Netduino Smoker
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PARTS2x - 16” Terra Cotta Pot
http://www.homedepot.com/p/Norcal-
Pottery-16-in-Terra-Cotta-Pot-
100043021/100333338
PARTS18 1/2” Kettle Grill Charcoal Grate
Actual Diameter 15”
http://www.homedepot.com/p/Weber-
Plated-Steel-Charcoal-Grate-for-18-1-2-
in-Kettle-Grills-7440/100683984
PARTSOster Single Burner
http://www.walmart.com/ip/24183268
PARTSNetduino (2, Plus 2)
https://www.sparkfun.com/products/1166
3
http://www.adafruit.com/products/1228
http://www.makershed.com/ProductDetai
ls.asp?ProductCode=MKND06
PARTSTaylor Thermometer Probe (Thermistor)
http://www.amazon.com/Taylor-
Replacement-Thermometer-Stainless-
1470NBRP/dp/B003BX64M6/ref=pd_sim
_k_2
PARTSTDK Lambda LS25-5
5V Power supply – 25W
http://www.digikey.com/product-
search/en?mpart=LS25-5&vendor=285
PARTSSolid State Relay (SSR)
3VDC Input Voltage
48-480VAC Output Voltage
10 Amps
http://www.zorotools.com/g/00062838/k-
G1452622
PARTS2.5mm audio jack
http://www.digikey.com/product-
detail/en/MJ-2506/CP-2506-ND/281261
THERMISTOR
VOLTAGE DIVIDER
• Vout = Vin * R2 / (R1 + R2)
• Vin = 3.3V
• R2 = 100k
• R1 = 100k @ room temp
STEINHART–HART EQUATION
• 1/T = A + B ln (R) + C (ln (R))^3
• T = Temperature in Kelvin
• R = Resistance
• A, B, C = Constant determined experimentally
QUESTIONS?