# puck_v0_nrf52xx&esp32xx compatible ## Description Seeed Studio XIAO nRF52840 Integration Project ## Project Details - **Owner:** beckybutton - **Created:** 11/8/2025 - **Last Updated:** 11/11/2025 - **Visibility:** Public - **Switch Behavior Verified:** SW1 common → Net 12; throws → 3V3, 5V | SW2 common → Net 36; throws → 3V3, 5V | SW3 common → Net 14; throws → 3V3, 5V | SW4 common → Net 11; throws → 3V3, 5V - **Unmatched Pins:** NFC 1, NFC 2, CLK, DIO, RST - **Remaining Unconnected Nets:** Net 28, Net 33, Net 22, Net 8, Net 30, Net 20, Net 7, Net 29, Net 32, Net 31 - **System Architecture:** graph TD U1"""U1: nRF52840 Module""" U1 -- D0 --> D0 U1 -- D1 --> D1 U1 -- D2 --> D2 U1 -- D3 --> D3 U1 -- D4 --> D4 U1 -- D5 --> D5 U1 -- D6 --> D6 U1 -- D7 --> D7 U1 -- D8 --> D8 U1 -- D9 --> D9 U1 -- D10 --> D10 U1 -- "3V3" --> "3V3" U1 -- "5V" --> "5V" U1 -- GND --> GND U1 -- "BAT+" --> "BAT+" U1 -- "BAT-" --> "BAT-" - **Switch Connectivity Confirmed:** Yes - **Copies:** 2 ## Key Components ### AUDIO OUT — [Z-21105110021001](https://www.flux.ai/lcsc/z-21105110021001~sjqi.md) - Product Info Url: https://lcsc.com/product-detail/Others_2-54-G-FRegular-5pin_C188243.html - Part Type: Pin Headers - Package or Case Code: HDR-TH_5P-P2.54-V_Z-211-0511-0021-001 - Manufacturer Name: Nextron(正凌) - Datasheet URL: https://lcsc.com/product-detail/Others_2-54-G-FRegular-5pin_C188243.html - LCSC Part Number: C188243 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: Z-21105110021001 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### BAT — [JST B2B PH K 01x02 Connector](https://www.flux.ai/jharwinbarrozo/jst-b2b-ph-k-01x02-connector~zu5.md) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Manufacturer Name: JST Sales America - Part Type: Connector **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### IN1 — [B4B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/b4b-ph-k-slfsn~64f.md) - Part Type: Connector - Manufacturer Name: JST Sales America Inc. - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Part Number: B4B-PH-K-S(LF)(SN) - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### IN1 — [Connector 01x04 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - PIN_1 [pin 1] - PIN_2 [pin 2] - PIN_3 [pin 3] - PIN_4 [pin 4] ### IN2 — [Connector 01x04 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - PIN_1 [pin 1] - PIN_2 [pin 2] - PIN_3 [pin 3] - PIN_4 [pin 4] ### IN2 — [B4B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/b4b-ph-k-slfsn~64f.md) - Manufacturer Name: JST Sales America Inc. - Part Type: Connector - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: B4B-PH-K-S(LF)(SN) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J1 — [Pin Header 01x02 2.54mm Vertical](https://www.flux.ai/jharwinbarrozo/generic-pin-header-01x02-2p54mm-vertical~4uy.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### OUT1 — [B4B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/b4b-ph-k-slfsn~64f.md) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Name: JST Sales America Inc. - Part Type: Connector - Manufacturer Part Number: B4B-PH-K-S(LF)(SN) - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### OUT1 — [Connector 01x04 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - PIN_1 [pin 1] - PIN_2 [pin 2] - PIN_3 [pin 3] - PIN_4 [pin 4] ### OUT1 — [JS102011JCQN](https://www.flux.ai/adrian95/js102011jcqn~oia.md) - Manufacturer Part Number: JS102011JCQN - Datasheet URL: https://www.ckswitches.com/media/1422/js.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Switch - Manufacturer Name: C&K **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### OUT2 — [JS102011JCQN](https://www.flux.ai/adrian95/js102011jcqn~oia.md) - Datasheet URL: https://www.ckswitches.com/media/1422/js.pdf - Manufacturer Part Number: JS102011JCQN - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Switch - Manufacturer Name: C&K **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### OUT2 — [B4B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/b4b-ph-k-slfsn~64f.md) - Manufacturer Part Number: B4B-PH-K-S(LF)(SN) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Manufacturer Name: JST Sales America Inc. **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### OUT2 — [Connector 01x04 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - PIN_1 [pin 1] - PIN_2 [pin 2] - PIN_3 [pin 3] - PIN_4 [pin 4] ### U1 — [Seeed Studio XIAO nRF52840](https://www.flux.ai/seeedstudio/seeed-studio-xiao-nrf52840~fc.md) - Part Type: Microcontroller - Role: Microcontroller - Purchase Url: https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html - Datasheet URL: https://files.seeedstudio.com/wiki/XIAO-BLE/nRF52840_PS_v1.5.pdf - Manufacturer Part Number: 102010448 - Manufacturer Name: Seeed Studio - Role Details: Main MCU **Pins:** - 3V3 [pin 12] - 5V [pin 14] - BAT- [pin 16] - BAT+ [pin 15] - CLK [pin 20] - D10_MOSI_P1.15 [pin 11] - D7_RX_P1.12 [pin 8] - D8_SCK_P1.13 [pin 9] - D9_MISO_P1.14 [pin 10] - DIO [pin 19] - GND [pin 13] - GND [pin 22] - NFC 1 [pin 18] - NFC 2 [pin 17] - P0.02_A0_D0 [pin 1] - P0.03_A1_D1 [pin 2] - P0.04_SDA_A4_D4 [pin 5] - P0.05_SCL_A5_D5 [pin 6] - P0.28_A2_D2 [pin 3] - P0.29_A3_D3 [pin 4] - P1.11_TX_D6 [pin 7] - RST [pin 21] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/beckybutton/puckv0nrf52xxandesp32xx-compatible~0r](https://www.flux.ai/beckybutton/puckv0nrf52xxandesp32xx-compatible~0r).* --- *Generated from [https://www.flux.ai/beckybutton/puckv0nrf52xxandesp32xx-compatible~0r](https://www.flux.ai/beckybutton/puckv0nrf52xxandesp32xx-compatible~0r)*