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DT001 Rev C -
Overlay in PDF format http://www.dontronics.com/pdf/dtovl002.pdf
The Real Hardware Assembly Instructions Start by clicking here:
The same questions are asked over and over, so this little list has been put together at the head of this file in an attempt to stop these questions. This project doesn't take any great electronic knowledge or soldering skills to put together, but we don't recommend you take it on as a first project. The rush of people wanting to burn Sony Playstation chips with little or no knowledge of electronics or have no soldering experience, should be looking for an alternative assembled and tested unit. Having said that, we believe this is a great kit for the programming of PICmicro chips and development using the Simmstick platform, and we now have thousands of satisfied users to prove it..
Please Note **** If you are building
the DT001 just as a programmer,
you don't need everything installed.
In fact, if you install the MAX-232 chip, the programmer section may
not work at all, as this is a development platform and has many features.
Q: Having assembled DT001 & DT101 programer kit and tested, I am confused about green TX led being on always when powered up, is this normal?
A: If you install the parts required for RS-232 comms, then yes it is.Q: Will the DT001 Board program a PIC16F84 chip?
A: Yes, I have gone out of my way to get drivers written in DOS, Windows and NT to do just this, thanks to Nigel Goodwin and others. I haven't purchased a PIC16C84 for a very long time now, and you may have trouble actually getting one. Programming differences are minor.Q: Do I have to do any link changes on the DT001 board to program an 84 chip?
A: No.
There is a Chat group for Simmstick. I strongly suggest you "JOIN" the group and send any questions there if you are having problems. Thousands of people have now built DT001 and have it running.
I'll repeat that again.
There is a Chat group for
Simmstick. I strongly suggest you "JOIN" the group and send any
questions there if you are having problems. Thousands of people have now built
DT001 and have it running.
Full Hardware assembly instructions for the DT001 SimmStickTM Cheap Programmer, power supply, and development board.
Novice Explanation...
All soldering is done on the solder side of the board. All components are fitted from the component side of the board. If you have trouble understanding this, you may need assistance to assemble this board. I am very happy to assist in an E-mail message if I can, but I can't build or fault find to any great degree via an E-mail message.
End Of Novice Section...
This board has many features and functions and you may choose to add only the components required for your final project.
The parts list has additional comments added, so read through it in conjunction with these assembly instructions.
The Text Overlay on the component side of the board makes it very simple to assemble the DT001 board.
I advise you to install all components starting with the lowest profile (height) first. I.E.: All resistors first. If you were to solder in the Connectors or 4PDT switch first, you will find it awkward to then fit the smaller items easily.
For 'All' installations, solder in the full list of components as given in the Main Board Components: list.
Watch out for the polarity of the Electrolytic Capacitors. These must be soldered into the board the correct way around. The positive end of the Caps is shown on the circuit and board overlay.
When you solder in your 7805 regulator, it can be soldered in allowing for a bolt and/or heat sink to be fitted at this position. Even if you don't install a heat sink now, you may need one later on. I bolted a heat sink to mine, soldered it in position, then removed it. A standard small heat sink can be used. Just make sure you mount it with the bulk of it over hanging the side of the board.
Install your LEDs with the cathodes as shown on the overlay. (Cathodes to the bottom of the board). The cathode end is also found by the flat spot on the side of the case, and also it's the shortest leg.
Programmer Parts
If you are using the boards as a programmer, solder in the full list of components as given in the Programmer Parts list.
If you are programming only SimmSticks, then you don't need the 18 pin ZIF socket or 10 pin header J1.
The ZIF socket programs a suitable DIP device directly in the socket.
The Hardware Hints file will show you
how to use a machine pin socket, then add a ZIF socket later.
The 10 pin header is used to program a target board that has a matching 10 pin header. This 10 pin header is the Dr. Russ Reiss pinout.
Provision is made for Reset and Boot Switches. The Reset will reset any CPU connected to pin 8 of the SimmStickTM bus.
The Boot switch is my version of Robin Abbott's Boot link which I found rather awkward. This is connected to pin 11 of the SimmStickTM bus.
Both these switches connect to ground via 330 ohm resistors.
Most of the other components require no real explanation, so here is a quick rundown on the remaining board options.
SimmStickTM Bus.
Slot 1 is switched via the 4PDT switch, and acts as a program/run switch for slot 1 only. Jumpers can be used to disable this feature. Dual connectors at .3" centers or single 30 pin Simm Sockets can be fitted to the board at user selected spaces. Female 30 pin headers can also be installed. These should be available from all SimmStickTM Distributors.
Slot 1 is now the only programming slot. Was slots 1 and 2 on previous version boards. Did this to avoid confusion. Also if a 30 pin female programming header is required, this can be done with the DT204 board.
Programming and Reset Switch Orientation: Confused?
Result of User Feedback 2-Sep-98
The 4PDT switch doesn't have a pin 1 marked on it. Pin 1 was designated so that the schematic makes sense with the overlay. You can solder the switch in either of the two ways it will fit as the center position is the common.
The Reset and Boot Hat key type switches are designed to fit the Reset and Boot positions and can be soldered in either way they will fit as the board artwork is connected to opposite corners of the switches. Unless there is a switch type that I am unaware of, the corners always make the connection correctly.
SimmStickTM Bus Expansion.
J3 is provided to allow the main bus signals to be extended to other outboard
circuits using male and female pin headers.
DonTronics Relay Bus:
This mates with my Relay board and is a 34 pin (2 by 17) male header block. Can
be used for other board interconnections.
Serial Communications
A complete RS-232 to TTL converter, DB-9 connector, and status monitor. This
connects to the Serial In and Serial Out pins of the bus. Two spare gates are
available for additional handshaking if required.
Watch out for the polarity of the Electrolytic Capacitors. These must be soldered into the board the correct way around. The positive end of the Caps is shown on the circuit and board overlay.
Additional PWR, +5V and GND Posts.
We have added two single grounds posts, one power and one +5V post for
connection to a CRO or any other test gear. You may choose to solder a wire loop
into these positions. Two can be found at each end of the DB-25 connector, and
two up the Bus expansion end of the board.
Regulator Heatsink
The correct Heat Sink type will fit the board, but it will have a portion of it hanging over the edge. This shouldn't be a problem unless you want to mount the whole thing in a case. I really don't think this is an end user product that requires the heat sink to fit within the boundaries of the board. if it is, then you will need to manufacture a suitable heat sink to allow heat dissipation and fit that special case.