Cyberdyne forgot to give this model a lifelike eyeball -- that's OK, we'll use a HalloWing and convex lens to fix the problem! The eye will look around menacingly, set inside this costume mask turned into an animatronic bust. Place it in your window or popping up from behind a fence to freak out your visitors!
This sensor contains a thermistor temperature sensor and a capacitive humidity sensor. A small microcontroller inside does the readings and provides a simple I2C interface for reading the finished & calibrated output data. This guide will cover how to use this sensor, complete with wiring diagrams and code examples. Check it out!
To keep costs low, the Raspberry Pi does not include a Real Time Clock module. Instead, users are expected to have it always connected to WiFi or Ethernet and keep time by checking the network. Since we want to include an external module, we'll have to wire one up. We'll go with the easy-to-use and low-cost DS1307.
Water evaporation reduces water volume inside a marine aquarium, affecting the salinity. This guide will walk through the build process of a water level controller (also called as auto top off system) that employs a water level sensor to detect water evaporation and then turn on/off water pump to add fresh water. This guide builds upon the power controller guide.
Oh noes! An 11th-hour invite to a Halloween function and you don’t have a costume ready! Or maybe you want something discreet but fun when the work dress code doesn’t permit a full werewolf getup. HalloWing to the rescue! Our spooky little development board, plus a few extra tidbits from Adabox 009 (or your parts collection) can quickly make an eye-catching accessory that no good host would turn you away for being under-dressed. Some of these ideas require just a few minutes.
This makes a great jump scare for you porch on Halloween. The PIR sensor will detect a person at just the right moment to drop a cockroach suspended from a filament line. The HalloWing will also play a terrifying hissing sound over it's speaker port! Use the TFT display for user interface prompts. Program it all using CircuitPython.
What's better than a single LED? Lots of LEDs! The matrices use a driver chip that does all the heavy lifting for you: They have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface. Here is a detailed guide showing you how to solder, wire and control the display.
This little sensor is a great way to add UVA and UVB light sensing to any microcontroller project. The VEML6070 from Vishay has both true UVA and UVB band light sensors and an I2C-controlled ADC that will take readings and integrate them. The sensor also comes with calibration registers so you can easily convert the UVA/UVB readings into the UV Index.
This pressure sensor is special because it comes with a metal port! Unlike other pressure sensors, you can easily attach a tube to it, to measure air pressure inside a close space. In particular we think this would be a great sensor for use with making DIY assistive tech "Sip & Puff" interfaces, or measuring the pressure within a vacuum chamber or other pressurized container.
Are you the kind of person who doesn't like taking down the skeletons and spiders until after January? Well, we've got the ADABOX for you. This is electronics at its most spooky! ADABOX 009 is Halloween themed, for all of us who love scares, costumes, and (of course!) candy. OK so we didn't fill this ADABOX with candy corn, but we did curate a collection of inspiring electronics to make you Halloween more electric. You might have so much fun, you'll celebrate it year round!
This guide will walk through the build process of controlling AC equipment using an automated power strip (power controller). The power controller allows scheduled and on-demand control. Power controllers are simple and inexpensive to build and it acts as a foundational layer for temperature or water level controllers.