A synchronized midi looper which takes master clock from midi in and feeds it to a 4 step sequencer gate which in turn activates the loop recording only when hitting the first step. Same mechanics for stopping the recording, so you can press stop before the end of the bar and continue playing till the end of the bar when it will effectively stop recording.

Left stompswitch will start/stop the recording, middle stompswitch will stop/start the loop playing and right one will reset the loop.

On the first page you can see the sequencer and use it as a visual aid to know when to start pressing the keys for starting the loop recording, taking into consideration that recording only starts when hitting the first step of the sequencer.

Note that you won’t be able to start recording without midi clock in. You can workaround this by adding an LFO with a square wave and patch the output to the sequencer gate in on page 1.