HoTT

Details

Protocol Number: 57 Autobind: No Channel Re-mapping: No Extended Limits: Yes Failsafe Support: Yes Receiver Match: Yes Telemetry: Yes Option Value: Frequency fine tuning

Frequency tuning is required for this protocol. See the Frequency Tuning page for more details.

Notes

Models: Graupner HoTT receivers (tested on GR-12, GR-12L, GR-16, and Vector)

Receiver feature configuration can be performed using the OpenTX script Graupner HoTT.lua.

Basic telemetry is available on OpenTX 2.3.3+ with receiver voltage, receiver temperature, RXRSSI, RX LQI, TX RSSI and TX LQI.

Lower TX LQI values indicate better link quality. TX LQI is a good indicator of how well the module is tuned.

You must use a different Receiver Number for each receiver. A maximum of 64 Hott receivers are supported.

Failsafe must be configured once with the desired channel values (hold or position) while the receiver is up (wait 10+ seconds for the receiver to learn the config) and then failsafe must be set to RX/Receiver otherwise the servos will jitter!

Channel Assignment

CH1	CH2	CH3	CH4	CH5	CH6	CH7	CH8	CH9	CH10	CH11	CH12
CH1	CH2	CH3	CH4	CH5	CH6	CH7	CH8	CH9	CH10	CH11	CH12

Sub Protocols

0 - Sync

Recommended for best telemetry performance.

1 - No_Sync

Telemetry compatibility mode which can be used when Sync does not work due to an old firmware on the RX.

You should upgrade your receivers/sensors to the latest firmware versions: https://www.rcgroups.com/forums/showpost.php?p=44668015&postcount=18022