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STD Model Railway Control System: Relay Board
License: CC-BY-SA 3.0
Mode: Editors' pick
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Update time：
2020-08-11 23:05:27
Creation time：
2020-05-30 12:08:09
Description
This is the relay board for the Model Railway control project. The software for this project can be found on [Github](https://github.com/Sidings-Media/Model-Railway-Controller).
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 2N2222 | Q12,Q13,Q23,Q22,Q21,Q20,Q19,Q18,Q17,Q16,Q15,Q14,Q24,Q11,Q1,Q10,Q9,Q8,Q2,Q7,Q6,Q5,Q4,Q3 | TO-92-3_L4.9-W3.7-P1.27-L | 24 |
| 2 | WJ126V-5.0-2P | P18,P19,P17 | WJ126V-5.0-2P | 3 |
| 3 | 7805 | U2 | TO-220-3_L10.0-W4.5-P2.54-L | 1 |
| 4 | 12MHz | X2 | HC-49US_L11.5-W4.5-P4.88 | 1 |
| 5 | 1N4001 | D8,D12,D3,D24,D6,D23,D2,D13,D22,D7,D25,D21,D11,D5,D20,D19,D18,D17,D9,D16,D1,D4,D10,D15,D14 | DO-41_BD2.4-L4.7-P8.70-D0.9-RD | 25 |
| 6 | LM317T_C434571 | U15 | TO-220-3_L10.0-W4.5-P2.54-L | 1 |
| 7 | LED-TH-3mm_G | LD1 | LED-TH_BD3.0_GREEN | 1 |
| 8 | 22pF | C1,C2,C8,C9 | RAD-0.2 | 4 |
| 9 | 0.1uF | C7,C5 | RAD-0.2 | 2 |
| 10 | 2N7000 | Q26,Q25 | TO-92-3_L4.9-W3.7-P1.27-L | 2 |
| 11 | 100µF | C3 | CAP-D3.0×F1.5 | 1 |
| 12 | 1uF | C6 | CAP-D3.0×F1.5 | 1 |
| 13 | 10µF | C4 | CAP-D3.0×F1.5 | 1 |
| 14 | micro 5P180 | USB1 | MICRO-USB-TH_U-MICRS05P-BF00 | 1 |
| 15 | ATMEGA328P-PU | U1 | DIP-28_L34.6-W7.3-P2.54-LS10.2-BL | 1 |
| 16 | CH340G | U16 | SOIC-16_L9.9-W3.9-P1.27-LS6.0-BR | 1 |
| 17 | SRD-12VDC-SD-C | K14,K12,K3,K10,K1,K2,K11,K9,K15,K16,K4,K5,K24,K23,K6,K22,K21,K17,K18,K13,K20,K8,K19,K7 | RELAY-TH_SRD-XXVDC-SD-C | 24 |
| 18 | DB126V-5.0-2P | U10,U4,U3,U12,U6,U13,U7,U11,U14,U9,U5,U8 | CONN-TH_2P-P5.00_L7.8-W10.0 | 12 |
| 19 | HDR-F-2.54_2x4 | H1 | HDR-F-2.54_2X4 | 1 |
| 20 | button6*6*8.5 | KEY1 | KEY-TH_4P-L6.0-W6.0-P4.50 | 1 |
| 21 | 16MHz | X1 | HC-49US_L11.5-W4.5-P4.88 | 1 |
| 22 | 1k | R2,R19,R7,R22,R18,R17,R10,R15,R23,R11,R20,R26,R8,R9,R5,R1,R14,R16,R13,R25,R12,R21,R3,R4,R6 | R_AXIAL-0.4 | 25 |
| 23 | 330Ω | R24,R27,R28 | R_AXIAL-0.4 | 3 |
| 24 | 220Ω | R29 | R_AXIAL-0.4 | 1 |
| 25 | 10k | R30,R31,R32,R33 | R_AXIAL-0.4 | 4 |
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