Updates

content/drone-stuff/ardupilot-setup-checklist.md

@@ -60,7 +60,8 @@ The values in this section are specific to the Omnibus F4, but the settings aren
 
 
 - [ ] Connect GPS to UART 6 (SERIAL4). You don't need to do anything else for GPS, it should work out of the box.
-- [ ] Change the FC's orientation with `AHRS_ORIENTATION`.
+- [ ] Change the FC's orientation with `AHRS_ORIENTATION` and monitor the artificial horizon to see if it moves correctly.
+- [ ] Calibrate the accelerometer. "Forward" here needs to be the forward direction of the plane, not the arrow on the FC.
 - [ ] Connect Fport to a UART. I chose UART 3 (SERIAL2). If you want to use UART 1, you should set the RC input jumper to PPM on the F4 to disconnect the SBUS inverter from the pin.
 - [ ] To get Fport working with UART 3, you need to set `BRD_ALT_CONFIG=1`, to get UART 3 to act like a UART instead of I2C on the Omnibus F4.
 - [ ] Set the following for Fport on UART 3:
@@ -256,6 +257,6 @@ _(Many thanks to Michel Pastor for his help with everything in this note.)_
 * * *
 
 <p style="font-size:80%; font-style: italic">
-Last updated on May 15, 2021. For any questions/feedback,
+Last updated on May 16, 2021. For any questions/feedback,
 email me at <a href="mailto:hi@stavros.io">hi@stavros.io</a>.
 </p>