| 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 (I do NOT have the HEX file available, or this code written in any other programming language):
'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