#Solar Buck-Boost
Li-Po charging module with CN3063 and TPS63020 for solar and USB power, ensures constant voltage and efficiency. By default it's configure to ouput 3.3v with power saving mode off.
Important you can use a solar panel with a maximum of 6V and minimum of 4.4v, but it's recommendable to use 5V solar panel modules
This modules allows to set the output voltage an working mode by doing some little modifications.
This module allows to set an ouput voltage by changing R4 resistor. By default it's 1M giving an ouput of 3.3v, but you can get the following ouput values.
| VOUT | R4 |
|---|---|
| 2.5V | 750K |
| 3.3V | 1M |
| 3.6V | 1.1M |
| 4.5V | 1.43M |
| 5V | 1.6M |
- Power saving mode on: Join R8.
- Power saving mode off: Join R7.
You can find a list of material with a link to the crucial one.