High-range accelerometer board
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Luke Weston
Dec 2, 2011, 1:13:02 AM12/2/11
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Hi everyone,
Feel free to have a look at this and let me know what you reckon.
https://github.com/lukeweston/high-range-accelerometer
This particular accelerometer is a single-axis device, rated for a measurement maximum of 120 g-units.
This should be suitable for an instrumentation and telemetry payload for the Zuni/Sighter program (Which is a project that I am slowly rolling along in the background), where measurement of the acceleration on the order of 80-90 g-units is required during launch.
This accelerometer is mounted on a small separate external breakout board and not mounted on the main board because you want to have the flexibility to mount it with the right orientation that it needs to be in, with the active accelerometery axis aligned with the rocket's direction of flight. (Unless you want your vehicle to end up like the Stardust re-entry capsule.)
There will probably end up being a second accelerometer mounted on the main circuit board, a 3-axis device such as an ADXL345 which will provide accelerometer data in the X-axis and Y-axis (where the Z-axis is defined as being the direction the rocket flies) but the maximum acceleration measurement for this device will be considerably smaller. But that's OK, because the acceleration in the X- and Y-axes will be much smaller than the high acceleration in the Z-axis.
Cheers,
Luke
Feel free to have a look at this and let me know what you reckon.
https://github.com/lukeweston/high-range-accelerometer
This particular accelerometer is a single-axis device, rated for a measurement maximum of 120 g-units.
This should be suitable for an instrumentation and telemetry payload for the Zuni/Sighter program (Which is a project that I am slowly rolling along in the background), where measurement of the acceleration on the order of 80-90 g-units is required during launch.
This accelerometer is mounted on a small separate external breakout board and not mounted on the main board because you want to have the flexibility to mount it with the right orientation that it needs to be in, with the active accelerometery axis aligned with the rocket's direction of flight. (Unless you want your vehicle to end up like the Stardust re-entry capsule.)
There will probably end up being a second accelerometer mounted on the main circuit board, a 3-axis device such as an ADXL345 which will provide accelerometer data in the X-axis and Y-axis (where the Z-axis is defined as being the direction the rocket flies) but the maximum acceleration measurement for this device will be considerably smaller. But that's OK, because the acceleration in the X- and Y-axes will be much smaller than the high acceleration in the Z-axis.
Cheers,
Luke
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