Re: Klondike - 16 chip ASIC Open Source Board

Quote from: cardcomm on August 03, 2013, 04:10:24 PM

Quote from: BkkCoins on August 02, 2013, 06:50:13 AM

And for anyone who wants I'll have a PIC16LF1459 breadboard adapters in the K1 batch too. Allows mounting the PIC with USB and power reg. in a breadboard. Size is 16mm (0.6") x 50mm (2"). I just made these up to fill a void in the order and allow me to have a platform for doing the PIC programming without messing up K16 boards, and they'll be handy for future prototyping projects.

Thanks for the great update

I'll want one or two of the breadboard adapters. Will you be adding them to the store?

Yes, I'll add them soon but there is a limited qty. of 6 for sale. I want to keep some for my own use. If there is demand I can add more to a future board run but that will take a while. I did three versions initially and I'll cut them out and sell as separate boards for $2 each.

I've included an image link below as I don't want this to take over discussion here too much. PM me with questions. I've added a new repo at http://github.com/bkkcoins/picngo

Three versions - from left to right, picngo-sm, picngo-sb, picngo-qm. First two use the SS PIC, last one the QFN. Middle one has PCB USB connector. Board is 1.6mm so it needs a thickener to fit snug in a USB slot, but advantage no cable. The other two have pads for a SMD mini-B connector.

All have pads for:

2 decoupling caps on VDD.
Pullup resistors on I2C pins.
LED and current limit resistor.
Ferrite beads on USB lines (can be bridged to bypass).
MCP1700 3.3V reg with 2 caps.
2x 10 pin headers (each side).
1x 5 pin header (bottom ICSP).
2x 3 pin jumper headers.

Left Jumper selects LED connection - VDD or RC0 or N/C.
Right Jumper selects VDD connection - USB or USB via LDO or N/C (external)

This is kind of a work in progress - test boards for a possible educational kit with project guide book later on (like in 6 months maybe).

PCB Layout, 2 layer, 16mm x 50mm board.