WM321 Gimbal top board
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
The top gimbal board is responsible for transmitting video for live FPV feed, which was previously prepared and compressed by Camera encoder board. It also controls the gimbal, and contains first of 3 gimbal motor drivers.
There are multiple versions of the board.
| Marking | Overview |
|---|---|
| P01117.T4 |
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| STM32F407 | 1 | High-performance foundation line, ARM Cortex-M4 core with DSP and FPU, 1 Mbyte Flash, 168 MHz CPU, ART Accelerator, Ethernet, FSMC | description | |
| DSPIC32 | 1 | digital signal controller; 70 MIPS core with integrated DSP and enhanced on-chip peripherals; motor control MCU | description | |
| Micron 5GM12 D9NLC D8VC | 1 | 60-ball FBGA | MT46V16M16CY-5B:M Automotive DDR SDRAM, 4 Meg x 16 x 4 banks | description |
| Atheros AR9312 8B1A | 1 | |||
| Winbond 25Q64FVSIG 1452 | 1 | 64MBit Serial NOR Flash Memory | description | |
| SiGe 2565T 510GR | 2 | |||
| SKY2 5405 | 2 | |||
| SKY 3348 | 2 | |||
| 2Fx | 2 | |||
| AEUF | 1 | 8-pin SOT-23 | Buck converter | |
| OFW | 2 | 10-lead 2x1.5 UQFN-4141 | TI TS3USB221A-Q1 480 Mbps 1:2 USB Multiplexer/Demultiplexer Switch | description datasheet |
| AEKF | 2 | 8-pin SOT-23 | Maxim MAX3051EKA+T IC TXRX CAN 1MBPS | datasheet |
| T120 MhNK | 2 | 4-lead SMD 3225 | Quartz oscillator, 12 MHz | |
| T400 UaB0 | 1 | 4-lead SMD 3225 | Quartz oscillator, 40 MHz | |
| 316BCG M48845 | 1 | 8-pin 5x4.4 SOIC | MLX90316 Triaxis rotary position sensor; reads position of the magnet encoder ring on yaw motor shaft | decription |
| CON 1-35 2-34 | 1 | SMD | Omron XF2B-3545-31A; Flat Flex Cable ZIF Connector | datasheet |
| Chips | Firmware | Description |
|---|---|---|
| DSPIC33 | gimbal arm Firmware | Gimbal yaw control; reads yaw arm position potentiometer and supplies control signal to the motor driver circuit. Pre-programmed and not included in firmware updates. |
| STM32F407 | m0400 | Gimbal master control; provides gimbal arm microcontrollers with proper signals to ensure stabilization and responsiveness to user commands. |
| AR9312 | m0700 | Creates Wi-Fi hosts. Transfers video feed and data packets between the drone and connected client. |
Connectors on the board are:
| Marking | Overview |
|---|---|
| TODO |
The following service pads exist on this board:
| Marking | Overview |
|---|---|
| TODO |
Top of a P01117.T4 board:
Bottom of the P01117.T4 board:
Top of another P01117.T4 board:
Bottom of the P01117.T4 board:
Bottom of an unknown P01117 board, with gimbal arm circuit changed:
No schematics available.