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  • Author Author: tomaja
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In the Air Design Challenge - Pollen & Allergen Sensing – Post 5 (InTheAir Power Board)

tomaja

Previous posts:

In the Air Design Challenge - Pollen & Allergen Sensing

In the Air Design Challenge - Pollen & Allergen Sensing – Post 1 (Pollen Sensor)

In the Air Design Challenge - Pollen & Allergen Sensing – Post 2

In the Air Design Challenge - Pollen & Allergen Sensing – Post 3 (AirVantage Intro)

In the Air Design Challenge - Pollen & Allergen Sensing – Post 4 (Preparing the InTheAir Power Board)

 

This time I will provide just a small update on the solar power PCB.

I will send it out for fabrication to WE Direkt in a couple of days. Based on the quote on Wuerth site, PCB should arrive in 9-10 days after I order them.

 

In the meantime, I made some design change. Since there are preset versions of TPS61200 I decided to use them for both 3.3V and 5V supply.

Please keep in mind that I'm not a professional so there may be some fundamental design faults. Comments and directions from professionals are more than welcome.

Here's my PCB design for the solar power board:

image

 

Eagle files can be found in the attached .zip archive but I also created a BitBucket repository: https://bitbucket.org/tomaja/intheair-solar-power-board

Please note that I didn't set resistor values for BQ25504 voltage dividers (ROV, RUV and ROK) since these values depend on battery type and desired limits.

 

I will soon provide the link to cross-platform InTheAir client application source code - it's still not good enough to be published.

 

Thanks,

Dragan

Attachments:
SolarPower.zip