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STD I2C MCP23017 expander copy
No Profile
License: GPL 3.0
Project source: Cloned from I2C MCP23017 expander
Description
I2C expander for esp8266 wemos based on MCP23017 chip.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity | Mounted | |
|---|---|---|---|---|---|---|
| 1 | 560R | R3,R2,R1,R0,R7,R6,R5,R4 | 0805 | 8 | Yes | |
| 2 | DEGSON Screw Terminal 3.5mm 2P | X3,X2,X1,X0,DC12V,X7,X6,X5,X4,DOUT1,DOUT2,DOUT3,DOUT4 | 1X2-3.5MM | 13 | Yes | |
| 3 | VDG/S-03HG-R | DIP1 | VDG/S-03HG-R | 1 | Yes | C52648 |
| 4 | WEMOS_WEMOS | U6 | WEMOS_D1 MINI V2 | 1 | Yes | |
| 5 | MCP23017-ESP | U3 | DIP28 | 1 | Yes | |
| 6 | DC-DC_7-28V_To_5V_Step_Down_Power_Supply_Module | U4 | DC-DC 5V 3A | 1 | Yes | |
| 7 | WJ2EDGVC-5.08-3P | 1-WIRE,P1 | WJ2EDGVC-5.08-3P | 2 | Yes | C8430 |
| 8 | 4k7 | R8 | 0805 | 1 | Yes | |
| 9 | Header-Male-2.54_1x4 | I2C | DIP-1X4P-2.54MM-M | 1 | Yes | C124378 |
| 10 | Header-Female-2.54_1x6 | SPI | HDR-6X1/2.54 | 1 | Yes | C40877 |
| 11 | 10K | R25,R26 | 0805 | 2 | Yes | |
| 12 | 4.7KΩ | RN1,RN2,RN3 | SIP-5 | 3 | Yes | C11392 |
| 13 | PC847 | U1,U2 | DIP-16_W7.62MM | 2 | Yes | |
| 14 | SRD-05VDC-SL-C | RELAY1,RELAY2,RELAY3,RELAY4 | RELAY-SL-SRD | 4 | Yes | C35449 |
| 15 | 2N2222 | T1,T2,T3,T4 | TO92-EBC-OVAL | 4 | Yes | |
| 16 | 1k | RB1,RB2,RB3,RB4 | AXIAL 0.3/0.65/1.5 | 4 | Yes | |
| 17 | 1N4148W | D1,D2,D3,D4 | SOD-123 | 4 | Yes | C81598 |
| 18 | 2A5Y3UD09 LED | LED1,LED2,LED3,LED4 | LED-2*5*7 | 4 | Yes | C3651 |
| 19 | 470R | R21,R22,R23,R24 | 0805 | 4 | Yes |
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