I've interfaced my Tiva LaunchPad (ARM Cortex-M4) development board with a small LCD screen as shown in the video below. The LCD screen is a Newhaven display, model number NHD-0420H1Z-FL-GBW-33V3.

Below is a circuit diagram I've drawn to show how everything is setup. It's fairly simple as…

I've figured out how to use DMA (direct memory access) on the Tiva LaunchPad (ARM Cortex-M4) microcontroller when using peripherals like an audio output DAC (digital to analog converter).

The DMA controller on the Texas Instruments Tiva LaunchPad is known as "micro-DMA" and is abbreviated as "μDMA…

Lately I've been working with using I/O expanders in conjunction with my Texas Instruments Tiva LaunchPad. The Tiva LaunchPad has a limited number of I/O pins and I'm trying to increase the number by using I/O expander chips.

I came across this YouTube video which shows how to use an MCP23S08 I/O …

I've figured out how to interface my Tiva LaunchPad with a better quality DAC (digital to analog converter). Video example:

Earlier, I'd been using a simple 8 bit DAC made from a handful of 22K resistors that sounded, well, less than optimal. I'm now using a 16 bit integrated circuit DAC…

I've completed my next Tiva LaunchPad project. I created a simple drum machine. Press a button and an audible 8-bit drum sample is played back. A video explaining and demoing it is below. A link to the C program I wrote which runs on the LaunchPad is given below as well.

If you're inter…