144 MHz, 1 kW Power Amplifier

This project is a simple solid state 1kW power amplifier that is used to read DC voltage and SWR on reverse/forward meters. The device has a watercooling that separates the transistor from the radiator. However, it automatically shuts down when the temperature is relatively high. This linear amplifier uses the Freescale’s rf power LDMOS transistor that is capable of handling 10:1 VSWR and characterized with series equivalent large-signal impedance parameters. This can be used in single ended or in push pull configuration. read more...

Components	***
MRF6VP3091NBR5 RF LDMOS Transistor	S330Ω Resistor (2 units)
1kΩ Variable Resistor	68Ω Resistor
10Ω Resistor	50Ω Resistor
22kΩ Thermistor	10kΩ Thermistor
Step-up Transformer	6V Zener Diode
68pF Capacitor	1000pF Capacitor (4 units)
2.2uF Capacitor (2 units)	220uF Capacitor (2 units)
470pF Capacitor (8 units)	35pF Capacitor
15pF Capacitor	200nH Inductor (2 units)

Wireless Tilt Mouse

Wireless tilt mouse allows the control of mouse cursor on the PC screen through tilting of the board. It specifically uses the Freescale’s FXLN8371QR1 accelerometer, which is a family of 3-axis, low-power, low-g, analog output accelerometers that consist of an acceleration sensor along with a CMOS signal conditioning and control ASIC in a 3x3x1 mm QFN package. The analog outputs for the X, Y, and Z axes are internally compensated for zero-g offset and sensitivity, and then buffered to the output pads.The outputs have a fixed zero-g offset of 0.75V, irrespective of the VDD supply voltage. The bandwidth of the output signal for each axis may be independently adjusted using external capacitors. This handheld mouse device measures its tilt and then wirelessly transmits the data to a base unit. It is connected to a PC through a USB cable and can be recognized by certain modern computers as an actual mouse. read more...

Components	***
XBee Regulated	Accelerometer
5V Voltage Regulator	USB Mini
EasyUSB Module	***

Nerf Gun

Nerf guns have completely overwhelmed people at all ages from the fact that pulling the trigger does not mean causing harm to anybody. It is an amazing project that anyone could easily practice their skills in shooting. This Nerf darts uses the Freescale's FRDM-K64F, an ultra-low-cost development platform that is packed with a lot of peripherals to enable rapid prototyping, including a 6-axis digital accelerometer and magnetometer to create full eCompass capabilities, a tri-colored LED and 2 user push-buttons for direct interaction and feedback, expansion memory with a microSD card slot, and connectivity options using onboard ethernet port and headers for use with bluetooth and 2.4GHz radio add-on modules. read more...

Components	***
FRDM-K64F Demo Board	Servo Motor (2 units)
Battery Elimination Circuit (BEC)	Gun Motor
Relay	Switch