RADiOMASTER RP3 ExpressLRS Nano Receiver User Manual
- June 10, 2024
- Radiomaster
Table of Contents
RADiOMASTER RP3 ExpressLRS Nano Receiver
Product Information
The ISM MCUESP8285 SX1280IMLTRT is a radio transmitter and receiver that operates in the 2.4GHz frequency range. It has a maximum RF power of 100mw and comes with two 65mm T antennas. The device has a firmware version of Express LRS v3.0 pre-installed and is designed to work with the Radio Master RP3 Diversity 2400 RX. The device has a weight of 4.6g (including two antennas) and dimensions of 22mm x 13mm x 4mm. It has a maximum receive refresh rate of 500Hz/F1000Hz and a minimum receiver refresh rate of 25Hz. The device operates at a working voltage of 5V and is equipped with the CRSF bus interface for communication.
Product Usage Instructions
To use the ISM MCUESP8285 SX1280IMLTRT, you need to follow the instructions provided in the user manual. The device comes pre-installed with Express LRS v3.0 firmware and is designed to work with the Radio Master RP3 Diversity 2400 RX. The device can be bound using traditional binding or Express LRS Lua script. For traditional binding, the binding phrase must be commented out in user defines on the RX. To bind the receiver:
- Power off your transmitter
- Plug in and unplug your receiver three times
- Make sure the LED is doing a quick double blink, which indicates the receiver is in bind mode
- Use the [BIND] button on the Express LRS Lua script, which sends out a binding pulse
- If the receiver has a solid light, it’s bound!
The device has a status light that indicates its current status:
- 500 Slow flash (500ms) – waiting for transmitter
- 25 Fast flash (25ms) – WIFI WIFI On
- Double flash – receiver in bind mode
- Triple flash – receiver functional, mode selection error
- Solid – receiver functional
Note that the device should be installed and operated with a minimum distance of 20mm between the radiator and your body to comply with FCC radiation exposure limits.
For more information, please visit the ELRS website at https://www.expresslrs.org/2.0/.
Product Features
- Type: ISM
- MCU: ESP8285
- RF Chip: SX1280IMLTRT
- Telemetry RF power: max 100mw
- Antenna: 65mm 2.4GHz T Antenna x 2 Frequency Range: 2400 MHz to 2480
- MHz Maximum receive refresh rate: 500Hz / F1000Hz Minimum
- Receiver refresh rate: 25Hz
- Working voltage: 5V
- Weight: 4.6g (Including two antenna) Dimension: 22mm13mm4mm
- Firmware Version: ExpressLRS v3.0 pre-installed FW
- Target: Radio Master RP3 Diversity 2400
- RX Bus interface: CRSF
Traditional Binding
For traditional binding, the binding phrase must be commented out in user defines on the RX.
- Power off your transmitter
- Plug in and unplug your receiver three times
- Make sure the LED is doing a quick double blink, which indicates the receiver is in bind mode
- Use the [BIND] button on the ExpressLRS Lua script, which sends out a binding pulse
- If the receiver has a solid light, it’s bound.
For more information, please visit the ELRS website:
https://www.expresslrs.org/2.0
FCC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: This device may not cause harmful interference,
and This device must accept any interference received, including interference
that may cause undesired operation.
Warning
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
NOTE
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more
of the following measures: Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver. Connect the
equipment into an outlet on a circuit different from that to which the
receiver is connected. Consult the dealer or an experienced radio/TV
technician for help.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20mm between the radiator & your body.