Content of this blog

The author of this blog
This blog is written by Jos Verstraten, a Belgian/Dutch author. He wrote his first article on electronics, published in the Dutch magazine 'elektuur', at the age of twenty. From that moment on, writing about electronics has dominated his life.
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24M-8CH logic analyser tested
For € 7.80, you can buy an eight-channel logic analyser in China with a maximum sampling rate of 24 MHz and data storage of up to 800 Msamples, more than you ever need. We tested the hardware and software.
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AD584LH voltage reference module tested
A very accurate voltage reference is useful in the lab for checking your measuring equipment. With this PCB that is available for prices starting at € 8.00, however, something strange is going on. The complete PCB is much cheaper than the IC that is on it. We investigated this issue and found a strange thing.
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Aneng AN302 autoranging multimeter tested
For just over ten euros you can buy this ultra flat autoranging true RMS multimeter. It can measure just about anything except currents. How good is such a cheap meter? We tested all measurement functions and were quite satisfied.
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Aneng Type 180 multimeter tested
With its price of approximately € 4.50, this digital meter is undoubtedly one of the cheapest multimeters you can buy. The specifications are excellent: an accuracy of 0.8 % for DC voltages.
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Aneng V01A multimeter tested
With a price of about € 12.00, this automatic multimeter seems to be a nice device for the hobbyist. The accuracy is excellent and the device fits comfortably in your hand. A pity is that you can not measure voltages less than 0.8 V and that the input resistance is extremely low.
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Assortment of capacitors tested
Already provided with a nice assortment of resistors? Now it's the turn of the capacitors. After all, after the resistors, these are the parts that you use the most in daily practice. Here, too, you can make very economical use of a Chinese assortment.
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Assortment of resistors tested
One of the first things you should buy when setting up your hobby electronics lab are resistors. We ordered a cheap assortment with thousand 0.5 W carbon film resistors in China and evaluated the delivery and quality.
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BK-938 SMD soldering station tested
With the BK-938 you get a cheap second soldering iron for easily solder your SMD components on their copper surfaces. But is this soldering iron worth its twenty euros?
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DOB-6040A LED-array tested
You connect them directly to the 230 V power line, they give a lot of light, hardly get hot and they are cheap. Use these remarkable LED arrays in inventive light design!
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DPS3003 power supply tested
With three modules, which together cost less than € 45.00, you can create a small but very professional laboratory power supply that provides you with a voltage of up to 32.00 Vdc and a current of up to 2.000 A. Of course, the device works as a constant voltage and current source.
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DSN-DVM-368 digital voltmeter tested
At various Chinese mail order companies you can order the three-digit digital voltmeter module DSN-DVM-368 for less than three euros. With this module you can measure DC voltages up to 30.0 V.

DSO138 very cheap scope tested
Without a scope every electronics hobbyist is blind. However, a scope is not exactly cheap. JYE Tech has attempted to design the cheapest scope of all time. For about € 15,00 you can order a kit of the DSO138, a miniature scope with a bandwidth of 200 kHz and a sensitivity of 10 mv/div.
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DSO150 handheld scope tested
With its price of about € 25.00, its bandwidth of 200 kHz, its sensitivity of 5 mV/div and its time base to 10 ┬Ás/div, the DSO150 is a nice scope for anyone who starts out with electronics as a hobby.
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DSO188 matchbox scope tested
With its dimensions of 57 mm by 34 mm by 11 mm you can call Daniu's DSO188 a matchbox oscilloscope. If you think this device is nothing more than a funny, but useless toy you are wrong. It allows you to observe signals up to 100 kHz. We tested this miniature wonder of Chinese technology.
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E012 quadcopter tested
Does a drone seem nice, but are you hesitant to buy one because you doubt whether you can drive one? Buy an E012, a quadcopter that costs only thirteen euros and that will allow you to investigate whether you can master the art of driving a drone.
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FG-050 function generator tested
If you search long enough, you can buy this digital low-frequency function generator module for less than € 12.00. Built in a box you pay € 20.00. Nice prices for a generator that generates all basic signals up to 65.5 kHz. This module is worth an extensive test.
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FG-100 function generator tested
The FG-100 is a small digital function generator for low frequency applications offered for prices around € 30.00. The FG-100 generates sine waves up to 500 kHz and rectangle, triangle and sawtooth waves up to 20 kHz.
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FT-96 LED photo lamp tested
If you are involved in table-top or macro photography, you know how important good light is. It used to cost a lot of money and electricity, but now you buy three cheap LED photo lamps with even cheaper small tripods. We looked at the TF-96 LED photo lamp from Ulanzi.
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FY3200S function generator tested
The FY3200S from Feeltech delivers signals up to 24 MHz on two fully independent adjustable outputs. Besides the standard signals, this generator also delivers sweeps, electrocardiogram pulses, white noise, AM and FM. The built-in frequency/pulse counter can be used up to 100 MHz.
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G600 LCD microscope tested
When we were looking for a digital microscope for our lab we found the G600 from Mustool. A nice device with an excellent price/performance ratio.
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GD-SC02 pan and tilt WiFi camera tested
With the GD-SC02 you get a security camera for less than twenty euros. You can integrate the camera into your wireless WiFi network or connect it to your wired Ethernet. With the 'Guudgo' app, you can rotate the camera in any direction, view the HD images directly or save them in the cloud.
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Geekcreit FM Radio Kit tested
On several Chinese sites a kit of an FM radio with alarm clock is offered for a price of only € 8.50. We tinkered the device together and found it, as claimed, anything but suitable for an absolute beginner.
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Geekcreit LM317 power supply tested
A kit of a power supply that generates a stabilised voltage of 1.5 V to 12 V for less than nine euros? Search in Google for '220V DIY LM317' and you will see dozens of offers from the well-known Chinese online stores. We ordered from the cheapest supplier Banggood and tested this kit. Verdict: don't buy!
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Geekcreit XR2206 function generator tested
This function generator kit with an XR2206 is offered for about € 7.00. You will receive a kit of a function generator in a perspex housing with three potentiometers and two jumpers for setting the frequency and waveform. The frequency range goes from 1 Hz to 1 MHz.
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HC-SR04 ultrasonic module tested
With the HC-SR04 module, you can measure distances of up to 4.5 metres at a very low cost. The module is prepared for working with well-known microcomputer platforms such as the Arduino.
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HC-SR501 motion sensor tested
For just over € 1.50 you buy this motion sensor. You can detect every movement within a radius of up to seven meters. When motion is detected, the output becomes 'H', that allows you to control a lamp or alarm in a very simple way.
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Hiland M8 component tester kit tested
On the PCB is stated 'transistor tester', but that does this kit of about € 15.00 great injustice. With the M8 you can test almost all your components: resistors, potentiometers, capacitors, coils, diodes, LEDs, thyristors, triacs, transistors, FETs and MOSFETs. It can also be used to generate and measure frequencies.
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Hiland multiple output power module tested
With this € 6.09 priced kit, you can convert one supply voltage into stabilized supply voltages of +3.3 V, +5 V, -5 V, +12 V and -12 V. You can load each output individually up to 300 mA. We built and tested one kit.
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JDT2410 PWM power supply tested
For about € 7.00 you buy this small power supply. The output voltage is adjustable between 9 Vdc and 24 Vdc at a maximum current of 1 A. Ideal for feeding small circuits, DC motors and fans.
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KTNNKG wireless switch set tested
If you are satisfied with a very basic operation, this set offers the cheapest solution for wireless control of three loads up to 2 kW. For about € 15,00 you get one battery-powered wall-mounted transmitter and three mains-powered receivers with relay switches.
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Mayitr Power Regulator tested
The unique feature of this 230 V and 4,0 kW power regulator is that you can set the conductivity percentage of the triac on a separate panel with two push buttons between 0 % and 100 %, with an accuracy of up to 1 %.
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MDS8207 multimeter/oscilloscope tested
This handheld multimeter and oscilloscope from Mustool with a measuring range of up to 6,000 counts, an analogue bandwidth of 40 MHz and a price of less than 100.00 euros could well define a new standard for this type of portable meter.
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Metal detector kit tested
It seems so attractive! A kit that costs only four euros and allows you to detect metal objects in your walls. After all, for a Brennenstuhl metal detector you need to pay an approximate twenty euros. But does this Chinese device do what the maker promises?
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MK-168 transistor tester tested
The ability of a microcontroller to identify components was demonstrated by Markus Frejek on mikrocontroller.net in 2009. The MK-168 is one of the many Chinese devices that use this basic scheme. It is ready-to-use, battery-powered and built into a handy housing.
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Mustool MT77 multimeter tested
With its smartphone look and large screen, it looks very fashionable. The specifications and price are also attractive. So buy it? What a disappointment when it turns out that the specifications aren't right and you've bought a pig in a poke.
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Mustool MT92 multimeter tested
This hand-held multimeter is also known as Bside ADM92 and measures AC/DC voltages, AC/DC currents, resistances, capacitors, temperatures and frequencies with a readout of up to 6,000 or 9,999 counts. The cheapest supplier we could find offers this meter for only € 12.50.
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PS-1501A linear power supply tested
Looking for a cheap power supply we ended up with the PS-1501A, a power supply that is offered for prices from € 30.00 and that supplies 0 Vdc to 15 Vdc at 1 A. The specifications are very good! But are these correct? Unfortunately, what a disappointment!
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RC-5 temperature logger tested
The RC-5 is a temperature logger with NTC sensor. It measures from -30 °C to +70 °C with a resolution of 0.1 °C and an accuracy of ±0.5 °C. The internal memory can store 32,000 readings. You can buy an RC-5 for about thirteen euros.
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Ruideng 33V-3A panel meter tested
For just US$3.99 you can buy this digital panel meter, with which you can measure both the output voltage and the output current of a DC voltage source. We tested the meter and were very satisfied with the accuracy.
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S-150-12 power supply tested
This power supply costs about € 13.00 and provides a maximum current of 12.5 A at 12 Vdc output voltage. Ideal for feeding LED light strips en 12 V LED lamps. We tested the specifications of this power supply.
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Sonoff S20 WiFi Socket tested
With Sonoff's S20 WiFi Socket, you can turn any device in your home into an 'internet of things' device that you can turn on and off with your smartphone. This is not unique, but the price is. For less than ten euros you can order this WiFi socket on various Chinese sites.
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Sonoff WiFi Smart Switch tested
With this barely € 4.50 costing device you can switch on and off any mains operated device with a power of up to 2.3 kW via the internet. Thanks to the new 'Enable LAN' option, you can use the system also only with your WiFi network, without having to use the cloud.
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TC1 multi-function tester tested
Daniu's TC1 differs from the numerous low-cost microcontroller controlled component testers by its Li-ion battery, the possibility of testing zener diodes up to 30 V and the recognition of infrared codes. We tested the specifications and found a few very large measurement errors.
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TEMPer2 USB temperature logger tested
With a price of less than twenty euros, the TEMPer2 is one of the cheapest temperature loggers you can buy. A unique feature is that you can log without installing additional software. You can read the measurements directly into a text file.
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Tesla generator kit tested
Tesla generators has been appealing to hobbyists for decades. Construction kits of Tesla generators are for sale for ten to hundreds of euros. We tested one of the cheapest kits. For just over ten euros you can buy this mini Tesla generator as a kit.
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TM-902C thermocouple meter tested
A long range thermometer is a useful tool in the electronics lab. It allows you to check the temperature of components and heatsinks. But you don't use such an instrument that often, so it shouldn't be too expensive.
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TW-01 countdown timer tested
For a lot of timer applications, you don't need an accurate digital timer, but just an electromechanical model. With the TW-01 from Chinese Kerde, you can set a time between one minute and thirty minutes and you can switch 230 V and 10 A.
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Ultrasonic distance measurement kit tested
Based on the ultrasonic module HC-SR04 discussed elsewhere on this blog, a very cheap ultrasonic distance meter is offered as a kit with a range of 5.00 cm to 400 cm. We ordered this kit and tested its performance.
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USB Boost Cable tested
With this small power booster you can derive a supply voltage of 12 Vdc from a cheap 5 V power bank. According to the manufacturer, the device can supply 1 A and that for a price of just under three euros.
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W1209 temperature controller tested
The W1209 is a thermostat that closes or opens a relay contact when the temperature exceeds a trigger temperature. By means of three push buttons you can program seven parameters.
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XH-M229 ATX breakout board tested
Don't just dump your old desktop PC on the scrapyard! Probably there's an excellent functioning ATX power supply in it, which you can use in your hobby lab with this small breakout print.
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Yihua 938D SMD soldering tweezers reviewed
Ever tried to desolder a SMD resistor with your regular soldering iron? Not easy! With this special soldering tweezers from Yihua, which cost about € 45.00, this job becomes a piece of cake. And it's just as easy to solder that resistor back to your PCB.
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YS-5V1ASZD 5 Vdc power supply tested
Nowadays it makes no sense to design small 5 V power supplies yourself. For no more than € 2.25 you buy a YS-5V1ASZD that supplies 5 V DC voltage with a maximum current of 1 A. In this article we give a convincing test of this small powerful device.
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ZPB30A electronic load tested
The ZPD30A is an electronic load for testing your power supplies, batteries and accumulators in a fast and inexpensive way. Thanks to the microcontroller control, this device also measures the total capacity and the total delivered energy of a battery or accumulator.
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ZS-X4B PWM power regulator tested
With this PCB, which costs you about € 3.50, you can control the power to DC loads between zero and full load. The maximum voltage is 35 V, the maximum power 90 W.
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