Posts Tagged ‘switch’

App note: Building a battery operated auto ranging DVM with the ICL7106

Saturday, February 14th, 2015

Intersil's application note (PDF!) on building a battery operated auto ranging DVM with the ICL7106: This application note describes a technique for auto-ranging a battery operated DVM suitable for panel meter applications. Also, circuit ideas will be presented for conductance and resistance measurement, 9V battery and 5V supply operations, and current measurement.

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Posted in app notes | 9 Comments »

Sound activated switch

Friday, July 25th, 2014

A sound activated switch project by Rajkumar Sharma of Electronics Lab: Clap switch/Sound-activated switch designed around op-amp, flip-flop and popular 555 IC. Switch avoids false triggering by using 2-clap sound. Clapping sound is received by a microphone, the microphone changes the sound wave to electrical wave which is further amplified...

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Posted in DIY, sensors | No Comments »

Push button toggle switch, old style

Monday, May 5th, 2014

Bertho of Vagrearg writes: I recently answered a question about how a specific circuit worked and I was so intrigued that I just needed to write down my findings and share it. The circuit uses a single (cheap) push-button to make the output toggle with debouncing and no-delay switching. The circuit...

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Posted in how-to | No Comments »

12mm Rotary Encoder breakout

Monday, December 23rd, 2013

Tom designed this simple 12mm Rotary Encoder breakout, that is available at Github:  Very simple breakout board without so much as pullup resistors, just breaking out all 5 pins to a pin header. The PCB features enlarged holes to fit generic encoders. Via the project log forum.

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Posted in project logs | No Comments »

Twin triac AC switches on DP5050

Monday, November 25th, 2013

T0m designed a Twin Triac AC switch on DP5050 PCB: Double SSR for TO-220 package triacs and MOC* series optocoupled drivers. The schematic is based on a design by RobG posted to the 43oh forum. Via the forum.

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Posted in project logs | 2 Comments »

Multi-processor test board for open source USB stack development

Tuesday, December 25th, 2012

An open source USB stack for PIC microcontrollers has evolved in the forum over the last year. It supports a number of USB-enabled PICs, and a good developer would test each chip before each release. We've been crowd sourcing that testing in the forum, but now prolific forum member Mats...

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Posted in project logs, USB | No Comments »

DIY foot operated switch

Wednesday, September 5th, 2012

This clear foot operated switch is made with a bent piece of acrylic, and a PCB with a tactile switch and mounting holes: This time,i made a lighter version, very simple to make, still with a nice operating feel. I don't really remember where i saw this design, i think...

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Posted in DIY | 3 Comments »

Connect multiple tact switches to a single microcontroller pin

Monday, January 2nd, 2012

How to get input from multiple tact switches with a single input pin: A technique of interfacing multiple tact switches using a single ADC input pin was demonstrated using the PIC12F683 microcontroller. A digital input from four tact switches were individually read through the AN0 ADC channel and displayed it...

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Posted in how-to | 8 Comments »

Introduction to switches

Tuesday, June 28th, 2011

[embed][/embed] Make has an introduction to various switches: Easily overlooked, but elemental to electronics hardware, the manually operated switch is the simplest of electromechanical devices — and likely the most familiar. While the most basic switch is… well, quite basic, there’s a crazy-huge variety of switch types and sizes available...

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Posted in tools | No Comments »

Recent Comments

  • readybrek: Anyone got a any recommendations for a budget-priced hot air station?
  • William: lol I'm happy to waste 3c for each program/debug cycle... but probably not the time spent soldering a new device down to a proto board!...
  • 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...