10-09-2024, 07:24 PM
The Radiomaster and ELRS teams continue to collaborate and are on a roll. There is now a new version of ELRS Gemini, called Gemini X, even before many people have adopted plain elrs Gemini, and before most people have become accustomed to standard elrs.
In Jan 2024 I wanted to try Gemini and I purchased the BetaFPV SuperG Nano ELRS 2.4G Module for my Radiomaster tx. I initially flew in gemini switch mode, but now I fly 2 drones in full gemini mode with the purchase of several betaflight superD diversity rxs. I am recording flight logs and will eventually use the data to examine whether gemini elrs is better than standard elrs in terms of avoiding low values of RSSI and link quality and the need for dynamic power jumps. My strong impression so far is that gemini elrs is better than standard elrs. However I mostly compare gemini to setups with elrs rxs that are not full diversity rxs, which is not a fair comparison. One problem I've encountered: if you fly quads you cannot easily slip in a different rx, you may have to disassemble the drone and connect the rx to the flight controller by soldering the 4 leads.
Gemini involves transmitting on 2 frequencies, using a rx that is really 2 rxs, in the effort to ensure the tx commands have the best possible chance of arriving at the aircraft. The ideas behind gemini X are to take gemini a bit further to include the ability to have one tx emission on 2.4 Ghz, and the other on 900 mhz, and the flexibility to change this to 2 2.4 Ghz emissions (separated a little in frequency), or 2 900 mhz emissions. There are many new modes that are designed to deal with high interference situations, or racing competitions, for long range and other scenarios.
It seems like too much too soon after the remarkable success of elrs, but the speed of innovation may be difficult to control, either too slow or too fast.
Here are some links to the initial impressions of the usual suspects talking about gemini X.
The best review is by Bardwell: https://www.youtube.com/watch?v=ETBLRYyp7zk
Radiomaster Nomad & DBR4 Receiver - ExpressLRS Gemini X For Under $45
Mads Tech https://www.youtube.com/watch?v=agHDOIvezI0
Radiomaster ELRS Nomad Gemini Xrossband
Andrew Newton
https://www.youtube.com/watch?v=Dxiz1BkVm3U
RadioMaster NOMAD : ELRS Gemini X is here - any combo of 2.4Ghz and 868/915Mhz using two antennas!
Painless360
https://www.youtube.com/watch?v=g3OgJ8lCoIk
In Jan 2024 I wanted to try Gemini and I purchased the BetaFPV SuperG Nano ELRS 2.4G Module for my Radiomaster tx. I initially flew in gemini switch mode, but now I fly 2 drones in full gemini mode with the purchase of several betaflight superD diversity rxs. I am recording flight logs and will eventually use the data to examine whether gemini elrs is better than standard elrs in terms of avoiding low values of RSSI and link quality and the need for dynamic power jumps. My strong impression so far is that gemini elrs is better than standard elrs. However I mostly compare gemini to setups with elrs rxs that are not full diversity rxs, which is not a fair comparison. One problem I've encountered: if you fly quads you cannot easily slip in a different rx, you may have to disassemble the drone and connect the rx to the flight controller by soldering the 4 leads.
Gemini involves transmitting on 2 frequencies, using a rx that is really 2 rxs, in the effort to ensure the tx commands have the best possible chance of arriving at the aircraft. The ideas behind gemini X are to take gemini a bit further to include the ability to have one tx emission on 2.4 Ghz, and the other on 900 mhz, and the flexibility to change this to 2 2.4 Ghz emissions (separated a little in frequency), or 2 900 mhz emissions. There are many new modes that are designed to deal with high interference situations, or racing competitions, for long range and other scenarios.
It seems like too much too soon after the remarkable success of elrs, but the speed of innovation may be difficult to control, either too slow or too fast.
Here are some links to the initial impressions of the usual suspects talking about gemini X.
The best review is by Bardwell: https://www.youtube.com/watch?v=ETBLRYyp7zk
Radiomaster Nomad & DBR4 Receiver - ExpressLRS Gemini X For Under $45
Mads Tech https://www.youtube.com/watch?v=agHDOIvezI0
Radiomaster ELRS Nomad Gemini Xrossband
Andrew Newton
https://www.youtube.com/watch?v=Dxiz1BkVm3U
RadioMaster NOMAD : ELRS Gemini X is here - any combo of 2.4Ghz and 868/915Mhz using two antennas!
Painless360
https://www.youtube.com/watch?v=g3OgJ8lCoIk