WM331 Receiver Main Processor 3 in 1 board
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
The board merges together three modules:
- Visual Positioning System - receiving and interpreting data from bottom camera and ultrasonic sonar for flight stabilization.
- Intelligent Flight - using data from cameras for collision detection and object tracking.
- OFDM transceiver - receiving commands from Remote Controller, and transmitting telemetry data plus compressed video stream for FPV.
The known variants are listed below.
| Marking | Overview |
|---|---|
| P02144.07 |
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| Leadcore LC1860C P2F6 1017 026 INU086.00 ARM | 1 | Quad-core 1.5GHz ARM Cortex-A7 SoC with Mali-T628 GPU and LTE Cat 4 baseband modem | ||
| Leadcore LC1160 S2F2 4216 000 HA7451 | 1 | Power Management Unit and Audio codec, which meets LC1860 requirements | ||
| Micron 7HA98 JWB30 PFVP | 1 | Micron 4GB EMMC + 4GB LPDDR3 | ||
| Movidius MA2155 651-B1 133T | 1 | VF2BGA225 | Movidius Myriad VPU, 600MHz, PWM outputs; receives data from all cameras and allows machine vision for intelligent functions of the drone | description |
| Lattice LE-2100E 5MG256C-A646VV22 PHIL 1647 DL54C3944?017 | 1 | Lattice MachXO3LF FPGA with 2100 Look-Up Tables, 1.2 V supply, high speed grade | datasheet | |
| 44641B BCL0TN 1703 | 1 | |||
| 65408-11 3033D34.1 1703 MX | 2 | |||
| SKY85809 64055 1640 MY | 2 | |||
| SKY 5404 | 2 | |||
| 78Y | 2 | |||
| W1A 6n | 4 | 3-pin SOT-23 | PMBT3904 NPN switching transistor | description |
| T120 PDBC | 1 | Quartz oscillator, 12 MHz | ||
| A0FYD | 1 | |||
| i1908 | 1 | |||
| PA 7CF | 1 | 3x3 UDFN/WSON | Mini Linear Regulator, DI AP7361ADJ | DI datasheet |
| S 81 | 4 | 6-lead 1.5x1.5 QFN-33 | SKY13320-374LF: 0.1-6.0 GHz GaAs SPDT Switch | description |
| CHR | 1 | |||
| CEH | 1 | markings uncertain | ||
| 5E???? | 1 | markings uncertain | ||
| AD80403BBCZ #1651 3692772.1 Singapore | 1 | 144-ball 10x10 CSP-BGA | 2x2 RF agile transceiver, Band: 2.4GHz to 2.5GHz and 4.9GHz to 6GHz; tunable channel bandwidth: <200kHz to 40MHz; Lightbridge RF amplifier | brief |
| NS 71A0F7U K00105 | 1 | National Semiconductor | ||
| K20 6273P | 1 | Quartz oscillator | ||
| STM32F 103CBU6 GH??2 93 CHN 639 | 1 | Mainstream Performance line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN; Lightbridge MCU | description | |
| T120 PD9Y | 1 | Quartz oscillator, 12 MHz | ||
| DJI R101 751?995T | 1 | |||
| 2.2 | 4 | SMD inductor, 2.2nH | ||
| 1R0 | 1 | SMD inductor | ||
| A??? | 6 | 8-pin SOT23 | Buck converter |
| Chips | Firmware | Description |
|---|---|---|
| LC1860 | ||
| Lattice LCMXO3L | ||
| STM32F103 | m0900 | Lightbridge MCU; configures and drives data encoder and WiMAX transceiver. |
The board contains connectors:
| Marking | Overview |
|---|---|
| TODO |
The following service pads exist on this board:
| Marking | Overview |
|---|---|
| GND | Ground |
| TX | UART Transmit line of the LC1860 console |
| RX | UART Receive line of the LC1860 console |
| TODO |
Top of a P02144.07 board:
Bottom of the P02144.07 board:
No schematics available.