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Initial release: ESP32-C3 CO2 & environment sensor board

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KiCad 10 design (schematic, 2-layer layout, custom symbols and footprints),
fabrication data for PCBWay (Gerber X2, Excellon, job file), BOM, generated
documentation (schematic PDF, layer plots, 3D render) and firmware notes.
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Hannes committed 2026-10-19 22:11:12 +02:00
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bom/esp-sensair-bom.csv
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Reference,Qty,Part,Manufacturer,Package,Value,Function
U1,1,ESP32-C3 Wi-Fi/BLE module,Espressif,custom ESP32-C3 (16 THT pads),,MCU with onboard 3.3 V regulator
U2,1,S8 NDIR CO2 sensor,Sensirion,custom Sensair S8 (9 THT pads),,CO2 measurement (UART, 5 V heater)
U3,1,BME280,TDK InvenSense,custom BME280 plug-in (6 THT pads),,Temperature / humidity / pressure (I2C)
SW1,1,Tactile push button 6 mm,generic,Button_Switch_THT:SW_PUSH_6mm,,S8 calibration trigger
R1,1,Resistor 1 kOhm 0.25 W,generic,Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal,1k,Button debounce
C1,1,Ceramic capacitor 100 nF,generic,Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P5.00mm,100n,Button debounce / decoupling
1 Reference,Qty,Part,Manufacturer,Package,Value,Function
2 U1,1,ESP32-C3 Wi-Fi/BLE module,Espressif,custom ESP32-C3 (16 THT pads),,MCU with onboard 3.3 V regulator
3 U2,1,S8 NDIR CO2 sensor,Sensirion,custom Sensair S8 (9 THT pads),,CO2 measurement (UART, 5 V heater)
4 U3,1,BME280,TDK InvenSense,custom BME280 plug-in (6 THT pads),,Temperature / humidity / pressure (I2C)
5 SW1,1,Tactile push button 6 mm,generic,Button_Switch_THT:SW_PUSH_6mm,,S8 calibration trigger
6 R1,1,Resistor 1 kOhm 0.25 W,generic,Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal,1k,Button debounce
7 C1,1,Ceramic capacitor 100 nF,generic,Capacitor_THT:C_Disc_D10.5mm_W5.0mm_P5.00mm,100n,Button debounce / decoupling