Low cost, low impact queue monitoring system

I’ve been fooling around with ESP32s and a bunch of sensors lately, as you may have seen from my previous posts. To actually provide something worthwhile, it occurred to me to try and build a system that could monitor the canteen queue, and tell the students what the situation is …

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8mm Film Scanner, final version with Canon 1000D

Some of you may have followed the saga of the 8mm scanner I built, using an Arduino and a Canon IXUS95 with 3D printed parts. It worked fine, and produced results that were entirely satisfactory, to a point. I first used a 10X macro lens intended for mobile phones to …

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How to enter the Internet of Things

or, bumbling your way into IoT The Internet of Things is currently on everyone’s lips. It’s the facilitator par excellence, the solver of all problems, the liquidator of all costs and the divine messenger of communications to and from devices. Or, it is an extra sinkhole of money and effort, …

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Moving on from Arduino to ESP32 – Part 3, uPyCraft and Blink

So, now that you have installed MicroPython and connected to it via PuTTY as explained in the previous post, it’s time to do some real work. As with Arduino, the “Hello World” is represented by the blinking of a LED. Your ESP has a built-in led as pin 2. All …

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Moving on from Arduino to ESP32 – Part 2, MicroPython

  In the previous post I explained the general idea behind getting an ESP32 and expanding your capabilities into the Internet of Things, or IoT. Let’s assume you have bought your first ESP32 device. Maybe it’s a WROOM, or DevKitC, model like I have. In case you want to keep …

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Moving on from Arduino to ESP32 – Part 1

Arduinos are great little things. With the analog and digital inputs and outputs, plenty of power and memory for your programming sketches, a solid IDE (integrated development environment), small price, and a wealth of examples to teach yourself the variant of C language, what’s not to like, really? But at …

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