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Step 6Let's Solder
At this point, you might want to fire up the soldering iron and get your components out.
We need:
The 100uf Capacitor
Blue LED
33k Resistor
470 ohm Resistor
555 Timer
NPN Transistor (PNP will not work)
Our freshly etched board
The rest is easy. Place components making sure to keep polarity in mind. The top left pin with the circle next to it is pin one on the 555 timer. Both the capacitor and the LED have one long lead and one short lead. The long lead is the annode which is the positive side and the cathode is the shorter side.
Push the leads through the holes and bend them slightly on the other side to prevent them from falling out.
Solder away and power it up.
Wait... I forgot to add hole for power wires.
Actually I just forgot to drill them.
Hook up your 9v battery and apply positive to pin 8 and negative to pin 1. After a few seconds the LED should fade up, hold, and then fade back down. Lather, rinse, repeat.
http://www.youtube.com/watch?v=o9f3BoPnGu0
We need:
The 100uf Capacitor
Blue LED
33k Resistor
470 ohm Resistor
555 Timer
NPN Transistor (PNP will not work)
Our freshly etched board
The rest is easy. Place components making sure to keep polarity in mind. The top left pin with the circle next to it is pin one on the 555 timer. Both the capacitor and the LED have one long lead and one short lead. The long lead is the annode which is the positive side and the cathode is the shorter side.
Push the leads through the holes and bend them slightly on the other side to prevent them from falling out.
Solder away and power it up.
Wait... I forgot to add hole for power wires.
Actually I just forgot to drill them.
Hook up your 9v battery and apply positive to pin 8 and negative to pin 1. After a few seconds the LED should fade up, hold, and then fade back down. Lather, rinse, repeat.
http://www.youtube.com/watch?v=o9f3BoPnGu0
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I have a question though :P , I will hook my circuit up to a 3.3v power supply. And I also use a 3.3v led, so what is my schematic for this?
Sorry I'm a bit of a noob when it comes to figuring out value's :(
But thanks for the instructions :)