# Temperature Sensor for Radiant Floor Heat **URL:** \ **Category:** Devices & Integrations\ **Tags:** heater, temperature\ **Created:** [October 26, 2018, 3:04pm UTC](https://community.smartthings.com/t/temperature-sensor-for-radiant-floor-heat/140462 "2018-10-26T15:04:31Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![dvavra55](https://avatars.discourse-cdn.com/v4/letter/d/f9ae1b/32.png) [@dvavra55](https://community.smartthings.com/u/dvavra55)\ **Post date:** [October 26, 2018, 3:04pm UTC](https://community.smartthings.com/t/temperature-sensor-for-radiant-floor-heat/140462/1 "2018-10-26T15:04:31Z")
Hello, I’ve been searching around trying to find a temperature sensor to monitor my radiant floor heat system. All I’m looking to do is monitor the actual temperature of the floor in SmartThings. I’m currently trying to use a SmartThings multi sensor but I think its just giving me the ambient temperature of the room. Does anyone know of a product that is a smart temperature contact sensor? ---
**Author:** ![ogiewon](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/ogiewon/32/13743_2.png) [@ogiewon](https://community.smartthings.com/u/ogiewon)\ **Post date:** [October 27, 2018, 9:26pm UTC](https://community.smartthings.com/t/temperature-sensor-for-radiant-floor-heat/140462/2 "2018-10-27T21:26:36Z")
You could use a typical zigbee leak sensor, as those also monitor temperature. You would need a small styrofoam box to cover it to avoid ambient air temperature impacting the readings. Not exactly a contact temperature measurement, but that is the smallest battery powered device that comes to mind. Although, probably not much different than your ST Multi Sensor. If you’re a tinkerer, you could easily build a temperature sensor using my ST\_Anything software, running on a small ESP8266 microcontroller, and connected to a DS18B20 temperature sensor (or similar.) Let me know if you like to try this path, as I’d be happy to assist you. > [@\[DEPRECATED\] ST\_Anything - Arduino/ESP8266/ESP32](https://community.smartthings.com/t/release-st-anything-v2-9-2-arduino-esp8266-esp32-to-st-via-thingshield-ethernet-or-wifi/77707): > > UPDATE 2022-08-17 - Per [this recent SmartThings announcement, the Groovy IDE will disabled on September 30, 2022](https://support.smartthings.com/hc/en-us/articles/7055691183380?mc_cid=75421954c8&mc_eid=574074d8e5). My best guess is that any existing ST\_Anything devices will probably cease to operate at this time, or shortly thereafter. It has been a good 7+ year run for ST\_Anything users. I want to thank you all for making ST\_Anything a successful project! My son and I really had a lot of fun creating it together, and have enjoyed hearing how you have all used it in so many creative ways. As many of you probably already know, I have moved on from ST and have [ported ST\_Anything over to Hubitat as “HubDuino”](https://community.hubitat.com/t/release-hubduino-v1-1-9-hubitat-to-arduino-esp8266-esp32-thingshield-integration-st-anything/399?u=ogiewon). If you have devices running ST\_Anything that you ‘can’t live without,’ at least you know you have options. Another option for ESP8266/ESP32 users would be to use ESPHome along … ---
**Author:** ![dvavra55](https://avatars.discourse-cdn.com/v4/letter/d/f9ae1b/32.png) [@dvavra55](https://community.smartthings.com/u/dvavra55)\ **Post date:** [October 28, 2018, 12:23pm UTC](https://community.smartthings.com/t/temperature-sensor-for-radiant-floor-heat/140462/3 "2018-10-28T12:23:43Z")
Thanks for the idea ogiewon. I’e done a few things with a raspberrypi, so I’m happy to try the diy route. I am not getting the accurate readings i was hoping from the ST multi sensor. I’ll have to pickup an ESP8266 microcontroller and a DS18B20 to play around with. I have never heard of these boards. ---
**Author:** ![ogiewon](https://yyz2.discourse-cdn.com/smartthings/user_avatar/community.smartthings.com/ogiewon/32/13743_2.png) [@ogiewon](https://community.smartthings.com/u/ogiewon)\ **Post date:** [October 28, 2018, 12:29pm UTC](https://community.smartthings.com/t/temperature-sensor-for-radiant-floor-heat/140462/4 "2018-10-28T12:29:25Z")
> [@dvavra55](#): > > I’ll have to pickup an ESP8266 microcontroller and a DS18B20 to play around with. I have never heard of these boards. Here is the NodeMCU ESP8266 board that I typically recommend. It is inexpensive and the most reliable WiFi connected board that I have used with ST\_Anything. You’ll also need some 4.7k resistors to wire them up. [https://www.amazon.com/dp/B010O1G1ES/ref=twister\_B0783HX3WP?\_encoding=UTF8&psc=1](https://www.amazon.com/dp/B010O1G1ES/ref=twister_B0783HX3WP?_encoding=UTF8&psc=1) An here are the DS18B20 temperature sensors that I would recommend. (Or similar… these are not exactly flat, but they do work very well, and are waterproof.) [https://www.amazon.com/Gikfun-DS18B20-Temperature-Waterproof-EK1083x3/dp/B012C597T0/ref=sr\_1\_5?s=electronics&ie=UTF8&qid=1540729642&sr=1-5&keywords=Waterproof+DS18B20](https://www.amazon.com/Gikfun-DS18B20-Temperature-Waterproof-EK1083x3/dp/B012C597T0/ref=sr_1_5?s=electronics&ie=UTF8&qid=1540729642&sr=1-5&keywords=Waterproof+DS18B20) And you many want a breadboard for prototyping. It makes temporarily wiring everything up much easier. [https://www.amazon.com/EL-CP-003-Breadboard-Solderless-Distribution-Connecting/dp/B01EV640I6/ref=sr\_1\_5?s=electronics&ie=UTF8&qid=1540729880&sr=1-5&keywords=arduino%2Bbreadboard&th=1](https://www.amazon.com/EL-CP-003-Breadboard-Solderless-Distribution-Connecting/dp/B01EV640I6/ref=sr_1_5?s=electronics&ie=UTF8&qid=1540729880&sr=1-5&keywords=arduino%2Bbreadboard&th=1) And you’ll probably want some of these jumper wires (or similar) as well… [https://www.amazon.com/Elegoo-EL-CP-004-Multicolored-Breadboard-arduino/dp/B01EV70C78/ref=pd\_bxgy\_147\_2?\_encoding=UTF8&pd\_rd\_i=B01EV70C78&pd\_rd\_r=6ed83309-daad-11e8-8a27-e7c97784a407&pd\_rd\_w=MN7HV&pd\_rd\_wg=Dlb1s&pf\_rd\_i=desktop-dp-sims&pf\_rd\_m=ATVPDKIKX0DER&pf\_rd\_p=6725dbd6-9917-451d-beba-16af7874e407&pf\_rd\_r=1WKGBPJRG050ECGBN08V&pf\_rd\_s=desktop-dp-sims&pf\_rd\_t=40701&psc=1&refRID=1WKGBPJRG050ECGBN08V](https://www.amazon.com/Elegoo-EL-CP-004-Multicolored-Breadboard-arduino/dp/B01EV70C78/ref=pd_bxgy_147_2?_encoding=UTF8&pd_rd_i=B01EV70C78&pd_rd_r=6ed83309-daad-11e8-8a27-e7c97784a407&pd_rd_w=MN7HV&pd_rd_wg=Dlb1s&pf_rd_i=desktop-dp-sims&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=6725dbd6-9917-451d-beba-16af7874e407&pf_rd_r=1WKGBPJRG050ECGBN08V&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&psc=1&refRID=1WKGBPJRG050ECGBN08V)