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Matek mLRS MAVLink 900MHz Receiver, mR900-22
Dostępność:
dostępny
Wysyłka w:
24 godziny
Cena:
78,00 zł
Cena regularna:
Najniższa cena z 30 dni przed obniżką:
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Producent:
Kod produktu:
MTMR90022
Opis
Specifications
- STM32WLE5CC with TCXO, mLRS firmware
- RF Frequency: 900MHz (868MHz, 915MHz FCC)
- RF power: -9dBm(min) / 0dBm / 10dBm / 20dBm / 22dBm(158mW)
- Antenna connector: IPEX MHF-1
- TX2/RX2: Bi-directional Serial MAVLink
- TX1: RC out(CRSF or SBUS)
- 2x buttons for Boot mode and Bind
- Power supply: 4-9V DC @ “V” Pad
- Power dissipation: Average 67mA/Peak 170mA@5V IN(31Hz, 22dbm)
- PCB Size: 24 x 15.5 mm
- Weight: 2.3g w/ antenna
- Packing:
- 1x mR900-22
- 1x IPEX MHF1 dipole antenna. 8cm
LED Status
- [Red flashing 2Hz], not connected to transmitter
- [Green flashing 1Hz], connected to transmitter
- [Red and Green alternately ], Binding mode enabled
Binding
- After powering on, press the bind button (for ca. 4 seconds) on the receiver. When in bind mode, the green and red LEDs will blink alternatively with ca 2.5 Hz.
- https://github.com/olliw42/mLRS-docu/blob/master/docs/BINDING.md
Firmware
- mLRS https://github.com/olliw42/mLRS/tree/main/firmware/pre-release-stm32
- Targets: rx-matek-mr900-22-wle5cc-xxx
Tips
- mLRS Github & Documentation
- mLRS Discord
- mLRS Facebook group
- If set RF power >=500mW, It is recommended to attach the heatsink to the bottom side of PCB. The gaps between fins can be used for mounting with M3 screws
- mR900-22 is NOT compatible with ELRS 900MHz / Frsky R9 series using the SX127x. They will not bind with each other.
Wiring
Modes and Link rates
| 50 Hz | 31 Hz | 19 Hz | FLRC (111 Hz) | FSK (50 Hz) | |
| frequency bands | 2.4 GHz | 2.4 GHz | 2.4 GHz | 2.4 GHz | |
| / | 915/868 MHz | 915/868 MHz | / | 915/868 MHz | |
| / | 433 MHz/70 cm | 433 MHz/70 cm | / | 433 MHz/70 cm | |
| chip sets | SX128x | SX128x | SX128x | SX128x | |
| / | SX126x/LLCC68 | SX126x/LLCC68 | / | SX126x/LLCC68 | |
| / | STM32WLE5 | STM32WLE5 | / | STM32WLE5 | |
| / | / | SX1276 | / | ||
| downlink serial rate | 4100 Bytes/sec | 2562 Bytes/sec | 1547 Bytes/sec | 9111 Bytes/sec | 4100 Bytes/sec |
| uplink serial rate | 3200 Bytes/sec | 2000 Bytes/sec | 1207 Bytes/sec | 7111 Bytes/sec | 3200 Bytes/sec |
| receiver sensitivity | -105 dBm | -108 dBm | -112 dBm | not for LR | not for LR |
Firmware and Flashing
Download STM32CubeProgrammer from ST website
mLRS firmware:
- https://github.com/olliw42/mLRS/tree/main/firmware/pre-release-stm32
- Targets: rx-matek-mr900-22-wle5cc-xxx
————————————————————————————————————
Connect the mR900-22 to USB-TTL module (e.g.CP210x, FTDI)
- mR900-22 RX2 — USB-TTL module TX
- mR900-22 TX2 — USB-TTL module RX
- mR900-22 V — USB-TTL module 5V
- mR900-22 G — USB-TTL module GND
Connect USB-TTL module to computer while holding the receiver boot button in.
- Select UART
- Select the COM port of USB-TTL module
- Connect
- select “Erasing & Programming”
- Tick all sectors and click “erase selected sectors”
- Browse firmware (hex or bin file) related to the hardware.
- Click “Start Programming”
- After programming, unplug USB and plug USB back in. If red LED blinks at 2Hz, the receiver is waiting for connecting with transmitter.
