The Reefwing AHRS library provides an Attitude and Heading Reference System (AHRS) class for use with Arduino compatible boards. The library has been tested with the Arduino Nano, Nano 33 BLE, Nano 33 BLE SENSE (REV 1 and REV 2), Nano 33 IoT, MKR Vidor 4000, Portenta H7 and the Seeed XIAO nRF52840 Sense boards.
An Attitude and Heading Reference System (AHRS) takes information from the Inertial Measurement Unit (IMU) and processes it to provide reliable roll, pitch and yaw angles.
While testing our updated Attitude and Heading Reference System (AHRS) library with a variety of IMUs, we found that there were not a lot of options for the MPU6500. So we decided to publish our own version. #MPU6500 #MPU6000 #IMU #arduino #library
https://reefwing.medium.com/reefwing-mpu6000-mpu6500-imu-arduino-library-fa24f6686e3
If you don’t want to have your emails rejected or sent to the SPAM folder, then you need to set up SPF and preferably DKIM as well for your email domains. If you have noticed email rejections from Gmail, this is probably the reason. Since November 2022, servers who send email to personal Gmail accounts must set up either SPF or DKIM. #Email #authentication #spf #dkim
https://reefwing.medium.com/spf-dkim-email-authentication-43e20fc28dfa
We needed an instrument that can plot the voltage/thrust curve for any BLDC motor and propeller combination. We use Pulse Width Modulation to control the Electronic Speed Controller which drives the motor, and it would be nice to be able to relate the PWM percentage to thrust. Our first prototype used Force Sensing Resistors which will be compared to load cells. #arduino #fsr #dyno #shield
https://reefwing.medium.com/an-arduino-dc-motor-dynamometer-shield-part-1-54efd0c3e7e6
Check out the latest review of our app FlightPlan on freeappsforme!
This app allows you to program a flight plan for the Tello Drone and then upload it to the drone for execution. You can also fly the drone manually with the app if you wish.
While the plan is being flown, the app will display the glass cockpit. Real time telemetry from the drone is displayed on the glass cockpit. This includes pitch, roll, yaw, velocity (x, y, z), temperature, time of flight (tof), height, battery percentage, motor on time, barometric pressure, and acceleration (x, y, z).
You can download FlightPlan for FREE from the Apple App Store.
IMUs with 3 sensors each measuring 3-axes, pump out a lot of data. It can be difficult to work out how your IMU is performing, which is why the free open source data visualisation tool from x-io Technologies is so great. It is available for all major operating systems (Windows, macOS, and Linux). #arduino #imu #datavisualisation #datavisualization
Read all about it in our latest article on Medium:
This article explains how to write a C++ library to control and monitor the LSM9DS1 IMU sensor using an Arduino. If you want to really understand how a sensor operates, then write a library for it. It will take longer than you think, but the effort is worthwhile. This library can be downloaded using the Arduino IDE Library Manager or directly from our GitHub repository.
Although ChatGPT is unlikely to be replacing programmers anytime soon, it can be a useful coding assistant. In this article, we will investigate how you can use ChatGPT (GPT-3.5) as a programming tool, and compare it to the earlier model found in the Open AI Playground (GPT-3). For simplicity, we will use mostly Python in our examples. Despite its limitations, ChatGPT is seriously impressive.
Read more at Medium…
We love the progress that is being made in Machine Learning (ML) and predictive Large Language Models (LLMs), but believe users need to be cautious in their application and aware of the pitfalls. LLMs are being spruiked as a replacement for search engines (*cough* Microsoft *cough*), but until they stop hallucinating and making up facts, caution is warranted. #chatgpt #promptengineering #aihallucinations
Search Accuracy, Hallucinations, and Prompt Engineering https://link.medium.com/whhkf4Ruhyb
In Part 1 we introduced our Arduino based ESC and followed this in Part 2 with an explanation of the power stage and MOSFET drivers. Part 3 focusses on the bootstrap capacitor which is part of the driver circuit used to turn the high-side MOSFET hard on. #arduino #bldcmotor #esc #bootstrapcapacitor #IR2110
https://reefwing.medium.com/an-arduino-nano-electronic-speed-controller-esc-part-3-e17392bd2887