Public Domain
Eight digit, seven segment LED display driver based on Wemos D1 mini and MAX7219 LED driver chip. The D1 mini is setup as a WIFI access point and webserver. Scoreboard is updated from web interface on mobile device. LED segments are driven at 12V up to 40mA to suit display built from popular LED strip. Arduino sketch and data for scoreboard application is attached.
| ID | Name | Designator | Footprint | Quantity | Mounted | |
|---|---|---|---|---|---|---|
| 1 | MAX7219 | IC1 | DIP24-2.54-30.6X7.62MM | 1 | Yes | C29160 |
| 2 | 470 | R1,R2,R3,R4 | AXIAL-0.4 | 4 | Yes | C58697 |
| 3 | 470 | R5,R6,R7,R8 | AXIAL-0.4 | 4 | Yes | C58706 |
| 4 | Header-Male-2.54_1x8 | JP1,JP2 | HDR-8X1/2.54 | 2 | Yes | C49256 |
| 5 | 47k | R9 | AXIAL-0.4 | 1 | Yes | C58696 |
| 6 | 74HC540 | IC3 | DIP20 | 1 | Yes | undefined |
| 7 | MIC2981 | IC2 | DIP18 | 1 | Yes | undefined |
| 8 | 100n | C3,C4,C1,C6,C7 | CERAMIC-2.54 | 5 | Yes | C26856 |
| 9 | ULN2803A | IC4 | DIP18 | 1 | Yes | C5252 |
| 10 | 10uF | C2 | CAP-D5.0XF2.0 | 1 | Yes | C78759 |
| 11 | Wemos D1 Mini | MC1 | WEMOS D1 MINI V2 | 1 | Yes | |
| 12 | Wemos D1 Mini Power Shield | MC2 | WEMOS D1 MINI DC POWER SHIELD | 1 | Yes | |
| 13 | 470u | C5 | CAP-D8.0XF3.5 | 1 | Yes | C44593 |
| 14 | SN74HCT125D | IC5 | DIP14 | 1 | Yes | |
| 15 | Header-Male-2.54_1x2 | JP3 | HDR-2X1/2.54 | 1 | Yes | C36717 |
| 16 | 4.7k | R11,R10 | AXIAL-0.4 | 2 | Yes | |
| 17 | Header-Male-2.54_1x4 | JP4 | HDR-4X1/2.54 | 1 | Yes | C59481 |
| 18 | 7-SEGMENT-DISPLAY | U1,U2,U3,U4,U5,U6 | 7-SEGMENT-1PTH | 6 | Yes | |
| 19 | Female headerHDR1X8-2.54 | JP1-1,JP2-1 | HDR-8X1/2.54 | 2 | Yes | C27438 |
| 20 | 2.54-1*2PFemale | JP3-1 | HDR-1X2/2.54 | 1 | Yes | C49661 |
| 21 | Switch3x4x2 | KEY1 | KEY-3.0*4.0 | 1 | Yes | C26638 |
| 22 | Female header pitch2.54mm | JP4-1 | HDR-4X1/2.54 | 1 | Yes | undefined |
| 23 | DHT12 | S1 | DHT12 | 1 | Yes | undefined |
Comments (0)