Troubleshooting

CHAPTER 4: LEDs 77

Figure 4-27 The stripboard with all its links

Step 5. Solder the Remaining Components

Next, solder the LED, capacitor (which can be laid on its side as shown in Figure 4-29), and finally the LEDs and connectors to the battery clip.

That’s it. Now it’s time for the moment of truth. Before you plug it in, do a very careful inspection for any shorts on the underside of the board.

If everything seems in order, connect the battery clip to the battery.

Troubleshooting

If it does not work, immediately unplug it and go back though and check everything, especially that the LEDs, IC, and capacitor are the correct way around. Also check that the batteries are okay.

Figure 4-28 The stripboard with resistors in place

Figure 4-29 The LED flasher on the stripboard