local side = "right"

local interval = 0.05

local trigger = function(previous, current)
    return current > 0
end

local mon = peripheral.find("monitor")

local values = {}
local previous = rs.getAnalogInput(side)
local curr = nil
while true do
    os.pullEvent("redstone")
    curr = rs.getAnalogInput(side)
    if trigger(previous, curr) then break end
    previous = curr
end

values[1] = curr

mon.setTextScale(0.5)
local monX, monY = mon.getSize()

print("Triggered!")
for i = 2,monX do
    sleep(interval) 
    values[i] = rs.getAnalogInput(side)
end

mon.setBackgroundColor(colors.black)
mon.setCursorBlink(false) 
mon.clear()
 
local prevX = 1
local prevY = values[1] * (monY-1)/15
for x, y in pairs(values) do
    y = y * (monY-1)/15
    term.redirect(mon)
    paintutils.drawLine(prevX, monY-prevY, x, monY-y, colors.green)
    term.redirect(term.native())
    prevX = x
    prevY = y 
end