Pmod-7seg4
About the Pmod-7seg4 PCB
Pmod-7seg4 is an open source PCB design by fm4dd, published on GitHub. It is a 2-layer board measuring 34.5 × 52 mm, with 22 components from 6 distinct parts.
Other key parts include the OSL40391-IRA. By type, the board carries 13 resistors, 5 transistors, 2 connectors and 1 IC.
From the project
Quad-row PMOD with four multiplexed seven-segment LED digits.
This PMOD provides a multiplexed four-digit 7-segment LED display output to FPGA designs via two double-row PMOD ports (quad-row). The 7-segment display type "common anode" requires to use inverse logic. With inverse logic, setting the output "LOW" lights up the LED segment. Each digit has its own common anode, but the seven LED segments are shared. To display separate numbers on each digit, the program cycles through each anode with the apropriate segments enabled for this digit.
Main components on the Pmod-7seg4
Pmod-7seg4 bill of materials (BOM)
22 components, 6 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | OSL40391-IRA 7SEG_OSL40391 OptoSupply | 7SEG-OSL40391 | U1 |
| 5 | 2N3906BU 2N3906 ON Semiconductor | TO-92_Inline | Q1, Q2, Q3, Q4, Q5 |
| 2 | PEC20DBAN PMOD Sullins Connector Solutions | PMODHeader_2x06_P2.54mm_Horizontal | J1, J2 |
| 1 | — | 7seg-type-display | 7seg-type-display |
| 8 | RNMF14FTC470R 330 Stackpole Electronics Inc | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 |
| 5 | RNMF14FTC10K0 10K Stackpole Electronics Inc | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R9, R10, R11, R12, R13 |
Pmod-7seg4 design files
The KiCad project lives in the fm4dd/pmod-7seg4 repository on GitHub; these links point at the commit this page was built from.
- Layoutkicad/7seg4.kicad_pcb
- BOM7seg4-bom.csv
Pmod-7seg4: common questions
How big is the Pmod-7seg4 PCB?
The Pmod-7seg4 measures 34.5 × 52 mm, has 2 copper layers and is 0.8 mm thick.
How many components are on the Pmod-7seg4?
22 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Pmod-7seg4 design files?
From the fm4dd/pmod-7seg4 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Pmod-7seg4 design in my own project?
The repository has no license, so all rights stay with fm4dd. Use it as a reference, and ask the author before reusing the design.