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KevinOConnor
2025-05-04 00:06:21 +00:00
parent 9d64784cd9
commit 06b88075fb
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it/Measuring_Resonances.html
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@@ -838,11 +838,11 @@
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500" class="md-nav__link">
MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500
<a href="#mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500icm20948" class="md-nav__link">
MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500/ICM20948
</a>
<nav class="md-nav" aria-label="MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500">
<nav class="md-nav" aria-label="MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500/ICM20948">
<ul class="md-nav__list">
<li class="md-nav__item">
@@ -1595,8 +1595,8 @@
<li class="md-nav__item">
<a href="Load_Cell.md" class="md-nav__link">
None
<a href="Load_Cell.html" class="md-nav__link">
Load Cells
</a>
</li>
@@ -1721,11 +1721,11 @@
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500" class="md-nav__link">
MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500
<a href="#mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500icm20948" class="md-nav__link">
MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500/ICM20948
</a>
<nav class="md-nav" aria-label="MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500">
<nav class="md-nav" aria-label="MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500/ICM20948">
<ul class="md-nav__list">
<li class="md-nav__item">
@@ -1942,7 +1942,7 @@
<p>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 <a href="Resonance_Compensation.html">input shapers</a> to compensate for resonances. Note that using accelerometers requires some 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 <em>fast mode</em> in Klipper. The LIS2DW and LIS3DH can be connected to either SPI or I2C with the same considerations as above.</p>
<p>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.</p>
<p>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).</p>
<p>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.</p>
<p>For MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500/ICM20948s and LIS2DW/LIS3DH there are also a variety of board designs and clones with different I2C pull-up resistors which will need supplementing.</p>
<h2 id="mcus-with-klipper-i2c-fast-mode-support">MCUs with Klipper I2C <em>fast-mode</em> Support<a class="headerlink" href="#mcus-with-klipper-i2c-fast-mode-support" title="Permanent link">&para;</a></h2>
<table>
<thead>
@@ -2107,7 +2107,7 @@ GND+SCL
</code></pre></div>
<p>Note that unlike a cable shield, any GND(s) should be connected at both ends.</p>
<h4 id="mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500">MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500<a class="headerlink" href="#mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500" title="Permanent link">&para;</a></h4>
<h4 id="mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500icm20948">MPU-9250/MPU-9255/MPU-6515/MPU-6050/MPU-6500/ICM20948<a class="headerlink" href="#mpu-9250mpu-9255mpu-6515mpu-6050mpu-6500icm20948" title="Permanent link">&para;</a></h4>
<p>These accelerometers have been tested to work over I2C on the RPi, RP2040 (Pico) and AVR at 400kbit/s (<em>fast mode</em>). Some MPU accelerometer modules include pull-ups, but some are too large at 10K and must be changed or supplemented by smaller parallel resistors.</p>
<p>Schema di connessione consigliato per I2C su Raspberry Pi:</p>
<table>
@@ -2328,6 +2328,7 @@ probe_points:
100, 100, 20 # un esempio
</code></pre></div>
<p>If you are using the ICM20948, replace instances of "mpu9250" with "icm20948".</p>
<h4 id="configure-mpu-9520-compatibles-with-pico">Configure MPU-9520 Compatibles With Pico<a class="headerlink" href="#configure-mpu-9520-compatibles-with-pico" title="Permanent link">&para;</a></h4>
<p>Pico I2C is set to 400000 on default. Simply add the following to the printer.cfg:</p>
<div class="highlight"><pre><span></span><code>[mcu pico]
@@ -2346,6 +2347,7 @@ probe_points:
pins: pico:gpio23
</code></pre></div>
<p>If you are using the ICM20948, replace instances of "mpu9250" with "icm20948".</p>
<h4 id="configure-mpu-9520-compatibles-with-avr">Configure MPU-9520 Compatibles with AVR<a class="headerlink" href="#configure-mpu-9520-compatibles-with-avr" title="Permanent link">&para;</a></h4>
<p>AVR I2C will be set to 400000 by the mpu9250 option. Simply add the following to the printer.cfg:</p>
<div class="highlight"><pre><span></span><code>[mcu nano]
@@ -2360,6 +2362,7 @@ probe_points:
100, 100, 20 # an example
</code></pre></div>
<p>If you are using the ICM20948, replace instances of "mpu9250" with "icm20948".</p>
<p>Riavvia Klipper tramite il comando <code>RESTART</code>.</p>
<h2 id="misurare-le-risonanze">Misurare le risonanze<a class="headerlink" href="#misurare-le-risonanze" title="Permanent link">&para;</a></h2>
<h3 id="controllo-della-configurazione">Controllo della configurazione<a class="headerlink" href="#controllo-della-configurazione" title="Permanent link">&para;</a></h3>