Pi Video Output Using pygame from the Adafruit Learning System @Raspberry_Pi #piday #raspberrypi
One of the biggest advantages of the Raspberry Pi as a development platform is the easy access you have to a lot of mature, well-designed SW stacks and libraries, making it relatively trivial to perform tasks that would be very complex or time-consuming to implement on deeply embedded mcu-based systems.
One of the areas where this is particularly true is with graphics and user interfaces. The HW requirements are fairly high to be able to work with large displays (larger than say 320×240 pixels), and even if you can meet the timing requirements — a 7″ 800×480 display probably requires ~40MHz for the pixel clock — there are very few open source or inexpensive graphics frameworks out there to render the kinds of modern UIs people expect today.
The Pi is really stands out here since it’s trivial to render complex UIs, taking advantage of modern features like Unicode text and complex scripts, and being able to use different fonts without having to worry about memory and rendering time (it can take a couple hundred KB of SRAM to render a TTF on an embedded system, and the libraries to interpret them are both large and complex), etc. You can also easily display the graphics on any inexpensive composite television or HDMI monitor, which is amazing for a $35 board … more than the cost of many LCDs!
NTSC/PAL (Television) TFT Display – 7″ Diagonal – Yes, this is an adorable small television! The visible display measures only 7″ (17.8cm) diagonal, the TFT comes with a NTSC/PAL driver board, enclosure and stand. The display is very easy to use – simply connect the included 12VDC adapter to the 2.1mm center-positive DC jack, then connect a composite video source to one of the RCA cable. (read more)
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.