MCU (STM32H723VET6)

stm32h723zg.pdf

Accelerometer #1 (H3LIS100DLTR)

DS_h3lis331dl.pdf

pPrice: 13.73

Stock: https://jlcpcb.com/partdetail/STMicroelectronics-H3LIS331DLTR/C2655074

Reason:

• the high-g channel
• ±100g shock survivability
• (Coarse) ~ 49 mg/LSB at ±100 g
• Programmable threshold + duration registers, high-pass filter, two INT pins, the same architecture as the LIS3DHTR.

Barometer (MS561101BA03-50)

https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=MS5611-01BA03&DocType=Data%20Sheet&DocLang=English&DocFormat=pdf&PartCntxt=MS561101BA03-50

Price: 6.68

Stock: https://jlcpcb.com/partdetail/TEConnectivity-MS561101BA0350/C15639

Reasons:

• Supply: 1.8–3.6 V; peak 1.4 mA during conversion, 0.02 µA standby
• Operating range: ~0.0099 to ~1.184 atm
• ADC: 24-bit ΔΣ
• Interface: I²C and SPI (up to 20 MHz)
• Absolute accuracy: ±0.00148 atm at 25 °C (±1.5 mbar); ±0.00049 atm with one-point autozero (±0.5 mbar)

IMU (ISM330DHCXTR**)**

ism330dhcx.pdf

Price: 6.63

Stock: https://jlcpcb.com/partdetail/STMicroelectronics-ISM330DHCXTR/C2655101

Reasoning:

• Gyroscope full-scale range: ±125/±250/±500/±1000/±2000/±4000 dps
• Accelerometer full-scale range: ±2/±4/±8/±16 g
• Accel sensitivity at ±2 g: 0.061 mg/LSB (this one appeared in the datasheet text — the self-test note)
• Max ODR: up to 6.66 kHz
• FIFO: 3 KB (up to 9 KB with compression)
• Interfaces: I²C / SPI / MIPI I3C + auxiliary SPI