by amandaghassaei @ instructables.com:
I’m working on a project that requires full orientation information, so I built an Inertial Measurement Unit from scratch. I really like the 9DOF IMU board that Sparkfun makes – the calibration code that comes with it is fantastic – but I wanted to redesign the board so that it could be made at a much lower price using a single-sided PCB mill. I think the electronics come out to about $20 for this project. All the code, schematics, and PCB milling files are up on github (click the cloud-shaped button to download).
“9 Degrees of Freedom” IMU - [Link]
by fileark @ electronhacks.com:
BMO from Comedy Central’s Adventure Time is adorable, if only someone would make one that can walk! Atleast we can make one with a personality. Here is a build using easy to get parts including Arduino Pro Mini, Nokia 3310 LCD screen, audio playback, accelerometers, and distance sensors.
The parts added up to around $70.00
DIY Arduino Mini BMO - [Link]
What could you make with a key fob containing a Bluetooth (BCM20737S) Smart chip, gyroscope, accelerometer, compass, barometer and humidity/temperature sensors? Broadcom are hoping their WICED (pronounced wicked) Sense kit will make an ideal development platform for engineers and developers working on the next generation of IoT applications. Together with the hardware Broadcom have an integrated Software Development Kit (SDK) using the WICED Smart SDK v2.1 and a downloadable WICED Sense app from the Apple App store or from Google Play for Android devices to allow interaction with the fob via a smartphone or tablet etc.
Something Wicked this Way Comes - [Link]
Freescale have introduced a new range of 3-axis accelerometers offering high sensitivity at low power consumption. According to Freescale the FXLN83xxQ family is capable of detecting acceleration information often missed by less accurate sensors commonly used in consumer products such as smartphones and exercise activity monitors. In conjunction with appropriate software algorithms its improved sensitivity allows the new sensor to be used for equipment fault prognostication (for predictive maintenance), condition monitoring and medical tamper detection applications.
High sensitivity Accelerometer Family - [Link]
We have already seen a number of ideas for tracking tags seeking funds on Kickstarter, most systems are limited by the range of Bluetooth communication with a smart device. This system from Iotera tackles the problem using cloud-based thinking: The basic wireless system consists of one or more tags or ‘iotas’ and a home base unit. Each 22 x 11 x 3 mm iota contains a chip, accelerometer, temperature sensor, speaker, RF transceiver, Bluetooth (unused so far) and a battery to give up to three months operation. Each iota communicates with the home base unit using wireless channels in the 902 to 928 MHz band giving a range of up to four-miles. Back home, the base unit receives the low-speed transmissions from the iota tag and forwards the information to a server via a Wi-Fi connection.
Novel Cloud-based Tag System - [Link]
Designed for high-precision, always-on, six- and nine-axis applications, such as smartphones, tablets, remote controls, and game controllers, the BMI160 inertial measurement unit (IMU) combines a 16-bit, 3-axis, low-g accelerometer and ultra-low-power, 3-axis gyroscope. When the accelerometer and gyroscope are in full operation mode, typical current consumption for Bosch Sensortec’s IMU is 950 µA.
Inertial Measurement Unit Consumes Less Than 1 mA - [Link]
The world’s smallest inertial sensors have already taken China by storm and are poised to take on the rest of us with their software iGyrpo which is affordable by any smartphone or tablet maker: R. Colin Johnson @NextGenLog
Worlds Smallest Acceleronmeter Priced for Any Budget - [Link]
Get fit for summer with your own activity monitor from this Adafruit Tutorial!
Keep that New Years resolution of getting fit by staying safe with a neopixel motion activated running band powered by Flora, Adafruit’s wearables electronics platform.
This is the activity monitor you’ll want to wear outside and at the dance club!
Get Fit For Summer With A DIY Neopixel Motion Activated Running Band - [Link]
This guide is intended to everyone interested in in using Accelerometers and Gyroscopes as well as combination IMU devices (Inertial Measurement Unit) in their electronics projects
– What does an accelerometer measure?
– What does a gyroscope (aka gyro) measure?
– How to convert analog-to-digital (ADC) readings that you get from these sensor to physical units (those would be g for accelerometer, deg/s for gyroscope)
– How to combine accelerometer and gyroscope readings in order to obtain accurate information about the inclination of your device relative to the ground plane
Accelerometer & Gyro Tutorial - [Link]
The accelerometer can measure acceleration in two axis using Analog Devices ADXL202. +-2g can be measured in each axis.
The accelerometer can measure acceleration and time. Using the time and the acceleration it can calculate and display:Time (s)
- Average acceleration (m/s2)
- Instantanous acceleration (min/max) (m/s2)
- Speed (m/s & km/h)
- Distance (m & km)
The mass of the object can also be input, the accelerometer can then also display:Instantenous Force (N)
- Average Force (N)
- Instantenous Power (kW and HP) * .
Bullit Accelerometer – Accelerometer with microcontroller and display - [Link]