© 2023 EasyEDA Some rights reserved
Editor Version
×
Standard
1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
Profession
1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 30,000 devices or 100,000 pads
3.More rigorous design constraints, more standardized processes
4.For enterprises, more professional users
Description
I2C expander for esp8266 wemos based on MCP23017 chip.
Design Drawing
schematic diagram
（
1
/
）
PCB
（
1
/
）
The preview image was not generated, please save it again in the
editor.
| 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 |
Unfold
Project Members
0
0
Collect to album
Related Projects
Change a batch
Loading...
Add to album
×
Loading...
reminder
×
Do you need to add this project to the album?