Rui Cabral tipped us with his latest project. He writes:
Lately I’ve been testing a small 2.4″ TFT display PBC ILI9341 with touch and bought on ebay for less than 8euros!
This graphic display is an excellent solution for both small projects and for more advanced projects since it includes SD card connector to access stored images.
This display has a resolution of 240×320 RGB.
Experiments with 2.4″ TFT – [Link]
If prices of thermal imaging cameras seem to you to be high, but you´d like to take advantage of a graphic temperature displaying, then the TG165 is the right device for you for only 299EUR and limited time. Do not hesitate, this price is valid only in October!
Now for only 299EUR and limited time. Do not hesitate, this price is valid only in October! Infrared thermometer or infrared camera? A typical dilemma, which device to choose can be solved very simply – by a purchase of imaging thermometer Flir TG165!
Thermal imaging camera is a great thing for various industrial segments, as we described to you for example in our article „Even hidden faults can be found with FLIR thermal cameras”. Perhaps the only disadvantage of quality thermal cameras are their prices. Especially for a casual usage perhaps majority of us will consider the 1000+ EURO investment for such a device.
The price of this perfect device now dropped to 299EUR!
A good job can be also done by an IR thermometer but by its usage we´re missing a unique feature of visual imaging of a temperature distribution in a given device. In reality perhaps nobody is able to make for example 3600 measurements ( 60x60px) within few seconds and consequently to make an idea how it looks with a temperature in a given device.
From this point of view – the novelty of company Flir – TG165 is a unique device intended for everyone, who wants to have a visual idea about temperature for an affordable price. TG165 is a combination of a quality IR “point” thermometer (24:1) with an IR camera with a new Flir „LeptonR“ chip.
Without a useless “going around” it can be straightly said, that the imaging functionality of TG165 has a fix-set range and that it´s not possible to exactly determine temperature from a displayed image (except a middle of the image, where it is measured exactly by a central thermometer). However, usually in praxis it doesn´t matter at all, because such imaging is sufficient to discover warmer/ colder places and consequently – it´s possible to focus a center of a measured field on a given “suspected” place.
In result, we get a device, which is in praxis fully usable for a visual inspection of distribution boxes, motors, compressors, PCBs and other for a roughly half price of a usual thermal camera.
Also beneficial is a double (diverging) laser, which visually shows a measured area – independently of a distance from a measured object. Professional construction and a sturdy construction is also underlined by a fact, that the device is designed to withstand a fall from a 2m height.
Detailed information will provide you the TG165 brochure and datasheet TG165.
FLIR TG165 for only 299EUR – it is a bargain! – [Link]
RF Based DC Motor Direction Controller project provides an easy way to control the direction of your DC Motor connected to the receiver. This project has been design around HT12E and HT12D encoder / decoder chips from Holtek. With jumper selectable address on the receiver and transmitter we can control multiple motors in one area without interference with one remote.
RF Remote DC Motor Direction Controller – [Link]
RF Based DC Motor Direction Controller project provides an easy way to control the direction of your DC Motor connected to the receiver. This project has been design around HT12E and HT12D encoder / decoder chips from Holtek. With jumper selectable address on the receiver and transmitter we can control multiple motors in one area without interference with one remote.
by acrobotic @ instructables.com:
This Instructable will show you the steps needed to get started with the ESP8266 using a fantastic little development board for the ESP-12E module. The board includes everything needed including a USB to Serial adapter, surface-mount LED, and voltage regulator. In addition, it is easily mountable on a breadboard for developing your own IoT project(s)!
The main goal of the Instructable is to cover all the different options you can use in terms of firmware for developing applications that use the ESP8266 to connect to the web. The content, although available, is scattered throughout various sites around the web thus we decided to condense it in one place.
Get Started with ESP8266 Using AT Commands, NodeMCU, or Arduino (ESP-12E) – [Link]
by EasyIoT @ instructables.com:
In this tutorial we will show how to build ESP8266 DS18B20 temperature logger connected to EasyIoT Cloud.
Materials:
ESP8266 module
DS18B20 temperature sensor
4.7 K esistor
ESP8266 DS18B20 Temperature Sensor – Arduino IDE – [Link]
Electrical accidents are rapidly increasing especially electric line repairs incident due to the lack of communication and coordination between the maintenance personnel and the electric substation staff. The password based circuit breaker device could just be the solution as only the lineman could reliably control the circuit breaker to avoid miscommunication. The system requires a password to turn ON/OFF the circuit breaker as needed. It is entirely controlled by 8051 family microcontroller specifically the SST89E54RDA-40-C-PIE, an 8-bit microcontroller that is a member of the Flash Flex family.
The circuit consists of 8051 series controller, 4×3 keypad, LCD, relays and two loads. LCD data pins are connected to port1 and control pins RS, RW, EN pins are connected to P3.7, P3.6 and P3.5 respectively. The keypad is connected to port 2 of the controller while the LCD is used to display the information. In addition, the lamp and motor are connected to P3.0 and P3.1 through the relays. These are used to indicate circuit breaker state. Moreover, BC547 transistors are used to drive the relays where 5V relays are used to drive the AC loads. While giving the connections, there should be no common connection between AC and DC supplies. Furthermore, a 5V power supply is used to provide regulated 5V DC to the controller.
This project distinctly provides security and convenience to electrical maintenance personnel. This may help avoid fatal accidents to line man, which can be used in establishments such as building offices, hotels, industries and houses. It is a simple project with commonly available components that helps save life.
Password Based Circuit Breaker – [Link]
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 for everybody in general. One of the most dangerous thing in the house can be the stove and since we have a gas-powered one, I always wondered why there are no simple gas detectors that can be used around the stove, just to alert instantly that gas may be leaking.
Well, that was the moment when I decided to build one of my own. Having a Particle (Spark) Photon lying around, I decided to use that as a foundation for the project. I like the fact that they are very small and cheap, and also can be flashed over the Wi-Fi. Having that settled, I needed the gas sensor and some kind of alerting system.
DIY WiFi gas detector with text alerts – [Link]
by Maurizio @ dev.emcelettronica.com:
Using simple wires to measure signals with the oscilloscope would result in unreadable plots on the scope, the main reason being the noise coupled onto the “probe” itself. The first line of defense against that would be to use a coaxial cable as a probe, which would prevent external noise coupling.
An unwanted deterioration of the measured signal is due to the capacitive loading that such a piece of cable adds to the signal. An equivalent schematic of an IC to IC signal is illustrated in figure 1.
Compensation of Oscilloscope Probes – [Link]
by Susan Nordyk:
Housed in a 5.2×3.8×1.1-mm package, Bosch Sensortec’s BMF055 9-aix sensor combines an accelerometer, gyroscope, and magnetometer with a 32-bit MCU to enable easy programming and customization. It can be used by designers creating advanced application-specific sensor fusion algorithms for robotics, gaming, remote controls, navigation systems, drones, and human interface devices for IoT projects.
The BMF055 system-in-package integrates a triaxial 14-bit accelerometer, a triaxial 16-bit gyroscope with a range of ±2000 degrees per second, and a triaxial geomagnetic sensor. Based on a 32-bit ARM Cortex M0+ core running at up to 48 MHz, the Atmel SAM D20 microcontroller employed by the BMF055 provides in-system programmable flash memory and a rich set of peripherals and interfaces.
9-axis motion sensor and MCU reside in tiny package – [Link]
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