4 layers100 × 100 mm
Data logger
Conor-Dunlop/FYP_datalogger
render of the datalogger with power board (yes i know it need routed)
176 parts
2 layers40 × 38.5 mm
Ttgo sensor board
expoman/envBoard- Size
- 40 × 38.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 59
- Nets
- 39
- Pads
- 176
- Tracks, vias
- 380, 65
- Pours
- 19
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 Jun 2023
- Updated
- 7 Aug 2024
Overview
Ttgo sensor board is an open-source printed circuit board by expoman, from the expoman/envBoard repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 40 × 38.5 mm with 59 parts on 39 nets, routed with 380 tracks and 65 vias.
It is built around the BME680, VEML7700-TT and LSM6DS3, with the TCA9800DGK among its other parts. Its parts include 16 capacitors, 10 resistors, 7 connectors, 5 ICs and 4 diodes. It belongs with the sensors and measurement boards of this library.
Main components
4
BME680
LGA-8-40℃~+85℃ 0.12hpa 0.6hpa 1.3pa/K 1.71V~3.6V 150nA 30Kpa~1.1bar I2C、SPI Temperature Sensor LGA-8 Pressure Sensors ROHSBosch SensortecPressure Sensors
VEML7700-TT
SMD-4P-25℃~+85℃ 120klx 16bit 2.35mm 2.5V~3.6V 3mm 6.8mm I2C Light Intensity Low power/sleep mode、Spectral correction/filtering、High dynamic range measurement、Adjustable gain control、Interrupt/event trigger、Built-in temperature compensation SMD-4P Ambient Light Sensors ROHSVishay IntertechnologyAmbient Light Sensors
LSM6DS3
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 8KB Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
TCA9800DGK
VSSOP-8-0.65mm-40℃~+125℃ 1 1.65V~3.6V 2 800mV~3.6V Auto Direction Detection、Power-Off Protection Bidirectional VSSOP-8-0.65mm Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
Parts
59| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C5, C9, C10, C11, C16 |
| 7 | 1uF | Capacitor_SMD:C_0805_2012Metric | C4, C6, C7, C8, C13, C14, C15 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R4, R5, R6 |
| 3 | Conn_01x04_Female | Connector_JST:JST_PH_S4B-PH-SM4-TB_1x04-1MP_P2.00mm_Horizontal | J5, J6, J7 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 2 | 82 | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | Conn_01x03_Female | Connector_JST:JST_PH_S3B-PH-SM4-TB_1x03-1MP_P2.00mm_Horizontal | J3, J4 |
| 2 | Conn_01x13_Female | Connector_PinSocket_2.54mm:PinSocket_1x13_P2.54mm_Vertical | J1, J2 |
| 2 | Q_NMOS_GSD | Package_TO_SOT_SMD:SOT-323_SC-70 | Q1, Q2 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2 |
| 1 | 10uF | Capacitor_SMD:CP_Elec_5x5.3 | C12 |
| 1 | 120 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 1W_0 | TestPoint:TestPoint_Pad_D1.0mm | TP10 |
| 1 | 1W_1 | TestPoint:TestPoint_Pad_D1.0mm | TP11 |
| 1 | 300 | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | BME680 | Package_LGA:Bosch_LGA-8_3x3mm_P0.8mm_ClockwisePinNumbering | U1 |
| 1 | INT1 | TestPoint:TestPoint_Pad_D1.0mm | TP12 |
| 1 | INT2 | TestPoint:TestPoint_Pad_D1.0mm | TP13 |
| 1 | LSM6DS3 | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U4 |
| 1 | SCL1V8 | TestPoint:TestPoint_Pad_D1.0mm | TP8 |
| 1 | SCL3V3 | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | SDA1V8 | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | SDA3V3 | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
| 1 | TCA9800 | Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm | U2 |
| 1 | TLV70218_SOT23-5 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | U0 | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | U1 | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | USER0 | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | USER1 | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | VCC18 | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | VCC33 | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | VCC33_Green | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | VCC5 | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | VCC5_Green | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | VEML7700 | own_footprints:VEML7700_top_view | U5 |
Questions
How big is the Ttgo sensor board PCB?
It measures 40 × 38.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ttgo sensor board use?
59 parts, built around the BME680, VEML7700-TT, LSM6DS3 and TCA9800DGK. 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 Ttgo sensor board KiCad files?
From the expoman/envBoard repository on GitHub, at the commit this page was made from: the board is pcb/ttgo_sensor_board.kicad_pcb and its schematic pcb/ttgo_sensor_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ttgo sensor board design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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