Skip to content

Juvar's Electronics Corner

All kinds of electronics

  • Disclaimers
Juvar's Electronics Corner

Month: November 2019

LED clock with CMOS logic

LED clock with CMOS logic

This clock uses only CMOS logic IC’s. No programming needed. Wide power supply range 3-15 volts. 24 hour display. Hours and minutes can be set independently with buttons.

Circuit diagram. Note that with 470 ohm LED current limiting resistors suitable voltage is 5-6 volts.

Video https://youtu.be/sFB7KNyGU3Y

Author adminPosted on November 3, 2019Categories Uncategorized

Recent Posts

  • Simple astable multivibrator with relay July 11, 2020
  • Simple analog sequencer and synthesizer May 2, 2020
  • Setting up LoRa-GPS Tracker December 10, 2019
  • LED clock with CMOS logic November 3, 2019
  • LoRaWAN GPS Tracker October 25, 2019
  • Welcome to Juvar.fi! October 11, 2019
  • RF Power Meter V1.1 June 14, 2019
  • RF Power Meter June 8, 2019
  • Battery level indicator June 3, 2019
  • DMX512 Streaming Recorder & RDM Interface – A Concept February 22, 2019
  • AVR/Arduino RFID Reader November 28, 2018
  • Simple Arduino RFID reader November 25, 2018
  • OpenDMX Compatible Unbuffered USB-DMX Interface (part 2) September 26, 2018
  • Dual DC motor controller with Arduino (part 2) June 18, 2018
  • Python APRS Terminal May 5, 2018
  • UART-controlled 7-segment display with Python GUI April 29, 2018
  • Reading UART with Python GUI application April 28, 2018
  • Dual DC motor controller with Arduino April 22, 2018
  • 8 Channel IoT Triac Controller February 4, 2018
  • Cathode Ray Tube (CRT) Display January 20, 2018

Archives

  • July 2020
  • May 2020
  • December 2019
  • November 2019
  • October 2019
  • June 2019
  • February 2019
  • November 2018
  • September 2018
  • June 2018
  • May 2018
  • April 2018
  • February 2018
  • January 2018
  • December 2017
  • October 2017
  • August 2017
  • July 2017
  • June 2017
  • May 2017
  • April 2017
  • March 2017

Tags

  • 1-wire
  • 6LO1i
  • 7-segment
  • 4054
  • 4056
  • AD8307
  • APRS
  • arduino
  • AT
  • AtMega2560
  • AVR
  • building kit
  • DAC
  • Dire Wolf
  • display
  • display system
  • DMX
  • DS18B20
  • ds12887
  • ENC28J60
  • FT232R
  • GPS
  • GUI
  • H-bridge
  • ILI9340
  • large VU-meter
  • lcd
  • LM324
  • LM3915
  • logic analyzer
  • LoRaWAN
  • motherboard
  • pcf8563
  • PCM8544
  • pwm
  • python
  • R-2R
  • Raspberry Pi
  • reader
  • RFID
  • rtc
  • RTC Replacement
  • SD card
  • SPI
  • VU-meter

Meta

  • Log in
  • Entries RSS
  • Comments RSS
  • WordPress.org
  • Disclaimers
Juvar's Electronics Corner Proudly powered by WordPress