For microcontrollers without an analog-to-digital converter or when you want a higher-precision ADC, the ADS1015 provides 12-bit precision at 3300 samples/second over I2C. The chip can be configured as 4 single-ended input channels, or two differential channels. As a nice bonus, it even includes a programmable gain amplifier, up to x16, to help boost up smaller single/differential signals to the full range. Adafruit like this ADC because it can run from 2V to 5V power/logic, can measure a large range of signals and its super easy to use. It is a great general purpose 12 bit converter.
The chip's fairly small so it comes on a breakout board with ferrites to keep the AVDD and AGND quiet. Interfacing is done via I2C. The address can be changed to one of four options (see the datasheet table 5) so you can have up to 4 ADS1015's connected on a single 2-wire I2C bus for 16 single ended inputs.
To get you started, Adafruit have example code for both the Raspberry Pi (in Adafruit's Adafruit Pi Python library) and Arduino (in Adafruit's ADS1X15 Arduino library repository) Simply connect GND to ground, VDD to your logic power supply, and SCL/SDA to your microcontroller's I2C port and run the example code to start reading data.
- WIDE SUPPLY RANGE: 2.0V to 5.5V
- LOW CURRENT CONSUMPTION: Continuous Mode: Only 150µA Single-Shot Mode: Auto Shut-Down
- PROGRAMMABLE DATA RATE: 128SPS to 3.3kSPS
- INTERNAL LOW-DRIFT VOLTAGE REFERENCE
- INTERNAL OSCILLATOR
- INTERNAL PGA
- I2C INTERFACE: Pin-Selectable Addresses
- FOUR SINGLE-ENDED OR TWO DIFFERENTIAL INPUTS
- PROGRAMMABLE COMPARATOR
- This board/chip uses I2C 7-bit addresses between 0x48-0x4B, selectable with jumpers
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Documentation and Resources:
- Raspberry Pi Workshop for Beginners
Welcome to the Raspberry Pi Workshop for Beginners! Here you'll be able to follow along with our series of bite-sized videos that cover everything you'll need to know to get started with your Raspberry Pi, and start making awesome projects. My name...
- Getting Started with the Raspberry Pi 3A+
There is a new board in the Raspberry Pi family! In this Tutorial, we will walk you through the steps to set up your new Raspberry Pi 3 Model A+.To setup your Raspberry Pi 3A+ you will need: A Raspberry Pi 3A+ A Preloaded NOOBS SD Card A power ...
- How to Connect to your Raspberry Pi 3 Model A+ Remotely Using SSH
Sometimes a good Raspberry Pi project needs to be in a place that just hard to reach. The Raspberry Pi 3 Model A+ has a small form factor and is well suited for being tucked away inside a box, ceiling, or wherever your project demands. It's not pra...
- Raspberry Pi 3 Model A+ Comparison
Introduction There is a new Raspberry Pi! The long-awaited upgrade to the Rasberry Pi 1 Model A+ (Rpi1 A+). In this article, we are going to look at how much improvement the new Raspberry Pi 3 Model A+ (Rpi3 A+) is over the Rpi1 A+ as well as ...
- The Maker Revolution
The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...
- Mass SD card Image Writer
We've built a mass SD card writer using a Raspberry Pi 3 Model B, some USB hubs and SD card readers. This beast has enough ports to write 49 SD cards at once! At Core Electronics, sometimes logistics hang-ups mean that suppliers cannot meet our demand for pre-flashed SD cards. During these periods we have to pick up the slack by manually imaging blank SD cards we source ourselves. Of course, this is a super-tedious process, and ...
- Raspberry Pi IoT Doorbell
This Raspberry Pi, IoT Doorbell is basically a simple smart Door Bell, which takes a photo of whoever rings it, and emails it to the specified email address, and keeps all the photos in a folder. (along with going Ding-Dong). Any Problems, just leave a comment/start a discussion below....
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