Finding the right transistor.
Hi, I've recently became interested in some electronic projects. I've decided to make a fan controller as my first project (bought an arduino kit). Alas, the arduino only supplies me 5V and I need 12V...
View ArticleVCNL4000 ambient light sensor & distance sensor breakout
submitted by jtl3 [link] [1 comment]
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Got Rubidium? (Setting up and testing Rubidium atomic oscillators)
submitted by FlyByPC [link] [7 comments]
View ArticleA slow but large (11 devices) SPI bus
Hello all, I'm designing a system which requires me to include about 11 components on the SPI bus. 3 of these components will be on the same (main board) PCB while the rest will be on 4 different PCBs,...
View ArticleInstrumentation amplifier oscillation issue
Why do I get a square wave from the output of this in amp (measuring EMG). It's an AD627 and this is my first attempt at analog electronics. There are so many parameters in the datasheet. If someone...
View ArticleN00b question about PIC12F629 timers, anyone got timer1 example code?
So I'm building a replacement circuit for an electromechanical shutter on an old camera. I have it working for short duration shutter speeds (1/256th - 1sec) but would like to be able to use the camera...
View Articlehelp the noob how to chose LED driver for LED cube
I am very new to electronics. For my project I wanted to make something that is both challenging and fun, and I decided on LED cube. My question is how to pick the right LED driver? My problem is that...
View ArticleOnline Linear Control Systems Courses/Study Guides?
Hi guys, I just graduated with a B.S. in Electrical Engineering and am in my first semester of grad school. One of the coures is really interesting to me but due to the nature of the professor's...
View ArticleQuestions on an RC project using ARM.
I'm planning on making a quadcopter. I'm planning on having an accelerometer, tilt sensor and altimeter so I can play around with doing some sort of autopilot in addition to manual control. I'm fairly...
View ArticleDSO Nano v2 : AC Mode?
I bought a DSO Nano v2 oscilloscope not too long ago, and I just learned how to use it (the basics) this weekend by watching the output signal in a simple 555 timer circuit I built. My neighbor is an...
View ArticleLooking for a place to buy components with paypal
Like the title says, I need to buy some components, but I can only use paypal to pay for them. I would love to use digikey, but they only take credit cards... Where is a reputable and cheap place to...
View ArticleWhat Op-Amps should I get?
Can anyone give me a list of op-amps to play with, about to make another order from taydaelectronics.com and i want to pick some up but i don't know which ones to get. submitted by psywiped [link] [16...
View ArticleControlling airflow using Arduino
I would like to control airflow using my arduino in my design project. Basically, it's a construction inflating balloons. I have an unused airpump laying around from a previous project so I was...
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Help with cleaning and fixing water damaged Droid Bionic (pics of...
submitted by okaylol [link] [9 comments]
View ArticleCapacitor Sizing Question
Hello, I'm working on a small project for fun and would like some help determining the size of a capacitor I should use. In my car I have an amateur radio transceiver that is wired directly to the car...
View ArticleHow do I decide what the "best" supply rail voltage for an NE5535 op-amp?
I'm designing the front-end for a digital preamp. I'm really trying to put together a high quality unit, so I want to understand how I should select my supply rails for the input op-amps. The most...
View ArticleUses for micro SD cards?
I recently got two 8GB micro SD cards, and I'm itching to do something cool with them. What are some awesome uses for micro SD cards? submitted by scottywatty [link] [10 comments]
View ArticleNeed help programming AVR with AVRISP MKII
So I just got everything together to program an AVR and I found this tutorial which shows how to build the initial circuit to allow for programming using an AVRISP MKII. This is the link. The tutorial...
View ArticleBirthday Present Ideas?
So, yeah. I have a friend's birthday coming up in two weeks, and I would love to create something electronic-based as a present. However, i'm currently out of ideas - so any would be great! I've...
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