Analog Sensor Board¶
The SmartCitizen ASB is an expansion board for the Smart Citizen Kit that provides connectivity to analog sensors with a high precission ADS1115 via I2C, with four configurable addresses. It also gives the possibility to directly hook up this ADC by Adafruit.
We use it to measure low power sensors such as the Alphasense Ltd. electrochemical sensors.
Characteristics¶
Operating voltage¶
Natively operates at 3.3V, but can use also up to 5.5V in EXT-V, and with a selectable jumper. It integrates a level-shifter from the GROVE connector's voltage to EXT-V.
Connectivity¶
I2C, from 3.3V up to 5.5V.
Inputs¶
- 4 channels in the 4-channel version. Daisy chainable up to 4 boards - with a total of 16 analog channels!
- 8 channels in the 8-channel version.