24 bit Delta Sigma ADC with USB Interface
This unit uses the LTC2400 Delta Sigma 24bit ADC chip connected to a Cypress Semiconductor CY7C6300 which is a low speed USB device.[more]
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USB projects
This unit uses the LTC2400 Delta Sigma 24bit ADC chip connected to a Cypress Semiconductor CY7C6300 which is a low speed USB device.[more]
Interfacing Your Computer to an ADC via the Parallel Port
Interfacing an Analog-to-Digital Converter (ADC) with Linux via the parallel port is fairly simple. There two major areas that need to be addressed - hardware and software. The hardware consists of the parallel port, an ADC, and an analog signal source. The software programmed in ‘C’ language.[more]
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How to | PC projects
PICADC- PIC based “intelligent” A/D converter
The PICADC is a simple 12-bit, 8-channel analog to digital converter (with 4 additional digital inputs), which may be connected to the PC through the serial interface (RS232).
The sequence of sampled channels, and sampling frequence are programmed by the PC.
The maximal sampling frequency is limited by the data transmission rate, and at 115200 baud is equal to ca. 3kHz for 1 channel without digital inputs, and to ca. 500 Hz for 8 channel with digital inputs.The analog input voltage range is -2.5V to 2.5V.The digital inputs may be used for recording additional digital signals, eg. the time code used to synchronize the recorded data with other events.The PICADC is based on PIC16F84 (or PIC16C84) microcontroller, and MAX190 (or MAX191) ADC.[more]
PC temperature control
This is a standalone temperature and fan monitoring and control unit for the PC. It uses the temperature readings to adjust fan speeds in order to regulate temperature and noise. The system is flexible in that it can be configured to be either completely autonomous, or set up to be configurable. It is also highly configurable in the setting up of the features and parameters. The entire unit is controlled by the 2 Atmel Mega32 MCUs - 1 for the main control unit and 1 for the RF remote control, with inputs to the ADC (for thermal sensors), port pins, RS232 serial connection and output to the LCD, port pins and RS232 serial connection. The RF remote control controls specific settings of the unit. The main unit is powered off a standard 4-pin PC Molex power connector while the remote control is powered off a 9V battery.[more]
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AVR projects | PC projects
Beam Robot
This robot control by PIC16F818 which has a lot of features that work well in this situation. As you can see from the Schematic and Source Listing, position pulses for the 2 servos are generated dirctly from the PIC. Also, the room light level, battery condition, and servo power draw (indicating mechanical loading) can be measured with the internal ADC.[more]
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PIC projects | robot projects
