License

TAPR Open Hardware License

Recommend Projects

Nettigo Air Monitor HECA (Heating Element Control Assembly)

9 months ago 369
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

PTC Heating Element Control

In this design we used precise temperature and humidity sensor from Sensirion: SHT30 or SHT31 connected via I2C. Sensors are equipped with ALERT output. This output is connected to N-channel MOSFET and controls PTC Heating Element. Huge advantage of this design is ALERT logic which can be programmed via I2C and it's independent from main micro controller. In other words apart of sensor initialization it doesn't require any action from main micro controller.

Usage

  • PTC Heating element connect to connector marked as PTC HE (from SHT side)
  • I2C cable connect to SCL, SDA, 3V3 and GND
  • Heating element power supply connect to PTC and GND. PTC is positive terminal. Heating element supports from 5V to 12V.
  • I2C address is set to 0x44 permanently. On this board layout this address can not be changed. Track between SHT address pin is connected to GND directly under sensor chip itself.

Project support

If you would like to support this project consider buying assembled module form Nettigo.pl or Nettigo.eu.

License

  • This project is licensed under TAPR Open Hardware License.
  • Project author: Krzysztof Daszuta (Nettigo.pl)
  • Project founder: Witold Rugowski (Nettigo.pl)

Documents

Nettigo Air Monitor HECA

Nettigo Air Monitor HECA 0.1.0 (D30)

Nettigo Air Monitor HECA 0.1.1 (D29)

Nettigo Air Monitor HECA 0.1.2 (D29)

Nettigo Air Monitor HECA 0.1.2 (D29) - PANEL

Nettigo Air Monitor HECA 0.1.3 (D29)

Nettigo Air Monitor HECA 0.1.3 (D29) - PANEL

BOM

None

Attachments

None
Success
The owner does not allow comments in this project now

Comments (0)

goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.