| Item | Approx. Cost |
| PIC16F876 Microcontroller | $8 |
| MAX6675 Thermocouple Chip | $7.18 |
| LCD Display - Blue | $4.99 (+$5.99 shipping from China) |
| SOIC To DIP Adaptor(for MAX6675) | $3 |
| 28 Pin Socket | $2 |
| 20 Mhz Resonator | $1 |
| Circuit Board | $3.29 |
| 10K Ohm Potentiometer | $1.50 |
| 7805 Voltage Reg | $1.59 |
| 9v Battery Connector | $.50 |
| 9v Battery Holder | $.50 |
| 10uF 35v Caps(x2) | $1.00 |
| Blue terminal connector | $.50 |
| Micro switch | $1.25 |
| Headers, wire, resistors, ect. | $3 |
| Total Approx. Cost: | $45.31 |
Here is a snippet of BASIC code which reads the data from the chip. Written using MBasic from BasicMicro.com:
'Setup MAX6675 - Thermocouple MAXData con c1 ' MAXpin7 MAXcs con c6 ' MAXpin6 MAXClock con c3 ' MAXpin5 MAXResult var word THC var word ' degrees Celsius (* power of 10) THF var word 'stores degrees F Main: low MAXcs ' select chip shiftin MAXData,MAXClock,msbpost,[MAXResult\16] ' get data high MAXcs ' start new data capture THC= (MAXResult/32) ' Deg. C THF= (((THC*18)/10)+32) 'Conversion to Deg. F lcdwrite b5\b4, portb.nib0,[SCRRAM,clear,"Temperature: ", dec THF, "F"] 'display temp. on LCD pause 20 'give time between read cycles for MAX6675 to work right goto Main