Whistler Group Cruisader Quick start guide

Cruisader
Receiver Schematic

Description/Operation
• The MICRF007 is a single chip ASK/OOK (ON-OFF Keyed) Receiver IC for remote wireless
applications, employing Micrel’s latest QwikRadiotm technology. This device is a true “antenna-in
to data-out” monolithic device. All RF and IF tuning is accomplished automatically within the IC
which eliminates manual tuning, and reduces production costs. The result is a highly reliable yet
extremely low cost solution. The MICRF007 is an enhanced version of the MICRF002 and
MICRF011. The MICRF007 is a conventional superhetrodyne receiver, with an (internal) Local
oscillator fixed at a single frequency based on an external reference crystal or clock. As with any
conventional superhetrodyne reciever, the transmit frequency must be accurately controlled,
generally with a crystal or SAW (Surface Acoustic Wave) resonator.
• 2-Byte communication data is received by the microprocessor consisting of: First byte is an
intelligent header and second byte is data.
• The header information controls whether the LED blinks in Bright Mode or Dim Mode.
• The Data information controls the rate of blinking and duration of blinking.
• Once blinking, if no additional control signal is received from the transmitter, the LED will cease
blinking after approximately 8 seconds.

Header
• 0xA5 Blink Command – DIM Mode
• 0x5A Blink Command – Bright Mode
• 1010 0101 = 5A
• 0101 1010 = A5
LSB

Command/Data
• 0000 1000 = Button Press “Blink Once”
• 0000 0100 = Button Press “Blink Twice”
• 0000 1010 = Blink 2 seconds
• 0000 0010 = Stop Blinking
• 0000 1100 = Signal Strength “Zero”
• 1000 1100 = Signal Strength “One”
• 0100 1100 = Signal Strength “Two”
• 1110 1100 = Signal Strength “Seven”
• 1001 1100 = Signal Strength “Nine”

Bill of Materials
• Item Quantity Reference Designator Part
• 1 2 BT1 Battery, CR2450
• 2 1 SW1 Slide Switch, PC mount
• 3 1 R1 Resistor, 4.7K
•41R2 Resistor,470
• 5 1 Y1 Crystal, 6.7458 MHz
• 6 3 C1, C2, C3 Cap, 1uF
• 7 1 C4 Cap, 4.7 uF
• 8 1 U1 IC, MICRF007
• 9 1 Q1 Regulator, MCP1700
• 10 1 U2 IC, PIC12C675
• 11 1 Q2 IC, Reset, MCP111
• 12 1 R5 Resistor, 62K
• 13 1 R6 Resistor, 10K
• 14 1 R3 Resistor, 330
• 15 1 R4 Resistor, 56K
• 16 1 C5 Cap, 4.7uF
• 17 1 C6 Cap, 0.1uF
• 18 1 LED1 LED, Red, 3mm