diff --git a/react.lua b/react.lua
new file mode 100644
index 0000000..4ab9ffd
--- /dev/null
+++ b/react.lua
@@ -0,0 +1,84 @@
+--regulate in between these in normal operation
+NORMAL_THRESHOLD_U = 8000000
+NORMAL_THRESHOLD_L = 7000000
+--control rod pos for normal operation
+NORMAL_ROD_POS = 81
+
+--proportionally increase production when energy
+--storage drops below this level
+--(by removing control rods)
+HIGH_THRESHOLD = 6000000
+
+
+local active = false
+local ctrl_rods = NORMAL_ROD_POS
+
+local reactor = peripheral.wrap("back")
+local mon = peripheral.wrap("right")
+
+print("Monitoring reactor...")
+
+while (true)
+do
+    --setup monitor
+    mon.clear()
+
+    --get reactor energy
+    local energy = reactor.getEnergyStored()
+    --display
+    mon.setCursorPos(1, 1) --why is there no print() ???
+    mon.write(energy)
+    mon.write("RF")
+
+        
+    if (energy > NORMAL_THRESHOLD_U)
+    then
+        active = false
+    else
+        if (energy < NORMAL_THRESHOLD_L)
+        then
+            active = true
+            if (energy < HIGH_THRESHOLD)
+            then
+                --proportional control
+                ctrl_rods = NORMAL_ROD_POS * (energy / HIGH_THRESHOLD)
+            end
+        end
+    end
+    
+    --actually set state
+    mon.setCursorPos(1, 2)
+    if (active) 
+    then
+        reactor.setActive(true)
+        mon.write("On")
+    else
+        reactor.setActive(false)
+        mon.write("Off")
+    end
+    
+    mon.setCursorPos(1, 4)
+    reactor.setAllControlRodLevels(ctrl_rods)
+    mon.write(ctrl_rods)
+    mon.write("%")
+
+
+    --display power produced
+    mon.setCursorPos(1, 3)
+    mon.write(math.floor(reactor.getEnergyProducedLastTick()))
+    mon.write("RF/t")
+    
+
+    --also check if fuel has run out
+    --(if the fuel inside the reactor isn't
+    --getting refilled anymore)
+    
+    local deltaFuel = reactor.getFuelAmountMax() - reactor.getFuelAmount()
+    if (deltaFuel > 1000) --more than 1 bucket
+    then
+        mon.setCursorPos(1, 5)
+        mon.write("REFUEL!")
+    end
+                        
+    sleep(1)
+end
diff --git a/recv_file.lua b/recv_file.lua
new file mode 100644
index 0000000..20b1115
--- /dev/null
+++ b/recv_file.lua
@@ -0,0 +1,22 @@
+local sides = peripheral.getNames()
+for i = 1, #sides do
+    if peripheral.getType(sides[i]) == "modem" then
+        modemSide = sides[i]
+        break
+    end
+end
+
+rednet.open(modemSide)
+
+id, msg, dist = rednet.receive()
+print("Received data:")
+term.write("Filename: ")
+name = tostring(read())
+
+print(msg)
+content = textutils.unserialize(msg)
+local file = fs.open(name, "w")
+file.write(content)
+file.close()
+
+rednet.close(modemSide)
diff --git a/send_file.lua b/send_file.lua
new file mode 100644
index 0000000..422a841
--- /dev/null
+++ b/send_file.lua
@@ -0,0 +1,33 @@
+local sides = peripheral.getNames()
+for i = 1, #sides do
+    if peripheral.getType(sides[i]) == "modem" then
+        modemSide = sides[i]
+        break
+    end
+end
+
+rednet.open(modemSide)
+
+term.write("Path: ")
+path = tostring(read())
+
+local file = fs.open(path, "r")
+content = file.readAll()
+data = textutils.serialize(content)
+
+term.write("Receiver id: ")
+id = tonumber(read())
+
+print("Initialize receiver please!")
+print("Press 's' to send")
+
+local event, c = os.pullEvent("char")
+if c == "s" then
+    print("Sending...")
+    print(id)
+    rednet.send(id, data)
+else
+    print("Aborted.")
+end
+
+rednet.close(modemSide)
\ No newline at end of file