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STD ExpressLRS_JP_R900_STM32
License: Public Domain
Mode: Editors' pick
- 2
Update time：
2021-08-01 04:03:27
Creation time：
2021-02-16 00:59:47
Description
Based on a popular open source radio express LRS data collation.
The hardware prototype is jumper r900mini, with the measure of area 23mm * 16mm. All components are packaged in 0603 package, which reduces the difficulty of welding and ensures the minimum cost.
Rfm95 module, stm32f103c8t6, ircuit verification has passed
Remove the definition of external EPPROM pin
Open source project address: https://github.com/AlessandroAU/ExpressLRS
Discussion group:https://discord.gg/dS6ReFY
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 22P | C1,C2 | C 0603_L | 2 |
| 2 | 104 | C3,C6,C7,C8,C9,C10,C11 | C 0603_L | 7 |
| 3 | 106 | C4,C5 | C 0805_L | 2 |
| 4 | 915M天线接口 | JP1 | IPEX | 1 |
| 5 | HDR-1X4 | JP2 | HDR2.54-WS-4P | 1 |
| 6 | HDR-1X3 | JP3 | J-LINK - 3 | 1 |
| 7 | RED | LED1,LED2 | 0603LED | 2 |
| 8 | 10K | R1 | R 0603_L | 1 |
| 9 | 470 | R2,R3 | R 0603_L | 2 |
| 10 | 20K | R4 | R 0603_L | 1 |
| 11 | 300 | R5 | R 0603_L | 1 |
| 12 | 100 | R6,R7 | R 0603_L | 2 |
| 13 | BIND | SW1 | SW-SMD_2PIN-L4.10-W3.10-L - DUPLICATE | 1 |
| 14 | RFM95 | U1 | RFM95_L | 1 |
| 15 | STM32F103C8 | U2,U1 | LQFP48 7X7_L | 2 |
| 16 | ME6211 | U3 | SOT23-5L | 1 |
| 17 | 12M | X1 | OSC 4025-4P | 1 |
| 18 | 22P | C1,C2 | C0603A | 2 |
| 19 | 106 | C3,C8 | C0805A | 2 |
| 20 | 104 | C4,C5,C6,C7,C9 | C0603A | 5 |
| 21 | 0603_LED_D | D1 | LED100 | 1 |
| 22 | HDR-1X4 | JP2 | RC4P | 1 |
| 23 | HDR-1X2 | JP4 | JUMPER_0805_2 | 1 |
| 24 | 10K | R1 | R0603A | 1 |
| 25 | 470 | R2,R3 | R0603A | 2 |
| 26 | 100 | R4,R5 | R0603A | 2 |
| 27 | 20K | R6,R7 | R0603A | 2 |
| 28 | E19-900M20S | U2 | EBYTE_LORA_22PIN_15X15 | 1 |
| 29 | ME6211 | U3 | SOT23-5A | 1 |
| 30 | 12M | X1 | OSC | 1 |
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