Cen-Tech Thermometer to PC Hacking

I just got my new $30 Cen-Tech thermometer from Harbor Freight and it's begging to be hacked. I would love to be able to use this thermometer as part of a closed loop system to control a hot plate for soldering purposes. Just inside the battery compartment is a header with four pins. They nicely labeled the pins on the silk screen. I'm probing on "Gnd" and "Tx" pins. I used a MAX232 level shifter to convert the TTL output to RS232 so I could connect to my PC. I then ran the attached simply Python app that dumps the data packets to the console. Each packet has 25 characters and repeats at about 3Hz. My question is, how would one go about decoding the data packets? Some numbers seem constant while other move. I'm hoping the data format is obvious to someone. Note, the reading on the display was around 68.8 degrees F when this data was collected. The readings did jump plus/minus a few tenths while collecting. Any ideas? Thanks, Jim Console Output: 33 15 11 00 3A 07 9B 14 1B 1E 82 FF 15 07 A9 12 F7 01 CA 0B 97 0C 00 00 4A 33 15 11 00 3A 07 9B 14 1B 1E 82 FF 15 07 A9 12 F7 01 CA 0B 97 0C 00 00 4A 33 15 11 00 3A 07 9B 14 1B 1E 82 FF 15 07 A9 12 F7 01 CA 0B 97 0C 00 00 4A 33 15 10 00 3A 07 9B 14 1B 1E 81 FF 15 07 A9 12 F6 01 CA 0B 97 0C 00 00 47 33 15 10 00 3A 07 9B 14 1B 1E 81 FF 15 07 A9 12 F6 01 CA 0B 97 0C 00 00 47 33 15 11 00 3A 07 9B 14 1B 1E 82 FF 15 07 A9 12 F7 01 CA 0B 97 0C 00 00 4A 33 15 11 00 3A 07 9B 14 1B 1E 82 FF 15 07 A9 12 F7 01 CA 0B 97 0C 00 00 4A 33 15 12 00 3A 07 9B 14 1B 1E 84 FF 15 07 A9 12 F8 01 CA 0B 97 0C 00 00 4E 33 15 13 00 3A 07 9B 14 1B 1E 85 FF 15 07 A9 12 F9 01 CA 0B 97 0C 00 00 51 33 15 11 00 3A 07 8F 14 1B 1E 82 FF 15 07 9E 12 F7 01 CA 0B 9C 0C 00 00 38 33 15 11 00 3A 07 8F 14 1B 1E 82 FF 15 07 9E 12 F7 01 CA 0B 9C 0C 00 00 38 33 15 11 00 3A 07 8F 14 1B 1E 82 FF 15 07 9E 12 F7 01 CA 0B 9C 0C 00 00 38 33 15 09 00 51 07 63 17 65 1D 81 FF 2C 07 2D 15 F1 01 00 0C 92 0B 00 00 35 33 15 0B 00 51 07 63 17 65 1D 84 FF 2C 07 2D 15 F3 01 00 0C 92 0B 00 00 3C 33 15 0A 00 51 07 63 17 65 1D 82 FF 2C 07 2D 15 F2 01 00 0C 92 0B 00 00 38 33 15 0A 00 51 07 63 17 65 1D 82 FF 2C 07 2D 15 F2 01 00 0C 92 0B 00 00 38 33 15 0A 00 51 07 63 17 65 1D 82 FF 2C 07 2D 15 F2 01 00 0C 92 0B 00 00 38 33 15 0A 00 51 07 63 17 65 1D 82 FF 2C 07 2D 15 F2 01 00 0C 92 0B 00 00 38 33 15 0A 00 51 07 63 17 65 1D 82 FF 2C 07 2D 15 F2 01 00 0C 92 0B 00 00 38 33 15 0A 00 51 07 63 17 65 1D 82 FF 2C 07 2D 15 F2 01 00 0C 92 0B 00 00 38 33 15 0B 00 51 07 63 17 65 1D 84 FF 2C 07 2D 15 F3 01 00 0C 92 0B 00 00 3C

Topic by jimk3038 10 years ago  |  last reply 8 years ago


how to make boxing heavy Punching Bag?

If somebody cen make video about making bag

Question by 9 years ago  |  last reply 7 years ago


3d Printing

Does Any one know how I can convert my .3DP file using Autodesks Catch123d App into a VRML? So I cen then edit the part ready for 3D Printing?

Topic by marc3dp 6 years ago  |  last reply 6 years ago


Idea to Store Solar, or Wind Energy in Tanks in Central, South American, Africa

 I go to Togo, West Africa, and they already use, or need the black water tanks. they can have the water pumped using solar, windmills, or rope pumps, then allow it to fall, and light their houses with LED lights, and charge their cell phones. So what do you think, anyone have experience using these cheap hydro generators? Do they work? Do they last? Is there enough water pressure? Thanks, Andy Lee Graham https://www.hobotraveler.com/blogger.html

Topic by hobotraveler 1 year ago  |  last reply 1 year ago


Halloween Kids

Halloween is coming! It may still be a little bit in the future, but a truly great costume requires some planning, especially if you're going to be making it for a kid. To help you out, we've compiled a list of Halloween Instructables that can be used for a kid's costume. Be sure to check them all out.Make something awesome, document it, and be sure to enter it into our DIY Halloween Contest!Also see: Halloween Pumpkin Carving Halloween Costumes Halloween Decorations Halloween Makeup Halloween Party Halloween Masks Toddler Flintstone Car by lemaster63 A total Instructables classic, this describes the process of making a Flintstones car to go with Pebbles and Bambam outifts. Make a pirate eye patch for your kids by hobbyman.se Every pirate outfit needs an eyepatch and with a small project like this the kids cen help make it as well! How to make a superhero cape! by jessyratfink Want to be a Marvel superhero or maybe your own invented superhero? Then you're probably going to need a cape so read this and start making one today! How to make a child skunk costume by Honus This skunk outfit was made to introduce an Instructablers' son to the spirit of Halloween. He must've loved it because he had another cool outfit the next year as well. Giant Toothbrush by caitlinsdad This huge toothbrush goes along with a dentist outfit, but you can use these ideas to make any other huge prop you want. Almost any costume is improved with a cool prop to hold. Kid's Obi Wan Costume by CementTruck Show off your young one's connection with The Force by creating a custom Jedi outfit. You probably won't even have to buy much new material. How to Make a Chicken Costume by bethaldridge Turn the kids into chicks for Halloween and then give them a ride in a cart for some cute overload. Make an awesome Harry Potter wand from a sheet of paper and glue gun glue by KaptinScarlet Another classic Instructable, you can easily make your own custom wand for a Harry Potter outfit. It's so simple you'll probably end up making a bunch. Expelliarmus! How to Make a Pucca Costume by kawaiicrafter A dead simple outfit with great results. Turn your kid into an animated character for a day! How to Make a Naruto Style Headband by laminterious Turn a soda can into a nice shiny headband. You can copy the Naruto design or make up your own.

Topic by fungus amungus 10 years ago  |  last reply 10 years ago