Comms
About the Comms PCB
Comms is an open source PCB design by dj505, published on GitHub. It is a 2-layer board measuring 51.4 × 32.3 mm, with 12 components from 9 distinct parts.
Other key parts include the SP3485EN. By type, the board carries 4 connectors, 3 jumpers, 3 resistors, 1 IC and 1 capacitor.
From the project
A PIU pad lighting upgrade kit, featuring a 5x5 RGB LED grid
The "Comms" addon is meant to allow each panel to communicate robustly using RS485 through SP3485 chips to synchronize lighting patterns and other settings.
Main components on the Comms
Comms bill of materials (BOM)
12 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SP3485EN | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 2 | Conn_01x02 | JST_XH_S2B-XH-A_1x02_P2.50mm_Horizontal | J1, J3 |
| 1 | Conn_02x06_Odd_Even | PinHeader_2x06_P2.54mm_Vertical | J2 |
| 1 | Conn_01x01 | PinHeader_1x01_P2.54mm_Vertical | J4 |
| 1 | Jumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 2 | Jumper_2_Bridged | SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2, JP3 |
| 1 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 2 | 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R5 |
| 1 | 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
Comms design files
The KiCad project lives in the dj505/Pad-Light-Kit repository on GitHub; these links point at the commit this page was built from.
- LayoutAddons/Comms/Comms.kicad_pcb
- SchematicAddons/Comms/Comms.kicad_sch
Comms: common questions
How big is the Comms PCB?
The Comms measures 51.4 × 32.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Comms?
12 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Comms design files?
From the dj505/Pad-Light-Kit repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Comms design in my own project?
The repository has no license, so all rights stay with dj505. Use it as a reference, and ask the author before reusing the design.
