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door_access_controllers [2019-02-24 00:35]
tim
door_access_controllers [2019-02-24 00:39] (current)
tim [PCB]
Line 33: Line 33:
 Errata: a generic through-hole flyback diode should be fitted between GND and 12V_OUT, on the underside of the screw terminal. Errata: a generic through-hole flyback diode should be fitted between GND and 12V_OUT, on the underside of the screw terminal.
  
 +==== Lessons Learned ====
 +
 +Future PCB revisions are likely to be based on a Wemos D1 Mini module to reduce component count and allow easier debugging. The onboard DC-DC converter will be replaced with an off-the-shelf "LDO replacement"​ DC-DC converter module.
 ===== Controller Unit ===== ===== Controller Unit =====
  
door_access_controllers.txt ยท Last modified: 2019-02-24 00:39 by tim