Thursday, November 30, 2017

Makeshift Laptop: The Prequel

I just received what I had thought to be all the parts I needed for this small laptop I wanted to make using the Raspberry Pi, but the screen I got is not compatible with the 40 pin tft to hdmi converter from Adafruit (TFP401) as one component on the board was burning hot to the touch. I have now ordered a 7" tft screen from Adafruit, which is sure to work with the chip, and I can begin construction of the laptop.

Quick list of parts I originally planned on using:

  1. Raspberry Pi 3 Model B (for its built in wi-fi and bluetooth)
  2. Adafruit TFP401 converter
  3. Rii Mini X1 bluetooth keyboard and mouse (all on same board)
  4. Anker Astro E1 5200 maH portable charger (power source)
  5. 10.1" Laptop Screen Part # LED-1024-600-G-40-10.1-8
While I wait on the new screen to come in, I am setting up a new micro SD card for the laptop and doing the necessary changes to some files so that I can connect the Pi to my school's "eduroam" wi-fi network.

Credit to user "Sruc" on this thread who posted the solution to connecting to eduroam.

Bit of an aside, but I remember encountering this problem sometime during the latter half of freshman year and searching for this solution in the past. However, I've been not so diligent in trying to keep up making some sort of project every semester that most of my Raspberry Pi skills are quite rusty. Maybe I'll open up my notebook from my engineering programming class from that time for a refresher.


Tuesday, November 28, 2017

November 2017 Update: The return that will hopefully work

Whew 4 months sure pass by quickly. As an update, my Summer was very unproductive, but I did manage to get myself a soldering kit which was pretty cool. I kept myself busy by going to the dollar store, finding cheap electronics and try to dissect the circuits inside them. There was this simple PCB I found in a $2 lawn lamp. It had a solar panel to charge a small battery of some sort. It also had a on/off switch if you wanted to enable the functionality of the lamp; turn off the LED during daytime and charge the battery, and then turn on the LED at nighttime. 

Long story short, I couldn't figure out the circuit diagram for it because there was a black epoxy covering what I suspect to be some sort of transistor (a component I had not been taught about before).

I also found a cheap light that would turn on if it detected motion. I only took it apart once and quickly scanned its components. If I recall correctly, the circuit used some sort of photo resistor to detect motion. 

Apart from these small electronics, did not really do too much. Now, I'm almost done the first semester of my Junior year and have a great deal of projects I want to do, or at the very least attempt.

A tentative list of such projects in no particular order:
  • Albert's Gift (fix 3D printed enclosure)
  • Arcade Box (Redo laser cut wooden enclosure into something that works)
  • Makeshift Raspberry Pi (I ordered a laptop screen and various parts to make a cardboard laptop out of and hopefully I can laser cut/3D print a good enclosure)
  • Amazon Echo Stuff / IoT
  • The various Adaboxes to do
Hopefully I can knock at least 3 of these before the school year ends next May. I got big dreams, but only by actually doing something can they come to fruition. Let's also hope I stick to this work ethic.