Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by emavil

  1. E

    Communicating to other uC at a distance of 100m or more

    thanks to all who responded. I am not familiar with RS485, currently i'm using buffer ICs like 74LS244 at the transmitter module and another 74LS244 at the receiver module. I am transmitting digital singals at TTL levels for SPI (Strobe, Data, Clock) using ordinary telephone cord. One line of...
  2. E

    Communicating to other uC at a distance of 100m or more

    Hi guys, I am working with two microcontroller projects that communicates using SPI wherein both of them are 100meters apart. Is there any least possible electronic solution to this?
  3. E

    Personalized PCB manufacturing

    hi guys I have a problem regarding the production of pcbs in volume, let's say 15 pcs. I tried Photosensitized PCBs but very expensive for a large number of pcbs the least i tried was the Silk screen printing process. It's cheaper. I went to a friend who is good in silk screen printing for...
  4. E

    Bipolar transistor vs. MOSFETs

    transistor vs mosfet I saw RGB LED circuit of some MICROCONTROLLER guys that displays colors of the rainbow (PWM) that uses MOSFET instead of a driver transistor. I observed that as time goes, the regulator (7805) is still cool. I also constructed my own version of RGB lighting, the only...
  5. E

    Saving variable content to EEPROM before power is cut-off

    avr save date before power loss anybody who has an idea on how to save variable value to EEPROM before power is lost? I'm using PIC16F628A with internal RC osc enabled.
  6. E

    Power-on Delay with PIC Microcontroller

    Thanks for the mains_supply_failure_alarm
  7. E

    Regulated power supply

    Re: Regulated power supply - to find inductance thanks gamana
  8. E

    big 7-segment displays for scoreboards

    do you have any schematic on how to wire those LEDs? How about the mathematics behind on how to determine to size of big 7-segments with respect to viewing distance?
  9. E

    Cheap and easy way of Making a PCB

    thanks for that pal. I'm curious about the paper that you are using. Is it a normal bond paper or something like glossy (HP)? One more thing, after laying down the paper with layout, do i have to treat the paper with alcohol before ironing?
  10. E

    Reading Compact Flash Memory

    hi pal, thanks for that. Could you pls share some tech. info regarding the interfacing of flash drives to microcontroller including the fundamental background on how to read .wav files in raw format.
  11. E

    Switching Power Supply (up to 4A +12v & +5v DC)

    thanks Ianp for that Aside from that, I'm looking for a switching power supply circuit that can be incorporated to any hobby projects. This speaks for size. I have one dead dvd player and its power supply is good enough for enclosures 1" to 1.5" in height. Any suggestion on how to construct...
  12. E

    Switching Power Supply (up to 4A +12v & +5v DC)

    anybody who knows how to construct a simple, low cost, effecient switching power supply good enough as bench power supply for hobby projects.
  13. E

    Reading Compact Flash Memory

    Anybody who has an idea on how to play any digital recorded audio (.WAV / MIDI) from any device like flash drive or compact flash device? PIC Micro will read a particular addressed audio file for playback. The design is for a simple security system that instead of turning an alarm, PIC will...
  14. E

    Cheap and easy way of Making a PCB

    thanks a lot pal, the reading material was very good.
  15. E

    Distance limitation of Logic ICs / devices

    Sorry kral, my emavil add is emavilengr@gmail.com thanks Added after 2 minutes: Thanks a lot lambtron, that was a excellent suggestion in terms of safety and effecieny.
See more

Part and Inventory Search

Back
Top