Author Archive

Video converter VP-724DS

Video switchers and converters are indispensable tools for video professionals.Video switchers and converters are essential tools in the realm of audiovisual production, broadcasting, and multimedia content creation. I have worked on the field and own devices on this category myself. Video switchers, also known as vision mixers or production switchers, are extensively used in live

UT60BT multimeter review

I have been interested in getting a multimeter that can connect to a smart phone for some time. I write on multimeters that connect to a smartphone in my blog already in 2014. I finally bought one: UT60BT. This UT60BT multimeter is feels reliable and feature-packed tool. This meter connects to your smartphone via Bluetooth,

Test probe clips for multimeter

I got from sale some probes for multimeter: Universal Multimeter Test Hook with Miniature Plane Type IC Clip and Probe Needle Versatile for High Pressure Differential Applications Accurate Readings and Secure Connectivity One end those probes have has a small clip that works with small electronics. The other end fits normal multimeter probes (2 mm

Soldering gun tech and hacks

A soldering gun is an approximately pistol-shaped, electrically powered tool for soldering metals using tin-based solder to achieve a strong mechanical bond with good electrical contact. The tool has a trigger-style switch so it can be easily operated with one hand. Soldering guns are often used where more heat is needed than from the lower-power

Modbus RTU Relay Module

Here is a Modbus RTU Relay Module I got some time ago, but waited for time to test it. It is a Modbus 2-channel relay module is expected to be very useful device for making something Modbus compatible. It should be suitable for industrial control equipments and/or component in IoT applications. Description: Specification: Power Source:

XY-MD02 Temperature and Humidity Sensor

I had ordered months ago a XY-MD02 Temperature and Humidity Transmitter Detection Sensor Module Modbus SHT40 Temperature Sensor from some Chinese source (it is available from many on-line shops). Now I had finally some time to test it. Parameters: Product name: temperature and humidity transmitter DC power supply: DC 5V-30V Output signal: RS485 signal Temperature

USB plugs in both ways

You don’t need to always have USB C to be able to plug the connector both ways. Here is an USB A – microUSB cable where both ends plug in both ways. Some kind of USB C wannabe? Here you see a design for a USB-A connector that’s fully reversible. It uses a very thin

Kemo LED tester

Here is a look at old KEMO M087 LED tester module (the original M087 is discontinued product but there is a newer different looking M087M product. With the aid of this test module it is made possible to carry out tests with all kinds of light emitting diodes in order to check function, brightness, colour