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| 9a504f | Peter van Dijk | 2026-02-25 20:36:11 | 1 | # Nebra Indoor Miner |
| 2 | ||||
| 3 | first generation, Pi3 CM based. |
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| 4 | 2 USB, 1 miniPCIe with exactly enough pins for SX1262. |
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| 5 | ||||
| 6 | [schematic](https://github.com/NebraLtd/nebra-lora-hardware/blob/master/Smart-Indoor-Mainboard-V1/HARDWARE/indoor-schematic.pdf) |
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| 7 | ||||
| 8 | ## working SPI pymc setup |
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| 10 | ```python |
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| 11 | "bus_id": 1, |
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| 12 | "cs_id": 0, |
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| 13 | "cs_pin": 24, |
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| 14 | "reset_pin": 38, |
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| 15 | "busy_pin": 32, |
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| 16 | "irq_pin": 33, |
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| 17 | "txen_pin": -1, |
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| 18 | "frequency": int(869.618 * 1000000), # EU: 869.525 MHz, |
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| 19 | "tx_power": 22, |
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| 20 | "spreading_factor": 8, |
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| 21 | "bandwidth": int(62.5 * 1000), |
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| 22 | "coding_rate": 8, |
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| 23 | "preamble_length": 17, |
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| 24 | "use_dio3_tcxo": True |
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| 25 | ``` |
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| 26 | ||||
| 27 | miniPCIe pins: |
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| 28 | ||||
| 3f90b8 | Peter van Dijk | 2026-02-25 22:57:33 | 29 | * SPI (MISO/MOSI/SCLK/CS in that order) on 47/49/45/51 |
| 9a504f | Peter van Dijk | 2026-02-25 20:36:11 | 30 | * RST on 22 |
| 31 | * BUSY on 31 |
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| 32 | * DIO1/IRQ on 33 |