In this article we will cover exactly what Blynk is, how it works, and provide two short example projects on different uses of the service with NodeMCU and Raspberry Pi development boards. It has never been easier to start developing smart objects using microcontrollers, and IoT devices have quickly grown in popularity over recent years. One area which can pose a problem for the uninitiated is coding and networking. The workflow is fast: The app then sends an authorization token via email for connecting to your device over the Blynk server. Control elements are called Widgets: Also notable are widgets that add features, like automatic posting to Twitter, and custom notifications. The app gives you a balance of 2, to play with, with the option to buy more if needed.
ESP8266 WiFi Module
For booting and core functions. Up to 16 MiB of external flash are memory-mapped onto the CPU code space, supporting 8-bit, bit and bit access. Code execution is supported.
The 2 players automatically win and lose so their scores show the hours and minutes. All the parts are easily available on eBay and the software code is free! The clock has lots of different display modes to choose from: Pong Clock Time written in words, e. My clock in the video is made with the 3mm green displays.
Make sure you get the newer version of the display which is based on the Holtek HT C chip.
ESP8266 Thing – Dev Board (with Headers)
This module has a powerful on-board processing and storage capability that allows it to be integrated with the sensors and other application through its GPIOs. In this tutorial we can see how to get started with the ESP Wi-Fi module, configure it, and verify that there is communication established between the module and another device without using a ftdi chip. Upload Bareminimum sketch from examples to arduino this is to make sure that there are no other programs running on arduino and using serial communication channel.
AT firmware is compatible with the Arduino IDE, so we are going to use this firmware for this tutorial. Connect ESP as per the above circuit.
Three of the documents used most frequently by the author are ESP Quick Start Guide, version , ESP SDK Getting Started Guide, version , and ESP AT Instruction Set, version These three, along with several others, are included in the zip file available for download via the button below. RedBoard Hookup Guide March (4.
Making link to separate article on installing firmware easier to notice. Travis Poppe has a 3-D printed case for this you can download and print: It can be as simple as hooking up four wires, or many more wires, or even making a breadboard prototype: ESP to RS on a breadboard. Serial Drivers for the development module you choose. The development module version has a built-in USB-Serial adapter that can be used for debugging and loading firmware, and also gives a convenient way to power the module.
The ESP32 adds support for Bluetooth, but the firmware we will be using currently does not make use of it. The only real reason to use it is that Zimodem for ESP32 will be built using standard RS signals, while the Zimodem build for ESP has inverted RS signals for Commodore computers, and will require some additional setup to make work on non-Commodore machines. However, you will need more hardware to program it and power it, so I just stick with one of the development boards that has USB built in.
It actually cost me more to order an ESP-1 plus the USB programming adapter than to buy one of the devkits with everything built in.
SparkFun WiFi Shield – ESP8266
The Arduino Web Editor is hosted online, therefore it will always be up-to-date with the latest features and support for all boards. Follow this simple guide to start coding on the browser and upload your sketches onto your board. This also provides power to the board, as indicated by the blue LED which is on the bottom of the Arduino Nano 2.
Jun 15, · I will have to read the hookup guide more closely. I “grounded” the DTR pin to see if I could get the ESP Thing to go into boot loader. Upon removing the ground connection to DTR, the ESP Thing was reset and started the program, no boot loader.
Anti-static wrist strap Driver Recent versions of Linux have the driver pre-installed. Users of other operating systems may find drivers here. You should notice a new ttyUSB is added after you connect the cable. Precautions Never work on a live circuit! There is a possibility you could damage your computer, some other property, injure or even kill yourself!
In no way does this paragraph convey all of the various precautions one should take when working with electricity and electronics. Please read the entire article before you begin to modify the cable. Wear an anti-static wrist strap.
SparkFun Micro OLED Breakout (Qwiic)
Read an introduction on what is Arduino and why you’d want to use it. Using and installing Arduino Libraries. Need to add a new board to your Arduino Software? Install the relate core and manage it. Advice on what to do if things don’t work. For a complete list of Guides visit the Foundations section, where you will find in-depth knowledge about the principles and techniques behind the Arduino platform.
Solder the right-angle male headers to the Pro Mini so that you can connect it to the FTDI Basic. Then, connect the USB cord to a computer or a USB wall charger.
Like us and get updates! We tend not to spam: What is the ESP ? Read some older posts: Flashing , Connecting a relay , Spectrum Analyzer. It has a lot of advantages which were described in those posts but some disadvantages as well such as memory problems and firmware bugs which the average user cannot resolve. As always, in order to try a new method I must decide on a new project which will encourage me to deal the new method with enthusiasm. The project I decided to build was a new code for the Water heater project posted here a while ago.
Reviewing the old post, I found its code more or less a “proof-of-concept” code, where the emphasis was on the hardware. The project description in a few bullets: A website consists of a manageable SQL database with the schedule of the water heater with a main page for the user.
ESP8266 – Easiest way to program so far (Using Arduino IDE)
See Heatpump monitor development repo 3. It fits into a project we are more recently part of here in North Wales called CydYnni by EnergyLocal where households within the boundary of the substation get cheap electricity when a local community hydro is running. The wifi pixel could become a nice platform for a ambient home energy indicator.
Getting Started with NodeMCU Board Powered by ESP WiSoC Since ESP is now so popular, I’ve recently bought a NodeMCU board to try it. I selected this board because the latest version of the board is breadboard-friendly, integrates a USB to serial chip, and it can be powered by a simple USB to micro USB cable.
Like any microcontroller, it can be programmed to blink LEDs, trigger relays, monitor sensors or automate coffee makers. With an integrated WiFi controller, the ESP is a one-stop shop for almost any internet-connected project. To top it all off, the ESP is incredibly easy to use; firmware can be developed in Arduino and uploaded over a simple serial interface. We lovingly call it the “Thing” due to it being the perfect foundation for your Internet of Things IoT project.
The Thing does everything from turning on an LED to posting data with phant. The pins are broken out to two parallel, breadboard-compatible rows. The ESP ‘s maximum voltage is 3. It’s cost-effective and works really well! If you need to connect a more sensitive antenna, or need to route outside an enclosure, a U.
BerryIMU v2 – An accelerometer, gyroscope, magnetometer and barometric/altitude sensor
The first thing to do is update the code with your wireless network settings. On the Adafruit Feather Huzzah we use pins 4 and 5. The IP address is then printed to the serial console. To set it to the correct timezone, modify the below line with timezone offset. This is done in allocateRam.
This week on the Workbench Podcast; Smitty KR6ZY joins George and Jeremy to talk the BitX The BITX40 is a popular $60 40M 7W SSB transceiver “kit” available.
Now, thanks to more information and better tools, the flashing process is significantly easier, and SDK v2. Specifically, the following improvements will be addressed: You may want to peruse that article for some worthwhile background information. The Flashing Circuit An improved flashing circuit for the ESP module is shown in the following schematic diagram; several changes have been made to the original design: Some converters do not provide sufficient current to properly drive the ESP , especially when it is in the Wi-Fi transmitting mode.
A separate, well-filtered and regulated 3. Capacitors C1 and C2 have been added to provide noise reduction on the power bus. These changes do not indicate that the original flashing circuit was nonfunctional; the fact is that it did work for the author and for many other users.