ESP32 WiFi Weather Station with a Nextion Display

Our friends at educ8s.tv uploaded a new video about how to build a ESP32 Wifi enabled weather station:

In this video, we are going to make this. It is yet another weather station project I know, but this time we use the new ESP32 chip! We also use the new BME280 sensor which measures the temperature, the humidity, and the barometric pressure. When we power up the project, it connects to the WiFi network, and it is going to retrieve the weather forecast for my location from the openweathermap website. Then it will display the forecast on this 3.2” Nextion Touch Display along with the readings from the sensor! The readings are updated every two seconds and the weather forecast every hour! As you can see, in this project we use the latest technologies available to a maker today! If you are a DIY veteran, you can build this project in five minutes. If you are a beginner, you have to watch a couple of videos before attempting this project. You can watch those videos by clicking on the cards that will appear during the video. Let’s start!

ESP32 WiFi Weather Station with a Nextion Display – [Link]

TSL2540 Ambient Light Sensor matches eye-response

TSL2540: Other Product Document (English)

ams (Graz, Austria) has posted details of the TSL2540, a very-high sensitivity light-to-digital converter. Evaluation kit is available:

The TSL2540 is a very-high sensitivity light-to-digital converter that approximates the human eye response to light intensity under varying lighting conditions and transforms this light intensity to a digital signal output capable through a 1.8V I²C interface. The ALS sensor features 2 output channels, a visible channel and an IR channel. The visible channel has a photodiode with a photopic Interferometric UV and IR blocking filter and the IR channel has a photodiode with an IR pass filter.

TSL2540 Ambient Light Sensor matches eye-response – [Link]

PcbDraw – KiCAD board into a nice looking 2D drawing

Convert your KiCAD boards into nice looking 2D drawings suitable for pinout diagrams. Never draw them manually again! [via]

Jan Mrázek created a Python script that takes a KiCAD board (.kicad_pcb file) and produces a 2D nice looking drawing of the board as an SVG file.

This small Python script takes a KiCAD board (.kicad_pcb file) and produces a 2D nice looking drawing of the board as an SVG file. This allows you to quickly and automatically create awesome pinout diagrams for your project. These diagrams are much easier to read than a labeled photo of a physical board or an actual KiCAD design.

PcbDraw – KiCAD board into a nice looking 2D drawing – [Link]

USB powered – PCB TeslaCoil

Daniel Eindhoven build a usb powered Teslacoil able to produce small sparks. The coil of the device is printed on the board!

A new and improved PCB spiral Teslacoil. This Teslacoil has etched windings on a print circuit board. It has a USB interface which also powers the coil. The resonance frequency is about 4MHz. It has a turns ratio of 1:160 with 6mil tracks for the secondary. The total trace length of the secondary is 25m.

USB powered – PCB TeslaCoil – [Link]

Making of a New Nixie Tube

Dalibor Farny shows us how he hand make new Nixie tubes on this interesting video!

The nixie tube is a vintage display device which had been used until 70s when it was replaced with LED displays. The complex knowledge of manufacture of nixie tubes literally died with tube factory’s engineers, glassblowers and machine operators. I discovered nixie tubes in 2011 and since then, I’ve devoted all my time to studies of nixie tubes and its manufacturing processes. After years of intensive work, with help of many people, I eventually succeeded and have revived the knowledge and equipment for production of nixie tubes.

Making of a New Nixie Tube – [Link]

Arduino Weather Station with DHT11 and BMP180

In the previous tutorial I showed you how to build a weather station using only the DHT11 sensor and I said the readings from this sensor is fairly accurate. In this tutorial, I will be using the DHT11 to measure only the humidity and BMP180 to measure pressure and temperature. That’s because its readings are more accurate than the DHT11 temperature readings.

Arduino Weather Station with DHT11 and BMP180 – [Link]

20 Segment Jumbo Size SPI BarGraph Display

Jumbo 20 Segment SPI (Serial) bar graph driver using 74HC595 serial to parallel converter IC and BC635 display driver transistor. This project is useful for application like Amusement machines, arcade gaming, voltage display, current display, pressure sensor display, temperature sensor display , process control equipment, battery condition monitor and many more. Each segment of display consist 10 LED Bargraph display. It is easy to view from long distance, and easy to control by Micro-Controller.

20 Segment Jumbo Size SPI BarGraph Display – [Link]

Acusis – array microphone for speech recognition

An echo-canceling, far-field, linear array microphone for speech recognition and voice communications.

Acusis is a simple-to-use, complete solution for improving the audio quality for your speech recognition or video communications project. It solves multiple audio issues in a single device that mounts on a TV or monitor and hooks up to your Mac, PC, or single-board computer with standard USB protocols.

Acusis – array microphone for speech recognition – [Link]

Spinduino – IoT Fidget Spinner

IoT Fidget Spinner with Bluetooth Low Energy and POV LED Display by Uri Shaked.

A smart, programable Fidget Spinner with the following features:

  • JavaScript programmable
  • 10-Pixel RGB PoV display (using APA102 LEDs)
  • Spin count / speed detection using a magnetic latch
  • Using Nordic Semiconductor nRF52832 chip
  • Bluetooth Low Energy (BLE) communication with smart phone / computer for controlling the display, reading the spin count and programming
  • Over-the-air firmware upgrades
  • Fully open-source

Spinduino – IoT Fidget Spinner – [Link]

4-port NanoHub – tiny USB hub for hacking projects

Muxtronics @ tindie.com sells their 4-port NanoHub board:

The NanoHub 4-port is a natural evolution of the original 2-port NanoHub – a truly tiny USB hub to use in the most cramped of spaces. Nanohub 4-port is bigger and better! Even though it boasts twice as many downstream ports (effectively tripling its usefulness; providing 3 extra USB ports instead of just 1), it is only 4mm wider (1/8″). Also, by popular request, ESD protection diodes are included on the input and output ports, meaning you can safely use the NanoHub 4-port with user-accessible ports, where you might zap the port contacts with static electricity. Lastly, the power traces have gotten a slight boost; you can now draw up to 4A on the output ports (combined, sustained).

4-port NanoHub – tiny USB hub for hacking projects – [Link]

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