Technical, Techniques, Hints, and Tips > The "Black Arts!" ( Electrics & Electronics )

'....the motors go into full reverse……but why?'

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C-3PO:
From the Planet T7 manual

PLANET 7 FAILSAFE
The Planet 7 2.4GHz radio system has an easy to operate built in programmable failsafe system. Channel
No:1 (throttle channel) can be programmed to return to its preset position if the signal is lost. Channels No:
2,3 & 4 return the their to neutral position if the signal is lost.

Channel No:1
To set your throttle failsafe-preset position simply make sure the throttle stick is in the idle position then turn on your
transmitter. Now turn on the receiver.

Once the receivers LED has stopped flashing and is solid you have set the failsafe. It is
always recommended to have the failsafe set in the lowest position possible

Hope that helps/works

Regards
C-3PO

ChrisH1981:

--- Quote from: C-3PO on May 27, 2022, 10:43:11 am ---From the Planet T7 manual

PLANET 7 FAILSAFE
The Planet 7 2.4GHz radio system has an easy to operate built in programmable failsafe system. Channel
No:1 (throttle channel) can be programmed to return to its preset position if the signal is lost. Channels No:
2,3 & 4 return the their to neutral position if the signal is lost.

Channel No:1
To set your throttle failsafe-preset position simply make sure the throttle stick is in the idle position then turn on your
transmitter. Now turn on the receiver.

Once the receivers LED has stopped flashing and is solid you have set the failsafe. It is
always recommended to have the failsafe set in the lowest position possible

Hope that helps/works

Regards
C-3PO

--- End quote ---


Thanks! Yes I follow this proceedure as the throttle stick is already centred due to the spring.


Another scenario could be at play here....If the main batteries are plugged in BEFORE powering on the receiver, could this produce the symptoms im experiencing? Reason being, when main batteries are connected and I first power on the receiver, the motors run full speed (presumably in reverse) for 1-2 seconds before stopping (this is when boat is on the lakeside prior to launch)

C-3PO:
Try the following.

1. Temporarily disconnect the power to the ESC
2. Set TX throttle stick to mid position ( likely to be in that position due to spring) and power on TX
3. Power on RX only (NO ESC) and observe RX flashing light - wait until it stops flashing.
4. Power off RX
5. Power off TX
6. Cross fingers :)


7. Reconnect ESC to power supply (with power switch off)
8. Power on TX (throttle mid stick)
9. Power on RX and ESC

Hopefully the motor will not run at startup, check throttle works forward and reverse and motors stop mid stick

Then with motor running (stick say half throttle),  power off TX and hopefully motors should stop

Regards
C-3PO

ChrisH1981:

--- Quote from: C-3PO on May 27, 2022, 11:11:43 am ---Try the following.

1. Temporarily disconnect the power to the ESC
2. Set TX throttle stick to mid position ( likely to be in that position due to spring) and power on TX
3. Power on RX only and observe RX flashing light - wait until it stops flashing.
4. Power off RX
5. Power off TX
6. Cross fingers :)


7. Reconnect ESC to power supply (with power switch off)
8. Power on TX (throttle mid stick)
9. Power on RX and ESC

Hopefully the motor will not run at startup, check throttle works forward and reverse and motors stop mid stick

Then with motor running (stick say half throttle),  power off TX and hopefully motors should stop

Regards
C-3PO

--- End quote ---


Thanks...good advice, I will give it a try  :-))

Capt Podge:
... and, if you haven't already done so, make sure Tx trim tabs are set in neutral position.  :-)


Ray.

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