hardware.md

Hardware description

• Schematic
• Connectors
  • Inputs
  • Outputs
• Controls
  • Solenoid control
  • Servo Control
  • H-bridge
• Communication

The Launchpad Controller is a 100 x 100 mm, 4 layers PCB.

Schematic

The schematic for the Launchpad Controller can be found in doc/schematics/schematic.pdf

Connectors

Inputs

• 2x XT60 battery input for 3S LiPos (11.1V nominal). On top of the above picture
• 1x 5V regulated input. Use the USB connector on the microcontroller OR the 5.2V connector at the bottom of the above picture

Outputs

• 3x JST-XH, 3 pins with PWM signal
• 2x XT30 female @12V ON/OFF
• 2x XT30 female @24V ON/OFF
• 1x XT30 female @12V or @24V, output of an H-bridge (2 more H-bridge outputs can be added)

Controls

Solenoid control

• Up to 4 at a time. 2 at 12V and 2 at 24V
• Any solenoid can draw up to 15A

Servo Control

• Up to 3 at a time
• 6V/0.5A
• 50 Hz PWM signal with adjustable duty cycle

H-bridge

• Up to 3 outputs at a time
• 12V or 24V. Selectable with a jumper on the bottom side of the PCB

Communication

A computer can control the Launchpad Controller through the USB Serial interface of the microcontroller or through a LoRa transceiver (RFM9xW). There is a 50Ω RP-SMA connector to connect an antenna