iotespresso.com is a website for everything IoT. It is not restricted to just the ‘things’, i.e., IoT nodes, but is quite holistic. Think of any IoT company, and think of all the tech subsystems within that company – firmware, hardware, backend, frontend, data science, and others. All of those subsystems will find relevant content on this website.
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How to handle promise rejections in Async Await
A promise in JavaScript can be resolved if the code execution completed as expected, or it can be rejected if there are any errors. When using async await, you may be awaiting a promise, but if something goes wrong, then you may get an ‘Unhandled Promise Rejection’ error. This happens because each promise rejection needs… Continue reading How to handle promise rejections in Async Await
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A beginner’s guide to Cloud Computing
Curious about the hype surrounding platforms like Amazon Web Services (AWS), Microsoft Azure or Google Cloud Platform (GCP)? Read on to find out.
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A beginner’s guide to ESP32
It is quite likely that you’ve heard of ESP32, especially if you are into IoT. Ever wondered what the hype is all about? Then this is the article for you.
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AWS IoT remove a Retained Message
Learn how to remove a retained message from AWS IoT Core using the AWS IoT MQTT Test Client (Console) and also programmatically using nodejs.
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AWS Lambda Function URLs
In April 2022, AWS made a powerful addition to Lambda: Function URLs. Learn all about them in this post, from enablement to configuration and best practices.
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Sending non-English text via HTTP in NodeJS
Have non-English characters (Hindi, Japanese, etc.) in your HTTP request body in Nodejs? Chances are that your requests are failing. Here’s the fix.
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How to use Mutex in ESP-IDF
Want to access critical resources from multiple threads in ESP32. Learn how to use Mutexes in IDF for achieving just that.
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A beginner’s guide to HTTPS
Ever wondered how your credit card number is securely transmitted over the internet? Ever wondered how HTTPS works on a high level? Read on to find out.
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ESP32 Arduino time operations
This article can act as a reference whenever you need to perform time operations on ESP32 in the Arduino IDE (bookmark it!).