Test/Measure/Experiment
Use the USB Charger Doctor to measure the working voltage and current output for any USB port and project. This plastic dongle plugs between a USB device, and passes the data lines through. There's a 0.05 ohm resistor in line with the power pin that is used to measure current draw. The Doctor's digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones.
You can use this device from 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It flips between voltage and current readouts every 3 seconds or so. It's a very handy tool for testing USB devices, checking load levels and debugging battery chargers and boost converters.
Technical Data
Dimensions:
- 21mm x 53mm x 15mm / 0.8" x 2.1" x 0.6"
- USB Plug: 13mm / 0.5"
- Weight: 16.2g
Specifications:
- USB 1.x and 2.x - all data speeds. Does not have USB v3 pins so USB v3 connections will automatically downgrade to v2
- Working Range: 0~3A, 3.5~7VDC
- Resolution: 10mV / 10mA
- Operating Temperature: 0-60ºC
RASPBERRY PI NOT INCLUDED(Neither the key-ring and keys for those who wondered)
This cute little GPIO reference board from ModMyPi allows you to quickly and easily distinguish between the different pins of the Raspberry Pi Model B+, Raspberry Pi 2B and Pi 3B! It's even got a key chain hole, so you can carry it around and keep it handy - you'll never know when you need to hack a Pi!
The GPIO reference board features BCM numbering on one side and the pin names on the other. It can be soldered for permanent referencing, or slipped on and off when required.
Description:
This is an Experimental Platform For Raspberry Pi 2/3 Model B and B+ and Arduino UNO R3
With Breadboard, Male to Female jumper cables, T type 40Pin GPIO, Ribbon Cable.
Package includes:
1 x Acrylic Platform (with Installation screws pack)
1 x Breadboard 800
10 x Male to Female jumper cables (Length: 25cm±2cm)
1 x T type 40Pin GPIO
1 x 40 pin ribbon Cable (20cm±2cm Length)
Product information
Brand new high quality anti-static wrist strap with grounding lead and clip to prevent ESD damage to sensitive electronic components or equipment. The wrist strap with alligator clip tip is fully adjustable. The inner conducting layer is made of stainless steel filaments. The lead is made from durable polyurethane coated coil cords.
Specifications
High quality strain relief
Soft elastic band for comfort
Current limiting resistor 1M Ohm ± 5%
Electro-scattering time 0.1sec
Rinse resistant
Weight: 25g
Cable Length: 180cm
Package includes
1 x Anti-static wrist band with 180cm grounding lead
- Powered by a single 9V cell battery(not included)
Use the USB Charger Doctor to measure the working voltage and current output for any USB port and project. This plastic dongle plugs between a USB device, and passes the data lines through. There's a 0.05 ohm resistor in line with the power pin that is used to measure current draw. The Doctor's digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones.
You can use this device from 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It displays both voltage and current readouts. It's a very handy tool for testing USB devices, checking load levels and debugging battery chargers and boost converters.
DC ammeter: 0-10A with reverse polarity protection
Power supply: DC4-30V
Measuring range: 0 - 10A
Measurement accuracy: ±0.1%
Refresh rate: about 200ms
Display: 0.56 inch digital tube
Color: Green display
Operating current: Less than 8mA
Operating temperature: -10°C to 65°C
Input impedance: 5mΩ
Overall dimension: 48 x 29 x 26mm
Package Included:
1 x 0.56 Inch digital ammeter
Item Name: Servo Tester
Size: 46x32x17mm
Weight: 8g
Color: Blue
Input: DC 4.2 to 6.0V
Output: ≤15mA (5.0)
Output signal: 1.5ms±0.5ms
Adjustment Methods: Manual, Neutral, Automatic.
Features:
Small size,low power consumption,high reliability and easy operation.
It can easily detect and configure server virtual bit, jitter and middle position.
Can connect two servos or ESC;
MCU control,good stability,high accuracy.
Note:
This product can't test a servo with a weight more than 55g.
If you want to test the motor,please first connect the ESC.
Package Includes:
1x servo tester
Need a case with prototyping space for your shiny Raspberry Pi Zero, we've got on for you! Made with our trademark stealth-matte black acrylic, and accented with clear (to leave the good bits visible), the case itself is constructed 4 unique acrylic layers, and comes complete with a side by side half-size breadboard for all your hacking needs!
Features:
- 4 Part Acrylic Layer Case
- Includes Half-Size Breadboard for Prototyping
- Fits Raspberry Pi Zero (Not Included)
- Top & Bottom GPIO Pin Access
Function | Range | Resolution | Accuracy | MAX.Value | Other |
DC Voltage | 6.000V | 0.001V | ±(0.5%+3) | 1000V | Input Resistance:10MΩ |
60.00V | 0.01V | ||||
600.0V | 0.1V | ||||
1000V | 1V | ||||
60.00mV | 0.01mV | 600mV | |||
600.0mV | 0.1mV | ||||
AC Voltage | 6.000V | 0.001V | ±(1.0%+3) | 750V | Input Resistance:10MΩ(600mV range, >60MΩ) Frequency Response: 40Hz-1kHz |
60.00V | 0.01V | ||||
600.0V | 0.1V | ||||
750V | 1V | ||||
60.00mV | 0.01mV | 600mV | |||
600.0mV | 0.1mV | ||||
DC Current | 6.000A | 0.001A | ±(1.2%+3) | 10A | MAX.Current: 10A(no more than 15 seconds) No Voltage input at this mode Frequency Response(AC): 40Hz-1kHz |
10.00A | 0.01A | ||||
60.00mA | 0.01mA | 600mA | |||
600.0mA | 0.1mA | ||||
AC Current | 6.000A | 0.001A | ±(1.5%+3) | 10A | |
10.00A | 0.01A | ||||
60.00mA | 0.01mA | 600mA | |||
600.0mA | 0.1mA |
Resistance | 600.0Ω | 0.1Ω | ±(0.5%+3) | 60MΩ | No Voltage input at this mode | |||||
6.000kΩ | 0.001kΩ | |||||||||
60.00kΩ | 0.01kΩ | |||||||||
600.0kΩ | 0.1kΩ | |||||||||
6.000MΩ | 0.001MΩ | |||||||||
60.00MΩ | 0.01MΩ | ±(1.5%+3) | ||||||||
Capacitance | 9.999nF | 0.001nF | ±(5.0%+20) | 9.999mF | No Voltage input at this mode | |||||
99.99nF | 0.01nF | ±(2.0%+5) | ||||||||
999.9nF | 0.1nF | |||||||||
9.999μF | 0.001μF | |||||||||
99.99μF | 0.01μF | |||||||||
999.9μF | 0.1μF | |||||||||
9.999mF | 0.001mF | ±(5.0%+5) | ||||||||
Frequency | 99.99Hz | 0.01Hz | ±(0.1%+2) | 9.999MHz | ||||||
999.9Hz | 0.1Hz | |||||||||
9.999kHz | 0.001kHz | |||||||||
99.99kHz | 0.01kHz | |||||||||
999.9kHz | 0.1kHz | |||||||||
9.999MHz | 0.001MHz | |||||||||
Duty Cycle | 1%~99% | 0.1% | ±(0.1%+2) | |||||||
Diode | √(DC forward current is 5mA, voltage is 3V) | No Voltage input at this mode | ||||||||
Continuity | √(no more than 50Ω) | |||||||||
Temperature | -20~1000℃ | 1℃ | ±(2.5%+5) | 1000℃ | ||||||
-4~1832℉ | 1℉ | 1832℉ |
This meter is a handheld and battery-powered tool, used to identify resistors, capacitors and diodes.
It has a large LCD display and will shut down automatically after 10 minutes if no button is pushed during this period.
Range:
Product name: Liitokala Lii-402 Micro USB 4Slots Battery Charger
Input : Micro USB DC 5V/2A
Output: 1.42V
4.2V±0.05V
3.65±0.05V
4.35±0.05V
Current: 2000mA*1 1000mA*2 700mA*3 500mA*4
Constant voltage, cut-off current: less than 100mAh
Standby current: less than 15mAh
Compatible with:
Ni-MH/Cd
AA/AAA/A/SC Sizes
3.7V Li-ion battery including
26650,22650,26500,18650,18490,17670,17500,16340,14500,10440
Size: 112mm x 90mm x 30mm (L x W x H)
Weight: 150 grams (incl. micro cable)
USB Output function
1. 0pen-circuit voltage of USB output : 4.9-5.3V; and the 4th slot is fixed for the USB discharge power source
2. Output current: 1000mAh
3. Open circuit current: <1mAh
4. The corresponding voltage is 4.75-5.25V under 1000mAh current
5. Cut-off voltage for discharge protection: 3.0±0.1V
1 x Liitokala Lii-402 Micro USB 4Slots Battery Charger
1 x USB Cable
4. This is an entry level measuring solution. Do not expect 100% accuracy.
Dimensions of LED display screen: 51 x 30mm
1 x CT
FAQ
Why is the test data wrong? Voltage * Current = Power, But power is less than the actual test voltage * Current, Why is that?
Answer: There are three types of power:
Active Power (P represents / unit W)
Reactive power (Q represents / unit Var)
Apparent power (S represents / unit VA)
Here we only talk about Active Power, for others, please google it:
P = U * I * cosφ, cosφ it represents the power factor, purely resistive load (Such as incandescent, heater, etc.) the power factor is generally close to 1,Between the inductive and capacitive load load power factor 0-1. So purely resistive load test time, P is substantially equal to or close to U * I. When Inductive or capacitive load test (Such as refrigerators, washing machines, televisions, computers, etc.) P<U*I, As for how much to keep the power factor related to the specific, Different for each appliance power factor.
Working voltage: 4-30V
How Much Power Does my Fridge Use - with the Battery connected to the SOURCE side and Car Fridge (or other accessory) connected to the LOAD side. The Watt Meter shows the current into the Fridge, voltage and power at the battery and accumulates the Ah and Wh while the fridge is running.
How much charge is going into my battery - With a battery charger (or alternator) connected to the SOURCE side and the aux battery connected to the LOAD side, the Watt Meter shows the charging current into the battery, the voltage and charging power at the battery and accumulates the charge (Ah) and energy (Wh) into the battery.
What is the output of my solar panel - With a solar panel connected to the SOURCE side and solar regulator connected to the LOAD side, the Watt Meter shows the charging current into the regulator, the voltage and charging power at the solar panel and accumulates the charge (Ah) and energy (Wh) into the regulator.
How much charge is my solar panel putting into my battery - Now with a solar regulator connected to the SOURCE side and battery connected to the LOAD side, the Watt Meter shows the charging current into the battery, the voltage and charging power at the regulator and accumulates the charge (Ah) and energy (Wh) into the battery.
Specification:
Item Name | Watt Meter and Power Analyzer |
Item NO. | FT08 |
Operation Voltage | 4.8V-60V |
Measures Range | 0-130A, resolution 0.01A; 0-60V, resolution 0.01v; 0-6554W, resolution 0.1w; 0-65Ah,resolution 0.001An; 0-6441Wh,resolution 0.1Wh; |
LCD | 16 x 2, backlit LCD display |
Size | 85 mm x 43 mm x 25 mm (3.35 in x 1.69 in x 0.98 in) |
Weight | 82g |
Color | Black |
English Manual please click here
Package Includes:
1x 130A High Precision Battery Watt Meter And Power Analyzer
Color: White
Handy device for testing LED's. Simply plug your LED into the correct holes (all of which are marked) and push the button to see its brightness, illuminant color, etc.
Handy device for testing LED's (2-150mA)
The top row is for 2 pin LED's with currents ranging from 2mA - 30mA
The bottom row is for 4 pin LED's (piranha LED's) with currents ranging from 20mA - 150mA
Lightweight & compact
Powered by a 9V battery (not included)
Item size(L*W*H) : Approx. 80mm x 55mm x 22mm
Quantity: 1PC
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