Python interpreter shell start a new python interpreter by typing python or python3 depending on whether you have installed piface software for python or python3 into a terminal. Welcome to piface control and display cads documentation. By the way, these are very basic programming constructs variables and object references so make sure you get comfortable with programming in general and programming in python in specific before attempting more complicated code. The headless master rpi has a piface digital to control the start of measurements. Feb 24, 2016 python interface for piface relay plus. I have a raspberry pi with piface digital attached. Piface digital first steps with python to use piface with python import the piface. The headless slave pi, is equipped with piface relay plus.
Im trying to get raspberry pi 2 to talk to the piface relay plus board. Install pifacedigitalio for python 3 and 2 with the following command. First i did the install as per mikes comment of the 31st july 2019 and then turned relay 0 on using the python example given at the bottom of the original post. Piface digital 2 setup and use element14 piface products. These photos show the piface fitted to a raspberry pi. Wiringpi supports a devlib module for the piface board the piface is an io expansion board for the raspberry which features 8 open collector outputs, 2 relays and 8 inputs. See the wiringpi download and install pages for more details. Jul 25, 2012 these photos show the piface fitted to a raspberry pi. Install pifacerelayplus for python 3 and 2 with the following command. There are three main functions to control the interface. You can also find the documentation and some examples installed at. Piface digital 2 has two changeover relays in parallel with the first two outputs. Note you may need to fiddle with the contrast settings in order to see characters on the screen.
To turn the first relay on, start a new python interpreter and type the following. Other piface products includes piface control and display, piface control and display 2, piface digital 2 and piface pi rack. Filename, size file type python version upload date hashes. A downloadable suite of python based software is available allowing users to interact with any connected devices. The simple answer is to download and install the correct version of pifacecommon direct from the piface github site. If you want to use scratch with your piface digital, you will need to install the piface scratch handler. Piface relay plus for raspberry pi model b plus element14.
The 9 screw terminals at the bottomfront of the photos are the output pins power is the pin on the left, the 2 sets of 3way screw terminals are the relay outputs and the set of 9 at the topback are the inputs with 0v being the one on the left, closest to the composite video output. I am studying how to work with the rasberry pi and the piface right now. Top pin common bottom pin inputs the eight input pins detect a connection to ground provided as the ninth pin. These functions are fairly well fixed in the hardware 1, so only the read, write and internal pullup commands are implemented. With the latest version of raspbian installed you can easily install piface digital software with aptget. Common classes and functions for interacting with piface products. Toggle output pin 0 on by clicking on it the piface interface will click as the relay turns on and the corresponding led will illuminate. You do need to be root to run the program for now, so after typing make, then type sudo. First steps with piface digital and python raspberry pi. There was a long delay between clicking on buttons and the relays being activated. Piface install piface digital software which python is.
Python 2 is the most widely used of these two though the python community has been moving towards python 3 more and more. Piface install piface digital software installing piface. These functions are fairly well fixed in the hardware 1, so only the read, write and internal pullup commands are implemented the gpio command hardwires the piface pin numbers to 200 through 207 for both reading the inputs and writing. Download the debian package from here and install with. I have a piface digital 2 and a pi i 3 with the latest debian and pixel installed. We want to manually control the outputs, so in the piface emulator window, click enable output control. The spi interface driver is included in the latest raspbian distributions but is not enabled by default. You may need to fiddle with the contrast settings in order to see characters on the screen. The pifacedigitalio python module provides functions and classes for interacting with piface digital. The issue is that their is limited forwards and backwards compatibility between these two versions of python, so most python 2 files have to be ran with the python command and python3 files with the python3 command. Get your raspberry pi ready for piface digital and install and test its software.
With piface digital 2 you can detect the state of a switch, for example from a door sensor, a pressure pad or any number of other switch types. Ive got as far as being able to switch the leds on and off from a command line python script, however every time the script is called it resets the board when the init command is given. Piface relay extra is an expander board to the piface relay adding four more relay outputs to the already existing four on the piface relay. Piface howto get your raspberry pi ready for piface digital and install and test its software. Install piface digital software first steps with piface. Piface install piface digital software piface and python.
Turn the small screw located by the gpio pins on pifacecad. The piface is an addon board for the raspberry pi featuring 8 opencollector outputs, with 2 relays and 8 inputs with 4 onboard buttons. The simple answer is to download and install the correct version of. First open a terminal window and start the python interpreter by typing. I have apache web server running on it and have saved some python scripts to turn on and off the relay. Subtitute python3 for python if you want to install for python 2.
Piface digital 2 board can not locate packages to install wmrg1057 aug 28, 2017 7. The piface is an io expansion board for the raspberry which features 8 open collector outputs, 2 relays and 8 inputs. The same source code archive can also be used to build. Lighting control, motor control, solenoid control, model railway. How to combine piface relays raspberry pi stack exchange. I originally wrote the cgi scripts in python using the piface module, but performance wasnt very good. For most unix systems, you must download and compile the source code. Contribute to pifacepifacedigitalio development by creating an account on github. I have turned on spi and installed, following instructions here when running a sample program i get the. Install pifacecad for python 3 and 2 with the following command.
Piface relay plus the base board has four configurable inputs. Dec 10, 2015 the piface digital inputoutput module. Each of the eight relays can be software controlled to switch up to 2amp dc loads and has normally open and closed contacts terminated into quality screw terminals. Piface digital 2 board can not locate packages to install. Nov 04, 2014 piface relay comes with 3x pillarsstandoffs to support and mount on top of the raspberry pi and a extended 40way connector. The pifacerelayplus python module provides functions and classes for interacting with piface relay plus. Enable the spi module piface boards communicate with the raspberry pi through the spi interface. Contribute to piface pifacedigitalio development by creating an account on github. To use piface digital with python, import the pifacedigital module. The piface interface will click as the relay turns on and the corresponding led will illuminate. I rewrote the scripts in the bash shell scripting language using the. The code will run through the states and wait for the command to repeat the measurements when ready. I cant seem to get anything executed once i press one of the 4 switches on the piface. Python code for piface products can be written in two ways, using a python interpreter shell or by writing and saving your program with a text editor.
Piface install piface digital software piface digital. My first question is, is the piface digital 2 compatible with the pi 3. Piface inputlistener switch to turn on leds in python. The licenses page details gplcompatibility and terms and conditions. Historically, most, but not all, python releases have also been gplcompatible. Piface digital 2 introduction i used the piface get started guide created by joseph man for the previous version of the piface digital as my starting point as i was unable to find any documentation specifically for the piface digital 2 and as both designs appeared to be very similar with only the changes necessary in order to accommodate the 40 pin gpio of the.
Internet to allow you to download packages with aptget. Notice the graphic onscreen updates to show the led being on and the contacts have changed over on the relay and the first output pin is on. The 8 inputs can actually be reprovisioned as outputs but you need to be aware that they have onboard 330. To install the piface digital software run the command. The pifacecad python module provides functions and classes for interacting with piface control and display. Contribute to pifacepifacerelayplus development by creating an account on github. I recently wasted many hours trying to get the piface board to work with python.
197 1536 763 320 1248 173 1323 13 262 411 1115 584 473 1039 1377 1444 1529 1095 611 870 1331 1508 782 1222 620 952 854 493 390 1379 1465 168 1456 748 913 1019 717 170 928 1371