Steps to solder components in order for RBT.1
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Please look the board over carefully and read the instructions and parts list to familiarize yourself with the 

assembly procedure before you begin. Please also familiarize yourself with transistor orientation: looking 

at the front (flat side), the three leads are, left to right: emitter, base, collector. A diode has a + and - 

side, and IC's are marked on one end with a small indented "notch". The IC sockets are also notched.  

Electrolytic (cylindrical shape) capacitors have a + & - side .

Solder all components on the bottom of the board when possible.

U1 - 18 pin IC socket
 
R7, R8, R9 - 470K resistors

R10, R11, R12 - 10K resistors

ICSP 5 - pin header (optional)

LED2 - RGB led - the orientation is NOT marked. When the board is viewed with the printing right side up, the cathode is second from left.

R13, R14, R15, R16 - 220 ohm resistors

Q7, Q8, Q9 - These are paired with the IR LEDs, the long lead is the anode (+) 
The clear led is the IR LED, the dark led is the phototransistor (Q's) The IR (clear) led on the right side is marked wrong polarity (+ should be on the left)

Six pin header, between R16 & relay2 (optional)

R2, R3, R4, R5, R6 - 10K resistors

Q1, Q2, Q3, Q4, Q5, Q6 - 2N3904 NPN transistors

Six pin connector (M2+, M2-, M1+, M1-, DCV, GND)

B1 - Piezo buzzer

Relay1, Relay2, Relay3, Relay4

C1 - 10uF, 16V capacitor

C2 - .01uF (103) capacitor

C3, C4 - .47uF, 50V capacitor

P1 - 1M potentiometer (105)

U2 - 8 pin IC socket 

MIC - electret microphone

LED1 - green led

R1 - 470 ohm resistor

R17, R18 - 1K resistor

D1 - 1N4001 diode

7805 - 5V regulator

S1 - slider switch

9V battery holder

Use super glue to attach the battery holder to the board.