
Stm32-portable data logger
copperheadhq/copperhead-stm32-data-logger
Portable STM32L433 data logger, 50 × 70 mm, four layers, microSD, USB-C LiPo charging. Designed with copperhead. Never built: do not order expecting it to work.
SensirionExtended
-40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Factory calibration、Chemical gas resistance、Built-in heater I2C ±0.2℃ ±1.8%RH DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHS
The SHT40-AD1F-R2 is an uncategorised made by Sensirion in a DFN-4(1.5x1.5) package with 4 pins. -40℃~+125℃ 0%RH~100%RH 1.08V~3.6V 16bit 400nA Factory calibration、Chemical gas resistance、Built-in heater I2C ±0.2℃ ±1.8%RH DFN-4(1.5x1.5) Temperature and Humidity Sensor ROHS.
PCBKit's library has its KiCad symbol (Sensor_Humidity:SHT4x, from KiCad's library) and its footprint (Sensor_Humidity:Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad, from KiCad's library), ready for a KiCad board. 2,388 are in stock at JLCPCB (part C7461846). 7 open-source boards in 7 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | SDA | Input/output |
| 2 | SCL | Input |
| 3 | VDD | Power in |
| 4 | VSS | Power in |

copperheadhq/copperhead-stm32-data-logger
Portable STM32L433 data logger, 50 × 70 mm, four layers, microSD, USB-C LiPo charging. Designed with copperhead. Never built: do not order expecting it to work.

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vbartusevicius/weather-station
Open-source rooftop weather and air-quality station with no moving parts (Ø 96 × 235 mm, UV-stabilised ASA): ultrasonic wind, acoustic rain and hail, UV / sunlight / night-sky brightness, temperature, humidity…
Yes. The symbol is Sensor_Humidity:SHT4x and the footprint Sensor_Humidity:Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad, both drawn on this page. PCBKit places them on a board for you when you design with it.
DFN-4(1.5x1.5), with 4 pins. Its footprint is drawn on this page.
Sensirion publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C7461846, with 2,388 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the SHT40-AD1B-R3 by Sensirion, the SHT45-AD1F-R2 by Sensirion, the SHT40-CD1B-R3 by Sensirion and the SHT41-AD1F-R2 by Sensirion. Check their datasheets: a part that fits the footprint may still differ in its ratings.
7 boards in 7 repositories on GitHub; the most starred are listed on this page, with their KiCad files.