Using an Accelerometer & Trigonometry to Determine an Object’s Height | via @PublicLab

Cool project spotted over at Public Lab:

So now I can convert accelerometer output to tilt angle, and more importantly, so can the Arduino. When the Arduino knows the angle, it can use trigonometry to find dimensions of right triangles. Every different tilt angle creates a new triangle in which the arm is the hypotenuse and the other two sides are vertical or horizontal. The length of the hypotenuse (arm) is known, as is the height of the arm’s pivot point. So the Arduino can compute the length of each triangle’s adjacent side and derive the height of the arm’s end above the floor (Figure 4).

Figure 4. The Arduino can derive the height of the arm above the floor because it is told two of the other three dimensions and given a good hint about the angle. It computes the angle and then the adjacent side and then the height.


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.

Join 28,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Make it pink!

Electronics — SMT Tip – Stop moving around!

Python for Microcontrollers — Python on Microcontrollers Newsletter: PyCon US, Mother’s Day, KiCad and more! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — IoT Pool Monitor, Edge AI, and more!

Microsoft MakeCode — MakeCode Arcade Spring Update

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 5/12/2021 Featuring Adafruit Rotary Trinkey – USB

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.