MICRO BIKE LIGHT
Price - Stock
1. Check your P.C.Board carefully for damage to the tracks. A Circuit Tester or a multimeter will help check that there are no broken tracks.
2. Select the flashing pattern you desire and it's resistor placement. Bend the legs of the resistor with long-nose pliers to match its holes and push it into place against the surface of the board. Remember that the drawing is looking at the PLAIN side with the tracks away from you. When in place, bend the legs sideways a bit to stop the resistors from falling out. Solder in place - see Soldering Technique
3. Insert the IC socket. Be careful to ensure
all legs protrude through the holoes in the PCB. Solder all legs of the
4. Four PCB pins are located at the locations shown. Solder in place.
5. The five LED's can now be inserted and soldered. These are polarised so care needs to be taken to insert them in the correct orientation.
6. The battery holder is connected to the PCB pins as
shown - note the polarity. Solder to the PCB pins. If you want to shorten the wires to the battery holder, cut them to an appropriate length, strip approximatley 5mm of insulation and tin the bare wires before soldering -
7. The switch can be installed on the pcb pins and soldered.
8. Insert the microcontroller chip with the locating dot as per the diagram.
9. Insert batteries and
Troubleshooting if necessary will involve careful
checking of locations and polarity of components. Re-solder all joints and check
to make sure you have not bridged across
between any two adjacent component legs. The end
of a broken hacksaw blade sharpened on
an emery wheel is a good tool for cleaning between soldered joints.
The heart of this kit is the PIC12F675 which is a programmable Integrated Circuit. This chip is probrammed to display the flashing patterns.
View the PIC 12F675 Datasheet
Contact CdS electronics