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Posts Tagged ‘timer’

Big Timer

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...

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AVR timer-based one shot explained

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...

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Posted in AVR | No Comments »

ytimer, visual feedback timer

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...

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ytimer: Visual feedback timer

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...

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Posted in project logs | 5 Comments »

DIY automatic water timer

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...

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Long duration timer

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...

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Posted in project logs | 1 Comment »

Universal digital timer 4 – Proof of concept

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...

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Posted in MSP430 | No Comments »

Hacking OTP/eTokens

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...

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Posted in code, hacks, LCD | 1 Comment »

Universal digital timer based on MSP430

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...

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App note: Using the WeX timer/counter extension

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...

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Big 7-segment countdown timer

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...

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Posted in DIY, LEDs | 2 Comments »

0-99 minute timer

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...

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7400 competition entry: Beeping down counter

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...

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Posted in 7400 contest | 1 Comment »

7400 competition entry: TimeBonder 275

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...

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Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
  • Jerome: I need a new BusPirate for the Fablab ;) Many thanks!
  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
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