Difference between revisions of "Temperature Monitoring"

From Nottinghack Wiki
Jump to navigation Jump to search
(Created page with "Temperature data from around the space is to be log via Cacti.<br/> Sampling done with DS18S20 1-wire digital thermometer, these can be daisy chained of the other arduino and MQT...")
 
Line 8: Line 8:
 
* [[Vending Machine]] in workshop (nanode)
 
* [[Vending Machine]] in workshop (nanode)
 
* [[Energy Monitoring|Energy Monitor]] in blue room cupboard (XRF)
 
* [[Energy Monitoring|Energy Monitor]] in blue room cupboard (XRF)
 +
 +
=== Cheap and cheerful thermistor workshop ===
 +
I have a bag of surplus 47k thermistors (about 500) and I intend to build a number of circuits to measure temperature starting with the very simplest and culminating in a teachable HackSpace project with reasonable accuracy. We will put these devices in fridges, near heat sources, near doors, windows, indoors, outdoors, you name it.
 +
 +
The component:
 +
* Listed in stores as "Future Electronics B4090K Thermistor 47k 5%"
 +
* I think it may be this one
 +
** http://uk.futureelectronics.com/en/Search.aspx?dsNav=Ny:True,Ro:0,Nea:True,N:477-4294920237
 +
** http://uk.futureelectronics.com/en/Technologies/Product.aspx?ProductID=NTCLE100E3473JB0VISHAY8666240
 +
* however, the Vishay product may be obsolete and the tolerance is listed as 1.5% rather than 5%
 +
 +
<code>
 +
  VISHAY
 +
    NTCLE100 Series NTC 47 kOhm ±1.5 % Radial Leaded Standard Precision Thermistor
 +
    Mfr Part#:  NTCLE100E3473JB0
 +
    Packaging : BAG
 +
    Std Packaging Qty: 500
 +
    Min Order Qty: 1
 +
    As low as:  £0.1751  (GBP)
 +
    In Stock:  No
 +
    Type:
 +
    NTC
 +
    Resistance:
 +
    47 kO
 +
    Tolerance (%):
 +
    ±1.5 %
 +
    B-constant:
 +
    4090 °K
 +
    Temperature Range:
 +
    -40 to +125 °C
 +
</code>
 +
 +
Some Google digging reveals...
 +
* http://www.vishay.com/docs/29049/ntcle100.pdf
 +
* these thermistors are colour coded
 +
** Yellow Violet Orange Gold
 +
*** B25/85-VALUE = 4090K (+/- 5%) (the gold means 5%)
 +
 +
The simplest circuits and Arduino code...
 +
* http://arduino.cc/playground/Main/InterfacingWithHardware#envtture
 +
** http://arduino.cc/playground/ComponentLib/Thermistor
 +
** http://arduino.cc/playground/ComponentLib/Thermistor2
 +
** http://arduino.cc/playground/ComponentLib/Thermistor3
 +
 +
[[User:Msemtd|Michael Erskine]] 06:43, 14 December 2011 (EST)
  
  

Revision as of 11:43, 14 December 2011

Temperature data from around the space is to be log via Cacti.
Sampling done with DS18S20 1-wire digital thermometer, these can be daisy chained of the other arduino and MQTT devices.
Aim to publish a standard format MQTT message that a script on Holly will decode and push to cacti

Posible Arduino to hook into

Cheap and cheerful thermistor workshop

I have a bag of surplus 47k thermistors (about 500) and I intend to build a number of circuits to measure temperature starting with the very simplest and culminating in a teachable HackSpace project with reasonable accuracy. We will put these devices in fridges, near heat sources, near doors, windows, indoors, outdoors, you name it.

The component: 

  VISHAY 
   NTCLE100 Series NTC 47 kOhm ±1.5 % Radial Leaded Standard Precision Thermistor
   Mfr Part#:  NTCLE100E3473JB0
   Packaging : BAG 
   Std Packaging Qty: 500
   Min Order Qty: 1
   As low as:  £0.1751  (GBP)
   In Stock:  No
   Type: 
   NTC
   Resistance: 
   47 kO
   Tolerance (%): 
   ±1.5 %
   B-constant: 
   4090 °K
   Temperature Range: 
   -40 to +125 °C

Some Google digging reveals...

The simplest circuits and Arduino code...

Michael Erskine 06:43, 14 December 2011 (EST)


Old Notes

  • Temp sensors dotted around space
  • Nanode again
  • Small wireless units or daisy chain of dalas one wires?
  • Humidity sensor's?
  • Push to cacti
  • Query from irc
Retrieved from "https://wiki.nottinghack.org.uk/index.php?title=Temperature_Monitoring&oldid=2527"