Quantity   Component name
1 × ATMega328P-PU or ATMega328PB With boatloader and settings to use internal 8MHz oscillator
1 × 10K Ohm resistor For pull up of reset pin
1 × 4.7nF capacitor Small filter function
3 × 100nF capacitor For AREF pin 21 to GND and between VCC & GND and AVCC & GND
1 × 1N5819 Schottky diode To block reverse flow (there are better alternatives with lower Fv and better blocking)
1 × Solar panel 6V 3.5W 110x60mm With voltage drop of diode the maximum voltage shouldn't exceed the 5.3V, below super cap maximum!
2 × 2.7V 10F supercapacitors Used in parallel as alternative for 5.5V 4F super cap
1 × MCP1700-3302E Power Management ICs / Linear Voltage Regulators and LDOs
1 × MCP1700-5002E Power Management ICs / Linear Voltage Regulators and LDOs
4 × 1uF electrolytic capacitor 50V 1uF capacitors needed on in- and ouput of MCP1700 according to datasheet
1 × Microchip RN2483 Certified low-power LoRa tranceiver module