Quantity | Component name | |
1 | × | Sparkfun ESP32 Thing Microcontroller board with some I/O and Wifi onboard. Available at https://www.sparkfun.com/products/13907 |
1 | × | Solarmodule 12V 20W Solarmodule rated at 12V for at least 20W (peak), e.g. Süd SOLAR GmbH Art.Nr.03120. Available at e.g. Amazon. |
2 | × | Micro USB cables One to cut for pieces and one to power ESP32 |
1 | × | USB Battery pack Standard USB Battery Pack that supports charging and discharging at the same time. |
1 | × | DC-DC Step Up Boost 5V to 12V DC-DC Step Up converter to transform the USB Battery 5V to 12V required for LEDs. Available on e.g. Ebay. |
1 | × | XL6009 DC Step Up Down Converter Adjustable Step Up Down converter to transform the varying solarmodule voltage into 5V for charging the USB Batterypack. Available on e.g. Ebay. |
1 | × | LEDs LEDs to illuminate the art piece at night. |
1 | × | LDR Light dependant resistor to detect day/night. |
1 | × | Resistor 10kOhm resistor for connecting the LDR to the ESP32 Thing. |
1 | × | Mosfet Mosfet to switch the LEDs, e.g. IRF3707Z. |