Bwlr1c
About the Bwlr1c PCB
Bwlr1c is an open source PCB design by teapotlaboratories, published on GitHub under the MIT license. It is a 2-layer board measuring 38.6 × 85.3 mm, with 35 components from 18 distinct parts.
Other key parts include the BME680 and RAK3172. By type, the board carries 16 capacitors, 5 resistors, 3 battery holders, 2 ICs, 2 connectors and 2 jumpers.
It belongs with the rf & radio, sensors and iot & wireless designs in this gallery.
From the project
Teapotlabs BWLR1C: Wireless Environmental Sensor over LoRa with On-Board Antenna
Teapotlabs BWLR1C is a wireless LoRa environmental sensor capable of sensing temperature, humidity, air pressure and air quality using the on-board BME680. This device is an updated to Teapotlabs BWLR1B, by using the an on-board antenna. By using an STM32WLE MCU, the device is capable of multi-year operation before changing the batteries
Teapotlabs BWLR1C is part of Teapot open-hardware project.
Main components on the Bwlr1c
Bwlr1c bill of materials (BOM)
35 components, 18 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BME680 | BME680-PSON80P300X300X100-8N | U1 |
| 1 | RAK3172 | RAK3172 | U2 |
| 1 | AO3407 | SOT-23 | Q1 |
| 1 | Program | PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | Debug | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 2 | CR2450 | BatteryHolder_Keystone_3008_1x2450 | BT1, BT3 |
| 1 | 2x AA | BatteryHolder_Keystone_2462_2xAA | BT2 |
| 1 | ANT-915-USP410 | XDCR_ANT-915-USP410 | E1 |
| 1 | USER0 | SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm_NumberLabels | JP1 |
| 1 | USER1 | SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm_NumberLabels | JP2 |
| 1 | RESET | SW_SPST_Omron_B3FS-100xP | SW3 |
| 1 | BOOT | SW_SPST_Omron_B3FS-100xP | SW4 |
| 1 | ? H | L_0603_1608Metric | L1 |
| 10 | 330uF | CP_EIA-3528-15_AVX-H_Pad1.50x2.35mm_HandSolder | C1, C2, C4, C6, C7, C8, C9, C10 +2 |
| 4 | 100nF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C5, C11, C12 |
| 2 | ? F | C_0603_1608Metric | C15, C16 |
| 4 | 10K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3, R6, R7 |
| 1 | 1K | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5 |
Bwlr1c design files
The KiCad project lives in the teapotlaboratories/bwlr1c repository on GitHub; these links point at the commit this page was built from.
Bwlr1c: common questions
How big is the Bwlr1c PCB?
The Bwlr1c measures 38.6 × 85.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Bwlr1c?
35 components, from 18 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 Bwlr1c design files?
From the teapotlaboratories/bwlr1c 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 Bwlr1c design in my own project?
Yes, under the terms of its MIT license, which teapotlaboratories chose for the repository.
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