NanoHat OLED with YouTube stats

Resources friendly NanoHat OLED and GPIO Button Control for Armbian.

Thank You

I used a lot of others people code/work. I hope the following list covers them all:

• https://github.com/crouchingtigerhiddenadam/nano-hat-oled-armbian
• https://github.com/Digilent/linux-userspace-examples
• https://github.com/OnionIoT/i2c-exp-driver
• https://github.com/Narukara/SSD1306
• https://android.googlesource.com/kernel/common/+/refs/heads/upstream-master/tools/gpio
• https://www.asciiart.eu

Getting Started

Prerequisites

Enable i2c0:

sudo nano /boot/armbianEnv.txt

Add i2c0 to the overlays= line, for example if the line appears as follows:

overlays=usbhost1 usbhost2

Then add i2c0 with a space seperating it from the other values:

overlays=i2c0 usbhost1 usbhost2

Save these changes by pressing ctrl+x, ctrl+y and enter as prompted at the bottom of the screen.

Reboot the system for the changes to take effect:

sudo reboot now

Dependencies

Install the dependencies from APT:

sudo apt -y install \
  gcc \
  git \
  libssl-dev

Get the Code

Clone from Github:

cd /tmp
git clone https://github.com/platsek/nanohat-oled.git
cd nanohat-oled/src

Compile

Edit yt.c

nano yt.c

Then go to the line 79 and change/add your YT channel id and Google API key:

"GET https://youtube.googleapis.com/youtube/v3/channels?part=statistics&id=<channel id>&key=<API key> HTTP/1.1\r\n\r\nAccept: application/json\r\n";

If you don't know what Google API key and YT channel id are, read this:

https://hackernoon.com/how-to-fetch-statistics-from-youtube-api-using-python

Save the changes by pressing ctrl+x, ctrl+y and enter as prompted at the bottom of the screen.

Compile the code:

gcc -o oled-app main.c i2c.c gpio.c oled.c font.c yt.c -lssl

Install

Make the program directory:

sudo mkdir /etc/share/nanohatoled

Copy the program file:

sudo mv /tmp/nanohat-oled/oled-app /usr/share/nanohatoled/

Edit rc.local:

sudo nano /etc/rc.local

Then find the line:

exit 0

And add /usr/bin/nice -n 10 /usr/share/nanohatoled/oled-app & before exit 0 so the lines look like this:

/usr/bin/nice -n 10 /usr/share/nanohatoled/oled-app &
exit 0

Save the changes by pressing ctrl+x, ctrl+y and enter as prompted at the bottom of the screen.

Reboot the system for the changes to take effect:

sudo reboot now

Troubleshooting

Compatibility with BakeBit and NanoHatOLED

This does not require the FriendlyElec BakeBit or NanoHatOLED software to be installed. If this has already been installed you will need to disable it.

sudo nano /etc/rc.local

Then find the lines:

/usr/local/bin/oled-start
exit 0

And comment out the oled-start line by adding # at the start of the line, so the lines look like this:

# /usr/local/bin/oled-start
exit 0

Save these changes by pressing ctrl+x, ctrl+y and enter as prompted at the bottom of the screen.

Reboot the system for the changes to take effect.

sudo reboot now