Electronic sowing control (4 rows)

It controls the seeds that fall from the seedbed.
The display is via a two-color LED for each line.
The passage of the seed is displayed so that the green LED flashes when the seed passes. After that, the LED turns off and waits for the next grain.
If the next grain does not pass within 2 to 5 seconds, the red LED lights up and an audible alarm is activated.
When turning on headlands, the audible alarm goes off after 3 seconds.
During operation, if we have a stop on a line, the sound alarm is not turned off.
Opting out of tracking is possible for each row separately.