The PeakTech 1094 two-pole voltage tester is a reliable and practical tool for measuring voltages up to 400 V. It uses LED indicators to display voltage levels at 12 V, 24 V, 50 V, 120 V, 240 V, and 400 V. The device supports both AC and DC voltage measurements and automatically detects and displays polarity when measuring DC voltages – no manual switching between AC and DC is required.
This tester operates without batteries, ensuring it is always ready for use, even after extended periods of inactivity. With its IP54 protection rating, the PeakTech 1094 is robust and resistant to dust and splashing water, making it suitable for use in both indoor and outdoor environments.
Specifications
DC Voltage (max.)
400 V
AC Voltage (max.)
400 V
Over voltage category
CAT III 400 V
Accuracy
-30% to 0% of the measured value
Voltage test
Automatically
Polarity check
Entire measuring range
Range selection
Automatically
Response time
<0.1s
AC Voltage frequency range
50/60 Hz
Dimensions
223 x 40 x 32 mm
Weight
95 g
Downloads
Manual
The PeakTech 1265 is an affordable 30 MHz 2-channel digital storage oscilloscope with a high-resolution TFT color display and extensive additional functions. It has a sampling rate of up to 250 MS/s and convinces with its high quality and easy handling with the best price/performance ratio. To quickly display each incoming waveform, simply press the Autoset key and the oscilloscope itself searches for the best possible display. With Autoscale, however, the scaling of the time base can be adjusted in a user-friendly manner. This oscilloscope has a VGA output for displaying the oscilloscope display on an external monitor or projector.
Features
2-channel oscilloscope with 30 MHz analog bandwidth at max. 250 MS/s sampling rate
8 inch (20 cm) TFT color display with 800 x 600 pixels
LAN, USB host, USB device & VGA interface
Autoset function for user-friendly operation
Recording length of max. 10,000 points
Automatic measurement modes, XY mode and FFT function
Specifications
Bandwidth
30 MHz
Channels
2
Screen size (TFT)
8' (20 cm)
Resolution
800 x 600 Pixel
Display Type
Color-TFT
Sampling 1 CH
250 MS/s
Sampling 2 CH
125 MS/s
Hor. scale max.
100 s/div
Hor. scale min.
5 ns/div
Memory depth
10,000 Points
Rise Time
< 14 ns
Vert. resolution
8 Bit
Vert. scale max.
10 V/div
Vert. scale min.
2 mV/div
Interfaces
1x USB, 1x LAN, 1x VGA
Mains voltage
110/240 V AC; 50/60 Hz
Included
PeakTech 1265 Oscilloscope
USB cable
Software CD for Windows
Power cord
2 probes
BNC cable
Carrying case
Manual
Downloads
Software
Datasheet_DE-EN
Datasheet_FR
Datasheet_IT
Datasheet_ES
The Elektor Super Servo Tester can control servos and measure servo signals. It can test up to four servo channels at the same time.
The Super Servo Tester comes as a kit. All the parts required to assemble the Super Servo Tester are included in the kit. Assembling the kit requires basic soldering skills. The microcontroller is already programmed.
The Super Servo Tester features two operating modes: Control/Manual and Measure/Inputs.
In Control/Manual mode the Super Servo Tester generates control signals on its outputs for up to four servos or for the flight controller or ESC. The signals are controlled by the four potentiometers.
In Measure/Inputs the Super Servo Tester measures the servo signals connected to its inputs. These signals may come from for instance an ESC, a flight controller, or the receiver or another device. The signals are also routed to the outputs to control the servos or the flight controller or ESC. The results are shown on the display.
Specifications
Operating modes
Control/Manual & Measure/Inputs
Channels
3
Servo signal inputs
4
Servo signal outputs
4
Alarm
Buzzer & LED
Display
0.96' OLED (128 x 32 pixels)
Input voltage on K5
7-12 VDC
Input voltage on K1
5-7.5 VDC
Input current
30 mA (9 VDC on K5, nothing connected to K1 and K2)
Dimensions
113 x 66 x 25 mm
Weight
60 g
Included
Resistors (0.25 W)
R1, R3
1 kΩ, 5%
R2, R4, R5, R6, R7, R9, R10
10 kΩ, 5%
R8
22 Ω, 5%
P1, P2, P3, P4
10 kΩ, lin/B, vertical potentiometer
Capacitors
C1
100 µF 16 V
C2
10 µF 25 V
C3, C4, C7
100 nF
C5, C6
22 pF
Semiconductors
D1
1N5817
D2
LM385Z-2.5
D3
BZX79-C5V1
IC1
7805
IC2
ATmega328P-PU, programmed
LED1
LED, 3 mm, red
T1
2N7000
Miscellaneous
BUZ1
Piezo buzzer with oscillator
K1, K2
2-row, 12-way pinheader, 90°
K5
Barrel jack
K4
1-row, 4-way pin socket
K3
2-row, 6-way boxed pinheader
S1
Slide switch DPDT
S2
Slide switch SPDT
X1
Crystal, 16 MHz
28-way DIP socket for IC2
Elektor PCB
OLED display, 0.96', 128 x 32 pixels, 4-pin I²C interface
Links
Elektor Magazine
Elektor Labs
With 20+ Practical Projects in Logic and Circuit Design
This book is a practical guide to digital electronics, covering the essential components of modern digital systems: number systems, logic gates, Boolean algebra, combinational and sequential logic, and more.
Through more than 20 structured projects, you’ll design and build digital systems using real-world components such as logic gates, multiplexers, decoders, flip-flops, counters, and shift registers. The projects range from basic LED logic circuits to digital locks, display systems, traffic light controllers, and timing-based designs.
Selected projects introduce the use of tools such as CircuitVerse for circuit simulation, while several designs make use of 74HC-series logic devices, commonly used in digital hardware prototyping.
Inside, you’ll find:
Clear coverage of number systems and binary arithmetic
Logic gate fundamentals and universal gate implementations
Step-by-step projects using flip-flops, counters, and registers
Real-world design with 74HC-series logic chips
Techniques for designing combinational and sequential systems
This book takes a design-first, application-driven approach to digital electronics—built around working circuits, tested logic, and hands-on experimentation.
Master digital electronics – the hands-on way!
This bundle includes the book Learning Digital Electronics, featuring 20+ practical projects in Logic and Circuit design, as well as a 100-piece kit – so you can start building logic circuits, counters, displays, and more right away.
Learning Digital Electronics (Book)
This book is a practical guide to digital electronics, covering the essential components of modern digital systems: number systems, logic gates, Boolean algebra, combinational and sequential logic, and more.
Through more than 20 structured projects, you’ll design and build digital systems using real-world components such as logic gates, multiplexers, decoders, flip-flops, counters, and shift registers. The projects range from basic LED logic circuits to digital locks, display systems, traffic light controllers, and timing-based designs.
Selected projects introduce the use of tools such as CircuitVerse for circuit simulation, while several designs make use of 74HC-series logic devices, commonly used in digital hardware prototyping.
Inside, you’ll find:
Clear coverage of number systems and binary arithmetic
Logic gate fundamentals and universal gate implementations
Step-by-step projects using flip-flops, counters, and registers
Real-world design with 74HC-series logic chips
Techniques for designing combinational and sequential systems
This book takes a design-first, application-driven approach to digital electronics—built around working circuits, tested logic, and hands-on experimentation.
Learning Digital Electronics (Kit)
This kit has been specially developed to complement the book "Learning Digital Electronics". Since all necessary components are included, you can complete every practical project in the book directly.
Kit contents
2x 74HC08 AND gate chip
2x 74HC00 NAND gate chip
1x 74HC86 XOR gate chip
1x 555 timer chip
1x 74HC161 counter chip
1x 74HC164 shift register
1x CD4511 7-segment decoder
1x CD4027 JK flip-flop
1x BC337 NPN transistor
1x KPS-5161 7-segment common-cathode display
1x Light dependent resistor (LDR)
4x 10 KΩ resistors
8x 1 KΩ resistor
2x 47 KΩ resistors
1x 100 KΩ resistor
4x 2.7 KΩ resistors
1x 5.6 KΩ resistor
1x 150 KΩ resistor
1x 10 μF capacitor
2x 0.01 μF capacitor
2x 100 nF capacitor
8x Small red LED
1x Small green LED
1x Small orange LED
4x Pushbutton switches
1x Active buzzer
1x Battery holder for 3x AA batteries (batteries not included)
1x Breadboard
40x Male-to-male jumper wires (length: 200 mm)
With 20+ Practical Projects in Logic and Circuit Design
This book is a practical guide to digital electronics, covering the essential components of modern digital systems: number systems, logic gates, Boolean algebra, combinational and sequential logic, and more.
Through more than 20 structured projects, you’ll design and build digital systems using real-world components such as logic gates, multiplexers, decoders, flip-flops, counters, and shift registers. The projects range from basic LED logic circuits to digital locks, display systems, traffic light controllers, and timing-based designs.
Selected projects introduce the use of tools such as CircuitVerse for circuit simulation, while several designs make use of 74HC-series logic devices, commonly used in digital hardware prototyping.
Inside, you’ll find:
Clear coverage of number systems and binary arithmetic
Logic gate fundamentals and universal gate implementations
Step-by-step projects using flip-flops, counters, and registers
Real-world design with 74HC-series logic chips
Techniques for designing combinational and sequential systems
This book takes a design-first, application-driven approach to digital electronics—built around working circuits, tested logic, and hands-on experimentation.
The field of digital electronics is central to modern technology. This e-book presents fundamental circuits using gates, flip-flops and counters from the CMOS 4000 Series. Each of the 50 experiments has a circuit diagram as well as a detailed illustration of the circuit’s construction on solderless breadboard.
Learning these fundamentals is best done using practical experiments. Building these digital circuits will improve your knowledge and will be fun to boot. Many of the circuits presented here have practical real-life applications. With a good overview of the field, you’ll be well equipped to find simple and cost-effective solutions for any application.
The e-book is targeted essentially at students, trainees and anyone with an interest in and requiring an introduction to digital control electronics. Moreover, the knowledge gleaned here is the foundation for further projects in the field of microcontrollers and programming.
MDP-M01 is a display control module equipped with a 2.8-inch TFT display screen, the screen can be turned 90 degrees, which is convenient for users to view data and waveform. MDP-M01 can realize online display and control with MDP-P906 mini digital power supply modules and other modules of MDP system through 2.4 GHz wireless communication, and can control up to 6 sub-modules at the same time.
Specifications
Screen size
2.8" TFT
Screen resolution
240 x 320
Power
Micro USB power input, or taking power from sub-module via dedicated power cable
Input
DC 5 V/0.3 A
Other functions
Can control up to 6 sub-modulesUpgrade firmware through Micro USB
Dimensions
107 x 66 x 13.6 mm
Weight
133 g
Included
1x MDP-M01 Smart Digital Monitor
1x Cable (2.5 mm jack to Micro USB)
Downloads
User Manual v3.4
Firmware v1.32
The DIY Mini Digital Oscilloscope Kit (with shell) is an easy-to-build kit for a tiny digital oscilloscope. Besides the power switch, it has only one other control, a rotary encoder with a built-in pushbutton. The kit's microcontroller comes preprogrammed. The 0.96" OLED display has a resolution of 128 x 64 pixels. The oscilloscope features one channel that can measure signals up to 100 kHz. The maximum input voltage is 30 V, the minimum voltage is 0 V.
The kit consists of through-hole components (THT) are surface-mount devices (SMD). Therefore, assembling the kit means soldering SMD parts, which requires some soldering experience.
Specifications
Vertical range: 0 to 30 V
Horizontal range: 100 µs to 500 ms
Trigger type: auto, normal and single
Trigger edge: rising and falling
Trigger level: 0 to 30 V
Run/Stop mode
Automatic frequency measurement
Power: 5 V micro-USB
10 Hz, 5 V sinewave output
9 kHz, 0 to 4.8 V square wave output
Display: 0.96-inch OLED screen
Dimensions: 57 x 38 x 26 mm
Downloads
Documentation
The Intelligent Digital Thermostat Temperature Controller is a small switch controller (77x51mm) which allows you to create your own thermostat. With its NTC Sensor and its LED displays, you are able to switch up to 10A 220V depending on the measured temperature.
The Arduino Uno is an open-source microcontroller development system encompassing hardware, an Integrated Development Environment (IDE), and a vast number of libraries. It is supported by an enormous community of programmers, electronic engineers, enthusiasts, and academics. The libraries in particular really smooth Arduino programming and reduce programming time. What’s more, the libraries greatly facilitate testing your programs since most come fully tested and working.
The Raspberry Pi 4 can be used in many applications such as audio and video media devices. It also works in industrial controllers, robotics, games, and in many domestic and commercial applications. The Raspberry Pi 4 also offers Wi-Fi and Bluetooth capability which makes it great for remote and Internet-based control and monitoring applications.
This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working and tested projects are given for controlling real-life systems using PID controllers. The open-loop step time response, tuning the PID parameters, and the closed-loop time response of the developed systems are discussed together with the block diagrams, circuit diagrams, PID controller algorithms, and the full program listings for both the Raspberry Pi and the Arduino Uno.
The projects given in the book aim to teach the theory and applications of PID controllers and can be modified easily as desired for other applications. The projects given for the Raspberry Pi 4 should work with all other models of Raspberry Pi family.
The book covers the following topics:
Open-loop and closed-loop control systems
Analog and digital sensors
Transfer functions and continuous-time systems
First-order and second-order system time responses
Discrete-time digital systems
Continuous-time PID controllers
Discrete-time PID controllers
ON-OFF temperature control with Raspberry Pi and Arduino Uno
PID-based temperature control with Raspberry Pi and Arduino Uno
PID-based DC motor control with Raspberry Pi and Arduino Uno
PID-based water level control with Raspberry Pi and Arduino Uno
PID-based LED-LDR brightness control with Raspberry Pi and Arduino Uno
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by Jean-François Simon
Fnirsi FNB58 USB Tester (Review)
The Fnirsi FNB58 is a versatile USB tester capable of performing a wide array of voltage, current, and energy measurements, as well as supporting numerous...