We have updated the Adafruit IO SSL/TLS certificate. If you are having issues connecting, please ensure you have the latest Adafruit IO Arduino library version by navigating to the Arduino Library Manager (from the Arduino IDE, navigate to: Sketch -> Include Library -> Manage Libraries):

The certificate is fingerprinted in that library and you will have issues connecting if that library is out of date. The current version with the latest fingerprint is 3.7.0. There also an example that was updated in the Adafruit MQTT Library, we’ve updated this library too.

If you are using an ATWINC1500 module, you’ll need to update the certificate built into the module. Please follow these instructions on this Learning System Guide for step-by-step instructions…

In the future, we will announce this much further in advance to ensure everyone is aware of the scheduled certificate updates to reduce downtime. The next update will be in approximately 2 years.

If you had any significant downtime or are having issues getting connected again, please reach out to us and we can assist you.

IoT Projects

Microcontroller-based Star Trek TNG operational display

Darian Johnson built a Star Trek: The Next Generation inspired terminal that displays the weather, indoor temperature, volatile organic compound strength, fitness information, and more. This is one of the nicest-looking personal smart-terminals we’ve seen and even features a resistor color-code chart and a current measurement tool. - HackADay

Fermenters Friend – Home Brewing Temperature Monitor

After making a brew, one needs to “let it ferment, trying to control the temperature range from an ideal of around 18-22 C”. They used a Cheeseboard ESP8266 development board to monitor the brew’s temperature as it ferments and display it on a LCD and online. - Adafruit

Vintage Terminal Home Automation Home

Repurposing a ADM-3A terminal as a home automation hub and display. - HackADay

DIY Alexa-Controlled Air Conditioner

Summer is heating up in the United States and this DIY solution allows you to simulate the IR commands of an air conditioner remote control using an ESP8266. The ESP8266 is connected to HTTP/AWS so it can receive and translate Alexa commands to control your air conditioner. - EspressIf

Kindle Home Assistant Interface

Repurpose your kindle as an e-ink display for your Home Assistant setup. -GitHub

Minecraft Friend Notification Sign

This internet-connected sign lights up whenever your friends are online in your favorite Minecraft server. - Youtube

ESP32 Micropython Sensor and Web Server

ESP32-powered MicroPython sensor node also serves temperature data on its own web server. How2Electronics

IoT News and More!

free5GC - an Open-Source 5G Mobile Core Network

The free5GC project is building an open-source 5G mobile core (5GC) network. - Free5GC

ClusterDuck Protocol - LoRa, WiFi, and Bluetooth Mesh Network

The ClusterDuck Protocol is an open source firmware for mesh network internet-of-things devices based on LoRa radio and can include WiFi and Bluetooth compatibility. This is an interesting potential alternative for Particle’s IoT BLE Mesh users. - ClusterDuck

GNUHealth in a Box: Deploying hospital health systems with a Raspberry Pi

GNU Health, a “health and hospital information system” now has an image which can be installed on Raspberry Pi’s in remote areas without internet, nursing homes or laboratories. - GNUHealth

Adafruit IO Stats and more!

Adafruit IO has 332,834 total users! Here are the interesting stats from the last 30 days:

• Total Feeds: 516,432 (and counting!).
• There are over 17,600 feeds online as of time of writing (June 25, 2020).
• There are an average of 4,605 MQTT connections active 24/7.

Sign up for Adafruit IO (for free!) by clicking this link. Ready to upgrade? Click here to read more about Adafruit IO+, our subscription-based service. We don’t have investors and we’re not going to sell your data. When you sign up for Adafruit IO+, you’re supporting the same Adafruit Industries whose hardware and software you already know and love! You help make sure we’re not going anywhere by letting us know we’re on the right track.

IoT Projects

Weather Station Planter

A different type of weather station this month - a planter which simulates the real-time weather of a location by changing the colors of the planter. - HackADay

Completely Automated M&M Launcher - Voice Activated Using Alexa

To keep busy during quarantine, Harrison McIntyre built a fully automated M&M candy launcher which is activated using Amazon Alexa. This launcher can perform facial detection using computer vision and launches M&M’s into your mouth. - YouTube

Cosmo Clock

This clock changes color every time a new astronaut enters space. - Instructables

officeAir: A Google Sheets Logger with Raspberry Pi

This project lets you easily log temperature and humidity data via Raspberry Pi and a sensor. It logs data to Google Sheets, collecting the raw data and automatically drawing a nice chart as data coming in. - GitHub

Low-Power Wildlife Trail Camera

DIY motion-activated camera module takes photos of wildlife and stores them on a microSD card. -MarksBench

METAR Temperature Data Display Using ESP8266

An ESP8266 (NodeMCU) requests online METAR data from 9 stations in a cyclical (rotating) manner, and displays their decoded temperatures on 7-segment displays. - YouTube

Laundry Monitor

This project senses the current of your washer and sends a SMS when the wash cycle finishes. This project is different than the usual laundry monitoring project since it’s reliable and does not require disassembling appliances. - HackADay

Smart Pill Dispenser

The Smart Pill Dispenser is a machine that will give your grandparents the pills they need, when the need it and in case they’ll forget - you will get a notification about that! - Instructables

BLE Notification Vibration Bracelet

A wearable bracelet which buzzes when you’ve received notifications from an iOS device using an Adafruit Feather Sense and DRV2605L breakout. - Adafruit Learning System

IoT News and More!

Video inside a Self-Driving Tractor Cab

Have you ever wondered what it’s like to be in the cab of a tractor on a farm? Imagine it’s a steering wheel and a radio? Modern agriculture is a bit more complex and awesome these days. - YouTube

Want a radio service operator license? FCC starts offering radio licensing exams remotely

During the pandemic, the FCC announced that ham radio licensing exams can be administered remotely. -swling

The Services Shakedown: Wink Hardware transitions to a monthly subscription

Wink Labs announced their home automation hub, the Wink Hub, is transitioning to a monthly subscription of $4.99 per month. If someone fails to pay this fee, device unfortunately loses most of its functionality. HackADay writer Elliot Williams discusses the ‘IoT Trap’ and wonders how people can avoid it. - HackaDay

New Hardware: Teensy 4.1

PJRC released the Teensy 4.1 which includes a blazing-fast IMXRT1062-based microcontroller with 10/100Mbit ethernet. - PJRC

How the COVID-19 pandemic is spurring IoT growth while the world’s business slows

Kevin C. Tofel writes about the state of the expanding IoT market ‘as people look for health monitoring systems…and other remotely accessible products’. - StaceyOnIoT

New Hardware: LilyGo T-Watch, ESP32 Watch

LilyGo released their T-Watch, a sub-$30 smart-watch based on the ESP32. LilyGo is supporting Arduino, MicroPython and Scratch programming languages. - Tindie

Espressif Releases Apple HomeKit ADK

Makers can now use the HomeKit ADK for ESP32 to prototype non-commercial smart-home devices. -Espressif

Adafruit IO Stats and more!

Adafruit IO has 328,224 total users! Here are the interesting stats from the last 30 days:

• USERS ACTIVE (30 days): 13,237
• TOTAL FEEDS: 505,852
• FEEDS CREATED (last 30 days): 13,793
• There are about 4,200+ MQTT connections active 24/7.

Sign up for Adafruit IO (for free!) by clicking this link. Ready to upgrade? Click here to read more about Adafruit IO+, our subscription-based service. We don’t have investors and we’re not going to sell your data. When you sign up for Adafruit IO+, you’re supporting the same Adafruit Industries whose hardware and software you already know and love! You help make sure we’re not going anywhere by letting us know we’re on the right track.

IoT Projects

PyPortal Quarantine Clock

Do you know what day it is? Perhaps you’re finding yourself losing track of time and your routine is suffering. The PyPortal Quarantine Clock has got you covered! It only displays the essential “stay-at-home” information - the current day and a rough estimate of the time. - Adafruit

Smart Video Intercom System

This Raspberry Pi-powered hardware notifies you when guests arrive and lets you talk to them on your phone through internet calls. - Hackster

NerfOrNothing: Instrumenting a NERF Football

Timothy Kanarsky and his team “cut a Nerf football in half, stuck a WiFi-enabled microcontroller and some accelerometers inside, and wrote some inertial-navigation code to track throw distance and spin rate”. - HackaDay.io

Simple Home Alarm System

Need an alarm system for your home? Build one using only two components: an ESP32 and a 433MHz RF receiver. If you want to adapt this project to a different sensor - there’s (lots of different sensor types)[https://www.ebay.de/itm/193291348372] and devices operating on the 433MHz frequency available on the internet. - GitHub

Add Coverage to your IoT Project with a Satellite Modem

Who’s got the best coverage map? Anyone using the Iridium satellite constellation, that’s who. How does whole Earth coverage sound? This guide shows you how to setup and use the Rock Seven RockBLOCK 9603 Iridium Satellite Modem. This hardware is tied to service that is also provided by Rock Seven. - Adafruit

Reverse Engineering a Ceiling Fan Remote

Reverse engineering a ceiling fan remote for home automation. - HackaDay

Wearable Continuous Temperature Monitor

Hands-free temperature monitoring means you can sleep soundly. Data is sent to an Adafruit IO account for long-term storage and visualization. Use Adafruit IO Triggers to be notified by email when the temperature increases past a set threshold. -Adafruit

Connected Weather Cloud Lamp

This is a fun project that plays with how to visualize information using only light and sound. What better way to have some fun with this than to make an Internet connected cloud that connects to an open source weather API? - Adafruit

Apollo Pi Thermal Camera

OldTechNewSpec repurposed a vintage Apollo microwave detector from 1979 as a thermal camera. It’s powered by a Raspberry Pi Zero with an AMG8233 thermal camera breakout, displaying the temperature on a 1.3″ TFT display. - Instructables

IoT News and More!

Behind the scenes of fighting coronavirus using GPUs

Gamers are using their high-performance GPUs to participate in Folding@Home, helping to understand proteins interactions of SARS-CoV-2 virus that causes COVID-19. - HackaDay

Stay Smarter than Your Smart Speaker

Working at home on confidential projects? Your speaker may be spying on you. Kristina Panos outlines “the best practices of confidential work in earshot of these audio-triggered gadgets?”. - HackaDay

83 Billion IoT Connections by 2024

A new study from Juniper Research found that the total number of IoT connections will reach 83 billion by 2024, rising from 35 billion connections in 2020. - Juniper Research

Solid, a New Approach to the Web by Sir Tim Berners-Lee

Solid is a new approach to decentralizing the Internet, led by Sir Tim Berners-Lee. - Solid

Demand for Sharp’s Face Masks Crash Servers and Air Conditioners

Sharp’s online store server went down, taking smart gadgets including air conditioners with it. - The Verge

New ESP32 AI Development Board, ESP32-Korvo

ESP32-Korvo is Espressif’s new AI development board. Equipped with a multi-microphone array, it can achieve high performance, spoken-command recognition and far-field voice wake-up. - EspressIf

Are Insect Brains Better for Neural Computing than Human Brains?

We model existing neural networks based on human brains to replicate human intelligence. Tasks like navigation for driverless cars and drones have researchers wondering if they should focus on insect brains instead. - NetworkWorld

The Advantage of LPWAN Chirp Technology

Chirps are great for low power wide area networks (LPWAN) because they occupy a single dimension. Semtech’s Oliver Seller takes us through what chirps are and why they’re useful for LoRa-based signal modulation. - SemTech

Adafruit IO Stats and more!

Adafruit IO has 323,646 total users! Here are the interesting stats from the last 30 days:

• USERS ACTIVE (30 days): 13,553
• TOTAL FEEDS: 495,048
• FEEDS CREATED (last 30 days): 14,281
• There are about 4,200+ MQTT connections active 24/7.

Sign up for Adafruit IO (for free!) by clicking this link. Ready to upgrade? Click here to read more about Adafruit IO+, our subscription-based service. We don’t have investors and we’re not going to sell your data. When you sign up for Adafruit IO+, you’re supporting the same Adafruit Industries whose hardware and software you already know and love! You help make sure we’re not going anywhere by letting us know we’re on the right track.

A note from the editor - We’ll make it together

Phil and Ladyada here, we usually do the newsletter each week, this week are diverting all our attention to efforts in NYC and awhile the world to help combat the COVID-19 outbreak. Thank you community for keeping us strong, and thank you Adafruit team for running the newsletter for now.

Adafruit was deemed an essential manufacturing, service and business in NYC by – Executive Order 202.6. We have a blog post with an overview and things are changing quick, stay tuned for updates on everywhere Adafruit is on social media - Read more.

We are Shipping a limited number of orders for health care professionals / urgent needs only. All other orders are being held for now.

Adafruit is a 100% woman-owned, loan-free, VC-free. profitable, USA Manufacturing company. Please see our about page and press page to read about us. Our founder and lead engineer is Limor Fried, a MIT Electrical Engineer.

We have paused some operations in NYC due to COVID-19, we are paying all team members, contractors, and more.

There are no layoffs for 130+ Adafruit team members. Adafruit was deemed an essential service to distribute/make some PPE (Personal Protection Equipment) such as face shields, and manufacturer electronics for essential life-saving/preserving equipment and development which is needed in New York and beyond.

Adafruit Industries located at 150 Varick Street, New York, NY 10013 by Executive Order 202.6, “Essential Business” by New York State: https://esd.ny.gov/guidance-executive-order-2026

Adafruit provides the following services:

Medical equipment/instruments including: Warehouse/distribution and fulfillment

Essential manufacturing including: Microelectronics/semi-conductor

Essential health care operations including: Medical supplies and equipment manufacturers and providers

We are maintaining some, but not all, business operations to assist in providing these valuable services to combat the COVID-19 outbreak.

If you are working on COVID-19 related efforts, we are shipping.

IoT Projects

AvoRipe – Check your Avocado’s Ripeness

Eden Bar-Tov built a device to check an avocado’s ripeness twice a day. If an avocado is ripe (AvoRipe checks both color and softness), a push notification will be sent to your phone notifying you that the avocado is ready to eat. - Adafruit

Stay Informed: How to Pull your Own COVID-19 Data

Tom Nardi wrote a guide on hackaday for pulling and scraping raw data about COVID19 from multiple data sources. If you’re building a way to monitor the total number of cases in your state or country, this guide provides reputable data sources along with Python code snippets. -HackaDay

Upcycled Cassette IoT Display

Martin Mander, aka Old Tech. New Spec, gives life to obsolete technologies, usually by sticking a computer in them and connecting them to the internet. In this example of the upcycler’s craft, he’s turned a cassette (an ancient, rubbish way of recording music) into an IoT notification reader. - Adafruit

Space Station Grow Box Replica

m1st3r_c is building a replica of the plant grow-box used on the Internal Space Station for the Natural History Museum of London. - Adafruit

Pushup Counter

Stay fit even if you have to stay inside! Use a proximity sensor to count your push-ups. - Hackster

Ethernet for CircuitPython with Wiznet5K

Wireless is wonderful, but sometimes you want the strong reliability of a wired connection. If your CircuitPython project is going to be part of a permanent installation, you’ll want to add ethernet networking to your project. - Adafruit Learning System

IoT News and More!

Are All Edge Devices “Servers”?

A discussion broke out on Twitter between leading experts in the field of servers, IoT, gateways and single-board computers over the future of “edge computing.” This post is meant to summarize what was talked about for a broader audience because it is relevant to how we, as an industry, think and talk about “The Edge.” - Adafruit

Eye on NPI - ESP32-S2

First off, we are kicking off “EYE on NPI” video series with the Espressif ESP32-S2 SoC. These chips come with a great core, lots of RAM, proven TLS+TCPIP stack, a complete development platform, and lots of code examples. If you’ve used the ESP8266 or ESP32 many elements will be familiar to you! The best new peripheral for this chip is the new USB OTG system. Yes finally native USB comes to ESP! - Adafruit

NEW VIDEO: What is Adafruit IO?

Build IOT projects with Adafruit IO! Control your projects over the internet and create a dashboard to visually see your sensor data - YouTube

Watchy, an ESP32-powered Open Source e-Ink Smartwatch

Squarofumi designed a beautiful open source smartwatch with Arduino and Python Support. This watch has a “200×200 E-ink display, WiFi + BLE (Powered by ESP32), BMA423 Accelerometer, 4 Buttons + Vibration Motor, DS3231 RTC for accurate time keeping, and a 2 Week Battery Life”. Schematics and code are available on GitHub. You can also purchase one for $55. - SquaroFumi

IoT Design Week - Machine Learning and Artificial Intelligence

Ladyada and PT talked about Machine Learning and Artificial Intelligence with Microchip Technology. - YouTube

Espressif ESP32-S2 Sample Boards Shipping

We’re seeing some ESP32-S2 samples appearing in the hands of more developers. We’re looking forward to TinyUSB, and then CircuitPython on this module. - TinyUSB

How Nordic Semiconductor Built ThingyWorld for Embedded World 2020

Nordic Semiconductor built an impressive asset tracking demo for their booth at the Embedded World 2020 conference. Their Thingy:9’s are distributed all over the world and tracked using AWS IoT core. - Nordic DevZone

Adafruit IO Stats and more!

Adafruit IO has 318,457 total users as of March 27, 2020! Here are the interesting stats from the last 30 days:

• USERS ACTIVE (30 days): 16,697
• TOTAL FEEDS: 482,240
• FEEDS CREATED (last 30 days): 21,104
• There are about 4,330+ MQTT connections active 24/7.

Sign up for Adafruit IO (for free!) by clicking this link. Ready to upgrade? Click here to read more about Adafruit IO+, our subscription-based service. We don’t have investors and we’re not going to sell your data. When you sign up for Adafruit IO+, you’re supporting the same Adafruit Industries whose hardware and software you already know and love! You help make sure we’re not going anywhere by letting us know we’re on the right track.