadget Gangster, I got the assembled version. I like the the board a lot, has anybody else purchased one? Jon laid out the board quite nicely, and I like the hefty power supply; now I will not have to worry to much when I power it with 12VDC. Good job Jon. Whoever did the soldering of the board also did a very nice job.

I want to get a couple things clarified-
As I look at P28, and P29 header, that can be used as an I2C buss, correct? What are the limitations, since I only see one resistor?

The power header has VIN,V50,V33, and GND connector. Can I bring in a 5VDC, and GND wire to power up the whole board, or does it just provide a 5VDC source to the header on the other side of the board? I looked at the schematic, and could not figure that one out. The other one is the VIN+GND connection, does the on/off switch still control that circuit? I am not an EE, and never claimed to be one [noparse]:)[/noparse]

Are there any "shields" in the works? I guess maybe a propeller+ram expansion "shield", I think there has been some talk about wanting more cogs, i/o, and memory. Maybe a "shield" would be a nice compact way to go. Just an idea.

Ray

Post Edited (Rsadeika) : 10/26/2009 10:53:17 AM GMT

mctrivia

I2c is limited to 8 devices. The eeprom uses address 0 leaving 1-7 available. Some ics have a fixed address like many rtc chips and others have address pins you can tie high or low to set the address.

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Want to make projects and have Gadget Gangster sell them for you? propmod-us_ps_sd and propmod-1x1 are now available for use in your Gadget Gangster Projects.

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Mike Green

Actually, you can have more than 8 I2C devices as long as they are different (have difference device codes). So, you could have 8 EEPROMs and 8 ADCs, all on the same pair of I/O pins.

Rsadeika

Gadget Gangster calls it a module, I called it a board.

Cluso99

For a prop+ram+uSD module see my RamBlade pcb (link in my signature). PCB 2-3 wks away.

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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)
· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm

Nick McClick

I guess I call it a module because it comes with the components - I also offer just the bare board for the module. I'm glad you like the design! I really like the dual row of headers so you can stack modules on top and on bottom.

To answer your questions;

1 - the power switch does control the Vin at the headers - flip off the switch and no Vin at the connector.

2 - I'm pretty sure you can add 5V at the header, but I haven't tried it. Does anyone else know if you can provide a regulated voltage to the output half of a regulator without any problems (if the regulator input isn't connected)?



Currently, there are a few modules;
Propeller Platform Module
LCD UI Module
Prototyper Module

A few more are in production;
Mono LCD and Color LCD touchscreen
DMX IO
Arduino Converter

There are also a few designs 'in the wings'
Picaxe 40 / 28
Video IP

@cluso - I can't actually tell if your RamBlade will connect to the Propeller Platform, are the power connections the same?

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