An update on Chaac weather station project we covered previously: With this latest redesign, I made a few more changes. First of all, I decided I would no longer be afraid of LoRa and put in a LoRa radio module. This will, with the right firmware, allow for standalone operation using LoRaWAN and The Things […]
Category Archives: wireless
An ESP8266-based temperature, humidity and line voltage monitor
KA7OEI’s temperature/humidity/line voltage web server/telemetering device: As anyone who reads this blog probably knows, I have a bit to do with the operation and maintenance of the Northern Utah WebSDR – a remote receiver system that allows anyone with Internet access and a web browser to listen to the LF, MF, HF and some of […]
Pi Zero print server
Tom writes, “I can’t believe it! I actually finished a project the same day that I started it. A while back I won a Raspberry Pi Zero W in a promotional competition for Zipcar, and today I set it up as a wireless print server.” More details on Magic Smoke blog.
Using modular synth to control Atem camera switching over WiFi using ESP8266
Sebastian writes: I’ve been wanting to control my camera switching from my modular synth. So I made a setup where a low to high transition on a digital input on an ESP8266 module generates an OSC message on the WiFi network for the ATEM Mini Pro switcher to change cameras. Here, it’s triggered from the […]
Broadlink smart bulb conversion to open source
VikTak writes: Many of the current bulbs on the market are based on the same chip, the ESP8266. These bulbs are very easy to “hack” and replace the firmware in them with the likes of my ActoSenso or the more widely known and used Tasmota. However, not all bulbs use the same chip. One of […]
Sinilink WIFI-USB mobile remote controller
Peter Scargill blogged about his AliExpress Sinilink WIFI USB controller project: So here’s a thing – I had this all set up and working perfectly with Tasmota on my WiFi – then plugged the unit (USB male end) into a USB3 connector – and it immediately lost the lot – well, the settings, not Tasmota […]
ESP8266 MP3 sound machine v2
Zack Lalanne writes: Last summer, I made an ESP8266 MP3 Sound Machine using ESPHome to play calming sounds when my son goes to sleep. I used ESPHome to develop the firmware so it could communicate with my Home Automation platform, Home Assistant. Well, requirements change and projects need updating. So over the holidays, I created […]
Wireless quiz / game buzzers
An Arduino based remote buzzer project by Flute Systems: Base station uses an Arduino Pro Mini 5V. The reason for having 5V in this circuit is the TM1637 7-segment display. We’re using a 5V active buzzer module, two wires – signal and ground. On the left are the Adafruit PowerBoost 1000C for 5V and the […]
DIY IoT garage door opener
Ludzinc wrote a series of posts detailing his IoT garage door opener. See the full post on Ludzinc blog.
Make an amazing $6 digital radio with an old ESP8266 and a VS1053 decoder
Mike Diamond @ whatimade.today has written an article on how to make a low cost digital radio with an old ESP8266 and a VS1053 decoder. See the full post at whatimade.today.
A self-expanding ESP32 PWM board
Eric Gunnerson writes: I’ve been working on a little ESP32 expansion board/shield for an LED project I’ve been working on. One of the nice things about the ESP32 is that it has a peripheral known as “LED control” that provides 16 independent channels of PWM for controlling LED brightness, and my project uses that capability. […]
DIY wireless temp/humid/pressure sensors for measuring vacuum sealed 3D printed filament containers
Scott M. Baker writes: I made some wireless sensors, using BME280 temperature, humidity, and pressure sensors, together with SYN115 transmitter modules. I used these to verify the storage of vacuum sealed “PrintDry” 3D filament storage containers. See the full post on his Scott M. Baker blog. Check out the video after the break.
Open source hardware ESP32-ADF
Here’s an open source hardware development board for Espressif audio development framework, the ESP32-ADF, from Olimex: With ESP32-WROOM-B module with 8MB RAM and 4MB of Flash, two microphones, two 3W speakers, codec, amplifier, Lipo charger, USB with programming, Audio 3.5mm jack, ESP32-ADF board offers everything you need to start playing with Espressif Audio Development Framework. Check […]
Control the bicycle traffic signal with a Particle Photon
Glen has been working on a Wi-Fi enabled bicycle traffic signal project: In the first post in this series, we built a miniature LED bicycle traffic signal using 3D printing, laser cutting, a sticker, and an Adafruit Neopixel Jewel. In this post, we’ll look at bringing the signal to life using a Particle Photon. We’ll […]
WiFiChron alarm clock
Here’s a cool WiFiChron clock with 8-character alphanumeric LED display by Florinc: For WiFiChron, two cascaded modules make an 8-character display functionally similar to HDSP-2534, but bigger and more visible. With the “Display Abstraction Layer” already in place, software support should be easy to integrate, since controlling it with the HT16K33 breakout allows the re-use of […]
Wifi based DIY 5V switcher for led-lights
Albert posted a detailed how-to on building DIY ESP-12F based USB-5V switcher: 5V powered 100LED circuit was consuming around ~1.8Watts(though 5.1Ohm series resistor was really hot) and the brightness of the LED’s were not bad, especially difference between first led and last led brightness didnt bother me it was hardly noticeable when seen from distance. So […]
Weather station project
Alvaro Prieto has been working on a wireless weather station project: After playing around with the breakout boards, I decided it was time to integrate it all in a single board. I named it Chaac. This is where I ran into issues with MBED. Making the board support package (BSP) for a custom board was […]
New 2.5D pen/laser ESP32 controller
Bdring published a new build: I have done several pen and laser machines lately, so I decided to create a custom PCB for Grbl_ESP32 for these types of machines. This is a small (70mm x 60mm) PCB with all the features a pen plotter or laser cutter/engraver would need. These typically use stepper motors for […]
trigBoard – Ultra low power ESP8266 IoT platform
Kevin Darrah writes: The trigBoard is an IoT project that does one thing – it pushes you a notification triggered by a digital input. Well, it’s much more than that, but this is the inspiration. I wanted to design a WiFi board that essentially sleeps most of its life, but when that door switch, flood […]
uMesh – A self-contained, battery operated ESP32 module
Jarrett published a new build: I’ve been working on an ESP32 module. Part of the problem I’ve been seeing with inexpensive IoT dev boards, is that the design around the power system hasn’t been very good. Here’s my attempt to fix that. This is a battery-ready module with a proper lithium battery charge circuit, lithium […]