Go Down

Topic: MAX7456 OSD Shield (Read 2372 times) previous topic - next topic


Nov 22, 2011, 04:05 pm Last Edit: Nov 22, 2011, 04:07 pm by TonyD Reason: 1
Here's a beta release of a On Screen Display (OSD) shield I've been working on, it still needs a bit tiding up.

It uses a MAX7456 from Maxim for the video overlay function. The MAX7456 is connected to the Ardunio's SPI port (MOSI, MISO and SCK) and a double row of 0.1 headers can be used to choose which digital pin drives chip select (CS) for the MAX7456.

In addition to the MAX7456 OSD chip, there's also a DS1307 Real Time Clock (RTC) with battery backup for displaying time and date to video feed.

I designed it using DesignSpark PCB, pulling in the MAX7456 footprint from the Sparkfun PCB library. I'll post design files and gerbers shortly.

For software, I used code from forum members dfraser and zitron in this forum post.


For software, I used code from forum members dfraser and zitron

That library has been updated a few times, including a recent update that allows you to use the 7456 out of the box - no character set re-flash required.



Thanks J, I'll checkout the update software

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131