Category Archives: HP 3457A

LEDs Give HP 3457A DDM’s LCD Display the Boot

Have you ever been so frustrated with a digital display that you wanted to rip the whole thing out and create a better one? That is exactly what [xi] did. Replacing their constantly used HP 3457A multimeter’s LCD display with a brighter LED one was a necessary project — and a stress reducing one at that.

While this digital multimeter is well-known for its reliability, its standard display is rather lacking. In fact, there are several mods already out there that simply add a backlight. However, as [xi] notes, LCD screens always have a certain angle where they still don’t …read more

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Posted in atmega162, ATmega32, digital multimeter, dmm, HP 3457A, LED display, led hacks | Leave a comment