Nrf52840-x3
About the Nrf52840-x3 PCB
Nrf52840-x3 is an open source PCB design by ugokutennp, published on GitHub under the MIT license. It is a 2-layer board measuring 79.9 × 28.4 mm, with 19 components from 14 distinct parts.
Other key parts include the SL2.1S and MS88SF2. By type, the board carries 4 ICs, 4 capacitors, 4 resistors, 3 connectors, 1 crystal and 1 fuse.
From the project
3 connection DIY watchman dongle
BOM can be viewed here.Other data are below.
The hex file in the Bootloader file is a build of AdafruitnRF52Bootloader. Using J-Link to write the bootloader via SWD, the uf2 firmware created with Watchman-uf2 can be written via USB.
Main components on the Nrf52840-x3
Nrf52840-x3 bill of materials (BOM)
19 components, 14 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SL2.1S | SSOP-16_sl2.1s | U1 |
| 3 | MS88SF2 | XCVR_MS88SF2 | U2, U3, U4 |
| 1 | X322512MSB4SI | Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | TYPE-C-31-M-12 | HRO_TYPE-C-31-M-12 | J1 |
| 1 | U-A-24DD-W-16 | USB_A_U-A-24DD-W-16 | J2 |
| 1 | C_0603_1608Metric | C_0603_1608Metric | p0.24 |
| 1 | MF-NSMF050-2 | Fuse_1206_3216Metric | F1 |
| 1 | SKRKAEE020 | SW_Push_SPST_NO_Alps_SKRK | SW1 |
| 1 | 19-217/BHC-ZL1M2RY/3T | LED_0603_1608Metric | D1 |
| 3 | 10U 10u | C_0603_1608Metric | C1, C3, C4 |
| 1 | 100ｎ | C_0603_1608Metric | C2 |
| 2 | 5K1 5k1 | R_0603_1608Metric | R1, R2 |
| 1 | 470 | R_0603_1608Metric | R4 |
| 1 | 10K 10k | R_0603_1608Metric | R5 |
Nrf52840-x3 design files
The KiCad project lives in the ugokutennp/nrf52840-x3 repository on GitHub; these links point at the commit this page was built from.
Nrf52840-x3: common questions
How big is the Nrf52840-x3 PCB?
The Nrf52840-x3 measures 79.9 × 28.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Nrf52840-x3?
19 components, from 14 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 Nrf52840-x3 design files?
From the ugokutennp/nrf52840-x3 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 Nrf52840-x3 design in my own project?
Yes, under the terms of its MIT license, which ugokutennp chose for the repository.