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Driver for the Pimoroni Automation HAT

Project description

Automation HAT

Build Status Coverage Status PyPi Package Python Versions

Automation HAT is a home monitoring and automation controller featuring relays, analog channels, powered outputs, and buffered inputs (all 24V tolerant). This library will also work with Automation HAT's smaller siblings - Automation pHAT and Automation HAT Mini.

Where to buy

Installing

Full install (recommended):

We've created an easy installation script that will install all pre-requisites and get your Automation HAT up and running with minimal efforts. To run it, fire up Terminal which you'll find in Menu -> Accessories -> Terminal on your Raspberry Pi desktop, as illustrated below:

Finding the terminal

In the new terminal window type the command exactly as it appears below (check for typos) and follow the on-screen instructions:

git clone https://github.com/pimoroni/automation-hat
cd automation-hat
./install.sh

Note Libraries will be installed in the "pimoroni" virtual environment, you will need to activate it to run examples:

source ~/.virtualenvs/pimoroni/bin/activate

Development:

If you want to contribute, or like living on the edge of your seat by having the latest code, you can install the development version like so:

git clone https://github.com/pimoroni/automation-hat
cd automation-hat
./install.sh --unstable

In all cases you will have to enable the I2C bus (and SPI for Automation HAT Mini):

sudo raspi-config nonint do_i2c 0
sudo raspi-config nonint do_spi 0

Documentation & Support

FAQ

What is the accuracy and resolution of the Automation HAT

The ADS1015 is a 12-bit ADC, but since the 12th bit is the sign-bit there are only 11-bits of resolution available for positive voltage readings. The input voltage for 24v channels is scaled from 0-25.85v (25.85 rather than 24 due to how the resistor divider is set up) to 0-3.3v.

Since the full-scale range of the ADC is set to 4.096v, this means that 0-3.3v gives only ~1649 possible usable values making the input measurement granularity somewhere around 0.015v (25.85 / 1649) for the 24v inputs and 0.002v for the 3.3v input.

More information on this topic can be found here: https://forums.pimoroni.com/t/automation-hat-accuracy/7252/3

1.0.0

  • Refactor to gpiod/gpiodevice.
  • Repackage to hatch/pyproject.toml.

0.4.1

  • Update for SN3218 v2.0.0

0.4.0

  • Switch to ADS1X15 library

0.3.0

  • Switch to setup.cfg
  • Switch to markdown based README
  • Support for ADS1115 board variant

0.2.3

  • 0.2.2 + bump for newer examples

0.2.2

  • Had ST7789 on the brain, swapped for ST7735

0.2.1

  • Add dependency on ST7789 for AMH

0.2.0

  • Fix: Fix thread interleaving and race conditions leading to spurious ADC readings
  • Fix: Switch to non-deprecated alias of thread.isAlive

0.1.0

  • Fix: Defer setup to avoid import side effects
  • Fix: Slowed LED update rate
  • Improvement: Switched to warnings to notify about unsupported features on pHAT

0.0.4

  • Fix for HAT/pHAT detection

0.0.3

  • Fix for Python 3 support

0.0.2

  • Added pHAT support
  • Rounded ADC output to 2 decimal places
  • Set initial state for outputs and fixed toggling
  • Fixed light toggling

0.0.1

  • Initial Release

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