These are my notes on the
Cessna 182 RTF from Hobby King.
I had to replace the XT60 connectors on the charger and battery with Deans connectors to suit the plane. According to the guy at Hobby Habit XT60 is mainly a US thing. I also replaced the alligator clips on the charger input with a molex connector so I can power it from my PC.
The manual is not much use as it's missing several vital details (for a novice anyway).
- The ESC powers the receiver directly, not with a separate cable, so it plugs only into channel 3. The battery port on the receiver is used with the bind plug to rebind to the transmitter.
- The receiver & servo pinouts are undocumented, see the following table & attached image.
- There was not much glue and it smelt like PVA so I used some of that.
- The receiver is quite programmable using the USB cable ($3 from HK) using this software ($2).
- By default switch A selects between single (toward you) & double (away) rate and switch B kills the throttle (towards you = no throttle).
- The transmitter channel assignment is shown in the picture, all of the sticks have centre springs except for channel 3.
- ESC "manual" (Skyartec BMC-25A)
- I got a Turnigy ESC programming card on the assumption the plane had a Turnigy ESC but it has Skyartec, card seems to work OK though.
- The motor is a Skyartec WZ12 Outrunner 1530KV which has a shaft size of 3mm.
- The propeller is 8x6 and needs a small hub (10mm) for the spinner to fit on
- The curvy side of the prop should face forward (typically this means the writing should face forward).
- The first time you use the ESC you have to set the throttle range, check the ESC manual (search for "throttle range setting")
Technical
- The receiver has what I think is an Amiccom A7105?
- There is also a 24C02B which should be a 256byte I2C? EEPROM, although I can't determine the maker (probably .cn cloner).
- There is a mystery chip which drives the PWM outputs, not sure what it is yet, hopefully a CD4017 so I can MitM? the PPM.
- Servo & PPM output signals are at 3.3V.
- The signal pin on the battery connector looks like a PPM output.
Simulation
- Install PPJoy (special pre-release version)
- Windows Vista and later need to be run in test signing mode for the PPJoy driver.
- I needed to reboot before the PPjoy joystick showed up
- Note it doesn't show up in Devices & Printers but you can run control /name Microsoft.GameControllers
- Get T6sim
- ClearView ($40) and FMS (free) seem to be the only sims which work with a Windows joystick.
Pictures
Wiring
| |
ESC |
Servo |
|---|
| Signal |
White |
Orange |
| Power |
Red |
Red |
| Ground |
Black |
Brown |
Channel assignment
| Channel |
Function |
|---|
| 1 |
Aileron |
| 2 |
Elevator |
| 3 |
Throttle |
| 4 |
Rudder |
| 5 |
Flaps |
| 6 |
Unused |
--
DanielOConnor - 22 Jun 2011

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