2 layers81.2 × 81.2 mm
4 layers158.5 × 81.5 mm
Biro-1-rev-0
PROJECT-BIRO/Biro-11- Size
- 158.5 × 81.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 137
- Nets
- 126
- Pads
- 515
- Tracks, vias
- 406, 172
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Feb 2025
- Updated
- 15 Apr 2026
Overview
Biro-1-rev-0 is an open-source printed circuit board by PROJECT-BIRO, from the PROJECT-BIRO/Biro-1 repository on GitHub, published under the MIT licence. It is a 4-layer board of 158.5 × 81.5 mm with 137 parts on 126 nets, routed with 406 tracks and 172 vias.
It is built around the SN74LV1T34DBV, ESP32-S3-WROOM-1-N8 and APDS-9306-065, with the MT6701CT-STD, NAU7802SGI and TMC6300-LA-T among its other parts. Its parts include 38 resistors, 33 capacitors, 29 diodes, 10 switches and 9 ICs. It belongs with the ESP32 boards of this library.
Main components
10
SN74LV1T34DBV
SOT-23-5-40℃~+125℃ 1 1 1.6V~5.5V 10uA 5.5ns@5V,15pF 74LV 8mA 8mA Level shifting Push-pull Unidirectional SOT-23-5 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
APDS-9306-065
UDFN-6(2x2)-40℃~+85℃ 0.65mm 1.7V~3.6V 20bit 2mm 2mm I2C Light Intensity UDFN-6(2x2) Ambient Light Sensors ROHSBroadcom LimitedAmbient Light Sensors
MT6701CT-STD
SOP-8-40℃~+125℃ 0°~360° 1.75mm 10mA 3.3V~5V 3.9mm 5mm I2C、SSI Magnetic rotary position sensor No Programmable transmission、Zero position programming、Multi-axis magnetic field detection SOP-8 Position Sensors ROHSNOVOSENSEPosition Sensors
NAU7802SGI
SOP-16-40℃~+85℃ 2 2.1mA 2.7V~5.5V 24 4.9152MHz 80Hz Auto calibration、Built-in temperature sensor、Multiplexers、Power-on reset External External、Built-in I2C Sigma-Delta Support Yes SOP-16 Analog to Digital Converters (ADC) ROHSNuvoton TechAnalog To Digital Converters (ADC)
TMC6300-LA-T
QFN-20(3x3)-40℃~+125℃ 2A 2A 2V~11V 3 50nA Interleaved conduction protection Three Phase Yes QFN-20(3x3) Brushless DC (BLDC) Motor Driver ROHSTRINAMIC Motion Control GmbHBrushless DC (BLDC) Motor Driver
TPS62132RGT
VQFN-16-EP(3x3)-40℃~+85℃@(TA) 1 17uA 2.5MHz 3.3V 3A 3V~17V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Adjustable soft-start、Operating status indication、Output voltage tracking Step-down type Yes VQFN-16-EP(3x3) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
BQ24075RGT
QFN-16-EP(3x3)-40℃~+125℃ 1.5A 4.2V 4.35V~6.4V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching DiodesIN-PI55TATPRPGPB
SMD5050-4SMD5050-4 RGB LEDs(Built-in IC) ROHSInoluxUncategorised
README
README.mdBiro-1
A custom media controller for computers, allowing you to easily change volume, play/pause, skip/rewind, and launch favourite applications. Currently being developed!
Parts
137| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C4, C5, C6, C7, C8, C9, C10, C11, C12, C14, C17, C21, C22, C27, C33 |
| 14 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R16, R17, R19, R20, R21, R22, R23, R24, R25, R26, R27, R30, R31 |
| 10 | 100K | Resistor_SMD:R_0603_1608Metric | R8, R11, R12, R13, R14, R15, R34, R35, R36, R37 |
| 9 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | IN-PI55TATPRPGPB | LED_IN-PI55TAT_INL:LED_IN-PI55TAT_INL | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9 |
| 9 | Keyswitch | ScottoKeebs_MX:MX_PCB_1.00u | S1, S2, S3, S4, S5, S6, S7, S8, S9 |
| 8 | 4691 | LED_4691:LED_4691 | D10, D12, D13, D14, D15, D16, D17, D18 |
| 5 | ScrewHole | MountingHole:MountingHole_2.2mm_M2_ISO7380_Pad | H4, H5, H6, H7, H8 |
| 4 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C19, C28, C32 |
| 4 | 330 | Resistor_SMD:R_2512_6332Metric | R4, R5, R6, R7 |
| 4 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C23, C24, C29, C31 |
| 4 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4, J5, J6, J7 |
| 3 | 10nF | Capacitor_SMD:C_0603_1608Metric | C16, C18, C20 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C15 |
| 3 | MotorHole | Holes:MountingHole_M1.6 | H1, H2, H3 |
| 2 | 1.5K | Resistor_SMD:R_0603_1608Metric | R32, R33 |
| 2 | 22uF | Capacitor_SMD:C_0603_1608Metric | C25, C30 |
| 2 | 47 | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | 5.1K | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D19, D20 |
| 2 | SN74LV1T34DBV | Package_TO_SOT_SMD:SOT-23-5 | U2, U7 |
| 1 | 1.13K | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | 1.1K | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 2.2uH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 3.3nF | Capacitor_SMD:C_0603_1608Metric | C26 |
| 1 | 500 | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 50K | Resistor_SMD:R_0603_1608Metric | R38 |
| 1 | APDS-9306-065 | OptoDevice:Broadcom_DFN-6_2x2mm_P0.65mm | U3 |
| 1 | BQ24075RGT | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U8 |
| 1 | Conn_01x03 | Connector_Wire:SolderWire-2sqmm_1x03_P7.8mm_D2mm_OD3.9mm | J9 |
| 1 | Conn_01x08 | Connector_JST:JST_EH_B8B-EH-A_1x08_P2.50mm_Vertical | J2 |
| 1 | D_TVS | Diode_SMD:D_0603_1608Metric | D11 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U1 |
| 1 | I2C | 022232031:CONN_A-6373-03A_MOL | J1 |
| 1 | MT6701CT | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | NAU7802SGI | NAU7802SGI:SOI16_NAU7802SGI_NUV | U5 |
| 1 | S2B-PH-K-SLFSN | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J8 |
| 1 | SLW-1274547-4A-RA-D | SW_SLW-1274547-4A-RA-D:SW_SLW-1274547-4A-RA-D | S10 |
| 1 | TMC6300-LA-T | TMC6300:21-100586_K2033&plus_1C_ADI | U6 |
| 1 | TPS62132 | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.68x1.68mm_ThermalVias | U9 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J3 |
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Questions
How big is the Biro-1-rev-0 PCB?
It measures 158.5 × 81.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Biro-1-rev-0 use?
137 parts, built around the SN74LV1T34DBV, ESP32-S3-WROOM-1-N8, APDS-9306-065 and MT6701CT-STD. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Biro-1-rev-0 KiCad files?
From the PROJECT-BIRO/Biro-1 repository on GitHub, at the commit this page was made from: the board is board/rev-0/biro-1-rev-0.kicad_pcb and its schematic board/biro-battery-schematic/biro-0.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Biro-1-rev-0 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).