MEMS (sensors)

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Resolved! LIS2DW12 shared SDI and CLK lines cause current leaks

Hello!We have developed two types of custom boards, with two different MCUs. On board number 1, each peripheral unit has its own SPI lines dedicated to it. On board number 2, the number of GPIOs has decreased, so we decided that the CLK and MOSI (SDI...

APipm.1 by Associate II
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How to completely power down the lsm9ds1?

I'm using the lsm9ds1 as part of a bought module - the arduino nano 33 ble - which can achieve very low power (micro amps) in a power down mode.However, If I initialize and read accel and gyro data from the IMU, afterwards I can't find a way to get b...

PRebo.1 by Associate II
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  • 2 replies
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How to completely power down the lsm9ds1?

I'm using the lsm9ds1 as part of a bought module - the arduino nano 33 ble - which can achieve very low power (micro amps) in a power down mode. However, If I initialize and read accel and gyro data from the IMU, afterwards I can't find a way to get ...

PRebo.1 by Associate II
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  • 0 replies
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H3LIS100DL sleep-to-wake - how to enable?

Greetings. I am familiar with the general sleep-to-wake functionality, I've used it successfully in the IIS2DH. However I am having issues with the H3LIS100DL. I believe I've enabled sleep-to-wake using control register 5, I've configured the interru...

cphelan by Associate II
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LIS2DH power consumption with 1 axis enabled?

We're evaluating the LIS2DH (and -DE) for a very low-power project, and every uA is precious. We only need readings from one axis, so I am curious as to whether disabling the other two axes would result in power savings. I've tried measuring it her...

eggs by Associate
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Spurious INT2 on LSM6DSMTR

Posted on January 17, 2018 at 02:13I believe I've configured my system (LSM6DSMTR connected to Nordic nRF52382 via I2C) to interrupt on INT2 when the FIFO threshold is reached.  What is happening, is that I get an interrupt when data first appears i...

LSM6DSL. Wake-Up Interrupt

Posted on January 18, 2018 at 09:07I have configured the Wake-Up interrupt (with highpass filter) as described in the application note: 1. Write 60h to CTRL1_XL // Turn on the accelerometer // ODR_XL = 416 Hz, FS_XL = 2 g2.Write 90h to TAP_CFG // En...

Resolved! LIS2DE12 Sleep-to-wake and Return-to-sleep feature

Posted on November 21, 2017 at 23:34I like to use the Sleep-to-wake and Return-to-sleep feature of the LIS2DE12. I am wondering what axis value is compared with the threshold value (ACT_THS). Can I select the axis? The http://www.st.com/content/ccc/...