EihiS

January 24, 2016

Sky REX drone ( item 350254 , gifi asia )

Filed under: Hobby Electronics — Tags: , , , — admin @ 11:22 am

There is not much informations about that engine on the WWW.
I shot the manual for anybody needs,before it disappears .(see below)
From the manual, it fully looks like a X5C clone.
Even complete sentences look like the one we found into the X5C user’s manual.
As for the inside board, it does not look like the X5C-10 board.

The inside of the engine is quite difficult to show.
The 4 gears ( brushed motor has a 9 teeth gear) blocs are glued to the plastic top of the engine, and the 4 motor wire pairs are soldered on te board : to disassemble the thing, one has to cut one pair of wires before he can turn back to plastic bottom and access to the electronics.

The boards presents a X297 RX chip and an invensense MPU6052C chip for gyro/accel sensing.

The 4 motor blocs does not use bearings ( wich means the motors gears will not last long if intensively used..)

inside board of the sky rex

inside board of the sky rex

I didn’t cut the wires for now, so here is a shot of the board has it can be seen by twisting the 2 plastic covers at the maximum possible :

Gyro recalibration procedure is ok as written in the user manual.
But the TX/RX pairing procedure does not work with the model i have.
For the pairing to work, i have to power the drone first, then only , start the RC transmitter and do the ‘up’ / ‘down’ left lever procedure.(the user’s manual says one has to power on the transmitter first..)

However, even with this method, it sometimes fail to pair : than, power-off TX, unplug, replug the drone’s battery, re- power on the TX, and try again…

This drone definetely miss a power/off button on it.

front cover sky rex gifi

front cover sky rex gifi

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inside the Sky Hawk Eye HM1315 S

Filed under: Hobby Electronics, Mechanics — Tags: , , , , , — admin @ 9:52 am

..Burned a brushed motor of the HM1315S SKY HAWKEYE.

The inside board uses an ARM mpu and a MPU6050 ( 3 axis accel + 3 axis gyro  )
The link : here

The motors gears use ball bearings.

EDIT : i received the spare motors from www.gearbest.com .

Since i finally completely removed the board from it’s housing, i can add one more picture ( 5mm squared paper at the backplane )

a 6.5 x 6.5 cm board

a 6.5 x 6.5 cm board

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419716939937510582097494459230781640
628620899862803482534211706798214808

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