tech. blog. repeat.
It is possible to burn an Arduino bootloader with nothing more than a computer and parallel port cable. Finding a system with a parallel port is the hard part. Anything newer than a Core 2 Duo will be hit or miss for legacy ports — so a pre-2010 computer is a good place to start….
This process uses a modified version of the official Raspberry Pi OS (2020-02-13-raspbian-buster-lite.img). It has been configured with the tools necessary to burn an Arduino style bootloader using the Raspberry Pi’s GPIO pins (described here). Brief summary of steps: Wire Raspberry Pi GPIO pins to Arduino ICSP pins Boot the custom Raspberry Pi image Connect a…
If you have an e-commerce website, you can validate shipping addresses on the front end to reduce delays and minimize costly returns due to bad addresses. Going further, you can also script and automate address validation for batch imports into UPS Worldship. This process will only apply to addresses in the United States, since UPS…
I work with stepper motors a lot. My projects typically include multiple motors running off of a single microcontroller. Everything is great when you’re running all of them at the same speed. But what if you need each motor to run at a different speed? at a different time? or you need to do something…
The method described in this article, ‘DoDirectPayment,’ is depricated. It will work for existing users, but no new users are allowed. Important: PayPal isn’t accepting new users for this feature, and we require existing users to upgrade to our Advanced Debit and Credit solution that supports EMV 3DS (3DS 2.0) for PSD2. Our Advanced Debit…
I’ve long been a user of PDF::API2, a module available for Perl. I use it everyday at work and along with a few other modules, it has made Perl an invaluable tool for me. Being able to generate PDF’s for reports and documents allow for a bevy of automation shortcuts where traditional Data Merging, or…