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Posts Tagged ‘IoT’

trigBoard – Ultra low power ESP8266 IoT platform

Wednesday, November 7th, 2018

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...

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Posted in wireless | No Comments »

App note: How a SIMO PMIC enhances power efficiency for wearable IoT designs

Sunday, October 28th, 2018

App note from MAXIM Integrated on very compact PMIC using only single inductor to drive three independent switching regulators. Link here Small form factor and minimal power loss are key criteria for internet of things (IoT) hardware, particularly wearables. Meeting these criteria typically involves some tradeoffs. For example, to meet...

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Povon home energy monitor part 1, 20 channel system

Thursday, October 25th, 2018

Coyt Barringer documented his home energy monitor project called POVON. This first part of a series will detail the 20 Channel sub-metering hardware: Our initial goal was to monitor power consumption in different parts of the house, and we quickly realized every household circuit would need to be monitored. After...

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Posted in DIY, how-to | No Comments »

uMesh – A self-contained, battery operated ESP32 module

Tuesday, October 23rd, 2018

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...

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Posted in PCBs, wireless | 2 Comments »

Wyostat: Open source Thermostat Pt. 1

Thursday, August 2nd, 2018

Kevin has been working on building his own thermostat, that is available on github: Does the world need another connected thermostat? When my thermostat went on the blink last winter, I looked at Nest, and Ecobee, and the other me-too thermostats, and I decided I would rather build my own....

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Posted in hacks, open source | No Comments »

Ethernet Relay board

Wednesday, June 27th, 2018

Boris Landoni from Open Electronics writes about a new open source project Ethernet Relay board: The project we are introducing in this article wants on to take on that task by creating, through dedicated connections, the possibility to remotely control your entrance gate, your fish tank, the garden lights, the...

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Posted in open source | 1 Comment »

App note: Workflow for an IoT product

Sunday, December 17th, 2017

ON semiconductor's IoT device development process. Link here (PDF) In this application note a complete list of process steps is described in order to develop a specific system in the IoT environment. In order to make the description more practical the PIR sensor alarm example is used.

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YouTube channel IoT view counter

Tuesday, June 27th, 2017

Kenneth Finnegan built this YouTube channel IoT view counter, inspired by Becky Stern’s IoT counter: I've wanted an Internet connected read-out for some time now, inspired by the awesome shadow box IoT projects Becky Stern has been doing (weather, YouTube subscribers). I'm certainly not to the same level of packaging as...

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Posted in DIY | No Comments »

AD9834 and the IoT beacon

Tuesday, July 19th, 2016

m0xpd writes: I've been playing with a new RF generator for the IoT beacon... Actually, I do myself a disservice, because I've done rather more than just play with the RF generator. First, I've replaced the little USB to serial dongle which I used to program the original system and built...

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Posted in RF | 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 »

Adding a USB power port to a switch for IoT

Tuesday, December 29th, 2015

Jesus Echavarria wrote a how-to on adding a USB power port to a switch: I want to start some projects with Arduino and IoT, so the first things I need is an Arduino board, an Ethernet shield and a switch to connect it to the net. Also I need a power...

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Posted in hacks | 1 Comment »

Control your Arduino over the Internet using Blynk

Saturday, December 26th, 2015

John Boxall from Tronixstuff has written an article on using Blynk with Arduino: There are many ways of remotely-controlling your Arduino or compatible hardware over the Internet. Some are more complex than others, which can be a good thing or a bad thing depending on your level of expertise. Lately we’ve become...

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Posted in Arduino, tutorials | No Comments »

Soldering iron + Nodemcu = IoT device

Friday, September 4th, 2015

Vegard Paulsen blogged about his soldering-iron #IoT project: My trusty old soldering-iron recently got an upgrade! With the help of a NodeMCU. a RGB-LED it now reports the set temperature to the #IoT Thingspeak.com server through WIFI. It also sends me Prowl messages on my Iphone when I forget to...

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Posted in Arduino, DIY, wireless | No Comments »

Moteino IoT sprinkler controller automation

Monday, August 31st, 2015

Felix of LowPowerLab writes: Another node type is now available on the Gateway automation interface: a sprinkler controller. This is achievable through a board I designed to be able to control many outputs. I call this board IOShield and it features two 74HC595 serial to parallel shift registers. The IOShields...

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Power Meter pulse logger with ESP8266 running NodeMCU

Monday, May 11th, 2015

Patrik Thalin writes: This device is installed in my home to monitor the usage of electricity. It counts the pulses from the meter and produces a log file with number of pulses and a time stamp that can later be analyzed. The hardware is quite simple. The NodeMCU development kit...

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Posted in wireless | 1 Comment »

IoT with ESP8266 + NodeMCU firmware

Wednesday, April 29th, 2015

@PixelatedPic tweeted, "IoT with ESP8266 + NodeMCU firmware and couple of Lua :) its alive!"  

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Posted in hacks, wireless | No Comments »

IoT Arduino vending machine

Friday, April 3rd, 2015

Kristian Lauszus writes, "In this blog post I will describe a IoT (Internet of Things) Vending Machine that I built quite some time ago with a friend of mine Sigurd Jervelund Hansen. At Sigurd’s dorm room they got hold of an old vending machine free of charge, as it did not...

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Posted in Arduino, R-Pi | 1 Comment »

Introducing ESPToy 1.2 (with Lua Firmware)

Thursday, April 2nd, 2015

Ray Wang from RaysHobby has written an article on his ESPToy 1.2, a ESP8266 development board based on the Lua firmware: A little while back I released the very first version of ESPToy — a ESP8266 Development Board with a few useful on-board components like color LED, button, and temperature...

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Posted in Arduino, wireless | No Comments »

Arduino compatible LightBlue Bean adds Node-RED support

Sunday, March 29th, 2015

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Posted in Arduino, R-Pi, RF, wireless | No Comments »

First impression on HLK-RM04 serial-to-wifi module

Wednesday, September 3rd, 2014

Ray Wang wrote a blog post review of the Hi-Link HLK-RM04 Serial-to-WiFi module:  It's a pretty easy-to-use and low-cost solution to add WiFi capability to Arduino or similar microcontroller boards. Basically it allows you to receive/send Ethernet buffers through serial RX/TX pins. Programming wise, it's similar to using the standard Arduino...

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Posted in Arduino, wireless | 1 Comment »

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