NovaVGA is a low-cost shield board for the Arduino that provides an easy-to-use VGA graphics output. The adapter is controlled via a simple SPI interface from the Arduino (or any SPI-compatible micro…
NovaVGA is a low-cost shield board for the Arduino that provides an easy-to-use VGA graphics output. The adapter is controlled via a simple SPI interface from the Arduino (or any SPI-compatible microcontroller.)
NovaVGA keeps a 160x120 QVGA frame buffer in SRAM and outputs it to a monitor at an industry standard 640x480 @ 60Hz VGA signal. Meanwhile, the microcontroller is free to write to the SRAM frame buffer at any time via the SPI interface. An Arduino library is provided with several examples.
Video output is 160x120 pixels @ 6-bit color
(2^6 = 64 possible colors)
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Andrew |
Dec. 2, 2020
Great little [pricey] graphics shield!
Soldered on some header pins, downloaded and installed the NovaVGA library for Arduino and away I went. Programming the shield with the official library is a breeze.
Additionally, I created a NovaVGA simulator library so I can try out various graphics routines ahead of uploading my code to actual hardware. It's here if anybody else is interested... https://github.com/ajbkr/SDL2NovaVGA
After calculating cost-per-pixel and especially after factoring in shipping and import charges, this shield does become rather costly for what it provides (160x120 output with 64 colours). A graphical LCD shield works out to be significantly cheaper if you only intend to mess around and you're not too fussed about displaying graphics on a large monitor (or TV paired with a VGA to HDMI adapter).
With respect to import charges, do check the tracking number provided against Parcel Force or Royal Mail if shipping to the UK; the USPS site updates stalled for a bit and I only learnt that import charges were due by entering the USPS tracking number I had been given into the Royal Mail Web site.
I have wired up a PS/2 keyboard to my Arduino Uno/NovaVGA set up. Probably going to make a simple raycasting engine and game, similar to Wolfenstein 3-D.
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