Clear up Your TTL Video Woes With An RP2350

Before HDMI and DVI there was VGA, and earlier than that? TTL RGB, through which as an alternative of analogue voltages, the connector carried TTL logic voltages. TTL screens was ten a penny as a result of no one needed them within the VGA period, however the many years haven’t been variety to the TTL video aficionado. Stuck with a TTL card and no suitable monitor? Never worry, for [Charlysan] has your again with a TTL-to-DVI converter using an RP2350. The PIOs are used to pattern the TTL enter to a framebuffer, and the remainder of the 2350 does the DVI magic utilizing PicoDVI.

It requires a little bit of stage shifting {hardware}, which at minimal generally is a set of resistors, and it targets the Waveshare RP2350-PiZero which comes with a useful ready-made HDMI socket. There’s a USB serial terminal to handle the factor, for which there’s even a TK GUI script.

This is the kind of undertaking which can by no means be heart stage, but performs such an important perform that it turns into indispensable. It’s not the primary such undertaking we’ve seen, a previous one did the same for VGA.