> For the complete documentation index, see [llms.txt](https://teravolt.gitbook.io/teravolt/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://teravolt.gitbook.io/teravolt/peripherals/servoboard/hardware-overview.md).
# Hardware Overview
The ServoBoard is designed for flexibility. You can inject power via the JST-GH connectors or the solder pads, and route PWM signals from your Flight Controller (FC) directly to the signal pads.
**1. Signal Input (Control)**
The board receives PWM signals from the Flight Controller via a standard JST-GH 5-Pin connector located on the side. This connects directly to your FC's servo rail or PWM breakout.
| **Pin** | **Function** | **Description** |
| ------- | ------------ | ------------------------------ |
| 1 | GND | Signal Ground (Common with FC) |
| 2 | S4 | PWM Signal Channel 4 |
| 3 | S3 | PWM Signal Channel 3 |
| 4 | S2 | PWM Signal Channel 2 |
| 5 | S1 | PWM Signal Channel 1 |
**2. Power Input (High Current)**
Power is injected via two parallel JST-GH 4-Pin connectors. These are designed to mate directly with AeroBuck modules.
* Ports: 2x JST-GH 4-Pin (Parallel/Passthrough)
* Usage: Connect one port to the power source (AeroBuck). The second port can be used to daisy-chain power to another ServoBoard or StrobeIT driver.
| **Pin** | **Function** | **Description** |
| ------- | ------------ | --------------- |
| 1 | GND | Power GND |
| 2 | GND | Power GND |
| 3 | VCC | Power Positive |
| 4 | VCC | Power Positive |
**3. Servo Outputs**
The board features 4 vertical pin headers (standard 2.54mm pitch) for connecting peripherals.
* Top Row (S): Signal (from JST-GH 5-Pin input)
* Middle Row (+): VCC (from JST-GH 4-Pin power input)
* Bottom Row (-): GND (Common Ground)