SDK-dat/arduino-dat/arduino-boards-dat/arduino-boards-dat.md
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@@ -23,6 +23,27 @@ https://arduino.esp8266.com/stable/package_esp8266com_index.json
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- [[usbasp-dat]] - [[avr-dat]] - [[avr-sdk-dat]]
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+## arduino nano BLE 33
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+
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+- arduino nano BLE 33 - nrf52840 + 9-axis IMU == LSM9DS1 9 Axis, Gyrometer, Accelerometer and Magnetometer - [[sensor-motion-dat]] - [[ 9-axis-IMU-dat]]
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+- SCH - https://content.arduino.cc/assets/NANO33BLE_V4.0_sch.pdf
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+- app - [[head-track-dat]]
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+
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+
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+## Arduino Nano 33 BLE Sense Revision 2
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+
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+BMI270 6 axis, Gyrometer & Accelerometer
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+
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+BMM150 3 axis, Magnetometer
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+
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+2-4s Input Voltage (21V max)
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+
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+APDS 9960 Proximity sensor that can be used to reset zero
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+
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+This is a very nice Gyrometer chip, it's very stable in no-magnetometer mode.
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+
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+
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+
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## Core list
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## ref
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-- [[arduino-ide-dat]]
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+- [[arduino-ide-dat]]
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+
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+- [[arduino-boards]] - [[arduino]]
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Tech-dat/Sensor-dat/sensor-motion-dat/9-axis-IMU-dat.md
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-
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-# 9-axis-IMU-dat.md
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-
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-BNO055
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-
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-- [[MPU9255-dat]] - [[invensense-dat]]
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Tech-dat/Sensor-dat/sensor-motion-dat/9-axis-IMU-dat/9-axis-IMU-dat.md
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+
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+# 9-axis-IMU-dat.md
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+
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+- BNO055
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+
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+- [[MPU9255-dat]] - [[invensense-dat]]
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+
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+- LSM9DS1
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+
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+
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+
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+## ref
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+
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+- [[sensor-motion-dat]]
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Tech-dat/acturator-dat/motor-dat/servo-dat/servo-gimbal-dat/servo-gimbal-dat.md
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# servo-gimbal-dat
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-- [[gimbal-dat]]
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+- [[gimbal]]
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![](2025-12-04-01-10-28.png)
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app-dat/RC-apps-dat/FPV-dat/Goggles-dat/Goggles-dat.md
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@@ -11,6 +11,11 @@
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- GogglesX
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- Goggles L
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+
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+
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+
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+- [[head-track-dat]] - [[head-track]]
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+
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## pair
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3. **Enter auto-scan mode on goggles**
app-dat/RC-apps-dat/quadcopter-dat/quadcopter-dat.md
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@@ -3,6 +3,8 @@
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- [[Coreless-Motor-dat]] - [[motor-dat]]
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+- [[fpv-dat]]
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+
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## Multirotor Drones (or Multirotor UAVs).
app-dat/RC-apps-dat/rc-rover-dat/rc-rover-dat.md
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## features
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-- [[servo-dat]] - [[gimbal-dat]] to take action or control [[sensor-Camera-dat]]
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+- [[servo-dat]] - [[gimbal]] to take action or control [[sensor-Camera-dat]]
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- [[DCDC-down-dat]]
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app-dat/gimbal-dat/gimbal-dat.md
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+
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+# gimbal-dat
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+
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+- [[servo-gimbal-dat]] - [[RC-gimbal-dat]]
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+
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+## pan & tilt
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+
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+
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+### Pan
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+Horizontal rotation (left ↔ right)
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+
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+Rotates around the vertical axis
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+Example: moving a camera from left to right to follow a person
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+
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+### Tilt
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+
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+Vertical rotation (up ↕ down)
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+Rotates around the horizontal axis
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+Example: moving a camera upward to look at the sky
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+Simple way to remember
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+Pan = left / right
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+
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+Tilt = up / down
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+
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+
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+
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+
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+## ref
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+
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+- [[gimbal]] - [[m]]
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+
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+
app-dat/head-track-dat/head-track-dat.md
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+# head-track-dat
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+
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+
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+## DIY build head tracker
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+
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+- [[arduino-dat]]
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+
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+https://github.com/headtracker/HeadTracker
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+
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+
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+The Nano 33 BLE + Nano 33 BLE Sense are now both obsolete. Their replacements are
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+**Nano 33 BLE Rev 2 and Nano 33 BLE Rev 2 Sense**
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+
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+!!! There are issues with the code in v2.2 on these boards. It's not reliable. Please see Discord #test-firmware or GitHub actions for the most recent updates. We need more feedback on the state of this code. Thank you.
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+
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+
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+## ref
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+
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+
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+- [[head-track]]
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