Göran NordahlAfter some thought the project name RadioBeacon was dumped for Local Positioning System - LPS. Lessons learned with RadioBeacon v1.0 was implemented in LPS v1.1:
- No PCB under the DWM1000 antenna.
- Need for a slightly wider PCB to get better antenna performance.
- Need for level shift between the 5V I/O in use by ATmega328P and the 3.3V preferred by DWM1000.
- Added an accelerometer to enable deep sleep modes for tags not being in motion to save power.
The updated schematic, assembly drawing and BOM:
http://www.loligo.se/navigation/LPS_v1.1_150409.pdf
PCB animation:
http://www.loligo.se/navigation/LPS_v1.1.WMV
Discussions
Become a Hackaday.io Member
Create an account to leave a comment. Already have an account? Log In.
In this case it the GND plane is on plane 2 out of 4. There are many things affecting the performance. If you are having problems with your own design it can as well be due to decoupling, layout etc.
Are you sure? yes | no
Hi.
First, sorry for my english.
About this topic: "Need for a slightly wider PCB to get better antenna performance."
This perfomance gain is result of increasing GND layer in PCB bottom?
Thank you.
Are you sure? yes | no