The raspberry pi does not have enough power to switch 16 relays. Each of the eight relays can be software controlled to switch up to 1a dc loads and has normally open and closed contacts terminated into quality screw terminals. Piface relay motor control extra element14 design center. Its not something wed done, so we set about trying to find out for ourselves, and heres some information which will hopefully help. Install piface digital software first steps with piface. Via the i2c port of the raspberry pi you can control up to 8 mcp23017 you can assign 8 different addresses to the mcp23017. Piface motor control extra expansion board, piface. With the latest version of raspbian installed you can easily install piface digital software with aptget. Piface control and display shows status information of your raspberry pi or application and allows you to interact with it through the navigation switch and on board buttons. Piface digital 2 has two changeover relays in parallel with the first two outputs. Piface digital allows you to connect things like switches, lights and motors so your raspberry pi becomes aware of, and can influence the world around it. The pifacecad python module provides functions and classes for interacting with piface control and display. In this example we connected a raspberry pi 3 with 3 relay boards via mcp23017 i2c port expander and switch the relays. Piface howto get your raspberry pi ready for piface digital and install and test its software.
It allows your raspberry pi to detect switches connected to it a door sensor or pressure pad perhaps, a microswitch or. Piface relay extra piface gpio expansion board for. Piface relay plus piface relay plus the base board has four con. Alternatively you can plug the piface relay extra straight into a breadboard and control the relays directly. Relay extra board adds four more relays and four more inputs. Toggle output pin 0 on by clicking on the 0 button. Remote control and monitor your raspberry pi from your smartphone or tablet. Buy the raspberry pi piface relay motor control extra.
Original piface digital piface digital 2 outputs to manually control the outputs, click the output control option in the enable menu. Piface simple digital inputoutput and control for the. 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. These photos show the piface fitted to a raspberry pi. The remaining 16 pins are used by the underlying mcp23s17 driver and should not be used directly. Piface motor control extra requires piface relay board to work your raspberry pi. Piface control and display cad documentation, release 2. The 4 buttons on the piface will control the lcd menu 12 screens. Two hbridge motor controllers on board works with dc and stepper motors. Raspberry pi with i2c port expander mcp23017 16 relay. Piface control and display is easy to program in python making creating portable. Each of the eight relays can be software controlled to switch up to 2amp dc. 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. Wiringpi supports a devlib module for the piface board.
Piface relay plus for raspberry pi model b plus element14. With piface digital you can detect the state of a switch, for example from a door sensor, a pressure pad or any number of other switch types. Allows scratch to control piface digital through mesh. The pifacerelayplus python module provides functions and classes. The headless master rpi has a piface digital to control the start of measurements. Piface control and display is easy to program in python making creating portable projects fun. Piface relay plus provides you with up to 8 relays for your raspberry pi. Our previous distributor is currently having issues with their supply chain. Piface relay motor control extra element14 raspberry pi. A downloadable suite of python based software is available allowing users to interact with any connected devices.
Get your raspberry pi ready for piface digital and install and test its software. The code will run through the states and wait for the command to repeat the measurements when ready. Raspberry pi with a piface 2 digital shield, powered by a 5v relay pcb. Once this state has been detected, you can write your own software for raspberry pi that.
Turn the small screw located by the gpio pins on pifacecad. Picampinoir, piface digital, piface relay plus, sense hat, codebug, python3 and apache2 webserver. The raspberry pi face digital interface expansion board allow the very popular raspberry pi board to control and interact with the real world. You may need to fiddle with the contrast settings in order to see characters on the screen. Piface digital is designed to plug on to the gpio of your raspberry pi, allowing you to sense and control the real world. The piface interface will click as the relay turns. 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. 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 the outputs. If all you need is onoff then any pi compatable relay board will work and you can often have uptp 24v and 5a piface digital for instance if you need to vary the speed then you need to be able to pwm the supply to the motor or use the piface motor but this also requires the new piface digital card, this is not a bad solution if you want to play with other things. I want to get one of these, and some of these, and set up the rpi with some kind of software to automatically turn the outlets on and off based on a schedule that can. We are currently working on an alternative solution and hope to have something in place by the end of the year. To install the piface digital software run the command. The piface arrived with no documentation or software.
A simple c library for accessing piface control and display. 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 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. Its also got an infrared receiver so you can use a remote control handset from your arm chair. The first two outputs control the two onboard relays. 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. Piface motor control extra is a expander board to the piface relay board adding two hbridge motor controllers to the piface relay to control dc and stepper motors in your programs. Install piface digital software piface digital emulator piface. Example software for interfacing minecraft with the real world. The 8 inputs can actually be reprovisioned as outputs but you need to be aware that they have onboard 330. Piface digital for raspberry pi element14 design center. The pi comes with gpio general purpose input output pins that allow software running on the pi to detect, respond to and control aspects of the real world. To install the piface digital 2 emulator software, open a terminal and run the. Piface control and display shows status information and has a navigation switch and infrared receiver so you can control your raspberry pi without a keyboard and monitor.
The piface has also 8 digital outputs, therefore its possible to control the car with two of these if we can push up the digital signal. Its controlled by the same library and command structure. The headless slave pi, is equipped with piface relay plus. Finally i run a pico web server to control the system tested on my previous project.