Monday, June 15, 2009

Boeing 787 Airliner

Windrider Boeing 787 1.6m wing span with hue fuselage!
Powered by Twin 700W EDF. Thrust 1.53g/W.


Spektrumizing Futaba T7CHP

A very good deal :USD110 for a spektrum modeule + AR7000 receiver. A single AR7000 cost more than US$100 in Hong Kong.
Espritmodel ships it fast and arrive in HK in less than 6 days.

Open up my legacy FF7. T7CHP has no module. Instead the FM board is inside the case. The 3 wires at the middle of the board are what we need:

red-GND, brown-Vcc, black- PPM signal.

The 4 wires at the bottom of the FM board only connects to the Tranier port and can be discarded.

Pinout for the spektrum module (with pin socket at the low bottom and facing you, count from the left: 1- PPM, 2-Vcc, 3- GND ) , pin 4 and 5 is not connected.

The specktrum module can be placed inside the case.
The FM antenna is removed and the spektrum strut is inserted with some modification of the case.
The end hole is cut/ enlarged to adapt the provided strut.
Now, the legacy FM T7CHP becomes 2.4G !

Remember to connect the SMA antenna connector before switching on the transmitter. Or you will toast the regulator within seconds!

Thanks to Horizon Hobby for their splendid customer service. They repair my burnt module as I forgot to connect the SMA connector before switching it on.

Tuesday, June 09, 2009

Freewing F35 Turbine like Jet

FPV plane#2 R.I.P.

Spektrum AR7000 out of radio range 1.4km , despite good video transmitter range with patch antenna. Plane held in fail safe mode in yaw gliding position and lost control for a total of 3 mintues till it crashed 400m off shore.

I should have a 2.4G reflector on hand.