BatDrive
Introduction: BatDrive
Hey everyone how's it going.
SO here's something super interesting and easy to make.
An SD Card Reader-themed after <PERSON> Logo from <PERSON>'s Batman.
I call this makeshift setup BATDrive because it's kind of like a Pendrive that looks like batman's throwing shurikens or whatever they are called. (BATRANG)
Imagine the scenario, <PERSON> is currently fighting some guys and he needs to stop this computer which will release some kind of cliche missile, he throws his BATDrive at the USB port and it gets connected with the bag guy's computer and uploads some kind of virus into their system and boom, he saves the day yet again.
Now instead of putting some kind of malware in this drive, I put a few stuff that I got from riddler's official website that you guys can check out, it's a site that WB set up just for the lulz.
My main goal for making this device was to prepare an awesome-looking SD Card reader that I will use daily with my 3D Printer.
I just got bored with the generic SD Card reader that I've been using for the past few years.
This Instructables is about how I made this BATDrive and how you can make your own version of this so let's get started!
Supplies
* Custom PCB
* cheap SD Card Reader
* SD Card SMD Holder or socket
* Solder paste
* copper wire for connection
* Solder wire
Step 1: SD CARD READER ANALOGY
For this project, I wanted to completely make a fully fleshed SD Card reader or memory card reader with generic ICs available in the market like GL827L for example.
Because of its availability, I was unable to get it so I improvise a little bit.
I took a normal 1$ SD Card reader and open it up which revealed a pretty straightforward circuit that consists of an SD Cardholder, one LED, and this Block Epoxy spot. 982
This Epoxy Spot is known as COB or Circuit On Board and it houses a single wafer that is connected directly to the PCB.
But why use this COB method. why not the whole IC?
Apparently, a wafer alone cost pretty less if compared with a complete IC with its semiconductor body so most companies buy wafer in bulk and produce their product with this COB Method.
This saves cost.
Anyways, I removed the SD Card Holder from the board, this made the SD Card circuit much more like a module.
Step 2: PCB DESIGN
To start this project, I first set up the batman logo in my OrCad setup.
I had to search for its black and white image and then convert it into BMP so my OrCad could import it as a PCB layer.
After importing the <PERSON> shape as a PCB outline, I then prepared the SD card Reader footprint so I could solder the circuit that I had salvaged from the commercial SD Card reader.
Step 3: SD CARD READER FOOTPRINT
From the main SD Card Circuit, I removed the SD card holder from it and it reveals some pads that connect the SD card to the silicon wafer which is inside the epoxy cover.
there are a total of 8 pads that connect to an SD Card in this manner.
* 1 to NC of SD card
* 2 to CS
* 3 to MOSI
* 4 to VDD
* 5 to CLOCK
* 6 to GND
* 7 to MISO
* 8 to NC
* See the attached image for details.
So the best option was to hand solder a few solid core wires with connector pin pads so I made a custom footprint that consists of a CON8 Pad on the SD CARD side and a CON4 Pad on the USB Side. I then added the custom footprint to the PCB Design.
Step 4: FOOTPRINT FOR SD CARDHOLDER
After making the custom footprint for the SD card circuit, I then prepared yet another footprint but this time it was of a generic SMD SD Card Holder that I got from a seller.
I followed the SD Card Holder's datasheet and prepared the footprint and then added it to the PCB Design.
I connected the SD Card Holder pins with the CON8 so the external SD card holder that I added gets paired with the SD Card Circuit.
Step 5: FOOTPRINT FOR USB PCB
Now, this was a tricky one.
I saw a few examples over the internet in which people just make the USB Pin pads on a PCB and then add solder to it which increases the board thickness and then it can get connected with any USB port. 611