Stair lights
About the Stair lights PCB
Stair lights is an open source Nordic nRF PCB design by ogruendel, published on GitHub. It is a 2-layer board measuring 61.5 × 100.3 mm, with 76 components from 37 distinct parts.
Its main chip is the C190794, from the Nordic nRF family. Other key parts include the C7473158, C2845237 and C18164398. By type, the board carries 26 resistors, 18 capacitors, 16 transistors, 5 connectors, 4 ICs and 2 diodes.
Main components on the Stair lights
Stair lights bill of materials (BOM)
76 components, 37 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C190794 nRF52840 | Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U1 |
| 1 | C7473158 TP4056-42-ESOP8 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U2 |
| 1 | C2845237 TPS63802DLAR | VSON-10 | U3 |
| 1 | C18164398 DW01A | SOT-23-6 | U4 |
| 1 | C5261052 SI2301-ZE | SOT-23 | Q1 |
| 1 | C2830320 FS8205A | SOT-23-6 | Q2 |
| 14 | C7431443 2302V | SOT-23 | Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 +6 |
| 1 | C37635331 Crystal_GND24 | Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | C2765186 USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | C157928 Conn_01x03 | JST_XH_S3B-XH-A_1x03_P2.50mm_Horizontal | J2 |
| 1 | C161870 Conn_01x03 | JST_XH_B3B-XH-AM_1x03_P2.50mm_Vertical | J3 |
| 1 | C161871 Conn_01x04 | JST_XH_B4B-XH-AM_1x04_P2.50mm_Vertical | J4 |
| 1 | CONN_01X15 Conn_01x15 | JST_XH_S15B-XH-A_1x15_P2.50mm_Horizontal | J5 |
| 1 | C127629 Antenna_Chip | L_1206_3216Metric | AE1 |
| 1 | C2988620 18650 | BatteryHolder_Keystone_1042_1x18650 | BT1 |
| 1 | C965860 LED_RED | LED_1.7x1.1mm | D1 |
| 1 | C965863 LED_GREEN | LED_1.7x1.1mm | D2 |
| 1 | C86065C86065 4.7nH | L_0402_1005Metric | L1 |
| 1 | C5832368 0.47uH | L_1008_2520Metric | L2 |
| 1 | C285052 0.5pF | C_0402_1005Metric | C1 |
Show 17 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C45359894 12pF | C_0402_1005Metric | C2, C3 |
| 1 | C41361068 0.8pF | C_0402_1005Metric | C4 |
| 5 | C6119799 100nF | C_0402_1005Metric | C5, C11, C12, C13, C18 |
| 1 | C77177 100pF | C_0402_1005Metric | C6 |
| 2 | C1592 1uF | C_0603_1608Metric | C7, C10 |
| 3 | C23733 4.7uF | C_0402_1005Metric | C8, C9, C14 |
| 2 | C6119842 10uF | C_0603_1608Metric | C15, C16 |
| 1 | C380323 22uF | C_0603_1608Metric | C17 |
| 2 | C26000 5.1k | R_0603_1608Metric | R1, R2 |
| 17 | C2907127 220R | R_0603_1608Metric | R3, R4, R5, R13, R14, R15, R16, R17 +9 |
| 1 | C25987 1.2k | R_0603_1608Metric | R6 |
| 1 | C5126239 511k | R_0402_1005Metric | R7 |
| 1 | C4147 91k | R_0402_1005Metric | R8 |
| 1 | C138014 2M | R_0402_1005Metric | R9 |
| 1 | C26083 1M | R_0402_1005Metric | R10 |
| 1 | C2907089 100R | R_0603_1608Metric | R11 |
| 1 | C22975 2k | R_0603_1608Metric | R12 |
Stair lights design files
The KiCad project lives in the ogruendel/stair-lights repository on GitHub; these links point at the commit this page was built from.
Stair lights: common questions
What microcontroller does the Stair lights use?
The Stair lights is built around the C190794, from the Nordic nRF family.
How big is the Stair lights PCB?
The Stair lights measures 61.5 × 100.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Stair lights?
76 components, from 37 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 Stair lights design files?
From the ogruendel/stair-lights repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Stair lights design in my own project?
The repository has no license, so all rights stay with ogruendel. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Stair lights 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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