P8XBlade2

A tiny Propeller Development Board

P8XBlade2a

The P8XBlade2 is the first member in my latest family of tiny Propeller Based Microprocessor boards.

Features:

  • PCB 0.78"x1.28" (19.8x32.5mm) 1.0mm thick Blue ENIG (gold finish)
  • P8X32A Parallax Propeller Microprocessor
  • 12MHz crystal (96MHz clock frequency)
  • EEPROM 64KB (preprogrammed) with WE link
  • microSD socket (preprogrammed microSD card optional extra) on pins P12..P15
  • All 32 I/O pins, Reset, 5Vin, 3V3 out and Gnd brought out to 0.1" pitch pads
  • Onboard 3V3 voltage regulator
  • Onboard (linkable) transistor reset circuit
  • Onboard series resistors (linkable 0/68R/136R) and 3V6 zener diode protection on both P30 & P31 lines
  • Requires 5VDC Regulated power
  • Able to use (optional) cheap USB-Serial CP2102 6-pin (~US$1.25) connection to PC (does not require PropPlug)
  • Optional (free) my Prop OS (propeller operating system)

The P8XBlade2 can be used as the basis of any Propeller Development System.

 

Together with a microSD card formatted with FAT16/32 and loaded with my free Prop OS (Propeller Operating System with similar commands to the old PC DOS and CPM), the Prop will boot into the OS, or run a user program. Programs can be copied directly to the microSD card on your PC/laptop, or you can use an (optional) USB-Serial converter or PropPlug to download your program directly to the Propeller or EEPROM (requires WE link enabled).

 

You can use an (optional) USB-Serial CP2102 6pin converter (~$1.25) instead of a PropPlug to download programs to the Propeller/EEPROM because the required transistor reset circuit is built on the P8XBlade2.

http://www.ebay.com/itm/6Pin-USB-2-0-to-TTL-UART-Module-Serial-Converter-CP2102-STC-Replace-Ft232-Module-/401092508083?hash=item5d62f9f9b3:g:2aQAAOSw0kNXhzR7

 

 

 

P8XBlade2 PCB Picture
P8XBlade2 Schematic. Note the Reset Circuit requires a link to operate, as does the WE link to write to EEPROM.
P8XBlade2 Schematic. Note the Reset Circuit requires a link to operate, as does the WE link to write to EEPROM.
Connecting USB-Serial CP2102 6pin to the P8XBlade2
Connecting USB-Serial CP2102 6pin to the P8XBlade2
P8XBlade2 Dimensions and Connections
P8XBlade2 Dimensions and Connections
My Prop OS (Propeller Operating System) sample display with available commands
My Prop OS (Propeller Operating System) sample display with available commands

Further information is available on the Parallax Forums, including schematics and free PropOS download including source...

P8XBlade2:  http://forums.parallax.com/discussion/163052/cluso-s-p8xblade2-tiny-p8x32a-propeller-development-board-released#latest

PropOS:  http://forums.parallax.com/discussion/138251/a-propeller-os-that-can-run-on-multiple-hardware/p1