DX8 G2 with Brain 2 Mini
Building a Protos 380. Will be using a DX8 Gen 2 and cannot find a definitive answer on what RX I need . If I mount a SPM4649T and connect to the Brain 2 Mini as instructed is that all I will need to be able to bind to the DX8 for flight control or will that only give me telemetry? What I'm asking is do I need the SPM4649T and another Spektrum RX in order to complete the setup ? If the SPM4649T is all needed, should I use Spektrum Remote Sats off the Brain2 or is it not necessary on such a small model ?
The SPM4659 receiver alone is enough to fly the model, have telemetry and use the integration menus.
Note: The SPM4649 receiver must be updated to the latest firmware version. I don't know if the SPM4659 receivers are already produced and supplied with the latest firmware. It also depends on how long the retailer where you buy the receiver has it on the shelves.
In order to update the firmware (but also to read the serial number of the receiver and be able to register it on the Spektrum website in your "My Spektrum" area to activate the warranty), you need the SPMA3065 adapter cable that you may already have for other purposes otherwise I recommend you to order it with the receiver.
You can also add one or two satellites to provide additional redundancy and security, both in terms of the radio signal and as a second independent physical connection to different connectors of the Brain2 controller. I remind you that the carbon frames and the metal parts act as a shield to the signal attenuating it. During the flight in certain positions of the model, the antennas of the SPM4649 receiver could be shielded from the transmitter from the model frame, for this reasons adding a satellite (on a class 380 is more than enough) on the opposite side of the antennas of the SPM4649 receiver you can reach greater distances in every position of the model.
Consider that a satellite takes up little space, adds little weight and consumes very little battery power even on small models like a 380.
It also depends on:
- If you have a very sharp view and with the 380 you intend to fly very far away from you (maybe even just by mistake because you lose model orientation) or you are sure not to stray too far.
- If your transmitter is for the European market, it has reduced transmission power. If your transmitter is for the non-European market, it has 10 times more transmission power.
NOTE: If you decide to add a satellite to the SPM4649 receiver, the satellite must be DSMX in order to be binded with the SPM4649 receiver that use DSMX protocol. (Spektrum and Horizon Hobby have long since removed from the catalog the DSM2 satellites, and I make this point just because there are also equivalent satellites on the market not Spektrum as well as a large second-hand market of old DSM2 satellites.).
Thank you. I ordered the 4659t and one satellite. I had already ordered before you responded so I did not get the SPMA3065 . That is the USB interface correct ? Someone else responded and stated the following. Could you take a look and see if what they are saying is fact or do I still need the SPMA3065 ?
"The SPM4649T gives you a bi-directional SRXL connection to the Brain2 mini and a supported ESC to a telemetry down-link to the DX8 and it allows the DX8 to open a screen and make adjustments back to the Brain2 without the need for Bluetooth / USB or a PC."
With the firmware updates for the SPM4649 receiver, Spektrum had solved various problems in the telemetry we had reported two years ago (2017) during the development (for example, it generated false alarms at the poweron) and added some features such as telemetry of the RSSI value.
You can read the changelog released by Spektrum by downloading it from the My Spektrum area.
For your convenience I enclose the Spektrum changelog downloaded with our account.
If you encounter problems reported and resolved in the changelog and want to remove them, you will need to update the firmware of the SPM4649 receiver and to do so you will need the SPM3065.