Temperature Monitoring: Difference between revisions
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Temperature data from around the space is | Temperature data from around the space is being logged via [http://cacti.nottinghack.org.uk/graph_view.php Cacti].<br/> | ||
Sampling done with DS18S20 1-wire digital | Sampling done with DS18S20 1-wire digital thermometers, these can be daisy chained of the other arduino and MQTT devices.<br/> | ||
Temperatures are regularly published to "nh/temp" in the format "address:temp" e.g. "10C3282902080021:20.31". <br/> | |||
Current temperature sensors: | |||
* [[LED Matrix|MatrixMQTT]] - Blue room, studio and comfy area | |||
* [[Mini-matrix]] - Snackspace fridge | |||
* [[WorkshopMQTT]] - Workshop | |||
Possible Arduinos to hook into: | |||
* [[Gatekeeper]] in members box room (arduino, ethernet) | * [[Gatekeeper]] in members box room (arduino, ethernet) | ||
* [[Vending Machine]] in workshop (nanode) | * [[Vending Machine]] in workshop (nanode) | ||
* [[Energy Monitoring|Energy Monitor]] in blue room cupboard (XRF) | * [[Energy Monitoring|Energy Monitor]] to go in blue room cupboard (XRF) | ||
=== Cheap and cheerful thermistor workshop === | === Cheap and cheerful thermistor workshop === | ||
| Line 56: | Line 60: | ||
===Old Notes=== | ===Old Notes=== | ||
* Temp sensors dotted around space | * Temp sensors dotted around space - done to some degree | ||
* Nanode again | * Nanode again | ||
* Small wireless units or daisy chain of | * Small wireless units or daisy chain of dallas one wires? | ||
* Humidity sensor's? | * Humidity sensor's? | ||
* Push to cacti | * Push to cacti - done - [http://cacti.nottinghack.org.uk/graph_view.php] | ||
* Query from irc | * Query from irc - done; say "!temp" in #nottinghack | ||
[[Category:Projects]] | [[Category:Projects]] | ||
[[Category:Projects (in progress)]] | |||
[[Category:Instrumentation]] | [[Category:Instrumentation]] | ||
Latest revision as of 16:01, 31 January 2019
Temperature data from around the space is being logged via Cacti.
Sampling done with DS18S20 1-wire digital thermometers, these can be daisy chained of the other arduino and MQTT devices.
Temperatures are regularly published to "nh/temp" in the format "address:temp" e.g. "10C3282902080021:20.31".
Current temperature sensors:
- MatrixMQTT - Blue room, studio and comfy area
- Mini-matrix - Snackspace fridge
- WorkshopMQTT - Workshop
Possible Arduinos to hook into:
- Gatekeeper in members box room (arduino, ethernet)
- Vending Machine in workshop (nanode)
- Energy Monitor to go 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
- however, the Vishay product may be obsolete and the tolerance is listed as 1.5% rather than 5%
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...
- 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%)
- Yellow Violet Orange Gold
The simplest circuits and Arduino code...
Michael Erskine 06:43, 14 December 2011 (EST)
Old Notes
- Temp sensors dotted around space - done to some degree
- Nanode again
- Small wireless units or daisy chain of dallas one wires?
- Humidity sensor's?
- Push to cacti - done - [1]
- Query from irc - done; say "!temp" in #nottinghack