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Most microcontroller platforms implement a watchdog timer that resets the controller if it detects a freeze. It does that by checking to see if the code has yielded. On some, a delay() that exceeds the watchdog timer's limits will initiate a reset.
This "safe" delay yields to the stack every tick to create a "blocking" delay in user code; however, internal functions like the watchdog timer are not blocked. It optionally prints a dot every second.
Issue: You are travelling and all oyu have access to is that crappy sort of Internet which requires you to hit a network login page via your laptop's web browser. You want to connect some other devices, maybe some IoT devices so you can keep up with your projects. No way to do that since they don't have a web browser. Or maybe you have access to some pay-as-you-go Internet but it only allows one device?
Solution: A Raspberry Pi Zero W (or any Pi with a WiFi).
Overview:
Originally posted here.
I have the screen purchased here. I am using Raspbian Buster dated 09-26 and have had no issues. I followed these instructions which were on the Amazon item page:
sudo rm -rf LCD-show
git clone https://github.com/goodtft/LCD-show.git
chmod -R 755 LCD-show
cd LCD-show/
sudo ./MHS35-show
Source: https://www.leowkahman.com/2016/03/19/disable-ipv6-raspberry-raspbian/
Firstly, check for presence of IPv6 using ifconfig. You should be seeing a few lines containing inet6 addr: ....
To disable, edit a file: sudo nano /etc/sysctl.conf
Add the following line:
net.ipv6.conf.all.disable_ipv6 = 1
