Electronic Engineering

Too Many QuadroCopter Mistakes – Maybe Rebuilding

Posted By Steven Johal on October 22nd, 2010

http://www.stevenjohal.com/too-many-quadrocopter-mistakes-maybe-rebuilding/

For the QuadroCopter, we could have easily built something that just flies, however we decided to go the harder route and build everything from complete scratch. Too many mistakes have been made, so now I think we’ll have to rebuild the whole thing. We’re still on the mainboard portion of the project.
Mistake 1 – Exothermic [...]

QuadroCopter Patience Test with Drilling and Reflow

Posted By Steven Johal on October 15th, 2010

http://www.stevenjohal.com/quadrocopter-patience-test-with-drilling-and-reflow/

We are making progress with the QuadroCopter. I had made the PCB yesterday, but tried to reflow the LGA chips (accelerometers, gyros, compass), but it didn’t work well. I tried to tin the LGA pads by doing a drag soldering technique, but it ended up pulling the pads off the board. Seemed a bit messy, [...]

How I made the QuadroCopter PCB (UV Method)

Posted By Steven Johal on October 13th, 2010

http://www.stevenjohal.com/how-to-make-pcb-uv-method-quadrocopter/

I finally made the PCB for the QuadroCopter drone me and my friend are making. Today I produced about 5 PCBs, 3 of which didn’t turn out. So in this tutorial I’ll go through what I did so if you’re Googling around and come here for tips, you’ll get to know what works and what [...]

Solving Problems by Learning to be Patient

Posted By Steven Johal on September 30th, 2010

I tried being patient for once, and discovered the benefits.
1. Being patient means your overall mindset will be more relaxed and your worries disappear if you slow down and take a chillaxative. After being patient for one whole day, I managed to sleep better. The sleep was so effective, I was able to wake up [...]

GPS testing with LCD Character Display

Posted By Steven Johal on July 25th, 2010

http://www.stevenjohal.com/gps-testing-with-lcd-character-display/

Its pretty easy testing out your GPS module if you have an LCD screen using your Arduino.

You can have the LCD output latitude, longitude, or whatever. You’ll need the TinyGPS library from Arduiniana downloaded and installed for it to work. They suggest using NewSoftSerial, but I couldn’t get that to work, so I scrapped that [...]

How to Read NMEA data from a GPS Module

Posted By Steven Johal on July 16th, 2010

http://www.stevenjohal.com/how-to-read-nmea-data-from-a-gps-module/

I was really eager to interface GPS data with the Arduino microcontroller. The possibilities are endless from Autopilot robots, precisely timed junk, whatever. Tackling it one step at a time, the first goal is to read NMEA data strings from the transmit (Tx) UART serial pin of a GPS module. While, I didn’t want to [...]

Arduino Duemilanove & ATMEGA328 Capabilities

Posted By Steven Johal on July 1st, 2010

http://www.stevenjohal.com/arduino_duemilanove_atmega328/

I picked myself up an Arduino Duemilanove development board. Its a small PCB made in Italy that has a socket for an Atmel Microcontroller, voltage regulator, and sockets for all the inputs and outputs. It has a few other features such as an ICSP header so that you can program a microcontroller while its in [...]

Replacing a Loud speaker in an iPhone 3G

Posted By Steven Johal on May 11th, 2010

http://www.stevenjohal.com/replacing-a-loud-speaker-in-an-iphone-3g/

Changing the iPhone 3G loudspeaker is a major pain! This speaker is the one opposite to the microphone with the charging port in between. Not to be confused with the handset speaker that’s normally used in telephone calls.
To change the speaker first you have to split the phone to pieces. You start by sticking a [...]

How to Properly Fix Water Damaged Electronics

Posted By Steven Johal on April 23rd, 2010

Right now, my Blackberry Bold 9000 after going through a hailstorm, is not working properly. I removed the battery right away and dried it out, however it still didn’t work properly. Initially the trackball had issues, and then I noticed very small salt residue at the trackball system’s output pins. So I drenched it in [...]

Lexar Memory Stick Pro Duo Lost Pictures

Posted By Steven Johal on March 23rd, 2010

http://www.stevenjohal.com/lexar_memory_stick_pro_duo_data_recovery/

The Issue
A little over a year back, I had over 200 pictures stored on Lexar Memory Stick Pro Duo 4GB (MagicGate) card. After a while the card stopped working. It gave an error C:13:01 on the Sony Cybershot I tried it on (Reinsert the Memory Stick). I even tried it on another camera and that [...]