My older son recently started school and needed his own desk for doing homework. I wanted to make something nicer than a simple tabletop with legs, and realized that I could also build in a bit of fun for when the homework is finished. Both my boys and I still had space travel on our minds from our summer trip to Kennedy Space Center. For this desk project, I decided to go with a NASA theme. I researched the Apollo Program as well as NASA’s Mission Control Center, and designed my own console roughly based on those. I say “roughly” because the actual Mission Control does more monitoring than controlling, and isn’t awash in the whiz-bang rocket noises young kids appreciate. I took great liberties and made more of a “space-themed” play console than an accurate simulator. My goal was simply to provide some extra ideas and sound effects for my two sons to play “space” together.
…The programming of the console, which I posted to GitHub, has the Arduino and the Raspberry Pi working cooperatively. The Arduino uses four I/O expanders (MCP23017) to read the state of switches and buttons. Whenever a switch (be it a momentary push-button switch, a rocker switch, or a toggle switch) changes state (on to off or off to on), the Arduino tells the Raspberry Pi over a serial connection (USB cable). The Raspberry Pi plays a sound or starts a sequence of events, if necessary, and sends any commands for controlling LEDs to the Arduino. The Arduino uses five LED matrix drivers (HT16K33 on a carrier board from Adafruit) to control all of the LEDs. That allows for 640 separate LEDs, which sounds like a lot, until you consider that the numerical displays have eight LEDs per digit and the LED bargraph displays have 24 LEDs per graph (they make three colors by having a red and green LED in each segment so they can make red, yellow, or green). The potentiometers are read by the analog inputs of the Arduino….
We are angry, frustrated, and in pain because of the violence and murder of Black people by the police because of racism. We are in the fight AGAINST RACISM. George Floyd was murdered, his life stolen. The Adafruit teams have specific actions we’ve done, are doing, and will do together as a company and culture. We are asking the Adafruit community to get involved and share what you are doing. The Adafruit teams will not settle for a hash tag, a Tweet, or an icon change. We will work on real change, and that requires real action and real work together. That is what we will do each day, each month, each year – we will hold ourselves accountable and publish our collective efforts, partnerships, activism, donations, openly and publicly. Our blog and social media platforms will be utilized in actionable ways. Join us and the anti-racist efforts working to end police brutality, reform the criminal justice system, and dismantle the many other forms of systemic racism at work in this country, read more @ adafruit.com/blacklivesmatter
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.