Ralph Wu's Posts

Posted by Ralph Wu on September 9, 2014 at 9:54pm

This SimonK ESC built in upgrade port make you configure and upgrade firmware easier.

Posted by Ralph Wu on May 29, 2014 at 9:00pm

A new APM 2.6 clone in about same size of OpenPilot CC3D is available in following website.

It seems fit in small quad like 250.

Posted by Ralph Wu on December 2, 2013 at 5:00am

I am testing the alpha version of APM Planner 2.0 running natively on Ubuntu Linux 12.04. It runs much smoother and most functions are working.

Posted by Ralph Wu on September 23, 2013 at 10:00am

Paparazzi Apogee is new generation of Paparazzi Autopilot

STMicroelectronics STM32F405RGT6 Cortex M4 168MHz processor featuring a Floating point unit (FPU), up to 192k of RAM and 1024k of FLASH.
9(6) DOF integrated IMU MPU-9150(6050) based
1 x Barometer/altimeter MPL3115A2 (I2C, MPU slave capability)
1 x MicroSD card slot, 4 bit SDIO interface (high speed data logging)
1 x USB : DFU mode (download) or USB storage (direct access to MicroSD card)
6 x Servo PWM outputs
1 x R/C receiver PPM frame input
1 x R/C receiver serial input with inverter (Futaba S.BUS, Spektrum, etc.)
3 x UART
2 x I²C bus
1 x SPI bus
RTC with backup capacitor
SWD(ARM download/debug interface)
4 x Auxiliary I/O (General Purpose and/or ADC and/or servo PWM)
5v / 1.5A switching power supply (input voltage range 5.5V min → 17.0v max)
3.3v / 1A linear regulator
1 x 5v / 500mA power switch
4 x status LEDs
10.4 grams (0.37 oz)
53 x 25mm (2.1" x 0.98"), shares the same external dimensions and mounting points as UmarimLite
4 layers PCB design

It is available at following link.