Well, this is my first instruct able (yay) so, here it goes! This is a
Dark Detector circuit that utilizes 1) the a stable oscillator that you
can make with a 555 to drive a Pietro and 2) the reset threshold of the chip.
step 1Step One: Gather the Parts
_Parts_ 555 Timer IC (I
used a Texas Instruments NE555P, you can use pretty much any other
brand) A breadboard (doesn't have to be big) Some wire; bare or stripped
(yo…
step 2Step Two: Put the timer in
Stick the timer in the breadboard so that the notch and/or circle is facing to the left.
step 3Step Three: Stick the negative and positive rails in.
If
you haven't worked with circuits before, here comes the (semi) tricky
part. Connect the 1st pin with the negative rail. Then, connect the 8th
pin with the positive rai…
step 4Step Four: Connect pins 2 and 6...
...with a piece of wire. Again, if you need help identifying the pins, consult the pin chart.
step 5Step Five: Stick (yes stick) the 100k resistor inConnect the 2nd and 6th pin with it.
step 6Step 6: Put (not stick) the 1 megaohm resistor in it's placeIt's place would be connecting the 2nd pin to the 3rd pin.
step 7Step Seven: Stick the capacitor in
Put it in pins one and two. If you have an electrolytic capacitor, make sure that the polarity is correct.
step 8Step Eight: Put the Cds cell in
Make ''sure'' that it connects pin 1 and pin 4.
step 9Step Nine: The Hard Part (for some)
Well, you've
gotten this far. So, pat yourself on the back and get ready. Look
carefully at the picture. If that doesn't help, read below _The Hard
Part_ Take a pie…
