Build instructions

Resistors

As the lowest profile components these should be fitted first. To fit the lands on the board the legs should be bent hard against the body of the resistor.

 

Color codes

Value

Positions

Type

Before gap

After gap

1K

R4,R6,R7

5% carbon film

Brown-black-red

Gold

2K2

R2

5% carbon film

Red-red-red

Gold

47K

R1

5% carbon film

Yellow-violet-orange

Gold

3R3

R3

1% metal film

Orange-orange-black-silver

Brown

1M

R5

1% metal film

Brown-black-black-yellow

brown

Crystal

The crystal goes in land X1. It is not polarity sensitive.

SIL socket strips.

Best way to fit these is to put them in then slide the board onto the edge of the workbench, then solder the ends and make sure they are flat before soldering the other components.

Ceramic caps and crystal

The two single layer low value capacitors (yellow at least in current kits) go next to the crystal in positions C2 and C3. The other ceramic caps (blue at least in current kits) go in the lands C1, C4, C5, C6, C9 and C11.

Electrolytic caps led and transistor

Watch the polarity! I DONíT want pieces of capacitor flying around the lab! The electrolytic capacitors go in lands C7, C8 and C10. Polarity is marked on the layout diagram and on the PCB itself. The negative legs of the two capacitors should be next to each other. The green LED goes in the land nearer the edge of the board (LD1). The red led goes in the other land (LD2).

 

The transistor should have its centre leg bent slightly in the direction of the rounded side and then be inserted as shown on the diagram. As it is pushed in the leg will bend out further and hold the transistor in the board making it easy to solder. For robustness space between transistor and board should be no more than a couple of millimeters.

 

Sockets

The USB and RJ12 sockets should just clip in and be easy to solder. If you wish you can also solder the clips on the USB socket for extra strength. When doing the USB socket watch the track that runs out through the middle.

 

Optional components

The board has land sites for two Molex connectors. These are not included in the kits and do not need to be fitted to use the programmer with your university supplied microcontroller board. S3 is a 3 pin connector used to program the PIC in the programmer and should be fitted with its tab towards the PIC. S4 is a two pin connector used to power the target circuit and should be fitted with its tab towards the RJ12 socket.

 

IC insertion

The pins on the ICs need to be straightened before insertion. If you are at all unsure about this get a demonstrator to help. Once the pins are straightened insert the IC into the socket. A LOT of force may be needed especially if the pin strips are not quite straight but you MUST make sure all the pins are sitting in the holes before applying said force.

 

Programming

To program the programmer special equipment is needed. See a demonstrator.