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1. FED3_ZY: TimedFreeFeed_ZY_20231218.ino

A Timed Free_Feeding Lab Project Created by Zengyou Ye @ NIH/NIDA/IRP

This lab project enables free feeding for a specified duration each day upon receiving a TTL trigger. The system then waits for another trigger after the session ends.

Trigger Handling

  • A BNC connector listens for incoming triggers.
  • When BNCinput = true, it switches back to sending a signal output.

Session Configuration

  • Users can set the sessionDuration at the start, similar to configuring FEDID.
  • By default, the session duration is set to 3 hours (10,800 seconds), as displayed on the screen.
  • The screen also shows the trigger's start time in hour:minute format.

Output Behavior

When the BNC connector is in output mode:

  • A 200 ms TTL signal is sent each time a pellet is taken.
  • A 100 ms TTL signal is sent upon receiving a trigger.

User Instructions

  1. Replace the original FED3.cpp and FED3.h files with those in the Firmware\Modified_Source_Code\20231218_numMotorTurns folder.
  2. Upload the TimedFreeFeed_ZY_20231218.ino file to the FED3 device.
  3. If needed, adjust the sessionDuration from its default of 3 hours.

Controller Box

Top View More: Whole View, Top View2, Front View, Back View, Side View1, Side View2

2. Optional: Timed_FF_ZY.ino:

This special edition is designed to control the FED3 using its internal timer, allowing users to set the start time and session duration.