-- download at MT.QZX.COM (pulse-on-timer.lua)
-- output is off until a pulse is received on input
-- then output turns on for 60s
-- on timer is restarted if another pulse arrives while on

local o = "a" -- output
local i = "c" -- pulse
local th = 60 -- on for 60s after pulse

if event.iid == "lo" then
	port[o] = false
elseif event.type == "on" and pin[i] then
	port[o] = true
	interrupt(th, "lo")
end