![]() So SEGMENT_MAP_DIGIT, SEGMENT_MAP_ALPHA has to be changed. So 255 – current_value should work (and it does) on my cards. On my cards I have to add the ON segments. But when I got the second card and it behaved the same way I figured something has changed in the hw.Īs I understand it the mapping SEGMENT_MAP_* in the code are found by calculating the off segments. I have just received two cards from China that breaks this library!Īs I’m new to Arduino (and non of the samples found on the net worked ) I thought I had borked the card by short circuiting it against the usb terminal. If there is something else than a point, it gets cut off anyway. Is that the fault of sizeof(), because it doesn’t want to count ending points, as part of the string? In MultiFuncShield.cpp forcing the last character to be read. Only moves the problem to the opposite side, because the mistake takes place before rightJustify gehts to work.įor the first one I’ve made the workaround by changing the comparator fromįor ( *text != 0 & idx < sizeof(displayBuf) text++)įor ( *text != 0 & idx <= sizeof(displayBuf) text++) Trying to workaround by using the rightJustify as follows Now, it is possible to make the workaround with spaces in between, but them the second problem Kicks in:Ĭauses not displaying the last point of the four decimalpoints. I tried to make a loading bar and Found 2 Bugs:Ĭauses a 3 time overwrite of the first point so that only one Decimal point is displayed. New! Want to control your Arduino with an internet browser? Check out our new Arduino Web Server ![]() Speedometer – (requires magnet and reed switch)Įach of these has scope to be built upon and expanded, but we leave that to you.Sonar ranger – (requires HC SR04 sonar module).Surface incline level indicator– (requires MPU6050 motion sensor).Heart monitor – (requires heart pulse sensor).Part 3 explores working applications using the library and the Arduino multi-function shield: Part 2 demonstrates how the shield library can be used to read values from external sensors, such as temperature, sonar and motion sensors, and how to process electronic pulses from an external source. Part 1 demonstrates the ease with which the Arduino multi-function shield buttons, beeper and display can utilised by using the shield library, thereby making it easier to concentrate on the logic of the application. This series is divided in to three main parts (and is also available as an eBook – please only download from this web site): If you’re a youngster starting out, be sure to have supervision of a responsible adult. We must point out that by following the Hackatronics series, you agree to do so at your own risk, and agree to take full responsibility for any loss or damages you may incur upon yourself or others. Multi-function shield library (download older version 1.2, version 1.1 or version 1.0 if necessary)Īlthough we do everything to ensure our downloads are free from viruses and malware, please check that your virus and malware scanning software is up to date before hand.You can download the multi-function shield library from the link below and install using the instructions from the link above: The most recent library no longer needs TimerOne or Software I2C. Installing the Arduino multi-function shield libraryįor earlier versions of the shield library, you will need to first install the TimerOne and Software I2C libraries using instructions for installing Arduino libraries. Presently, our library only supports the active beeper, although you should still be able to use the passive beeper with your own code. Some shields have a passive beeper, and others have an active beeper. The simplest of the changes is to modify all implementations of WriteValueToSegment() in file MultiFuncShield.cpp. ![]() NOTE there are numerous versions of this shield, with some using a different LED display that requires some minor modifications in the library code. ![]() We got our shield from Hobby Components, but there are a number of other suppliers too. Some familiarity with the Arduino platform is assumed, as is the installation of the Arduino development environment. We also provide a set of real world applications that make use of this library, so those new to coding on the Arduino can experiment with and enhance them. It is for this reason we have developed a library for the multi-function shield we have chosen, and that which simplifies basic I/O operations. Simple I/O that is usually taken for granted on PCs, like reading key presses, outputting to a display, and sounding an alarm, often get in the way of the focus of the main task when developing for microcontrollers.
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