A self-help group for anyone having problems or indeed anybody that can help with FrSKY products.
Just bought some of these for my more expensive models and have a query re its use with a ESC that incorporates BEC.
Specifically the instruction manual indicates that power supplies must not be connected to CH1-8, however the FRSKY video shows the esc and hence power supply being successfully connected to CH3.
Is it a case of confusing instructions?
You need to disconnect the power feed from the ESC. I have an RB10 working in just that configuration. Two separate receiver batteries on the power inputs. It may be possible to feed the power from the Bec to one of the input connections, i.e. only connect the signal wire to the output, and the red and black wires to one power input. You would still need a battery on the other input as a backup otherwise there's not much point in having the RB10 unless it's just for the radio link redundancy. For the BEC to be the preferred source of power it would need to have higher voltage set than the battery. You could do this using a LiFe battery, with the BEC set at 7. 2V. I have considered using this configuration for a large motor glider but I haven't tried it yet. I have two models using it conventionally with a couple of Lithium Ion batteries each. Not Lipos they are not so reliable as good LiIo cells. As more expensive models tend to be larger the weight penalty is insignificant. There is the added bonus that there is less dissipation in the ESC which will mean it runs slightly cooler.
Note that I am not a distributor or dealer this is just based on my own experience. I am a professional electronics engineer though.
Thanks for the info it is much appreciated. It made it clear that I need to disable the esc bec and power servos via 2 separate rx batteries. As you say, the small additional weight will not be an issue.
@ianshilling glad it helped. Frsky kit is mostly very good but their documentation sometimes leaves something to be desired!
@ianshilling glad it helped. Frsky kit is mostly very good but their documentation sometimes leaves something to be desired!
Learn to love Github:
https://github.com/opentx/opentx
Doesn't always solve problems in lowest levels (ACCESS-radio-Rx) but a font of knowledge on higher levels.
For lower levels, learn to love RCGroups eg Important Firmware Update - ACCESS 2.1.x and New FrSky RX's - RX4R, RX6R, G-RX6
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