# Kirdy Adapter
Kirdy Adapter is a Butterfly Laser Diode Mount to be used with [Kirdy](https://git.m-labs.hk/sinara-hw/kirdy) mainboard.

## Reproducible Project Outputs with Nix
User can run the following commands to export all the project output including Gerber & Drill files, Bill of Materials file, Schematics PDF and Step 3D model.
- `nix build .#LD_adapter_copper_plate`
- `nix build .#LD_adapter_type_1_PCB`
- `nix build .#LD_adapter_type_2_PCB`

## Development Environment
User can fetch the correct KiCad Version used in the project by running the following command.
- `nix develop`

## Laser Diode Adapter Type 1
User can configure the following features by populating the corresponding jumper resistors:
- Pinout of the laser mount
- Bypass or use the Bias-T Network for injecting RF Modulation into the laser diode

![Laser_Diode_Type_1_Pinout](./img/Laser_Diode_Type_1_Pinout.png)

| Pin | Description |
| --- | --- |
| 1  | TEC+  |
| 2  | NTC |
| 3  | PD Anode |
| 4  | PD Cathode |
| 5  | NTC |
| 6  | Not Connected |
| 7  | PD Cathode* |
| 8  | PD Anode* |
| 9  | LD Cathode* |
| 10 | LD Anode |
| 11 | LD Cathode |
| 12 | Not Connected |
| 13 | LD Anode |
| 14 | TEC- |

*: Alternate LD/PD Connections.


## Laser Diode Adapter Type 2
User can configure the following features by populating the corresponding jumper resistors and capacitors:
- Bypass or use the Laser Diode(if any) or PCB Bias-T Network for injecting RF Modulation into the laser diode

![Laser_Diode_Type_2_Pinout](./img/Laser_Diode_Type_2_Pinout.png)

| Pin | Description |
| --- | --- |
| 1  | NTC |
| 2  | NTC |
| 3  | LD Cathode |
| 4  | PD Anode |
| 5  | PD Cathode |
| 6  | TEC+ |
| 7  | TEC- |
| 8  | Case (GND) |
| 9  | Case (GND) |
| 10 | Not Connected |
| 11 | LD Anode |
| 12 | Modulation Input |
| 13 | LD Anode |
| 14 | Not Connected |

## Laser Diode Copper Heat Sink
It is preinstalled with a thermal interface sheet for ease of installation of laser diode. The thermal interface sheet preinstalled is subject to change.

Thermal Interface Sheet P/N: RS PRO 245-7321