Description Based on MCU N76E003 controlled mosfet board, mosfet active on and off intermittently Can set 0~999 seconds (16-17 minutes) after to turn on relay. (also can program to 999 minutes or maybe hours in more complex level) Also can set 0~999 after to turn off relay or hold on relay. One extra input signal, can use to control board by programming. fully isolated by optical coupler In current demo code, will work as “emergency button”, when send signal will hold current loop to stop. Can also connect to board ground, to eliminate the isolation MCU flashed with bootloader, you can upload code by USB-TTL debugger, no need special programmer. Usage: Power supply 5-37V from right top two pin terminals Board start to count down, and turn on mosfet control when count down to zero: supply power out to right-bottom terminal VOUT from power-in VIN. You can set the count down time by buttons. External trigger on left side terminal, it will hold the count down time when it is short connected. For more versatile usage, you can always try to reprogram it. Power Supply: Wide range input voltage 5-37V by regulator LM317 Protective diode to prevent wrong direction power connection. Other Features: On board two parallel Mosfet AOD4184, up to 40V, and Id 2x 50A = 100A. And switch voltage = input voltage, input voltage should be no more than LM317 voltage 37V. On board segment display to show timing. One relay signal led indicator Two config buttons, only two used. Documentation please see on this page.
