Many485
Many485 is an open source STM32 PCB design by eddyem: a 2-layer, 80 × 84 mm board with 107 components (36 distinct parts). It is built around the ISO1050DUB, MAX3232, ISO3086, LM1117MP-3.3 and more. Filed under sensors.
Code samples and ready projects based on bare-metal STM32
Multiport board ====================================
- 1 CAN - 3 RS-485 - 2 or 1 RS-232 - 1 SSI or 1 RS-422 (in this case only one RS-232)
1. RS-485 (1) 2. RS-485 (2) 3. RS-485 (3) 4. RS-232 (1) 5. RS-232 (2) or RS-422 (by jumpers) 6. CAN 7. SSI (over SPI, by jumpers) or configuration interface (if "Config mode" jumper opened)
- IF1: RS-485 over USART3. - IF2: RS-485 over USART1. - IF3: RS-485 over USART2. - IF4: RS-232 over UART4. - IF5: RS-232 or RS-422 (by jumpers "IF5" and "SSI") over UART5. - IF6: CAN bus. - IF7: SSI (inaccessible when RS-422 selected) or interface for device…
Built around
Parts list
107 components, 36 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ISO1050DUB | SOP-8_6.62x9.15mm_P2.54mm | U1 |
| 1 | MAX3232 | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | ISO3086 | SOIC-16W_7.5x10.3mm_P1.27mm | U3 |
| 1 | LM1117MP-3.3 | SOT-223-3_TabPin2 | U4 |
| 1 | USBLC6-2SC6 | SOT-23-6 | U5 |
| 1 | STM32F303RBT6 | LQFP-64_10x10mm_P0.5mm | U6 |
| 3 | ISO3088DW | SOIC-16W_7.5x10.3mm_P1.27mm | U7, U8, U9 |
| 4 | H11L1 | DIP-6_W7.62mm | U10, U11, U12, U13 |
| 1 | AO3401 | SOT-23_Handsoldering | Q1 |
| 5 | B0505S-1W | B0x0xS | Q2, Q3, Q5, Q6, Q7 |
| 1 | B0505S-2W | B0505S-2W | Q4 |
| 1 | 8MHZ 8MHz | Crystal_HC49-U_Vertical | Y1 |
| 6 | TERM_3 Term_3 | TerminalBlock_Phoenix_MKDS-1,5-3_1x03_P5.00mm_Horizontal | J6, J7, J8, J12, J13, J14 |
| 1 | SCREW_TERMINAL_01X02 Screw_Terminal_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J9 |
| 1 | USB_B | USB_B_OST_USB-B1HSxx_Horizontal | J11 |
| 6 | 0.5A | Fuse_1206_3216Metric | F1, F2, F3, F4, F5, F6 |
| 5 | Jumper_3_Open | PinHeader_1x03_P2.54mm_Vertical | JP1, JP2, JP4, JP5, JP6 |
| 1 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP3 |
| 1 | SW_DIP_X01 SW_DIP_x01 | SW_DIP_SPSTx01_Slide_6.7x4.1mm_W7.62mm_P2.54mm_LowProfile | SW1 |
| 3 | SW_Push | SW_SPST_FSMSM | SW2, SW3, SW4 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PESD1CAN | SOT-23 | D1 |
| 4 | SMAJ15CA | D_SMA | D2, D3, D4, D5 |
| 5 | SM712_SOT23 | SOT-23 | D6, D8, D10, D11, D12 |
| 2 | 1N5817 | D_SMA-SMB_Universal_Handsoldering | D7, D9 |
| 3 | 0.47 | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C6, C8 |
| 4 | 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C9, C14, C15 |
| 22 | 0.1 | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C5, C7, C10, C11, C13, C16 +14 |
| 1 | 22U 22u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12 |
| 2 | 12 | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C19, C20 |
| 1 | 120 | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R1 |
| 8 | 510 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R4, R5, R6, R7, R8, R9 |
| 3 | 10K 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R14, R16 |
| 3 | 22 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R13, R15 |
| 1 | 1K5 1k5 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12 |
| 1 | 330 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17 |
| 1 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
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