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| author | Wulfsta <wulfstawulfsta@gmail.com> | 2024-11-20 00:48:59 -0500 |
|---|---|---|
| committer | KevinOConnor <kevin@koconnor.net> | 2024-11-27 18:32:09 -0500 |
| commit | 42d8b9b8475c51caffeff3176e7c6ebd7c3f31e0 (patch) | |
| tree | 8193a30ec9d112461aa1ab711cba219902174c45 /docs | |
| parent | 2cfef4d94d7240aaa13b9a6e33237f53efd88374 (diff) | |
| download | kutter-42d8b9b8475c51caffeff3176e7c6ebd7c3f31e0.tar.gz kutter-42d8b9b8475c51caffeff3176e7c6ebd7c3f31e0.tar.xz kutter-42d8b9b8475c51caffeff3176e7c6ebd7c3f31e0.zip | |
docs: Update Measuring Resonances document with LIS2DW/LIS3DH information
Signed-off-by: Luke Vuksta <wulfstawulfsta@gmail.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/Measuring_Resonances.md | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/docs/Measuring_Resonances.md b/docs/Measuring_Resonances.md index 81c2eb96..6c58409b 100644 --- a/docs/Measuring_Resonances.md +++ b/docs/Measuring_Resonances.md @@ -1,24 +1,26 @@ # Measuring Resonances -Klipper has built-in support for the ADXL345, MPU-9250 and LIS2DW compatible +Klipper has built-in support for the ADXL345, MPU-9250, LIS2DW and LIS3DH compatible accelerometers which can be used to measure resonance frequencies of the printer for different axes, and auto-tune [input shapers](Resonance_Compensation.md) to compensate for resonances. Note that using accelerometers requires some -soldering and crimping. The ADXL345/LIS2DW can be connected to the SPI interface +soldering and crimping. The ADXL345 can be connected to the SPI interface of a Raspberry Pi or MCU board (it needs to be reasonably fast). The MPU family can be connected to the I2C interface of a Raspberry Pi directly, or to an I2C -interface of an MCU board that supports 400kbit/s *fast mode* in Klipper. +interface of an MCU board that supports 400kbit/s *fast mode* in Klipper. The +LIS2DW and LIS3DH can be connected to either SPI or I2C with the same considerations +as above. When sourcing accelerometers, be aware that there are a variety of different PCB board designs and different clones of them. If it is going to be connected to a 5V printer MCU ensure it has a voltage regulator and level shifters. -For ADXL345s/LIS2DWs, make sure that the board supports SPI mode (a small number of +For ADXL345s, make sure that the board supports SPI mode (a small number of boards appear to be hard-configured for I2C by pulling SDO to GND). -For MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500s there are also a variety of -board designs and clones with different I2C pull-up resistors which will need -supplementing. +For MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500s and LIS2DW/LIS3DH there are also +a variety of board designs and clones with different I2C pull-up resistors which +will need supplementing. ## MCUs with Klipper I2C *fast-mode* Support @@ -27,6 +29,7 @@ supplementing. | Raspberry Pi | 3B+, Pico | 3A, 3A+, 3B, 4 | | AVR ATmega | ATmega328p | ATmega32u4, ATmega128, ATmega168, ATmega328, ATmega644p, ATmega1280, ATmega1284, ATmega2560 | | AVR AT90 | - | AT90usb646, AT90usb1286 | +| SAMD | SAMC21G18 | SAMC21G18, SAMD21G18, SAMD21E18, SAMD21J18, SAMD21E15, SAMD51G19, SAMD51J19, SAMD51N19, SAMD51P20, SAME51J19, SAME51N19, SAME54P20 | ## Installation instructions @@ -313,7 +316,7 @@ you'll also want to modify your `printer.cfg` file to include this: Restart Klipper via the `RESTART` command. -#### Configure LIS2DW series +#### Configure LIS2DW series over SPI ``` [mcu lis] |