License

GPL 3.0

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I2C MCP23017 expander copy

1 year ago 878
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

I2C expander for esp8266 wemos based on MCP23017 chip.

Documents

MCP23017 Inputs copy

Outputs copy

MCP23017 IO expander copy

BOM

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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