SMOKERNETDUINO TEMPERATURE CONTROL SYSTEM

@JESSEPHELPS

JESSEPHELPS.COM

Platinum Sponsors

Silver Sponsors

Gold Sponsors

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?