Graphene Patterned at Room Temp
https://www.electronics-lab.com/graphene-patterned-room-temp/
by R. Colin Johnson @ eetimes.com LAKE WALES Fla.—Graphene is easily grown with chemical vapor deposition (CVD) on copper foil, but a simple way of etching out the necessary circuit patterns and transferring them to a non-metallic substrate has eluded engineers. Now researchers at the University of Illinois (Urbana-Champaign) claim to have a one-step room […]
T-baneklokke – A Coundown clock
https://www.electronics-lab.com/t-baneklokke-coundown-clock/
Joakim made a coundown clock for his wife and documented the whole process on his blog: The clock is built using an Arduino, and has a battery powered real time clock to remember the time while powered off. To make it truly stand alone I added the possibility to set the time and time-to-leave using buttons. The […]
DIY electronic RFID Door Lock with Battery Backup
https://www.electronics-lab.com/diy-electronic-rfid-door-lock-battery-backup/
Elmue build a RFID electronic door lock using PN532 Controller, Vehicle Battery and Teensy 3.2 board. The advantage of an electronic door lock is that the above security issues do not apply. It is much better to have a safe door lock which prevents that the thief can enter than to have an alarm system which […]
Reverse engineering the popular 555 timer chip (CMOS version)
https://www.electronics-lab.com/reverse-engineering-popular-555-timer-chip-cmos-version/
Ken Shirriff reverse engineer the CMOS version of 555 timer IC and explains how it works. This article explains how the LMC555 timer chip works, from the tiny transistors and resistors on the silicon chip, to the functional units such as comparators and current mirrors that make it work. The popular 555 timer integrated circuit […]
6 Digit Serial Display Driver with CAT4016
https://www.electronics-lab.com/6-digit-serial-display-driver-cat4016/
6 Digit serial display project has been designed around CAT4016 IC from ON semi. The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V […]
6 Digit Serial Display Driver with CAT4016
https://www.electronics-lab.com/project/6-digit-serial-display-driver-with-cat4016/
6 Digit serial display project has been designed around CAT4016 IC from ON semi. The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V […]
ACS730 – Hall-effect current sensor with 1MHz bandwidth
https://www.electronics-lab.com/acs730-hall-effect-current-sensor-with-1mhz-bandwidth/
Allegro MicroSystems has released its first ever 1MHz bandwidth Hall-effect current sensor IC, boasting a 210ns response time. The ACS730 provides an economical and precise solution for AC or DC current sensing and is aimed at industrial, commercial, and communications systems for motor control, load detection and management, switched-mode power supplies, and over-current fault protection. […]
Fluke/Philips PM66xx Frequency Counter OCXO Upgrade
https://www.electronics-lab.com/flukephilips-pm66xx-frequency-counter-ocxo-upgrade/
In this post Dan Watson documents an OCXO upgrade board he designed for the Fluke/Philips PM66xx line of frequency counters. A few months ago I purchased a Philips PM6674 frequency counter on eBay. It’s an older 9 digit counter with two channels that has a maximum input frequency of 550MHz. The design feels dated compared […]
Arduino IR remote and Software controller
https://www.electronics-lab.com/arduino-ir-remote-software-controller/
This is a DIY Infrared remote for speakers, replacing the original. Arduino Nano and controlled via a custom .NET application and placed in a laser cut enclosure. This one is an interesting one, it’s something we’ve been looking at for a while and figuring out how to solve it. We have sets of speakers and […]
ESP8266 Wifi controlled Home Automation
https://www.electronics-lab.com/esp8266-wifi-controlled-home-automation/
geekrex @ instructables.com shows us how to use ESP8266 Wifi module for home automation. He writes: ESP8266 is a great thing for starting to Wifi And IOT. It is also cheap and be used for making cool projects connected to the Internet .Learn how to make a simple IOT Project with it ESP8266 WLAN Module could be […]