1. BerserkSin

    Help Needed- Digital Clock using ICs cd4060 and cd4026

    I found a blog that shows how to build a digital clock using ICs cd4060 and cd4026. https://danyk.cz/hodiny_en.html This is the site. I have checked if my ICs are working and they are. The only output I'm getting is the every 7 segment display shows 0 and the the two decimal points blink every...
  2. K

    Clock edge detector using capacitor and resistor problem

    I have watched recently this video: At the end of it he describe a way to make edge detector by using capacitor and resistor. The thing is i don't see it being discharged in any way. Would't it make it impossible to charge again and in consequence make current flow through the resistor and make...
  3. M

    Slew Rate/Rise Time Conversion

    I just wanted to confirm that my oscillator will drive my circuit correctly. I am focused on rise time vs slew rate in this calculation. The receiver which runs off 1.8V has a slew rate of 1V/ns which is measured from .35(1.8V) to .65(1.8V). The clock driver has a rise and fall time spec of...
  4. E

    Simplest way to generate 2ch clock 180 degree phase shift with 40% duty cycle 500kHz

    As the title describe. What do you think is the simplest way to generate 2ch clock 180 degree phase shift with 40% duty cycle and 500kHz frequency without any mcu/serial config input? Using two 555 cmos timers seems not like to optimal solution.
  5. A

    Stumped on what to do on my digital clock project.

    Hey everyone, I recently enrolled in a computer science major, and one of the subjects has to do with circuits, memory, the cpu, logic gates etc. The problem is, I have absolutely 0 experience on such things, and now with covid and learning from home I haven't really grasped much of my...
  6. 8

    BNO085 - Bringup

    Hello, I tried to breakout the BNO085. I used a known good design from Adafruit (attached the schematic). Now unfortunately it doesn't work. I written software for the Adafruit board and it works fine. Then I replaced the Adafruit board with my breakout board ("schematic_not working" in the...
  7. Stavros Avramidis (asder)

    USB Reclocker with a USB3503

    Hello, I want (/try) to make a usb "reclocker" with a microchip USB3503 (https://www.microchip.com/wwwproducts/en/USB3503). I tried to copy their reference design a bit. I have some questions. 1. If the design seems fine ? 2. I suppose there won't be a serious ground loop if I use a floating...
  8. M

    Increase clock frequency

    Hi, I’m working on a logisim project for university. I need to increase the clock frequency to 16 Hz, but the frequency must be set in the options to 1 Hz. How can I increase the frequency using only a circuit? Thanks for the help.
  9. M

    Logisim - clock

    Hi, I’m working on a logisim project for university. I need to increase the clock frequency to 8/16 Hz, but the frequency must be set in the options to 1 Hz. How can I increase the frequency using only a circuit? Thanks for the help.
  10. M

    Clocking a HI7190 ΣΔADC using a 10MHz Quartz Crystal Oscillator

    Hello, This is my first post so I'm sorry ahead of time if I'm missing key information. I am trying to produce a clock signal for a HI7190 (ΣΔADC) using a 10MHz quartz crystal oscillator. The HI7190 uses either 2-Wire or 3-Wire (SPI-compatible) communication for reading and writing internal...
  11. Gilsdank

    How to introduce 90 degree phase shift to 555 timer?

    hello, I need to generate 2 signals: a square wave of a pretty low frequency, say 10hz. Right now I'm using a 555 timer to generate the square wave. I also need another square wave 90 degrees out of phase. How can I do this? I've attached a picture of the signals I need. Thank you in advance.
  12. A

    Digital Clock using 74LS192

    Hi people I would like to make a digital clock with HOURS and MINS using 74LS192 IC. Below attached is my schematic diagram for the connection of the circuit. However, the MINS counter keeps counting from 00-59 and resets and does not increase the HOURS counter after each 60mins. Components...
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