- Discrete LEDs
- Dot/Bar LEDs
- Matrix LEDs
- 7-Seg LEDs
- Serial -- Software
- Serial -- Hardware
- RS-232 via the MAX3232
- I2C -- EEPROM
- I2C -- DS1307 Real Time Clock
- 1-Wire -- DS18B20, Powered, Single-Drop
- 1-Wire -- DS18B20, Powered, Multi-Drop
- 1-Wire -- DS18B20, Parasitic, Multi-Drop
- TI Link Protocol -- Calculator Demo
- Infrared Communication
- MIDI -- Output Demo
- MIDI -- Input Demo
- MIDI to Analog Synth
Motor Direction Control #3
Now here's a slick alternative to the discrete H-bridge of the previous exercise. This uses the Texas Instruments SN754410 Quad Half-H Driver chip to bring the parts count down dramatically. Internally, however, the behavior is identical. In fact, we can use the exact same software with no change. You might want to refer to the Motor Direct Control #2 exercise to refresh your memory of what to expect.
The schematic is a breeze now:
If this cool part is new to you, check out the data sheet:
I believe I procured mine from SparkFun Electronics a half-decade ago.
Click to get the source code.
Click to get the schematic PDF.
Next Project: Servo Motor Demo