This project didn’t look complicated but it was. The MCU part is really simple: just some code for the Display, Keypad and DDS Communication. A DDS AD9833 from Analog Devices is a chip that is driven by a hi-frequency oscillator. I used a 50 ...
23-04-2012
Part 1 - Specifications and Schematic The data is recorded as the Comma Separate Value (CSV) file to the SD/MMC memory card. The interval between sample is programmable from 10 secs to 60 mins. The optional digital input signal, pulse, and ...
13-04-2012
Build a lab-grade data logger with PIC microcontrolller and a 20-bit delta-sigma converter. A new design of a lab-grade data logger has been developed using a PIC microcontroller and a 20-bit delta-sigma converter. The data logger provides ...
08-04-2012
This experiment shows how to turn LEDs into light sensors. Since the Blinkenlight Shield has 20 of them this turns the Blinkenlight Shield into a 20 pixel „camera“. Schematics Before I explain why the schematics got their current form ...
06-04-2012
William Grill, Riverhead Systems, Greeley, CO; Edited by Paul Rako and Fran Granville -- EDN An eight-pin micro multiplies, monitors, and delivers a boosted voltage to a load The circuit in this Design Idea uses a Microchip PIC12F510 controller to ...
30-03-2012
Part 1 - Schematic Part 2 - Construction Notes, Fan Types and temperature sensors A new version (v1.1) of the Windows desktop application is available. The significant differences from the first version (v1.0) are: A new menu item (Program ...
15-03-2012
Part 1 - Schematic Buck Converters This is a simple buck converter design and the output contains a lot of switching noise and is not very linear with respect to the control signal. This does not matter as a fan is just an electric motor and does ...
15-03-2012
The Intelligent Fan Controller is designed to control the noise generated by the fans inside your computer. It does this by varying their speed based on temperatures measured inside the case. When it is cool the fans will run slowly and they will ...
15-03-2012
This project describes an easy and inexpensive way of adding a digital thermometer and data logging feature to a PC. It involves a PIC microcontroller that gets the surrounding temperature information from the Microchip MCP9701 sensor, and sends it ...
27-02-2012
Vassilis Serasidis Introduction This mini Logic analyzer is a tool for you to watch on LCD the logic transitions 0 or 1 of a digital data signal. A digital data signal can be found on the output pin of TSOP-1736 Infrared Receiver, on the Transmit ...
26-02-2012
