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Update time：
2023-01-30 10:07:34
Creation time：
2023-01-27 10:04:17
Description
Description
This project is about transferring a message through sd card with the interface of lora and arduino mega where we can display it in LCD display.
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Design Drawing
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 4*4 MATRIX KEYPAD | KEY | DIP18 | 1 |
| 2 | LCD1602 | LCD1 | LCD1602 | 1 |
| 3 | E32-900T30D | LORA | WIRELM-SMD_E220-400T30S | 1 |
| 4 | 1k | R1,R6 | R0603 | 2 |
| 5 | 4.7K | R2,R3,R4 | R0603 | 3 |
| 6 | 2.2K | R5 | R0603 | 1 |
| 7 | MP3-TF-16P2 | SDCARD | MP3-TF-16P2_C2829314 | 1 |
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