Custom PCB Boards

Here are ExpressPCB "Mini Board" PCB board files for the Propeller chip either from the forum or my own.

	Note: I've found that ExpressPCB is the lowest cost PCB service with fast turn around of low quantity. I highly recommend the "Mini Board" service. For $51 and ~$10 shipping you can have 3 boards delivered in less than 1 week.
	"Mini Board" service requires the PCB to be exactly 3.8"x2.5" with only two layers (no silkscreen, no resist).
	The also have an OK schematic program that will assist finding problems with your circuit.
	However, these programs are nowhere as complete as PcbExpress, another service I've used. The main things missing are auto routing and true circuit checking. But, ExpressPCB is very quick to learn and easy to use, so I'd highly recommend it to hobbyists.
	I've seen that some people use this software to make their own boards by taking screenshots of the layers and then printing them out for transfer...

PropEKG by Ray Allen

Status: Built and tested.

A couple of minor cosmetic changes made in this version.

For DIP package.

ExpressPCB PCB file: PropDipEKG11.zip

Mini-Marx Controller by Ray Allen

Status: Built and tested LCD, MAX1270, and AD5206 successfully somehow! See major errors below. (although board actually drawn for AD5204, see below).

	Major error is that 5V trace going over to the MAX1270 is connected to the 3.3V LDO output trace on the bottom layer. Somehow, the board was actually working for a while in this condition! But, I don't know why because this puts 5V on the Prop... Using razor blade to remove wide bottom layer trace from LDO to Prop...
	Another Major mistake is that the LM1086 LDO regulators have the big heat sink tab as Vout, instead of GND (like the TLV2217)... Board actually works with LM1086 as long as you don't push down on the regulator so that the tab touches the board (or screw the regulator down). Going to fix this by Dremel tooling a break around the ground planes of both bolt holes on the back of the board. Or, could use lower current TLV2217 instead...
	Another mistake is that the 2.1 mm power connector is drawn upside down... So, the middle (side) hole should be on top instead of on bottom (in the picture below). But, this mistake was easily fixed by drilling a new hole. As this pin isn't used for anything, it could have been snipped and not even connected.
	Another mistake is that the board is actually wired for the AD5204 instead of AD5206. Since all I have is AD5206, I partially removed 3 traces and added 2 jumpers to make it work... Pin 4 should connect to ground instead of P22. Pin 5 should connect to P22 instead of ground. Pin 7 should connect to P20 instead of +3.3VDC. Pin 9 should connect to GND instead of P20.

For DIP package. Meant to drive Sparkfun's "Huge" LCD, a quad digital pot and an 8-channel ADC.

ExpressPCB PCB file: PropDip6.zip

PROPELLER MULTI-CONTROLLER by Chris Savage (Parallax)

	ExpressPCB PCB and Schematic files: Propeller Multi-Controller Board.zip
	Status: Built and tested.
	For DIP package. Note that board is drawn upside down.

	Source Page: http://www.parallax.com/Resources/ParallaxProjects/Propeller/tabid/664/Default.aspx

MiniProp by Ken Peterson

	For QFP package. Two boards on one mini-board.
	Status: Built and tested.

	Forum thread: http://forums.parallax.com/forums/default.aspx?f=25&m=290690
	ExpressPCB PCB and Schematic files: Miniprop_I.zip

Propeller Express by Newzed

	For DIP package. Note that board is drawn upside down.
	Status: Not built or tested.

	Forum thread: http://forums.parallax.com/forums/default.aspx?f=25&m=139856
	ExpressPCB PCB file: Propeller_Express_Rev_F.zip

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