Categories

Posts Tagged ‘mains’

PCB a Week 7: Mains log sensor

Monday, February 4th, 2013

Mats continues his challenge of designing one PCB every week. In week 7 he designed a voltage and frequency logger for household mains power supply. The device is designed around the ATtiny45 microcontroller which records the frequency and voltage, and passes measurements through an onto-coupler to an isolated logging board....

Tags: , ,
Posted in PCBs | No Comments »

Safe enclosures for solid state relays and mains current

Thursday, December 20th, 2012

Solid state relays can switch everyday mains-powered devices like lamps, but there's danger inherent in working with household AC voltage. Victor wrote a tutorial on how to enclose the SSR in an old laptop power supply case. It's simple to build, and it keeps you and your fingers safer than...

Tags: , ,
Posted in DIY | 2 Comments »

Recent Comments

  • T.O.: For $29 I can get 10 STM32F1 mini boards plus external debugger, free shipping. $0.99 would get me bare microcontroller if I need own board....
  • KH: However innocent it may be, I'm not impressed by the choice made by the creator of the image. Now, I'm not the most politically correct...
  • cyk: A simple google search for "free arm ide" lists CooCox on the first page: http://www.coocox.org/index.html Supports a ton of different ARM M0/3/4 micros and all...
  • Stennly: Despite the popularity of STM32s, it may not be the best place to start. As mentioned already, the Silicon Labs gecko family is cheap to...
  • Pete Juliano: Since this posting on my blog I have received an excellent suggestion on how to quickly disconnect the 48 VDC from the amp so you...