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STD WISDEC16 with ATmega328P
License: MIT
Mode: Editors' pick
- 1
Update time：
2021-07-12 08:11:53
Creation time：
2017-07-20 18:49:34
Description
This project uses the AtMega328P-PU as processor. Input is the DCC signal used in model railroading projects.
There are 16 MosFet driven outputs, separated from the AtMega by optocouplers (if you want separation).
A 5V power unit is integrated; it can get it's power from DCC or from a separate power supply.
There are a lot of LEDs in the circuit diagram, but you can leave a lot of them (and the accompanying resistors) out.
Design Drawing
schematic diagram
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WisDec21
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WisDec22
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WisDec23
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WisDec24
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WisDec25
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PCB
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New PCB 1 - 55 routing test
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New PCB 1 - 55 routing test 1st version
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New PCB 1 - 55 routing test 2nd version
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PCB_2
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | ATmega328P-AU_WvB | ATM328P | ATMEGAXP-X-32-VIAS | 1 |
| 2 | 100nF 50V | C11,C13 | C0603 | 2 |
| 3 | 100uF 6.3V | C12 | CAP-SMD_L3.5-W2.8 | 1 |
| 4 | 100nF (104) 16V X7R | C14,C15 | C0402 | 2 |
| 5 | SM4007PL | D01,D02,D03,D04,PD1 | SOD-123F_L2.8-W1.8-LS3.7-RD | 5 |
| 6 | Female header1*2P | DC1,DC2,DC3,DC4 | HDR-TH_2P-P2.00-V | 4 |
| 7 | 78L05S | DR1 | SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | 1 |
| 8 | H01 | H01 | 1.27-1*3P-MOD | 1 |
| 9 | H02 | H02 | 1.27-1*3P-MOD | 1 |
| 10 | Header-Male-2.54_1x1 | IC1,IC2,IC3,IC4,IC5,IC6 | HDR-M-2.54_1X1 | 6 |
| 11 | SOLDERJUMPER_NOT_WvB | J01,J02 | SJ_2S-NO | 2 |
| 12 | SOLDERJUMPER_2WAYS | J12,J34 | SJ_3 | 2 |
| 13 | K01 | K01 | 1.27-1*3P-MOD | 1 |
| 14 | K02 | K02 | 1.27-1*3P-MOD | 1 |
| 15 | WS2812E | L01,L02 | LED-SMD_4P-L5.0-W5.0-BR | 2 |
| 16 | LED-0603_G | L16 | LED0603_GREEN | 1 |
| 17 | P01 | P01 | 1.27-1*4P-MOD | 1 |
| 18 | P02 | P02 | 1.27-1*4P-MOD | 1 |
| 19 | 220 | R01,R03 | R0402 | 2 |
| 20 | 150 | R02,R04 | R0402 | 2 |
| 21 | 100k | R11 | R0402 | 1 |
| 22 | 10K | R12 | R0402 | 1 |
| 23 | 1.2K | R16 | R0402 | 1 |
| 24 | CSTNE16M0V530000R0 | XT1 | CSTCE16M0V53-R0 | 1 |
| 25 | MM5Z4V7T1G | ZD1 | SOD-523F_L1.7-W0.9-LS1.7-RD | 1 |
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