{"id":283030,"date":"2020-05-26T12:34:01","date_gmt":"2020-05-26T16:34:01","guid":{"rendered":"https:\/\/umaine.edu\/econdev\/?page_id=283030"},"modified":"2021-10-28T12:21:32","modified_gmt":"2021-10-28T16:21:32","slug":"how-to-make-3d-printed-infrared-thermometer","status":"publish","type":"page","link":"https:\/\/umaine.edu\/inspire\/covid-19-innovation__trashed\/how-to-make-3d-printed-infrared-thermometer\/","title":{"rendered":"How to make a 3D-printed infrared thermometer"},"content":{"rendered":"

\"InfraredMany reopening plans require (or will require) real-time non-contact temperature readings of people entering buildings and other public spaces. Unfortunately, the demand for reliable infrared (IR) thermometers is still very high and the commercial supply is limited. By following this guide, developed by researchers at UMaine’s VEMI Lab<\/a>, you and other hobbyists can help bolster the supply of IR thermometers, allowing your local businesses, nonprofits, and other entities to comply with public health guidance and reopen their doors.<\/p>\n

DISCLAIMER: DO NOT USE THIS FOR MEDICAL PURPOSES.<\/em> It is designed to read an *approximate* temperature, to see if someone likely has a fever; it is NOT to be used for a medical diagnosis of illness.<\/strong><\/p>\n

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PARTS LIST<\/u><\/strong><\/p>\n

Prices for parts may change. At the time of publication, it was possible to acquire all the needed parts from the sources below for approximately $60.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Arduino Pro Mini 328<\/td>\nhttps:\/\/www.sparkfun.com\/products\/11113<\/a><\/td>\n<\/tr>\n
1K Ohm Resistors 20ct<\/td>\nhttps:\/\/www.sparkfun.com\/products\/14492<\/a><\/td>\n<\/tr>\n
10K Ohm Resistors 20ct<\/td>\nhttps:\/\/www.sparkfun.com\/products\/14491<\/a><\/td>\n<\/tr>\n
Breakaway Pin Headers<\/td>\nhttps:\/\/www.sparkfun.com\/products\/116<\/a><\/td>\n<\/tr>\n
Battery Clip<\/td>\nhttps:\/\/www.sparkfun.com\/products\/91<\/a><\/td>\n<\/tr>\n
Temperature Sensor<\/td>\nhttps:\/\/www.sparkfun.com\/products\/9570<\/a><\/td>\n<\/tr>\n
Display<\/td>\nhttps:\/\/www.sparkfun.com\/products\/11409<\/a><\/td>\n<\/tr>\n
On\/Off Switch<\/td>\nhttps:\/\/www.sparkfun.com\/products\/102<\/a><\/td>\n<\/tr>\n
Pushbutton<\/td>\nhttps:\/\/www.sparkfun.com\/products\/11995<\/a><\/td>\n<\/tr>\n
Protoboard<\/td>\nhttps:\/\/www.sparkfun.com\/products\/8808<\/a><\/td>\n<\/tr>\n
F\/F Wires 20ct<\/td>\nhttps:\/\/www.sparkfun.com\/products\/12796<\/a><\/td>\n<\/tr>\n
9V Battery<\/td>\nLocal Store<\/td>\n<\/tr>\n
FTDI Board**<\/td>\nhttps:\/\/www.sparkfun.com\/products\/9716<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

**FTDI board is optional and a maximum of 1 is needed. See Step 4 of Instructions<\/p>\n

Why these parts?<\/strong><\/p>\n

The Arduino Pro Mini is the smallest reliable microcontroller we could buy, which makes it ideal for embedding in a 3D-printed case. The pin headers, protoboard, and F\/F wires are not required for functionality, but will make the finished product much more robust. The 3D-printable case was designed with the switch, pushbutton, and display listed above; changing any of these will require a change in the case file.<\/p>\n

This temperature sensor is NOT medical-grade. The sensor included in this guide has \u00b10.5\u2103 accuracy, while a medical sensor would have \u00b10.1\u2103 accuracy. As noted above, DO NOT USE THIS FOR MEDICAL PURPOSES.<\/em> It is designed to read an *approximate* temperature, to see if someone likely has a fever; it is NOT to be used for a medical diagnosis of illness.<\/strong><\/p>\n

A higher-precision version of the temperature sensor (which is still not medical-grade) is available for purchase through Digi-Key Electronics<\/a>.<\/p>\n

INSTRUCTIONS<\/u><\/strong><\/h3>\n

Step 1: 3D Print Case<\/strong><\/h3>\n

Download the 3D-printable case here: <\/b>https:\/\/bit.ly\/2TxaxFv<\/b><\/a>\u00a0<\/b><\/p>\n

This case is designed to be printed in two pieces that clip together.\u00a0<\/span><\/p>\n

The print is designed for the following settings:<\/span><\/p>\n