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Forget Me Not Design Challenge

27 Posts authored by: COMPACT Top Member
“Forget Me Not and Remember Me Always”“Learn what you can do with the B+” I just can’t wait for the video!Today EnOcean, Tomorrow the World!! Figure: Playing Music from OpenHAB   Many thanks to all the sponsors who have put faith in me to participate in this RoadTest Design Challenge. Raspberry Pi, OpenHAB, CadSoft EAGLE ,Tektronix, iot eclipse.org , EnOcean and Element 14! Unlike the John Lennon’s saying that life is what happens to you while youR ...
The X Files - Do you want to Believe?  That X10 originated in Scotland? Well apparently it did in 1975. For those who don't know X10 of a power line and radio protocol that is used for controlling home lighting and appliances. For power line transmission a parasitic signalling regime that is sent over domestic electrical wiring. The radio protocol was introduced later to support wireless remote control and operates on the 433MHz band (310MHz in the USA). The powerline method is an anci ...
Three's a Crowd  The easiest way I could think of to monitor the cat bowl is to have a fixed camera overhead. If you're unsure you've fed your cat then whip out your phone and check to see if the cat bowl is full.   For this challenge I have already got two cameras working with a Raspberry Pi and OpenHAB. One camera is one the Raspberry Pi hosting OpenHAB and the other is a PTZ (Pan, Tilt and Zoom) Network Camera.   Now I've got a third for the cat bowl. I've now configured a ...
Poll Dancing Figure 1. If you look carefully you'll see the new addition at the bottom left hand corner and if you look very very carefully an attached DS2401! (and 3 Oscilloscope leads - two for I2C bus observation and the other for 1-Wire bus observation).   As previously mentioned that the COMPACT TOP HAT would support the 1-wire interface. Well that feature has come to fruition with the delivery of some DS2482S-100+ Single Channel 1-Wire Masters. This little chip saves the Raspber ...
The Master of a Million Disguises! Figure 1. Initial PSoC4 tests using a CY8CKIT-049 4200 with the Compact TOP HAT with concurrent UART and I2C interfaces active. (The blurry lead is a MiniProg3 used for single step debugging.)   My Compact HAT enables a PSoC to be easily connected. The design has a PSoC connected to the Raspberry Pi's Serial Port, I2C, SPI port and some GPIOs. The intention is to have; SPI port as an interface option I2C port as an interface option Serial Port as ...
Formal Wear for the Raspberry Pi I've made my own HAT for my Model B+ Raspberry Pi. It's dimensions meet the official specifications and includes the slot for the camera cable and the notch for the LCD cable. My HAT provides me with HAT ID Autoconfigure EEPROM I2C connector Serial Port Connector 2 x PMod SPI Connectors DS1721 I2C Thermometer MCP23017 I2C 16 bit I/O Expander and soon also support the 1-Wire Interface The board was designed also alternately host a PSoC. Unlike the lucky ...
Can you Please Repeat from the Start? Figure 1. Proof that Raspberry Pi supports Repeated Start conditions (annotated with Green Left Brackets)   I2C is not as straightforward as some people think and there are a couple of wrong assumptions floating out in cyberspace. Unlike the asynchronous RS-232 protocol where there is always a start bit followed by some payload with optional parity bits and terminated with some stop bits, I2C support transactions that contain multiple Start conditio ...
Expect the Unexpected Figure 1. - A test picture taken by Rpi with OpenHAB when pressing a door bell.   I've been using Raspian Wheezy built on NOOBS 1.3.9 and today I ran a sudo apt-get update to synchronise it with some other Raspberry Pis and it broke things. In particular the Pi Camera utilities stopped working. This was resolved by running sudo apt-get upgrade. This downloads a whole heap of files and takes a while to apply the upgrade but now the Camera works again!   Phew ...
ID-IOTic  This is just an text only update post to inform you of my current progress. The Raspberry Pi in combination with openhab is quite a powerful combination. Thus far I have managed to get openHAB up and working well. Amongst other things I've got it: Working with RPi GPIO Output Pins Responding to RPI GPIO Input Pins Sending emails on demand Capturing images using the Rpi Camera Controlling a remote PTZ Web Camera (Pan, Tilt and Zoom) Recording video footage Controlling and ...
Are you in a Bind?  The poor documentation can make things seem more complicated than they really are. Getting an Raspberry Pi output pin working on OpenHAB is actually much easier than you are led to believe.   Here's a quick example on how to get an LED and current limiting resistor connected to Pin 11 (GPIO17) up and going. All one needs to do is to; 1. Ensure that the GPIO is not exported and used by another process. 2. Connect the LED and resistor. 3. Copy the gpio binding ...
What a Tight Squeeze! Figure 1. A WiFi SqueezePlay under iPAD openHAB control   I seem to be working backwards. I built up a Raspberry Pi Model B+ with a NOOBs SD Card and installed OpenHAB 1.5.1 with root privileges using sudo. This seems to work considerably better than my first attempt where I was experiencing very slow performance and frequent lockups.   One of my goals was to get Squeezebox peripherals working and I have done just that. I have successfully got a SqueezePlay ...
Wicked Wireless Since being grounded without the capability of operating EnOcean Sensors at 868MHz I've had to resort to other methods. I had a cheapo 433.92MHz Transmitter and Receiver in the lab that had never been used so I hooked it up to see if it was a suitable for the task or not. The maximum power limit I can use is 25mW and the transmitter has an output of 10mW. One immediate limitation is that this configuration is single direction simplex communication link so there is no feed ba ...
Postcards not from the Edge   I'd like to thank Cypress SemiConductor for sending me out two new CY8CKIT-049 PSoC4200 Prototyping kits. They arrived in quite novel packaging. I was privileged enough to receive an engineering prototype earlier and was going to use it for this challenge but was provided the released versions to showcase them. The engineering prototype contained just a PSoC 4200 on a 600mil DIP breakout board so I performed programming and debugging with a MiniProg 3. The ...
MODULARITY  EAGLE SCHEMATIC MODULES (The add video from "my videos" seems a little buggy as it won't list my new video - Also the import conversion made it fuzzy - use full screen for a better view). Fig 1. A Silent Video of Eagle Module Creation   EAGLE 7.1 adds some elementary hierarchical schematic support by the definition of module schematics.To my knowledge this hierarchical support does not extend to EAGLE's PCB design as this a completely different kettle of fish. To use i ...
I have no idea what happened to part 10.   Does  anyone? ...