I needed a motion detector for Arduino. I saw a cheap Microwave Radar Induction Switch Human Motion Sensor Module at DX (similar also available at Banggood at pack of 5). It advertises High Sensitivity for Arduino, Long Sensing Distance, Wide Sensing Angle for Detecting Moving Objects. Using this is a microwave sensor module that specifically →
I got this “Hakko 191″ soldering iron temperature meter from Banggood some years ago. It is not available there but you could find similar devices from eBay etc.. According to Hakko official pages the model 191 TIP THERMOMETER has been discontinued maybe years ago. This is most probably some Chinese clone of the device because →
I got a cheap DIY Metal Measure Kit Electronic DIY Soldering Exercise Board with the following specifications: Model: MDS-60 Working voltage: DC3-5V Standby current: ≤ 5mA Working current: ≤40mA Measure depth: ≤ 60 mm Measure alarm mode: sound, light PCB size: 86 x 61mm There was a just the circuit board and some components on →
Last year I made a posting on Cheap fiber optic visual fault locator. It told about 1mW 5KM Red Light Pen Visual Fault Locator Fiber Optic Laser Cable Tester Meter puts out highly visible red light into a fiber optic cable that has ST, SC and FC optical connectors.The universal fiber connector worked well with single-mode →
I wanted to add an AC voltage meter to my electronics lab variac transformer output (0-275V AC). I decided to get a cheap Machifit AD16-22V 22mm Digital AC Voltmeter AC 20-500V Voltage Meter Gauge Digital Display Indicator with the following Specification: Model AD16-22V Mounting hole 22mm Voltage AC 20-500V Class of safety protection IP65 Color →
I got several LEXXA 7W LED-VARAVALO bulbs in hoping to replace some aging LED light bulbs with new ones that have a bonus feature: They have an internal battery that allows them to output light even when the mains power is turned off. Those were available cheaply from Finnish shop Motonet (bulbs with pretty similar →
Just received those Potato chips that work like classic TTL logic but up to ~1GHz. Hopefully they will work on my TDR circuit. I should try the chip in this →
I needed some connectors for quick electrical circuits prototyping. I saw this 20Pcs CH2 Quick Wire Connector Terminal Block Spring Connector pack at very low price of €1.37. So I ordered them to see if they are any good for nay use. At least they should be OK for low voltage low current circuits if →
I decided to replace my aging Zyxel and Netwjork 100 Mbit/s Ethernet switched with new gigabit models. I decided to get two ZyXEL GS-108S v2 Media Switch as replacement for those. The Zyxel GS-108S v2 10/100/1000 Mbps switch is designed to provide reliable high-performance media network connectivity – that’s what I need. The Zyxel GS-108S →
Have you ever wondered about how safe your place or position is regarding electromagnetic and magnetic fields? Then here is your chance to find out. Everyone is exposed to a complex mix of weak electric and magnetic fields, both at home and at work, from the generation and transmission of electricity, domestic appliances and industrial →