ADS1115 ADC

ADS1115 is a precision, low power, 16 bit 860 SPS I2C analog to digital converter (ADC). It has internal reference, oscillator, and programmable comparator. ADS1115 modules are readily available at online markets like AliExpress and Adafruit

Figure 1. ADS1115 Adafruit module
( learn.adafruit.com/adafruit-4-channel-adc-breakouts/downloads).

Integration of Accelerometers

We have several 3-axis accelerometers attached to a rigid body at arbitrary positions. The rigid body is moving at arbitrary linear and angular movements, but the accelerometers can only sense linear accelerations. Consequently, the information about angular movements of the rigid body is not available.

A question is whether it is possible to integrate them to get an equivalent accelerometer without using angular movement information.
After consideration, I think the answer for that question is 'YES'.

Controlling Your Hardware from the Web Using Arduino

Using Arduino Ethernet shield 2 to control a hardware from the web is discussed. Arduino Ethernet 2 Library is used to implement in an Arduino Uno board as a server in an example as well as a client in an another example. The latest version Arduino IDE ( 1.7.6 in our case ) is used in the following examples. An Arduino Uno board with Ethernet shield 2 is shown below.

Figure. Arduino Uno paired with Arduino Ethernet shield 2.

Accelerometer LIS3DSH

LIS3DSH is an 3-axis MEMS accelerometer made by STMicroelectronics. Its full scale range is selectable from ±2g to ±16g. The size is small and it is only 3mm x 3mm. Either SPI or I²C can be used to interface with it. Supply voltage is from 1.71 V to 3.6 V. In this article, testing and evaluation of STEVAL-MKI134V1 adapter board is discussed.

Figure. STEVAL-MKI134V1 - LIS3DSH adapter board for standard DIL24 socket.