This is a watered-down ECM-only antimissile system inspired by Ramirez's chaff launcher, Thargoid's Anti Missile System, Cmdr Wyvern's Automatic Chaff System (which was based on Thargoid's AMS and Ramirez's Chaff Dispenser), and Screet's Missile Countermeasures (which was based on Cmdr Wyvern's Automatic Chaff System).
It's not "intelligent" -- it just fires the ECM *ONCE* when a missile is fired at the player's ship. In a sense, you can assume many NPC ships already have this equipment. It will warn but not fire the ECM if the energy levels are really low. It can be enabled/disabled, via equipment activation...in case you'd prefer to manually use ECM or if you have other OXP equipment that has the same effect. Even when enabled, ECM can still be fired manually...but not more often than normal.
There may be a minor conflict with this and Cmdr Wyvern's Automatic Chaff System, Ramirez's Chaff Launcher, Thargoid's Anti Missile System, and/or Screet's Missile Countermeasures.
The ECM may fire multiple times consecutively per each incoming missile as a result, rapidly depleting your energy banks.
So it's best to have only 1 such system installed or activated. (Good thing Auto-ECM can be disabled!)
But even together, the OXPs will not cause the ECM to fire faster than you could manually.
Auto-ECM_0.4.oxz for Oolite v1.79:
Auto-ECM v0.2 OXP for Oolite v1.77:
(v0.3 was an internal testing version for when I was converting from v1.77 to v1.79...I may use that version if I release an updated Auto-ECM for Oolite v1.77 only.)