Department of Computer Science Course: CS 4723

(Possibly) useful links for CS 4723

The following links relate directly to things discussed in class, or used in the labs, and may provide additional interesting or useful material:

Material for labs

• Color codes for resistors
• Datasheet for 7 segment display (pdf)
• Times for music notes (pdf)

Data sheets:

• Datasheet for LED (pdf)
• Examples of SPI controlled devices
  • Datasheet for the Microchip MCP4921 12 bit DAC with SPI (pdf)
  • Datasheet for the Maxim Semiconductor MAX7221 LED controller with SPI (pdf)
  • Datasheet for the Nordic Semiconductor NRF24l01+ transceiver (pdf)
  • Data sheet for the ADXL345 accelerometer (pdf) A 3-axis accelerometer using both SPI and IIC interfaces
• Datasheet for a RS-232 driver/level shifter (pdf)
• The HD44780 LCD display driver
• The 74HC595 8-bit shift register
• The L293D half H-driver
• Datasheet for a typical crystal (pdf)
• Datasheet for a typical ceramic resonator (pdf)
• A reflective optical sensor An IR led and phototransistor packaged side by side (4 pages)
• A slotted optical sensor A photointerrupter - an IR led and phototransistor packaged together, with an intervening slot (3 pages)
• An IR receiver module for remote controls A typical 38 KHz IR receiver with noise rejection (7 pages)
• A popular NPN bipolar transistor - 2N2222 A commonly used bipolar transistor, for switching to about 200 ma.
• A popular NMOS transistor - 2N7000 A commonly used NMOS transistor, for switching to about 200 ma.
• A single supply rail-to-rail op amp The Microchip MCP621/4 op amp datasheet (28 pages)
• A single supply rail-to-rail low power op amp The TI TLC225x op amp family datasheet (71 pages)
• The LM324 op amp family datasheet Another single supply op amp (higher voltage, not rail-to rail) (20 pages)
• The MCP9701 temperature sensor Another interesting temperature sensor, with voltage output, 20mv/K (24 pages)
• The LM335 temperature sensor An interesting temperature sensor, with voltage output, 10mv/K (14 pages)
• An ambient light sensor A sensor for ambient light, with a response similar to the human eye (5 pages)
• The LM555 timer A classical timer chip (12 pages)
• The ADXL330 accelerometer The 3-axis accelerometer used in the WIImote (16 pages)
• The ADXL335 accelerometer A more recent 3-axis accelerometer (16 pages)
• The ADXL345 accelerometer A 3-axis accelerometer with digital output -- both TWI and SPI interfaces (40 pages)
• Keypad lock Keypad, interrupting Keypad with leds Some ways to interface a keypad to an AVR processor

Application notes:

• A Real-time Clock using the Asynchronous Timer Local copy of code
• AVR151: Setup and use of the SPI Local copy of code
• Application note on Hardware Design Considerations
• Application note on calibrating AVR internal oscillator using SDK500 Local copy of code
• Application note on calibrating AVR internal oscillator using a UART Local copy of code
• Application note on calibrating AVR internal oscillator using a 32 KHz crystal Local copy of code
• Application notes for op amps A classical collection of application notes for operational amplifiers, from Analog Devices (17 pages)

Reference material:

• Programming 44780 LCD arrays
• Handbook of operational amplifier applications A classical reference of op amp applications, from Texas Instruments, revised 2001 (94 pages)
• Op Amps for Everyone A textbook on operational amplifiers, and an excellent design reference, - excellent section on single supply op amps, from Texas Instruments, (464 pages)
• Differential op-amp single supply design techniques Detailed and specific, from Texas Instruments, (8 pages)
• International Technology Roadmap for Semiconductors A very detailed, and technical, outlook for the semiconductor industry
• Dimensions and capacity im ma-hours for many common batteries

Kicad tutorials and documents:

• A brief Kicad tutorial from teho Labs Kicad is an open source circuit board layout suite including schematic capture, a reasonable part library, and autorouting
• A more involved Kicad tutorial A more structured set of tutorials