Electronic Supplement to
Performance of Several Low-Cost Accelerometers
by J. R. Evans, R. M. Allen, A. I. Chung, E. S. Cochran, R. Guy, M. Hellweg, and J. F. Lawrence
Table S1. Summary of Box-flip Test Results
| Model | Axes
Tested | Sensitivity Error
(| %FS |) *,† | Polarity
(XYZ) | Offset of Resting
Output (| %FS |) * | Sub-
division † | Orientation
(deg) *,† | Drift (| %FS |
during test) *,† |
| Droid | 9 | 0.1/0.8/1.3 | SN2: + + –
SN3,4: – + – | 0.1/0.3/3.7 | | 0.15/1.04/1.88 | 0.21/3.75/15.23 |
| GCDC | 9 | 0.3/2.0/2.5 | + + – | 0.1/0.4/2.4 | | 0.91/1.68/2.59 | 0.03/0.22/11.96 |
JWF14
(1 g) ‡ | 9 | 1.3/2.0/4.1 | + + + | 0.1/1.3/2.4 | XY 6 | 0.26/0.95/1.99 | 0.01/0.15/0.41 |
| | | | 92.9/94.6/97.1 | Z 3 |
JWF14
(2 g) | 9 | 0.1/0.9/2.1 | + + + | 0.1/0.9/1.4 | XY 6 | 0.45/0.79/1.18 | 0.01/0.11/0.54 |
| | | | 47.4/47.4/48.1 | Z 3 |
| ONaviA | 9 | 0.0/1.1/1.8 | – + – | 1.1/1.9/3.5 | XY 6 | 0.37/0.87/1.31 | 0.00/0.12/0.28 |
| | | | 48.3/50.3/51.0 | Z 3 |
| ONaviB | 9 | 0.1/0.8/2.1 | – + – | 1.1/2.5/5.3 | XY 6 | 0.39/0.63/1.29 | 0.01/0.04/0.18 |
| | | | 48.9/50.2/51.0 | Z 3 |
| Phidget | 18 | 0.1/0.3/2.4 | – + + § | 0.3/0.5/1.5 | | 0.12/0.90/2.28 | 0.00/0.01/0.03 |
* Colored text: Red means out of specification (ANSS); Brown means there is no formal specification but we have concern. "| %FS |" means the absolute value of a percentage of sensor full scale, so a percentage of 1 g or 2 g.
† Where three numbers are given, separated by “/”, they are the minimum, median, and maximum observed values among all axes of all available models, except where “Subdivision” indicates particular axis sets.
‡ The 1-g JWF14 sensors may clip during these tests and are unreliable.
§ As given in manual if USB connector is pointed "North", +Y, however their software claims to flip Y. Thus, if USB connector is pointed "South", –Y, then after this flip the polarity and output order will be positive ("East", "North", and Up), so (XYZ).
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