# The TicTac Node

> For TTN Mapper I found the perfect housing, even programming is still possible. The node is based on an Arduino Pro Mini with 3.3V. The battery voltage of a 186

- Type: Community update
- Community: [The Things Network Köln](https://www.thethingsnetwork.org/community/koln/)
- Author: Reinhard Nickels
- Published: 2017-06-20
- Web page: https://www.thethingsnetwork.org/community/koln/post/the-tictac-node

For TTN Mapper I found the perfect housing, even programming is still possible.
The node is based on an Arduino Pro Mini with 3.3V. The battery voltage of a 18650 LiIon cell is regulated to 3.3V with a HT7333, a low dropout, low quiescent voltage regulator.
![file](https://www.thethingsnetwork.org/media/md_editor/image-1497975038710.large.JPG)
![file](https://www.thethingsnetwork.org/media/md_editor/image-1497974787370.large.JPG)