BLEhound
BLEhound is an open source Nordic nRF PCB design by BLEhound: a 6-layer, 70 × 60 mm board with 157 components (50 distinct parts). It is built around the nRF54LM20A ch37, nRF54LM20A ch38, nRF54LM20A ch39, NRF21540-QDAA and more.
⚠️ This is an unfinished revision — routing is incomplete. Do not fabricate it. V2 is the fix for V1's pin-level defects; until it is finished, working three-board hardware means a reworked V1 (flying-wire fixes applied) — see ../v1/README.md. A plain V1 works for single-board sn
⚠️ This is an unfinished revision — routing is incomplete. Do not fabricate it. V2 is the fix for V1's pin-level defects; until it is finished, working three-board hardware means a reworked V1 (flying-wire fixes applied) — see ../v1/README.md. A plain V1 works for single-board sniffing only.
V2 folds V1's fixes directly onto the PCB, so no flying wires are needed. For SYNC and the straps the firmware pin targets are unchanged — V1 reaches them by flying wire, V2 by native routing. Concretely:
Built around
Parts list
157 components, 50 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | nRF54LM20A ch37 | nRF54LM20A{colon}nRF54LM20A_QFN52_6x6mm_P0.4mm_EP4.7x4.7mm | U1 |
| 1 | nRF54LM20A ch38 | nRF54LM20A{colon}nRF54LM20A_QFN52_6x6mm_P0.4mm_EP4.7x4.7mm | U2 |
| 1 | nRF54LM20A ch39 | nRF54LM20A{colon}nRF54LM20A_QFN52_6x6mm_P0.4mm_EP4.7x4.7mm | U3 |
| 3 | NRF21540-QDAA | nRF54LM20A{colon}nRF21540_QFN16_4x4mm_P0.65mm_EP2.65 | U4, U5, U6 |
| 1 | CH334F | ext{colon}QFN-24_L4.0-W4.0-P0.50-BL-EP2.8 | U7 |
| 1 | AP2112K-3.3 | ext{colon}SOT-25-5_L2.9-W1.6-P0.95-LS2.8-BL | U8 |
| 3 | 32MHZ | nRF54LM20A{colon}DK_Crystal_32MHz | Y1, Y2, Y3 |
| 6 | SMA_2081005-1 | nordic{colon}SMA_RA_TH_Taoglas | J1, J2, J4, J5, J7, J8 |
| 1 | SWD+ETM ch37 | Connector_PinHeader_2.54mm{colon}PinHeader_2x05_P2.54mm_Vertical | J3 |
| 1 | SWD+ETM ch38 | Connector_PinHeader_2.54mm{colon}PinHeader_2x05_P2.54mm_Vertical | J6 |
| 1 | SWD+ETM ch39 | Connector_PinHeader_2.54mm{colon}PinHeader_2x05_P2.54mm_Vertical | J9 |
| 1 | USB-C | ext{colon}USB-C_SMD-TYPE-C-31-M-12_1 | J10 |
| 3 | BOOT | Button_Switch_SMD{colon}SW_SPST_SKQG_WithoutStem | SW1, SW3, SW5 |
| 3 | RESET | Button_Switch_SMD{colon}SW_SPST_SKQG_WithoutStem | SW2, SW4, SW6 |
| 3 | GREEN | LED_SMD{colon}LED_0603_1608Metric | D1, D2, D3 |
| 1 | PWR | LED_SMD{colon}LED_0603_1608Metric | D4 |
| 1 | PRTR5V0U2F | nordic{colon}SON50P100X50-6N | D5 |
| 1 | SMAJ5.0A | Diode_SMD{colon}D_SMA | D6 |
| 2 | PESD5V0S1BA | Diode_SMD{colon}D_SOD-323 | D7, D8 |
| 3 | 120R | nRF54LM20A{colon}DK_L_0201_0603Metric | FB1, FB3, FB5 |
Show 30 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 15NH 15nH | nRF54LM20A{colon}DK_L_0201_0603Metric | FB2, FB4, FB6 |
| 1 | 120R/3A | nordic{colon}INDC1608X06L | FB7 |
| 3 | 3.6NH 3.6nH | nRF54LM20A{colon}DK_L_0201_0603Metric | L1, L10, L19 |
| 3 | 4.7NH 4.7nH | nRF54LM20A{colon}DK_L_0201_0603Metric | L2, L11, L20 |
| 3 | 3.3NH 3.3nH | nRF54LM20A{colon}DK_L_0201_0603Metric | L3, L12, L21 |
| 6 | 1.9NH 1.9nH | nRF54LM20A{colon}DK_L_0201_0603Metric | L4, L6, L13, L15, L22, L24 |
| 6 | 3.0NH 3.0nH | nRF54LM20A{colon}DK_L_0201_0603Metric | L5, L7, L14, L16, L23, L25 |
| 3 | 4.7UH 4.7uH | nRF54LM20A{colon}DK_L_0603_1608Metric | L8, L17, L26 |
| 3 | 1.0NH 1.0nH | nRF54LM20A{colon}DK_L_0201_0603Metric | L9, L18, L27 |
| 1 | DLM0NSM900HY2D | nordic{colon}CMC0806X05N | L28 |
| 3 | 1.2PF 1.2pF | nRF54LM20A{colon}DK_C_0201_0603Metric | C1, C21, C41 |
| 3 | 1.5PF 1.5pF | nRF54LM20A{colon}DK_C_0201_0603Metric | C2, C22, C42 |
| 3 | 0.3PF 0.3pF | nRF54LM20A{colon}DK_C_0201_0603Metric | C3, C23, C43 |
| 12 | 1.0PF 1.0pF | nRF54LM20A{colon}DK_C_0201_0603Metric | C4, C8, C10, C13, C24, C28, C30, C33 +4 |
| 3 | 100NF 100nF | nRF54LM20A{colon}DK_C_0201_0603Metric | C5, C25, C45 |
| 3 | 10UF 10uF | nRF54LM20A{colon}DK_C_0402_1005Metric | C6, C26, C46 |
| 6 | 2.0PF 2.0pF | nRF54LM20A{colon}DK_C_0201_0603Metric | C7, C9, C27, C29, C47, C49 |
| 3 | 4.7UF 4.7uF | nRF54LM20A{colon}DK_C_0201_0603Metric | C11, C31, C51 |
| 9 | 2.2UF 2.2uF | nRF54LM20A{colon}DK_C_0201_0603Metric | C12, C14, C15, C32, C34, C35, C52, C54 +1 |
| 9 | — | Capacitor_SMD{colon}C_0402_1005Metric | C16, C17, C18, C36, C37, C38, C56, C57 +1 |
| 4 | 10UF 10uF | Capacitor_SMD{colon}C_0603_1608Metric | C19, C39, C59, C63 |
| 3 | 4.7UF 4.7uF | Capacitor_SMD{colon}C_0603_1608Metric | C20, C40, C60 |
| 1 | 1UF 1uF | Capacitor_SMD{colon}C_0402_1005Metric | C61 |
| 2 | 1UF 1uF | Capacitor_SMD{colon}C_0603_1608Metric | C62, C64 |
| 1 | 100NF 100nF | Capacitor_SMD{colon}C_0402_1005Metric | C65 |
| 3 | 33K 33k | nRF54LM20A{colon}DK_R_0201_0603Metric | R1, R6, R11 |
| 4 | 1k | Resistor_SMD{colon}R_0402_1005Metric | R2, R7, R12, R18 |
| 12 | — | Resistor_SMD{colon}R_0402_1005Metric | R3, R4, R5, R8, R9, R10, R13, R14 +4 |
| 2 | 5.1K 5.1k | Resistor_SMD{colon}R_0402_1005Metric | R16, R17 |
| 1 | 4.7K 4.7k | Resistor_SMD{colon}R_0402_1005Metric | R19 |
solosky
ebastler
Gt5588