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Archive for the ‘wireless’ Category

19th century radio technology meets the Beaglebone

Monday, March 21st, 2016

Ashish Derhgawen built a coherer-based receiver with a simple decoherer mechanism, and connected it to a Beaglebone to decode the received signals: In my last post, I described how I made a spark-gap transmitter and receiver. For the transmitter, I used a car's ignition coil to produce high voltage sparks,...

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nRF24L01+ 2.4 GHz wireless connectivity with the tinyK20 board

Thursday, March 17th, 2016

Erich Styger writes: I’m using the tiny and inexpensive Nordic Semiconductor nRF24L01+ transceiver (see “Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board“) in many projects: it costs less than $3 and allows me to communicate with a proprietary 2.4GHz protocol in a low power way (see “IoT: FreeRTOS Down to...

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Posted in ARM, wireless | No Comments »

OpenGarage, an Open-source WiFi garage door opener

Wednesday, March 16th, 2016

Ray Wang has published a new project called OpenGarage, an open-source garage door opener based on ESP8266 and the Blynk app: Today I am very excited to introduce you to OpenGarage — an open-source, universal garage door opener built using the ESP8266 WiFi chip and the Blynk app. I’ve wanted to...

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Posted in sensors, wireless | No Comments »

ESP8266 wireless SID project

Monday, March 7th, 2016

bl4rk shares his ESP8266 wireless SID in the project log forum: I've been trying to start a SID project for about 5 years now. Back then I wanted to use a 6502 along with a CPLD and other 'real' hardware... while I might still do something like that (or even try to...

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Posted in project logs, wireless | No Comments »

Building a low cost wifi camera

Saturday, February 6th, 2016

Johan Kanflo designed a Esparducam board and built a low cost wifi camera with an Arducam Mini and a ESP8266 Wifi module: Sometime ago I came across the Arducam Mini which is quite a nice camera module from UCTronics. It is a small PCB with a two megapixel OmniVision OV2640 sensor, an interchangeable lens...

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Posted in DIY, wireless | 7 Comments »

ESP8266 – Wireless weather station with data logging to Excel

Thursday, January 28th, 2016

Rui Santos writes, "In this project we are going to establish a wireless communication between two ESPs and send data from three sensors to an Excel spreadsheet. This tutorial shows a wireless weather station with data logging that you can implement in your home." Project info at Random Nerd Tutorials...

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Posted in tutorials, wireless | 3 Comments »

ESP8266 mains energy monitor

Tuesday, January 19th, 2016

A ESP8266 mains energy monitor project by Brian Dorey:  As the new solar logger did not have this functionality we decided to design a new data-logger that would measure not only the mains current usage but also keep track of the electric meter and gas meter so we can easily...

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Reverse engineering the ESP8266 WIFI-to-Serial port adapter

Friday, January 1st, 2016

Here's a video from electronupdate on reverse engineering the ESP8266 WIFI-to-Serial port adapter: Another very interesting bit of technology. The combination of so much functionality into such a small part is a real touch-stone as to where things are heading. A quick look at the antenna design to see if...

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ESP8266 WiFI LED controller hack

Wednesday, December 30th, 2015

Andreas Hölldorfer of ChaozLabs wrote an article detailing how he hacked the cheap WiFi LED controller: This pictures show the PCB. As you can see there are pins labeled as RX,TX,GND,3.3V. I simply connected an USB-Serial converter to the pins. The two other pins are GND and GPIO0. If you set a...

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Rediscovering the magic of wireless communication

Friday, December 25th, 2015

Ashish Derhgawen's article on rediscovering the magic of wireless communication: In this article, I will tell you the story behind one of the most important technological inventions of modern times - wireless communication. I will also describe some of my own experiments with high voltage spark transmitters and coherers! But...

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Souliss device ESP based combined with 3D Printing

Wednesday, December 9th, 2015

Juan has been working on a Souliss device ESP based project, that is available at Github: With this board we can control 3 monocolor led strips (or 1 RGB), can host multiple sensors and options to come by external modules or internal conectors, Im working on this modules now. For now...

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Posted in DirtyPCBs.com, wireless | No Comments »

Enter the Photon

Monday, December 7th, 2015

Peter Scargill writes: So, what differentiates this from say, something like an ESP-12 or similar boards? So this is a small WIFI-enabled controller, programmed in something that looks suspiciously like the Arduino language – this is course is deliberate to give it that familiar look and feel. But looks can be...

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ESP8266 weather station

Monday, November 30th, 2015

Dani Eichhorn's weather station project, that is available at Github:  Several ESP8266 hackers contacted me to finally publish the new WeatherStation code. Here it is. It is not yet working as smoothly as I want it to work but maybe some of you can help me getting rid of the nasty issues...

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Posted in wireless | 2 Comments »

ESP8266 MQTT client on RTOS

Wednesday, November 18th, 2015

Baoshi wrote a MQTT client for Espressif’s RTOS SDK: If you search MQTT and ESP8266 on the intraweb, most likely all hits can be traced back to the great work done by TuanPM. However Tuan’s code is based on Espressif’s NON-OS SDK. There has been some great debates about embedded...

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Posted in wireless | No Comments »

Spectrum analysis with RFM12B

Tuesday, November 17th, 2015

Martin Harizanov writes, "The comments to my last blog post got me thinking if I had chosen the right RFM channel at home, obviously if the channel is noisy that directly affects reception and increases the error rates. I use the default 868Mhz setting for the RFM12B/RFM69s at home and decided...

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Posted in wireless | No Comments »

DIY WiFi gas detector with text alerts

Wednesday, October 14th, 2015

Stefan over at Hackster.io has written an article detailing his DIY Wi-Fi gas detector that sends SMS alerts: Hey guys, back with another little project that I’ve been fiddling with for the past week. With kids around, every parent is thinking how to make their home safer for the little ones and...

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nodeLHC – ESP8266 development board

Monday, September 28th, 2015

Pedro Minatel shared us his ESP8266 development board project - nodeLHC: This board was developed at the Campinas Hacker Lab in Brazil during our weekly IoT meetings. This layout and schematic was developed by Leandro Pereira. The idea was to develop a easy to use board and to learn how to use...

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ESP8266 LED display

Thursday, September 24th, 2015

Evan writes: This is my proof-of-concept for using mqtt with the esp8266.  I saw this LED display sitting around and I couldn’t imagine why no one was using it, the answer was no one knew how to talk to it.  Easy, I think.  Looking at the board it’s just an...

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Posted in LEDs, wireless | No Comments »

ESP8266 remote controlled sockets

Wednesday, September 23rd, 2015

Rui Santos made a new project, an ESP8266 remote controlled sockets: In this project your’re going to build a web server with an ESP8266 that can control remotely any sockets (safely!). Project info at Rui's Random Nerd Tutorials site. Check out the video after the break. (more…)

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How to make two ESP8266 talk

Wednesday, September 9th, 2015

Here's a detailed tutorial on how to make two ESP8266 talk with each other from Rui Santos: How it works? You’re going to set one ESP as an Access Point (Server) and another ESP as a Station (Client). Then they’ll establish a wireless communication and the Client sends a message to the...

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