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| author | bluesforte <harry3b9@gmail.com> | 2022-05-04 16:02:37 -0700 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2022-06-16 11:09:33 -0400 |
| commit | f55b9d3e5746b73d37f1f2de288aa06d9fe23138 (patch) | |
| tree | 4f4a2945127c61340195c80ccfce11694512e64a /docs | |
| parent | fc7838855f886383917076cee87b13938d8bbe40 (diff) | |
| download | kutter-f55b9d3e5746b73d37f1f2de288aa06d9fe23138.tar.gz kutter-f55b9d3e5746b73d37f1f2de288aa06d9fe23138.tar.xz kutter-f55b9d3e5746b73d37f1f2de288aa06d9fe23138.zip | |
mpu9250: Adding support for MPU-9250 (and MPU-6050) accelerometer
Add support for mpu9250 accelerometer over I2C bus.
Signed-off-by: Harry Beyel <harry3b9@gmail.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/Measuring_Resonances.md | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/docs/Measuring_Resonances.md b/docs/Measuring_Resonances.md index 655a6494..42bb9fb7 100644 --- a/docs/Measuring_Resonances.md +++ b/docs/Measuring_Resonances.md @@ -31,6 +31,17 @@ and **will not work**. The recommended connection scheme: | SDA | 19 | GPIO10 (SPI0_MOSI) | | SCL | 23 | GPIO11 (SPI0_SCLK) | +An alternative to the ADXL345 is the MPU-9250 (or MPU-6050). This accelerometer has been tested to work over I2C on the RPi at 400kbaud. +Recommended connection scheme for I2C: + +| MPU-9250 pin | RPi pin | RPi pin name | +|:--:|:--:|:--:| +| 3V3 (or VCC) | 01 | 3.3v DC power | +| GND | 09 | Ground | +| SDA | 03 | GPIO02 (SDA1) | +| SCL | 05 | GPIO03 (SCL1) | + + Fritzing wiring diagrams for some of the ADXL345 boards:  @@ -87,7 +98,7 @@ Afterwards, check and follow the instructions in the Make sure the Linux SPI driver is enabled by running `sudo raspi-config` and enabling SPI under the "Interfacing options" menu. -Add the following to the printer.cfg file: +For the ADXL345, add the following to the printer.cfg file: ``` [mcu rpi] serial: /tmp/klipper_host_mcu @@ -103,6 +114,21 @@ probe_points: It is advised to start with 1 probe point, in the middle of the print bed, slightly above it. +For the MPU-9250: +``` +[mcu rpi] +serial: /tmp/klipper_host_mcu + +[mpu9250] +i2c_mcu: rpi +i2c_bus: i2c.1 + +[resonance_tester] +accel_chip: mpu9250 +probe_points: + 100, 100, 20 # an example +``` + Restart Klipper via the `RESTART` command. ## Measuring the resonances |