# RC Glider config: redundant ESC/UBEC, redundant FrSky 2.4GHz/900Hz, voltage monitoring via A2

> RC glider setup notes: redundant ESC/UBEC with Schottky diodes, dual FrSky 2.4 GHz + R9 900 MHz receivers, Taranis X9E pinout, voltage telemetry on A2.

- URL: https://guillaumeplayground.net/rc-glider-config-redundant-esc-ubec-redundant-frsky-2-4ghz-900hz/
- Author: Guillaume (https://guillaumeplayground.net/about/)
- Published: 2019-09-03
- Updated: 2022-09-25
- Section: RC & builds
- Topics: f3x glider, rc
- Source: Guillaume playground

(my reminders…)

#### ESC/UBEC or dual ubec redundancy

[![RC Glider config – ESC/UBEC or dual ubec redundancy](https://guillaumeplayground.net/wp-content/uploads/2019/09/Bus-tie-operation.png)](https://guillaumeplayground.net/?attachment_id=609)

2 Diodes schottky 5A.

[![RC Glider config – ESC/UBEC or dual ubec redundancy](https://guillaumeplayground.net/wp-content/uploads/2019/09/scrot-2019-09-05_773x864.png)](https://guillaumeplayground.net/wp-content/uploads/2019/09/scrot-2019-09-05_773x864.png)

#### Taranis X9E – Using G-RX8 + R9 MM/Mini redundancy

Taranis X9e pinout:

-   ANT → S.port input (can also be used to update a RX or a S.port sensor)
-   GND → GND
-   BAT → Connected to the internal NiMh battery (be careful with the max voltage when using a 3S LiPo)
-   +6V → Heartbeat: it is in fact an UART input port which can be used for a wireless buddy box (you need to plug a CPPM or S.bus signal coming from a RX bind with the student radio).
-   PPM → PPM output used for any external RF module.

To upgrade the firmware of a receiver:

1.  Connect the 3 first pins to the same pins of the receiver (SPort – Bat \[+\] – GND)
2.  Taranis: Connect USB, upload your firmware file to the sdcard, Go to radio setup menu, Page SDCard, file, flash external device

Long and detailed:

[Video: How to flash firmware FRSky Taranis Receiver RX x8r x6r](https://www.youtube.com/embed/4Rf3-IQCppw?feature=oembed)

#### G-RX8: Digital servo -> switch to HighSpeed mode (HS)

Connect CH5 and CH6 signal pins with the included jumper before Binding, the receiver will enter HS mode.The receiver will enter into FS mode without the jumper connected.

#### G-RX8: PWM mode for Ch7-8

Connect CH1 and CH2 signal pins with the included jumper before Binding.

#### Redundancy: 2.4GHz with telemetry (Master) – r9 MM/Mini as backup (slave)

![RC Glider config – Redundancy: 2.4GHz with telemetry (Master) – r9 MM/Mini as backup (slave)](https://guillaumeplayground.net/wp-content/uploads/2019/09/scrot-2019-09-03_448x205.png)

![RC Glider config – Redundancy: 2.4GHz with telemetry (Master) – r9 MM/Mini as backup (slave)](https://guillaumeplayground.net/wp-content/uploads/2019/09/r9mm.jpg)

1.  Bind each module 2.4/800 with the taranis TX modules (internal, r9)
2.  Connect G-RX8 S.BUS-In to R9 MM/Mini S.Bus-Out.

G-RX8: lipo voltage monitoring with AIN2 input

4s / 3s / 2s lipo: select the appropriate R1/R2 to not exceed the 3.3v AIN2.

On openTx (the radio), you just have to configure the appropriate voltage factor to display the correct current value of the lipo. Easy and accurate.

![RC Glider config – Redundancy: 2.4GHz with telemetry (Master) – r9 MM/Mini as backup (slave)](https://guillaumeplayground.net/wp-content/uploads/2020/07/Diagram1.png)

![RC Glider config – Redundancy: 2.4GHz with telemetry (Master) – r9 MM/Mini as backup (slave)](https://guillaumeplayground.net/wp-content/uploads/2020/07/full-1024x770.jpg)

Wing servo frame

[Parametric wing servo frame for KST / MKS / BlueBird servos](https://www.thingiverse.com/thing:3850977)

[Github Parametric wing servo frame for KST / MKS / BlueBird servos](https://github.com/guillaumef/wing-servo-frame/)

#### **MPX Connector** (personal config)

![Aileron (S1) & Flap (S2) Redundant mpx pin for +/-, Y-Cables to both servos](https://guillaumeplayground.net/wp-content/uploads/2020/02/MPX.jpeg)
*Aileron (S1) & Flap (S2)Redundant mpx pin for +/-, Y-Cables to both servos*

![Fuselage male connector Splitted S1-S2 to have redundant +/-](https://guillaumeplayground.net/wp-content/uploads/2020/02/41T2SMO8WGL.jpg)
*Fuselage male connectorSplitted S1-S2 to have redundant +/-*

![L||R wing mode: 8 pins – S1 Aileron – S2 Flap – S3 airbrake – S4 ? L&R wings mode: 8 pins – S1 L-Aileron – S2 L-Flap – S3 R-Aileron – S4 R-Flap](https://guillaumeplayground.net/wp-content/uploads/2022/03/RJX3276-3.jpg)
*L||R wing mode: 8 pins – S1 Aileron – S2 Flap – S3 airbrake – S4 ?L&R wings mode: 8 pins – S1 L-Aileron – S2 L-Flap – S3 R-Aileron – S4 R-Flap*

![Fuselage male connector 8 pins Splitted S1-S2 to have redundant +/-](https://guillaumeplayground.net/wp-content/uploads/2022/03/image.jpg)
*Fuselage male connector 8 pinsSplitted S1-S2 to have redundant +/-*