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PICList Thread
'PIC16F87x proto boards.'
1999\07\21@204659 by Don McKenzie

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PIC16F87x proto boards.

We are just completing the final touches to a new PIC16F87x proto
board, and would appreciate feedback. In fact, if there is no further
feedback at this point, the design will be final.

See:
http://www.dontronics.com/dt106.html

Features:
28, and 40 pin footprints to suit the new 87x PICmicro flash devices.
Alternative RS-232 or RS-485 Comms
78L05 Regulator
Eeprom. Same pinout for MicroChip 24LCxx family.
8570 Ram. can be used as second Eeprom location.

Provision for power up/reset circuit which allows both
a cmos and open collector Brown Out circuit chips to be
fitted if the user chooses to use one, as the 40 pin
footprints match older PICmicro devices also.

Provision for LCD 14/16 pin header, and mounting holes
for selected 1 and 2 line displays, plus contrast pot.

Provision for Crystal (and Caps), or Resonator Oscillator.
A 40 pin header (40 pin dip compatible)
DS-1302 Real Time Clock.
10 Pin Programming header.
SimmStick compatible:
which means it is a Load/Run operation for Flash Micros
if used in conjunction with a suitable programming platform.

Don McKenzie  spam_OUTdonTakeThisOuTspamdontronics.com http://www.dontronics.com

Don's Download Dungeon:   http://www.dontronics.com/download.html
Australian Electronics Ring http://www.dontronics.com/aering.html
Win $500USD Cash. Micro design contest:  http://www.simmstick.com


'PIC16F87x Proto boards.'
1999\08\24@174137 by Don McKenzie
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DonTronics mistake, your gain!

Just got my new dt106 boards and have found a serious problem. The Simm
Socket edge connector is solder masked when it shouldn't be. This means
it can't be used readily as a SimmStick. Sure it is a stand alone CPU
board with a 40 pin I/O header and a programming header, so it isn't at
the point of being completely useless.

You can read about it and the problem at:
http://www.dontronics.com/dt106.html

And for users that are prepared to take these DT106 boards as is, then I
am selling them at 3 for $20AUD.
Now this becomes a nicely priced PIC16F87x proto board. And I have
hundreds of them.
That's around $4.25USD each, posted to anywhere in the world.

These boards have provision for:
28, and 40 pin footprints to suit all current PICmicro flash PIC1687x
devices.
Alternative RS-232 or RS-485 Comms
78L05 Regulator
Eeprom. Same pinout for MicroChip 24LCxx family.
8570 Ram. can be used as second Eeprom location.
Provision for power up/reset circuit which allows both a cmos and open
collector Brown Out circuit chips to be fitted if the user chooses to
use one, as the 40 pin footprints match older PICmicro devices also.
Provision for LCD 14/16 pin header, and mounting holes for selected 1
and 2 line displays, plus contrast pot.
Provision for Crystal (and Caps), or Resonator Oscillator.
A 40 pin header (40 pin dip compatible) at the top edge of the board.
DS-1302 Real Time Clock.
10 pin programming header that matches the programming header on the
DT001 board.

The simply are *** NOT*** SimmStick compatible.

Don McKenzie  .....donKILLspamspam@spam@dontronics.com http://www.dontronics.com

Don's Download Dungeon:   http://www.dontronics.com/download.html
Australian Electronics Ring http://www.dontronics.com/aering.html
Win $500USD Cash. Micro design contest:  http://www.simmstick.com

1999\08\30@050003 by Don McKenzie

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I posted the message below the dotted line 5 days ago to the PIClist and
Sisuser list, as well as some news groups and various other key spots.

In that time I have sold 25% of the boards, and news has just reached me
that they are working fine as an 877 proto board, programming via the 10
pin header.

At this rate, they will only be around for another 15 days, so I felt I
better let my "list" friends have a go at them first.

Don...

==================================================
DonTronics mistake, your gain!

Just got my new dt106 boards and have found a serious problem. The Simm
Socket edge connector is solder masked when it shouldn't be. This means
it can't be used readily as a SimmStick. Sure it is a stand alone CPU
board with a 40 pin I/O header and a programming header, so it isn't at
the point of being completely useless.

You can read about it and the problem at:
http://www.dontronics.com/dt106.html

And for users that are prepared to take these DT106 boards as is, then I
am selling them at 3 for $20AUD.
Now this becomes a nicely priced PIC16F87x proto board. And I have
hundreds of them.
That's around $4.25USD each, posted to anywhere in the world.

These boards have provision for:
28, and 40 pin footprints to suit all current PICmicro flash PIC1687x
devices.
Alternative RS-232 or RS-485 Comms
78L05 Regulator
Eeprom. Same pinout for MicroChip 24LCxx family.
8570 Ram. can be used as second Eeprom location.
Provision for power up/reset circuit which allows both a cmos and open
collector Brown Out circuit chips to be fitted if the user chooses to
use one, as the 40 pin footprints match older PICmicro devices also.
Provision for LCD 14/16 pin header, and mounting holes for selected 1
and 2 line displays, plus contrast pot.
Provision for Crystal (and Caps), or Resonator Oscillator.
A 40 pin header (40 pin dip compatible) at the top edge of the board.
DS-1302 Real Time Clock.
10 pin programming header that matches the programming header on the
DT001 board.

The simply are *** NOT*** SimmStick compatible.

Don McKenzie  donspamKILLspamdontronics.com http://www.dontronics.com

Don's Download Dungeon:   http://www.dontronics.com/download.html
Australian Electronics Ring http://www.dontronics.com/aering.html
Win $500USD Cash. Micro design contest:  http://www.simmstick.com


'pic16f87x proto boards.'
1999\09\03@180846 by Don McKenzie
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As so many people on these lists have purchased the dt106smp 87x proto
boards seen at:
http://www.dontronics.com/dt106.html
you should be aware of the following.

During our final schematic check out and hardware test (also known as
Don's Friday night beer drinking session), we found a schematic error
that gave us an incorrect net list and final artwork fault on the
dt106smp boards.

If you wish to use the 10 pin header on the DT106SMP boards as an
isolate and program/run board, you will need to isolate pin 11 of the 40
pin chip, as VCC and VDD are connected together via the chip itself. To
do this you will need to cut the track that runs on the component side
of the board to pin 11. With pin 11 left now unconnected, all is fine.
You can also bend the pin so it is outside the socket. This has been
fixed on the final board.

One of the problems with two supply pins and net names. :-)
And boy, did this one take some finding.

We were able to prove the load/run feature of the board in slot one of a
dt001 board, and also as a stand alone unit, so it could be used as an
emulator for any 87x target board

Also proved rs-232 comms.

The new board design will go to the fab man this weekend.

Don McKenzie  .....donKILLspamspam.....dontronics.com http://www.dontronics.com

Don's Download Dungeon:   http://www.dontronics.com/download.html
Australian Electronics Ring http://www.dontronics.com/aering.html
Win $500USD Cash. Micro design contest:  http://www.simmstick.com

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