Microcontroller - Ramsey Electronics FM100B Instruction Manual

H. MICROCONTROLLER
Although the microcontroller interconnects and controls the entire circuit. This
section deals with the parts which are fairly exclusive to the controller itself.
We'll wait until later to install the switches because they get in the way while
we're installing the rest of the parts. Note that components C6, R8, and X1 are
not installed (these holes are provided for future use only if needed should a
different microcontroller be used). The current version of U1 does not require
or operate with these three parts installed so leave these positions open.
1H. Install C17, a 0.1 uF ceramic capacitor (marked 104).
2H Install R5, a 22K ohm resistor (red-red-orange).
3H. Install C4, a 10 pF ceramic capacitor (marked 10).
4H. Install C12, a 0.001 uF ceramic capacitor (marked 102).
5H. Install C5, a 0.01 uF ceramic capacitor (marked 103).
6H. Install R17, a 1K ohm stand-up resistor (brown-black-red).
7H. Install Q1, a 2N3904 NPN transistor. Note the flat side for installation.
8H. Install R4, a 10K ohm resistor (brown-black-orange).
9H. Install C10, a 0.1 uF ceramic capacitor (marked 104).
10H. Install R12, a 10 ohm resistor (brown-black-black).
11H. Install SP1, the mini speaker. Make sure the + terminal (labeled on
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