MaxLell/HALCO2A CO2 Sensor that looks like HAL9000
Co2 Sensor is an open-source printed circuit board by MaxLell, from the MaxLell/HALCO2 repository on GitHub, published under the MIT licence. It is a 2-layer board of 34 × 57.2 mm with 47 parts on 47 nets, routed with 385 tracks and 124 vias.
It is built around the STM32G031J6M6, LDK120M33R and DAN235FMT106. Its parts include 13 capacitors, 10 resistors, 8 connectors, 4 ICs and 3 diodes. It belongs with the sensors and measurement boards and the STM32 boards of this library.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 5k1 | Resistor_SMD:R_0805_2012Metric | R1, R3, R4, R5, R6, R9, R10 |
| 5 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C4, C8, C11, C13 |
| 5 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3, J4, J5, J6, J8 |
| 4 | 1u | Capacitor_SMD:C_0805_2012Metric | C3, C6, C10, C12 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric | C2, C7, C9 |
| 2 | Q_NMOS_GSD | Package_TO_SOT_SMD:TSOT-23 | Q1, Q2 |
| 1 | 270R | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 330u | Custom_Parts:Cap_Elko_330u_6V3 | C5 |
| 1 | 4u7 | Custom_Parts:SRP2010DPA-4R7M | L1 |
| 1 | 5R6 | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 6R8 | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | Conn_01x10 | Connector:Tag-Connect_TC2050-IDC-NL_2x05_P1.27mm_Vertical | J2 |
| 1 | Conn_01x10_Male | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J1 |
| 1 | DAN235FMT106 | Package_TO_SOT_SMD:SOT-323_SC-70 | D2 |
| 1 | LDK120M33R | Package_TO_SOT_SMD:TSOT-23-5 | IC3 |
| 1 | LED | Custom_Parts:Cree_SMD2 | D3 |
| 1 | PAM2804 | Package_TO_SOT_SMD:TSOT25 | IC2 |
| 1 | SCD4X | Sensor:SCD4X | IC4 |
| 1 | STM32G031J6 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | IC1 |
| 1 | ~ | Resistor_SMD:R_0603_1608Metric | D1 |
| 1 | ~ | Connector_USB:USB_C_Receptacle_JAE_DX07S024WJ3R400 | J7 |
The 41 most common of 47 parts.
It measures 34 × 57.2 mm and has 2 copper layers, 1.6 mm thick.
47 parts, built around the STM32G031J6M6, LDK120M33R and DAN235FMT106. 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.
From the MaxLell/HALCO2 repository on GitHub, at the commit this page was made from: the board is Hardware/PCBA/Co2_Sensor/Co2_Sensor.kicad_pcb and its schematic Hardware/PCBA/Co2_Sensor/CO2Sensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
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).
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