A few weeks ago I thought I’d try to install Node.js on my Raspberry Pi Zero W to use it as a simple API server that I could take with me on the road. I have installed Node.js so many times before, including on a standard Raspberry Pi, that I figured it would be just as easy to do on the Pi Zero.
I was mistaken in regards to the difficulty.
On the Raspberry Pi Zero W, Node.js was nowhere to be found in apt-get
and the scripts that used NodeSource in the official install documentation didn’t work because ARMv6l is no longer supported by NodeSource.
We’re going to see how to install Node.js on a Raspberry Pi Zero W when everything else fails.
Read MoreI don’t typically write about these topics since they aren’t on the subject of development and operations, but this week Google AdSense put my account on restricted probation for violating its policies, something I hadn’t intentionally planned on doing.
After receiving an email from Google and visiting the policy area of the Google AdSense dashboard, I learned that I had a Valuable Inventory: No Content violation for a domain that wasn’t mine and I hadn’t even heard of.
So what do you do when you’re in violation for something you do and don’t have control over?
We’re going to see some of the things that you can do to keep your account in good standing, beyond the obvious things such as being annoying.
Read MoreAs you’re probably well aware from my previous Raspberry Pi articles, I’m a hoarder. I have several Raspberry Pi Zero as well as the wireless edition and various attachments that go with them.
When I was first getting started with the original Pi Zero, I had a tough time trying to figure out how to connect to it. I mean, how do you connect to something that doesn’t have some kind of internet connect?
I had written two articles previously for connecting to a Raspberry Pi Zero. The first titled, Connect to a Raspberry Pi Zero with a USB Cable and SSH, demonstrated how to connect with nothing more than a USB cable. The second titled, Connect to a Raspberry Pi and Pi Zero with a USB to TTL Serial Cable, demonstrated using GPIO pins and a serial cable to connect.
We’re going to simplify the connection process by using a nifty PiUART module and eliminate any complicated wiring or software configurations.
Read MoreOver the past month or so I’ve demonstrated how to generate address information for a variety of cryptocurrency Altcoins using technologies like Node.js, Vue.js, and Angular. The thing about my previous tutorials are that they all used the JavaScript stack in some sense. What if we wanted to adventure into other technologies like Golang?
The process for generating key and address information for Bitcoin and popular Altcoins is pretty much the same. In reality, the difference is defined by the private key and public key prefix information, typically associated to a network.
We’re going to see how to generate and import private keys for a variety of cryptocurrency coins as well as their addresses using the Go programming language.
Read MoreI am pleased to announce that the latest episode of The Polyglot Developer Podcast is now available for download. The episode titled, Going FaaS on Serverless with OpenWhisk focuses on the development and deployment of functions to be deployed on a serverless cloud platform.
In this episode I’m joined by Carlos Santana who is part of the Cloud Functions team at IBM. While Apache OpenWhisk will have an emphasis in this episode, other cloud services are mentioned as well, including AWS Lambda and Azure Functions.
Read MoreBeing able to encrypt and decrypt data within an application is very useful for a lot of circumstances. Let’s not confuse encryption and decryption with hashing like that found in a bcrypt library, where a hash is only meant to transform data in one direction.
Not too long ago I wrote about in a previous article how to encrypt and decrypt data using Node.js. This was partially inspired by me learning how to build software wallets for cryptocurrencies and encrypting the sensitive information. However, what if we wanted to use Go instead of Node.js?
We’re going to take a look at encrypting data and then decrypting it within a Go application by using the already available crypto packages.
Read MoreWhen you’re building a business, the experts all say that you should make your list building strategy a priority. Using social networks like Twitter and Facebook for your marketing is great, but those might not be around forever. Email has been around for a long time and it will likely exist a long time into the future as well.
I’ve briefly mentioned this before, but I’m currently using Sendy to manage my email subscribers and send out my monthly newsletter. However, I wasn’t always using Sendy to accomplish this task. For around a year, I was using Mailchimp, a similar product.
We’re going to see what Sendy is, how to use it, and why I’m using it over the various alternatives that exist.
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