 Wigman27 on the EEVblog has built a great looking Dummy Load. The nice and bright 4 line LCD display shows us voltage, current, resistance and power. This gives some great detail at a glance. The large lugs on the front and simple adjustment knob interface make this a great addition to your bench. The thread is interesting, he discusses the circuit design and shows some nice pictures of
If you are into cool clocks have a look at this Voltmeter Clock Project. It is based on the version that I built but has been enhanced with a ton of features such as master clock sync. “I have used three voltmeters and mounted them on a wooden plinth with a clear Perspex cover to give the clock an industrial look. I have modified Alan’s code to run on
This neat µVolume project by Rupert Hirst of RunAwayBrainz allows you to control your tunes with a nice big knob that uses a rotary encoder to get the user input. You can see the previous version in action below. Via: Electronics Lab “Features:              Arduino Compatible (Atmel Atmega32u4)              Manual volume adjustment using the rotary encoder              (IR) Infra red remote control of volume and multimedia controls.              Apple
 Cornell ECE 5030 students Uma Mohan, Sarvesh Sukhatme and Priyanka Venkatesh have designed a Portable Device for Measuring Hydration and Body Fat. The project passes a small current through the body to measure the amount of hydration in the person. A 940 nm LED is used to detect the amount of fat the person has by shining it through a part of the body, the amount of light
If you are trying to troubleshoot a PCB you probably don’t have the schematic and can just guess where PCB traces go, if you try to follow them manually it can be tedious as you follow vias from one side of the board to the other just to loose the trace under a chip. Sure you can probe around to try to find where the trace goes but with
 Yesterday we looked at an entry level DIY thermostat project. If you want to go all in with processing power and features have a look at the Open Source Android Thermostat Project. It is based around the IOIO-OTG and uses the TMP36 temperature sensor. A small custom PCB is used to hold the handful of components that make the control side of things work and you simply connect up
If your thermostat just stopped working you could go to the store and purchase a new one but why not make your own. You can add any feature you like, want to control it from your smart phone? Add an ethernet module and go for it. Want to add schedules? Add a RTC and you can program timed temperature settings to your hearts content. Want to make sure the
