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Resistance & Capacitance Meter using a PIC 16C622 - Microchip Application
Note Published 26-Aug-97 (app note added 2/06) |
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Resistor Sub Box - Commercial substitution boxes uses a lot of switches and
a set of fixed resistors. The advantage is that they have a large range of resistance
and work at higher voltages. This device is only good for use in circuits of 12
volts or so but it is much smaller and cheaper....[Luhan Monat - Mesa Arizona] |
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RF Remote Controller - Scroll down to find link to circuit drawing
and circuit explanation….(circuit / schematic design added 09/06)
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RGB LED colour wash light - This PIC based circuit uses Red, Green
and Blue high brightness LEDs that are pulse width modulated (PWM) to vary
the intensity of each colour LED. This allows effectively any colour to be
generated. The circuit is designed to fit into a low voltage Halogen
light fitting. A look up table is used to program(added 11/05)
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RLC circuits match transmission lines to loads - 04/10/97
EDN-Design Ideas....EDN is migrating links. This link is not verified.
Search the "title" EDN for new link. |
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Rolling code generator uses flash microController - 05/03/01
EDN-Design Ideas....EDN is migrating links. This link is not verified.
Search the "title" EDN for new link. |
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Rotating Sprocket Wheel Generator PIC16F84 - (electronic circuit added 7/03)
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Routine automates pattern/sequence detection - 16-May-02 Issue of EDN
Sequence detection is a common operation in many communication and security systems.
Some good examples are HDLC-flag identification and signature analysis. As the
complexity of the system increases, designing circuitry for sequence detection becomes
tedious and laborious. Using the software tool in this Design Idea, you can generate
HDL code in VHDL or Verilog formats for both Mealy and Moore....[Design Idea by K
Venkatachalam, Murugesh Rajiah, and Vijayakrishnan Rousseau, Tata Elxsi Limited, KR
Puram, Bangalore, India] |
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Routines directly measure microcontroller bus clock - 25-Oct-07 Issue of EDN
You can verify the bus frequency of the HC08 SCS08 microcontroller with simple control
loops....[Design Idea by Kerry Erendson, Bulova Technologies] |
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RS232 Expander - Simple hardware expands COM1 to COM1/1 and COM1/2.
….(electronic schematic added 06/09) |
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RS-232 Xlater - A simple terminal program on a PC can have a lot of uses.
The hang-up is that most of those uses involve communicating with a device running on
5 volts. I've done several schemes over the years but this one is my
favorites….. [Luhan Monat - Mesa Arizona] |
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