diff --git a/deploy/roles/collectd/templates/leds.py b/deploy/roles/collectd/templates/leds.py
index e1bae8f..35a0965 100755
--- a/deploy/roles/collectd/templates/leds.py
+++ b/deploy/roles/collectd/templates/leds.py
@@ -1,149 +1,149 @@
 #!/usr/bin/env python2
 import collectd
 import subprocess
 from math import floor, ceil
 import time
 
 DEBUG = 1
 SERIAL = 1
 
 {% if ctrl_leds %}
 import serial
 PORT = '/dev/ttyS1'
 SPEED = 9600
 CORES = int(subprocess.check_output('nproc'))
 
 LEDS_NUMBER = 8  # number of leds in a column
-LEDS_MAX = 100
+LEDS_MAX = 20
 LEDS_NOCOL = '0 0 0 '
 
 FAN_MAX = 200
 TEMP_LOW = 20
 TEMP_HIGH = 80
 
 COLORS = [
     '0 X X ',  # cyan
     'X 0 X ',  # magenta
     'X X 0 ',  # yellow
     'X 0 0 ',  # red
     '0 X 0 ',  # green
     '0 0 X ',  # blue
 ]
 
 hosts = set()
 temp = {}
 {% endif %}
 
 
 def debug(msg):
     if DEBUG:
         f = open('/tmp/debug', 'a+')
         f.write(str(msg) + "\n")
         f.close()
 
 
 #
 # CPU Collector
 #
 def read_stat():
     p = open('/proc/stat', 'r')
     data = p.readlines()[0].split(' ')
     p.close()
     return data
 
 
 def cpu():
     data = read_stat()
     spent = float(int(data[2]) + int(data[3]) + int(data[4]))
     idle = float(data[5])
     time.sleep(0.2)
     data = read_stat()
     spent = float(int(data[2]) + int(data[3]) + int(data[4])) - spent
     idle = float(data[5]) - idle
     percent = 100 * spent / (spent + idle)
     return percent
 
 
 def read(data=None):
     vl = collectd.Values(type='cpu')
     vl.plugin = 'cpu-avg'
     vl.dispatch(values=[cpu()])
 
 collectd.register_read(read)
 
 {% if ctrl_leds %}
 #
 # LEDs and FAN control
 #
 
 
 def color(value, index):
     return COLORS[0].replace('X', str(int(value)))
     #return COLORS[index].replace('X', str(int(value)))
 
 
 def write(vl, data=None):
     global hosts, temp
 
     line = ''
     hosts.add(vl.host)
     index = list(hosts).index(vl.host)
 
     if vl.type == 'temperature' and vl.plugin_instance == 'thermal_zone0':
         temp[vl.host] = float(vl.values[0])
         temp_last = max(temp.values())
         if temp_last > TEMP_LOW and temp_last < TEMP_HIGH:
             line += 'f %d ' % (temp_last * 2 / 3 - 15)
         elif temp_last > TEMP_HIGH:
             line += 'f %d ' % FAN_MAX
         else:
             line += 'f 0 '
 
     if vl.plugin == 'cpu-avg':
         cpu = vl.values[0]
         leds_on = int(ceil(LEDS_NUMBER * cpu / 100))
         line += 'l%d ' % index
         for i in xrange(LEDS_NUMBER - 1, -1, -1):
             if i < leds_on:
                 line += color(LEDS_MAX, index)
             else:
                 line += LEDS_NOCOL
 
     if vl.type == 'load':
         load1 = vl.values[0]
         load1 = load1 if load1 <= CORES else CORES
         leds_on = int(floor(LEDS_NUMBER / CORES * load1))
         line += 'l%d ' % index
         for i in xrange(LEDS_NUMBER - 1, -1, -1):
             if i < leds_on:
                 line += color(LEDS_MAX, index)
             else:
                 line += LEDS_NOCOL
 
     write_serial(line)
 
 
 def write_serial(line):
     if line != '':
         debug(line)
         if SERIAL:
             ser = serial.Serial(PORT, SPEED)
             ser.write(line)
             ser.close()
 
 
 def init():
     line = 'l0 ' + '0 0 0 ' * 8
     write_serial(line)
     line = 'l1 ' + '0 0 0 ' * 8
     write_serial(line)
     line = 'l2 ' + '0 0 0 ' * 8
     write_serial(line)
     line = 'l3 ' + '0 0 0 ' * 8
     write_serial(line)
     line = 'f 0 '
     write_serial(line)
 
 init()
 collectd.register_write(write)
 {% endif %}