[Muth] added an auxiliary display to his motorcycle instrument panel. He started out prototyping with a PIC 16F877A which he used to access information through the ECM diagnostic connection. Once he had that working he found this tiny display which fits perfectly between the speedometer and tachometer. There’s a short demo after the break where you can see a past-30-minute history of the Adaptive Fuel Value and the engine temperature as well as a secondary information screen.
This is another nice addition to our collection of vehicle displays, scooter controllers, gear indicators, and motorcycle computers.
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[Valkyrie-MT] was frustrated by the inability to control TrueHD audio volume from his computer. That’s because digital audio passes through the cable to the receiver where the volume adjustments are done. This meant that his RF computer remote was no good because the receiver uses an IR remote. He set out to find a way to get around this and ended up working with the Consumer Electronics Control (CEC) protocol.
The CEC protocol is a 1-wire serial bus built into the HDMI standard. The solution he settled up required one solder connection on the motherboard as well as the internal USB translator module seen above. That translator box, called the RainShadow, is a PIC 18F87J50 controlled board that translates incoming commands from the USB connection and sends them out as CEC hex codes. A bit of code writing and [Valkyrie-MT] is in business. You can see in the video after the break that it’s not just controlling audio, he can now control the entire entertainment center including turning on the TV and setting it to the appropriate input.
Continue reading “Adventures in Consumer Electronics Control (CEC)”
Who could forget the stereoscopic goodness of a View-Master? [Tuttle] put a modern flair on the classic optical device by adding two 1.5″ LCD screens. The screens replace the film disk of the original, showing slightly different images to produce a 3D effect. No word on a camera rig used to take the original images, but for our money this a great way to make something out of those useless key chain picture frames.
This 64×48 full color LED display goes much further than we expected at first glance. The display is actually a computer with a Zilog eZ80F91 core utilizing an FPGA for the hardware interface. Some nifty applications currently built include mostly games, but there is also visualizations, network file systems, video streaming, and even a MIDI synth.
It originally looked to be more of a console, with controllers, game pads, and cartridges, but the latter ended up not working out. What else would you do with a giant LED display?
So, you want to do some programming but don’t have the budget of a major corporation? This is just the thing for you because all of these development environments are free of charge! Many Integrated Development Environments are marketed towards companies who have money to pay for such expensive environments. Here are the Top 5 Integrated Development Environments that are most widely used and recognized. Some will be used when programming past and future tutorials. The following are listed in no particular order and all make an excellent development environment.
There are alot more IDE’s out there that were not mentioned but should have been. We have posed the question at Hack A Day Answers “What are your Top 5 IDE’s?” Give us some feedback and we will be back with a revised list from the comments you give us!
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[Scott Harden’s] prime number generator exhibits a great way to use an LED matrix to present readable information. The project resides in a hinged wooden box with a grid of holes on the lid for the LEDs. [Scott] has overlaid the matrix with a printout showing powers of two that represent different prime numbers. Inside you’ll find an ATtiny2313 microcontroller that handles the column scanning and prime number testing. We’ve embedded a video the break where [Scott] explains the project in great detail, but you should also check out his prototyping and construction pages.
Continue reading “ATtiny2313 prime number generator”
[Roberto Barrios] picked up a surgical microscope to add to those other fun lab toys you seen in the background. These work very well when soldering small components because they don’t have to be as close to the viewed objects as traditional microscopes. But [Robert] didn’t care for the heat generated by the incandescent bulb so he build his own LED replacement. If you recognize his name it’s because we saw a beautifully crafted in-visor GPS system that he built back in April. This project exhibits the same level of craftsmanship in which he utilized the base of a spare bulb to add an LED, heat sink, and driver board that is adjustable on all three axes.
He also mentioned that he overhauled his site design and it now plays nicely with all browsers.