Giant Arduino GEMMA Side Table

They're always serving up something hot at Adafruit. Make this giant Arduino GEMMA side table to use as a platform for various purposes. I needed a small utility table next to my BBQ grill so I made this. Enjoy afternoon tea or cappuccino outdoors in the fresh air with Totoro under the big tree. For all things geeky, this is fun to pair with a giant 555 timer bench. As a bonus, I will show yo ...

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Details of Waveshare e-paper displays

I have used E-Ink displays in projects three years ago, but from that time the technology has greatly evolved. That time displays were hard to get, expensive and difficult to use. Now things seem to change with e-ink displays available to the maker market :-). I’m able to get a 128×296 pixel e-paper display for $10! And for little more money I can have displays with black/white/red colors! Waveshare When I ...

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MEC extender – and you’re a level higher

We already know, that Switches MEC Unimec switch in up to eight ways and also that they´re available as momentary or alternate (latching). UNIMEC switches feature perhaps only one “disadvantage” – that on the same PCB no other higher components can be used (which would be higher than the switch). If you´re satisfied with the UNIMEC features, but despite that you cannot use them in your application right for ...

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Arduino Ethernet Camera

I will introduce a Arduino ethernet Camera. You can take a picture inside of house which have a this arduino ethernet camera by just openning the web site if you follow this contents. It is very easy and simple way which don't need any app. for smart phone. Let's start. Step 1: Prepare Meterials We need a several meterials. 1. Arduino Uno 2. Arduino Ethernet Shield 3. Serial Camera ( https://learn.adaf ...

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How to drive Nokia 5110 84×48 LCD display with Arduino

Introduction In the previous tutorial I showed how to build a weather station using DHT11 and BMP180 with an Arduino. However, the project has a downside which is the power consumption of the 16X2 LCD. If we were building a battery powered project with the desire to last for several weeks and probably several months, like a weather station for instance, then we’ll have to replace the LCD keypad shield from ...

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64 KEY INFRARED REMOTE CONTROLLER USING PT2222M – NEC CODE

64 channels Infra-Red Remote Transmitter circuit build around PT2222M IC, The IC is pin to pin compatible with NEC uPD6122 respectively, the remote is capable of controlling 64 functions keys and 3 double keys. The PT2222M Infra-red remote control transmission ICs using the NEC transmission format that is ideally suited for TVs, DVD Players, Audio Equipment, Air Condition, etc. By combining external diode a ...

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Arduino Controlled CNC / 3D Printer Hybrid

The objective of this instructable is to guide your way throw the entire making process of building a BuildersBot machine. An open design Arduino Controlled CNC Router that can also perform 3D printing. The instructions will cover all areas such as design, mechanics, electronics and software. But before you go any further take a look at machine's concept design: https://youtu.be/Dt7uyuZ4DJA And also the mac ...

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A data-acquisition system on a chip

Multifunction data-acquisition systems have been around for a long time as stand-alone instruments, plug-in cards, cabled computer peripherals, and embedded in systems. Such systems are often designed with separate ADCs, DACs, and digital I/O devices. Many microcontrollers include ADCs and DACs, but that locks you into using that device. The AD5592R from Analog Devices combines all of these I/O functions, l ...

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Arduino Robot

first of all, i am sorry if i have grammar mistakes, i am asian and i am 13 years old, i study arduino by my self (mostly my self) and this is my first project and also my first instructables. this is the robot that i used to compete with my friends in soccer robot. i did some modifications when i used it but it is broken now, so what i show you here is just a smartphone control robot. i will upload the imp ...

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The Making of a Cooled CMOS Camera

Now this post will be for some serious stuff involving video compression. Early this year I decided to make a lossless compression IP core for my camera in case one day I make it for video. And because it’s for video, the compression has to be stream operable and real time. That means, you cannot save it to DDR ram and do random lookup during compression. JPEG needs to at least buffer 8 rows as it does comp ...

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Arduino-Using Shift Registers With Ultrasonic Sensors

The HC-SR04 Ultrasonic range sensing module is great for sensing distances that can be used as an input for your Arduino projects, but using multiple (more than two) can quickly cost you a lot of pins. This basic Instructable gives you the code and basic instructions to use the 74HC595 8 bit series to parallel shift register so you can connect up to 8 HC-SR04 modules (16 IO pins) while using only 4 Arduino ...

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LTC3402 – 2A, 3MHz Micropower Synchronous Boost Converter

Features Synchronous Rectification: Up to 97% Efficiency 2A Switch Current Rating Fixed Frequency Operation Up to 3MHz Wide Input Range: 0.5V to 5V Very Low Quiescent Current: 38µA (Burst Mode Operation) 2.6V to 5V Adjustable Output Voltage 0.85V (Typ) Start-Up Voltage No External Schottky Diode Required (VOUT < 4.3V) Synchronizable Switching Frequency Burst Mode Enable Control Antiringing Control Reduce ...

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