Harp Load Cells Interface and Reader

This pair of boards can be used to acquire analog signals from load cells and output their data to a USB host. It is additionally able to emit programmable digital events.

Key Features

• Load cells interface
  • Controls up to 2 load cells readers
  • Digital outputs can be regulated at 3V or 5V
• Load Cells Reader
  • Up to 4 load cell sensors
  • 1kHz sampling rate
  • Load cells offset compensation

Connectivity

• Load cells interface
  • 1x BNC input signal (IN0)
  • 1x BNC output signal (Out0)
  • 1x screw terminal connector interface (GND, DOUT1 to DOUT8, DIN0)
  • 2x RJ45 for digital inputs (from load cells devices)
  • 1x stereo jack for clock sync input (CLKIN)
  • 1x USB (for computer)
  • 1x power barrel connector jack (12V only)
  • 1x screw terminal connector for 5V output (GND, +5V)
• Load Cells Reader
  • 4x flick lock connectors (X1 to X4) with 4 analog inputs each (5V, I+, I-, 0V)
  • 1x digital output [RJ45]

Interface

The interface with the Harp board can be done through Bonsai or a dedicated GUI (Graphical User Interface).

In order to use this GUI, there are some software that needs to be installed:

1 - Install the drivers.

2 - Install the runtime.

3 - Reboot the computer.

4 - Install the GUI.

Licensing

Each subdirectory will contain a license or, possibly, a set of licenses if it involves both hardware and software.