|
You’ll need to review these
two photos (as well as the schematic on the next page) to determine the
best way to build your BLINKIE. The photo on the left
illustrates Ned’s very neat wiring, as seen from the bottom of the vector board. There is not much of a critical nature
here, except remember that the CK722s should not be installed until all the
soldering has been completed to the transistor sockets. The photo above is a side view of the
“transistor end” of the Vector board.
You can see one of the blue CK722s mounted in its socket. The resistor (on the right) is one of
the 100 ohm resistors shown in the schematic and the large black item in
the middle is one of the 47uF electrolytic capacitors. Ned used 1 watt 100 ohm resistors and ½ watt for the 47K
timing resistors. The capacitors
are rated at 25V. These values are
all commonly available, but substitution with what’s “on hand” is part of the
fun.
|
