Led sign
About the Led sign PCB
Led sign is an open source Nordic nRF PCB design by 3nt3, published on GitHub. It is a 2-layer board measuring 76.8 × 72.2 mm, with 58 components from 26 distinct parts.
Its main chip is the nRF52832-QFxx, from the Nordic nRF family. Other key parts include the TP4056-42-ESOP8, LP5907MFX-3.3 and LP5024. By type, the board carries 28 capacitors, 11 resistors, 7 ICs, 3 diodes, 2 connectors and 2 switches.
Main components on the Led sign
Led sign bill of materials (BOM)
58 components, 26 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | nRF52832-QFxx | QFN-48-1EP_6x6mm_P0.4mm_EP4.6x4.6mm | U1 |
| 1 | TP4056-42-ESOP8 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U2 |
| 1 | LP5907MFX-3.3 | SOT-23-5 | U3 |
| 4 | LP5024 | LP5024 | U6, U7, U8, U9 |
| 1 | PMOS | SOT-23_Handsoldering | Q1 |
| 1 | Crystal_GND24_Small | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | USB_C_Receptacle | USB-C-SMD_MC-311D | J1 |
| 1 | Conn_01x03_Socket | JST_SH_SM03B-SRSS-TB_1x03-1MP_P1.00mm_Horizontal | J2 |
| 1 | PCB Antenna | Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | Battery | JST_SH_SM02B-SRSS-TB_1x02-1MP_P1.00mm_Horizontal | BT1 |
| 2 | SW_Push | SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL_H1.5 | SW1, SW2 |
| 2 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder_Triangle | D1, D2 |
| 1 | D_Schottky | D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
| 1 | 3n9 | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 6 | 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C23, C26, C29, C32 |
| 7 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C4, C11, C21, C24, C27, C30 |
| 2 | 12p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C6 |
| 1 | 4u7 | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 10 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9, C12, C14, C15, C16, C22, C25 +2 |
| 1 | 100p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10 |
Show 6 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 0.8p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13 |
| 1 | 1K1 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 2 | 5K1 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3 |
| 2 | 1K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5 |
| 4 | 10K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R7, R8, R9 |
| 2 | 1M | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11 |
Led sign design files
The KiCad project lives in the 3nt3/led-sign repository on GitHub; these links point at the commit this page was built from.
Led sign: common questions
What microcontroller does the Led sign use?
The Led sign is built around the nRF52832-QFxx, from the Nordic nRF family.
How big is the Led sign PCB?
The Led sign measures 76.8 × 72.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Led sign?
58 components, from 26 distinct parts. The full bill of materials is listed on this page.
Where can I download the Led sign design files?
From the 3nt3/led-sign repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Led sign design in my own project?
The repository has no license, so all rights stay with 3nt3. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Led sign without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.
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