Friday, August 31st, 2018
Peter Scargill has a nice write-up about a powerful timing node for Node-Red, the Big timer: Big Timer is (probably) the best-ever timing node for Node-Red, providing a general purpose timer as well as handling summer/winter correctly as well as (importantly) lighting up time (for which you should provide longitude...Tags: node, Node-RED, timer
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Monday, March 23rd, 2015
Josh writes: Last time, we made one-shot pulses using the AVR’s built in hardware timer module. Today we are going to dive deep into the datasheets to see how this technique is able to coax the normally free-running timer into generating a single pulse. Along the way, we will learn...Tags: AVR, PWM, timer
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Thursday, September 4th, 2014
Here's Aon's finished project the ytimer a visual feedback timer. We wrote about it previously: A countdown timer with super bright 7-segment displays that flash when the time is up, instead (or in addition to) an audible alarm. The design is based on a PIC16F886 microcontroller which drives the displays using a...Tags: PIC16F886, timer, TLC5916
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Saturday, August 16th, 2014
Here's an update on Aon's boards from DirtyPCBs we covered earlier, a visual feedback timer project: Here's what became of one of the boards after a bit of soldering and programming: a countdown timer with visual indication of when the time's up instead of an alarm (there's a place for...Tags: DIY, timer
Posted in project logs | 5 Comments »
Wednesday, August 6th, 2014
Kyle wrote an article detailing his DIY automatic water timer: Now that I have power and output figured out, I need to work on the control aspect. 555 timers are great for simple applications requiring up to a few minutes of delay. At 10 minutes, the RC values needed would boarder the danger zone...Tags: 555, ATtiny, timer
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Thursday, June 26th, 2014
Rajkumar Sharma over at Electronics Lab writes: This timer project can be used to switch ON/OFF any device after a set time, this circuit can be used in lots of application like switched ON/OFF Radio, TV, Fan, Pump, kitchen timer, the circuit describe here its unique in its own. Project has...Tags: CD4001, CD4020, timer
Posted in project logs | 1 Comment »
Tuesday, February 11th, 2014
[embed]http://www.youtube.com/watch?v=z7cy9N-i4Ts[/embed] Zoltán Gömöri writes: I started the development of the counter. First of all I should proof if I can create a display/button matrix which can handle the two display digit and the two pushbuttons. I picked the double multiplex display a fist of diodes and pushbuttons and a launchpad. Here...Tags: timer
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Tuesday, October 15th, 2013
Dmitry had a OTP/eToken in his gadget collection which he no longer needed. He decided to crack open the device to see what was inside and shares his findings in this blog post. He found a Microchip PIC16F913 and ICSP connect points, which allowed him to reprogram the device into...Tags: OTP/eToken, PIC16F913, timer
Posted in code, hacks, LCD | 1 Comment »
Friday, June 14th, 2013
SUF shared his new project the universal digital timer based on MSP430 in the project log forum: I have an oven and a deep fryer at home. Both has the same type of digital timer in it. The timer has a two digit 7 segment display and two buttons with...Tags: MSP430, timer
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Sunday, May 12th, 2013
Here’s an application note from Atmel: Using the WeX timer/counter extension (PDF!) This application note describes the various functions of the Waveform Extension (WeX) to Timer/Counter 4/5 available on the Atmel® XMEGA® E. It details the differences and improvements according to the AWeX extension to Timer/Counters of the previous XMEGA...Tags: atmel, timer, Waveform Extension
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Monday, March 25th, 2013
Paul over at Dorkbotpdx has written an article about his 7-segment countdown timer: The main challenge was driving the LEDs with a constant current, because they need about 10.5 volts across the several series LEDs. I wanted to run from 12 volts, so there wasn't much voltage left over for...Tags: 7-segment, timer
Posted in DIY, LEDs | 2 Comments »
Thursday, December 1st, 2011
Raj decided to make a tutorial on how to implement a 0-99 minute timer on a PIC16F628A microcontroller. His design uses a HD44780 compatible 2x16 text LCD, to setup and display the count-down timer. One pin of the PIC should be used to drive a relay, but for testing purposes...Tags: hd44780, PIC16F628A, timer
Posted in how-to, project logs | No Comments »
Friday, October 21st, 2011
Chris decided to enter another project into the Open 7400 Logic Competition. The beeping down counter, as it's name suggests, is a pre-settable timer which beeps and uses a display to show the seconds left on the timer. The goal of this project is to duplicate the down counting circuit...Tags: 7400 competition entry, timer
Posted in 7400 contest | 1 Comment »
Friday, October 21st, 2011
Sigitronic built the TimeBonder 275 and entered it into the Open 7400 Logic Competition. It is a versatile timer that uses the mains frequency as the clock signal, both 50Hz and 60Hz are supported. It can time events ranging from 100ms to 99.9s with a resolution of 100ms, or up...Tags: 7400 competition entry, timer
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