Week 1 Basic Design Introduction Mobile phone is now an essential part of our daily lives, it plays an important part in communication, photography, social networking, etc. We have all more or less encountered the situation when the battery of our phone is running low and can not find a place to charge the phone. The power bank has become popular based on this, our project aims to a deliver solar power phone charging device, i.e, a power bank with solar panels on it. With this, we would be able to extend the usable time of the power bank by charging the power bank whenever there is sunlight or when we forget to charge the power bank before leaving home. Additionally, it is environmentally friendly since solar power is renewable energy. Structure design The components included in the circuit: 1. Tp4056 chip * 1 2. 3.7V, 10.4Ah Li-ion rechargeable battery pack * 1 3. Toggle switch * 1 4. 5V solar panel * 2 5. LM2577T-ADJ * 2 6. 5V 1A micro USB charger * 1 7. 1N 5821*1 8. 100uH ind
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