Greatโletโs design a compact, integrated PCB that brings together:
* ** ESP8266 NodeMCU board **
* ** TP4056 Li - ion charging module **
* ** 2000โฏmAh Li - ion battery connector **
* ** 3.3โฏV regulator(LDO) **
* ** 1.8โณ SPI TFT display(128ร160) ** with optional SD - card support
---
### ๐ Power Architecture
```
Li-ion Battery (2000โฏmAh)
โโโ B+ / Bโ โโ TP4056 (charging & protection module)
โโ OUT+ โ LDO IN (e.g. HT7333 or AMS1117โ3.3)
โโ OUTโ โ GND
LDO OUT โ 3.3โฏV Power Rail โ ESP, TFT VCC, SD card VCC, backlight LED
```