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
This kit includes 2 servo motors and a Monk Makes ServoSix interface board for use with Raspberry Pi. It also includes a Raspberry Leaf GPIO template, a bunch of female-to-female header pins and a 4xAA battery box.Features of the Servo Six board
Screw terminals for servo power supply
Reverse-polarity protection for the servo power supply
470 µF 16 V capacitor for servo supply
470 Ω current limiting resistors for servo control lines (to protect GPIO pins)
Power indicator LE
DownloadsInstructions
Thanks to its I²C capabilities, this PWM HAT saves the Raspberry Pi's GPIO pins, allowing you to use them for other purposes. The Servo pHAT also adds a serial terminal connection, which will allow you to bring up a Raspberry Pi without having to hook it up to a monitor and keyboard. We have provided a Qwiic connector for easy interfacing with the I²C bus using the Qwiic system and a 4-pin header to connect to the Sphero RVR. Power to the SparkFun Servo pHAT can be supplied through a USB-C connector. This will power either the servo motors only or power the servo motors and the Raspberry Pi that is connected to the HAT. We switched to USB-C to allow you to bring more current to your servos than ever before. This USB-C connector can also hook up the Pi via serial port connection to avoid having to use a monitor and keyboard for setting up the Pi. To supply power only to the servo power rail (and not the Pi's 5V power rail), you need to cut a small trace on the isolation jumper. Doing this allows you to drive heavier loads coming from multiple or larger servos. We've even added power protection circuits to the design to avoid damage to power sources. Each of this pHAT's 16 servo motor pin headers has been spaced out to the standard 3-pin servo pinout (ground, 5V, signal) to make it easier to attach your servo motors. The Servo pHAT is the same size and form factor as a Raspberry Pi Zero and Zero W, but it can also operate with a regular Raspberry Pi. Features 16 PWM channels, controllable over I²C Qwiic connector 4-pin RVR header for connection to Sphero RVR USB-C connector 40-pin GPIO header for connection to Raspberry Pi CH340C USB Serial SOIC16 Updated logic level conversion circuitry Power protection circuits
The Unitree Go2 D1 Servo Robotic Arm is a high-performance 6-DOF robotic arm, purpose-built for seamless integration with the Unitree Go2 Quadruped Robot. Designed for flexibility and precision, it’s an ideal tool for education, research, automation, and advanced robotics development.
Featuring six fully articulated joints and an integrated gripper, the D1 offers true six-axis motion and exceptional freedom of movement. With support for position, velocity, and force control, it enables precise operation across a wide range of tasks – from real-world deployment to experimental learning environments.
Constructed from lightweight aluminum alloy, the arm weighs just 2.37 kg while maintaining a reach of 670 mm. This balance of strength and agility makes it well-suited for mobile applications, without compromising stability or range.
Thanks to its dual-level interface architecture, the D1 supports both low-level motor commands and high-level behavior programming – giving developers, educators, and researchers full control, whether they’re fine-tuning motion sequences or building complex robotic workflows.
Compatible with external components like cameras or mobile robot chassis, the Unitree D1 opens the door to a variety of expanded use cases. Whether it's autonomous object manipulation, AI training, or hands-on robotics education, the D1 transforms any environment into a dynamic and interactive innovation platform.
Specifications
DoF
6 Axis + 1 Gripper
Payload
500 g
Arm Reach
550 mm (Gripper not included)670 mm (Gripper included)
Interfaces
DC5.5-2.1 (Power Supply)RJ45 (Communication)USB-C (Serial Port Debugging)
Motor Type
Bus Servo
Power
60 W
Weight
2.37 kg
Joint Rotation Range
J1: ±135°J2: ±90°J3: ±90°J4: ±135°J5: ±90°J6: ±135°
The FNIRSI FNB58 USB tester (with Bluetooth) is a comprehensive and very accurate USB voltage and current meter. It features a 2.0-inch full-color HD TFT display, built-in USB-A, micro USB and USB-C interface. With this device you can measure the power supply or power consumption of products or the charging power of cell phones and power supplies. You can also determine the fast charging protocol of chargers.
Features
USB-A and USB-C interface
2.0" HD display
Data at a glance
Wide compatibility
Ultra-precise data detection
Play with fast charging technology
Automatic protocol detection (PD2.0, 3.0, 3.1, PPS, QC2.0, 3.0, FCP, SCP, AFC, PE, DASH VOOC, SuperVOOC and more)
Simple user interface, easy to operate
4 function curve displays (real-time voltage and current curve, offline curve recording, D+/D- voltage curve, high-speed power supply ripple measurement)
Cable detection
10 groups of energy recording battery capacity calculation
PC connectivity for data logging and firmware updates
Bluetooth app for Android devices
Specifications
Voltage range
4-28 V
Current range
0-7 A
Power range
0-120 W
Load equivalent internal resistance
0-9999.9 Ω
D+/D- voltage
0-3.3 V
Capacity
0-9999.99 Ah
Power consumption
0-9999.99 Wh
Cable resistance
0-9999.9 Ω
Interfaces
micro USB, USB-A, USB-C
Dimensions
42 x 13 x 82 mm
Downloads
Manual
Firmware V0.68
With this device, you'll be able to automatically to detect NPN and PNP transistors, n-channel and p-channel MOSFETs, diodes, thyristors, resistors, capacitors and many other components. It is also possible to measure certain characteristics of these devices as, for example, the current amplification factor of BJT or the gate threshold voltage of a MOSFET and much more.Features
Automatic detection of NPN and PNP transistors, n-channel and p-channel MOSFETs, diodes (including double diode), thyristors, resistor and capacitor and other components
Automatic testing of the pins of a component, and displaying on the LCD
Detection of the transistor, MOSFET protection diode amplification coefficient and the base to determine the emitter transistor forward biased voltage
Measurement of the gate threshold voltage and the gate capacitance of the MOSFET
Simultaneous measurement of the of two resistors while displaying resistor symbol
Measurement of a single diode reverse capacitance
Measurements of capacitance, resolution 1 pF
Identification of Darlington transistors via the base-emitter threshold voltage and current amplification factor
Measurement of the bipolar transistor current amplification factor and the base-emitter threshold voltage
2x16 Characters LCD-Display (12864 LCD with green backlight)
Test ranges
Resistance: Max. 50 MΩ, resolution 0.1 Ω
Capacitance: 25 pF – 100000 µF
Inductance: 0.01 mH – 20 H
Specifications
One-button operation
Automatic shutdown for improved battery life
Shutdown current less than 20 nA
DSO-TC3 combines a digital oscilloscope, electronic component tester, signal generator, continuity test, voltage test, temperature and humidity measurement, infrared decoding and other functions are skillfully integrated. It is equipped with a 2.4" color TFT display and a built-in rechargeable lithium battery for mobile use.
Specifications (Oscilloscope)
The oscilloscope has a real-time sampling rate of 10 MSa/s and a bandwidth of 500 kHz.
With complete trigger function (single, normal, automatic), no matter if you’re using periodic analog signals or non-periodic digital signals.
Maximum measured voltage signal is 400 V.
Equipped with efficient AUTO, the measured waveform can be displayed without cumbersome adjustments.
Real-time sample rate
10 MSa/s
Bandwidth
500 kHz
Input resistance
1 MΩ
Coupling method
AC/DC
Test voltage range
400 V
Vertical Sensitivity (x1)
10 mV-10 V
Horizontal time base range
1us-10s
Trigger mode
Auto/Normal/Single
Trigger type
Rising edge/Falling edge
Waveform Freeze
Yes
Automatic measurement
Yes
Specifications (Component Tester)
The instrument can automatically identify and measure various transistors, including NPN and PNP triodes, N-channel and P-channel mosfet, junction mosfet, diodes, dual diodes, thyristors, and resistors, inductors, capacitors and other passive components.
Automatic detection of pin definition.
Automatically analyze NEC protocol infrared code.
Other functional modes: Including circuit continuity test, 0-40 V input voltage measurement, PWM output, 0-32 V regulated diode measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement, etc.
Specifications (Signal Generator)
The signal generator has a total of 6 waveforms to choose from, with adjustable frequency and amplitude.
Sine wave
1-100 KHz/0-3.3 V/50%
Square wave
1-100 KHz/3.3 V/50%
Pulse wave
1-100 KHz/3.3 V/0-100%
Triangle wave
1-100 KHz/0-3.3 V/50%
Ramp
1-100 KHz/0-3.3 V/0-100%
DC
0-3.3 V
Included
1x DSO-TC3
1x P6100 Oscilloscope Probe (100 MHz)
3x Test Hooks
1x Adapter
1x USB-C Cable
1x Manual
Downloads
Manual
Firmware V0.3
The FNIRSI LCR-ST1 is a compact, multifunctional, and smart LCR tester that supports automatic measurements of resistance, capacitance, inductance, diode testing, and continuity.
Its 1.14-inch color display combined with a convenient magnetic adsorption function enhances ease of use, while the built-in 250 mAh lithium battery ensures long-lasting performance. The device supports three frequency ranges (100 Hz, 1 kHz and 10 kHz) and offers 0.3 V and 0.6 V RMS test levels for versatile testing applications.
The unique tweezer-shaped design of the LCR-ST1 is ideal for delicate tasks in confined spaces and enables fast and accurate testing of electronic components. Its light weight and portable design make it an invaluable tool for both field and laboratory use.
Whether you are an experienced engineer or just starting out in electronics, the LCR-ST1 delivers reliable and accurate measurement results, allowing you to complete your tasks with greater efficiency and precision.
Features
Offers 3 test frequencies (100 Hz, 1 kHz, 10 kHz) and 2 test voltage levels.
Features automatic component identification for faster and more reliable measurements.
High-resolution 1.14-inch color display for clear readouts.
Supports automatic data recording and storage.
The tweezer tips are made from gold-plated brass for enhanced durability and conductivity.
Specifications
Resistance Range
10 mΩ – 10 MΩ
Capacitance Range
1 pF – 22 mF
Inductance Range
1 μh – 10 H
Diode
On voltage 0.7 V
Frequency Test
100 Hz, 1k Hz, 10 KHz
Level Test
0.3 V, 0.6 V RMS
Parameter Display
ESR, D value, Q value, Z value, X value
Display
1.14" HD color screen
Charging Interface
USB-C, 5 V/1 A
Power Supply
Built-in 250 mAh lithium battery
Auto Recognition Measurement
Yes
Replaceable Tweezer Head
Yes
Auto Shutdown
Yes
Data Hold
Yes
History Record
Connect to PC to view and export
Dimensions
28 x 19 x 150 mm
Weight
41 g
Included
1x LCR-ST1 SMD Tweezers
2x Hook Tips
1x Magnetic Patch
1x USB cable
1x Tool bag
1x Manual
Downloads
Manual
Firmware V1.6
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by Jean-François Simon
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