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We found this little unit great to measure our incoming solar power versus outgoing battery load on a second unit
R299.90  Inc VAT
Connect up to 7 Current and 1 voltage sensor to a raspberry pi.
R1,299.90  Inc VAT
Connect up to 7 Current and 1 voltage sensor to a raspberry pi.
R1,799.90  Inc VAT
Coming Soon. Login and add this item to your wishlist to be notified when stock arrives. Pricing is estimated at this stage.
R24.90  Inc VAT
L7812CV Voltage Regulator IC 12V (Voltage Regulator IC 12V)
Primary input voltage: 19V
Input Voltage Min: 14V
Maximum input voltage: 35V
Fixed output voltage: 12V
Pressure drop: 2V
Output channel number: 1
Number of pins: 3
Output current: 1.5A
Package Type: TO-220 Tube
Operating temperature range: 0℃ to + 150℃ 
SVHC (Highly Concerned Substances): No SVHC (20-Jun-2011)
Device number: 7812
Tolerance, operating voltage +: 4%
Voltage Rectifier Type: Positive Fixed
Maximum supply voltage: 27V
Power supply voltage minimum: 14.5V
Surface Mount Devices: Through Hole Installation

Package included:

1 x TO-220 Voltage Regulator IC

Resources:
Understanding How a Voltage Regulator Works
R6.90  Inc VAT
Charger Docter - USB Voltage and Current Meter (USB Docter single)

Description:

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.

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
  • Contents:
  • Camera Board 360 Gooseneck Mount V2

Dimensions:

  • 21mm x 53mm x 15mm / 0.8" x 2.1" x 0.6"
  • USB Plug: 13mm / 0.5"
  • Weight: 16.2g
R99.90  Inc VAT
DC 4.5-30V 3 Wire LED Voltmeter Digital Display Panel Volt Meter (dc 3 wire volt meter)
Features:
 
Display Color: Red
The black line connects to the negative electrode, red line connects to positive pole of power supply, white line connects to positive pole of tested power supply
Material: Plastic Shell
Display Digit: 3
Measuring Range: DC 4.5-30V
Working voltage: 4.5-30V
Overall Dimension: Approx 28mm x 47mm x 21mm
 
Package Includes:
 
1 x Digital LED Display Voltmeter
R32.90  Inc VAT
USB Detector Current Voltage 3V-9V Tester Dual USB Dual display (USB Docter Dual)

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.

R199.90  Inc VAT
8-Channel 3.3V to 5V Voltage Converter Module for Raspberry Pi - Blue (8ch blue convert logic)
Raspberry Pi and jumper cables are not included.

Highlights:

- Mutual conversion between 3V and 5V, It's convenient for PI connected to external 5V sensors or modules

- Supports total of 8 channels

- Range of voltage converted: 1.8V~6VDC

How to Use:
In the case of translating between 3.3V and 5V system:
VCCA connects to 3.3V power supply
VCCB connects to 5V power supply
GND connects to power negative pole respectively, the two power supply should be common-grounded with each other
When Ax has 3.3V input, Bx will get 5V output
When Bx has 5V input, Ax will get 3.3V output
NO direction control required
R39.90  Inc VAT
L7805CV TO220 5V Voltage Regulator (L7805 Volt Reg)
  • Integrated circuit
  • Voltage regulator
  • +5V
  • Non Insulated

Resources:
Understanding How a Voltage Regulator Works
R5.90  Inc VAT
ANENG AN8002 Digital Multimeter AC/DC Current Voltage Frequency Resistance Temperature ℃/℉ (multimeter AN8002)
Description:
 
It is a Auto-ranging digital MultiMate using double-integral style A/D transform as the core. 
Can be used to measures Temperature AC/DC Voltage AC/DC Current Resistance Capacitance Diode and Continuity testing temperature Frequency and Etc.
The products are battery powered they are characterized by stable function and high reliability, with the features of overload protection and LCD display for clear reading are an ideal tools for lavatory radio fans and family use.
 
Features: 
 
Auto Range. 
True RMS measurement. 
Resistance capacitance frequency file high voltage 550V protection. 
Large screen display, the maximum of 6000 words. 
Sampling rate: about 3 times per second.
Temperature measuring.
Backlight display. 
Data retention. 
Polarity automatic recognition. 
Low voltage display. 
10A large current measurement MA level small current measurement Automatic shutdown. 
Main measurement: AC / DC voltage, AC / DC current, resistance, capacitance. 
Diode / off measurement, frequency and duty ratio measurement. 
 
Specification: 
 
 
FunctionRangeResolutionAccuracyMAX.ValueOther
DC Voltage 6.000V0.001V±(0.5%+3)1000VInput Resistance:10MΩ
60.00V0.01V
600.0V0.1V
1000V1V
60.00mV   0.01mV600mV
600.0mV    0.1mV   
AC Voltage 
 
6.000V0.001V±(1.0%+3)750VInput Resistance:10MΩ(600mV range, >60MΩ)
Frequency Response: 40Hz-1kHz
60.00V0.01V
600.0V0.1V
750V1V
60.00mV0.01mV   600mV
600.0mV    0.1mV   
DC Current
 
6.000A0.001A±(1.2%+3)10AMAX.Current:
10A(no more than 15 seconds)
No Voltage input at this mode
Frequency Response(AC):
 40Hz-1kHz
10.00A0.01A
60.00mA0.01mA600mA
600.0mA0.1mA
AC Current 
 
6.000A0.001A±(1.5%+3)10A
10.00A0.01A
60.00mA0.01mA600mA
600.0mA0.1mA
Resistance600.0Ω0.1Ω±(0.5%+3)60MΩNo Voltage input at this mode
6.000kΩ0.001kΩ
60.00kΩ0.01kΩ
600.0kΩ0.1kΩ
6.000MΩ0.001MΩ
60.00MΩ0.01MΩ±(1.5%+3)
Capacitance 9.999nF0.001nF±(5.0%+20)9.999mFNo Voltage input at this mode
99.99nF0.01nF±(2.0%+5)
999.9nF0.1nF
9.999μF0.001μF
99.99μF0.01μF
999.9μF0.1μF
9.999mF0.001mF±(5.0%+5)
Frequency99.99Hz0.01Hz±(0.1%+2)9.999MHz 
999.9Hz0.1Hz
9.999kHz0.001kHz
99.99kHz0.01kHz
999.9kHz0.1kHz
9.999MHz0.001MHz
Duty Cycle1%~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℉

Measurement mode: double-integral style A/D transform 
Sample rate: 3 times per second 
Over range indication: OL
Powered by 2 x AAA batteries  (Not included).
Working Environment: 0-40 degrees relative humidity: <80% 
Product size: approx. 130 x 65 x 30mm/5.11 x 2.55 x 1.18'' 
Net weight: approx. 170g 
Gross weight: approx.238g           
 
Package included:
 
1 x ANENG AN8002 Digital Ture RMS 6000 Counts Multimeter
2 x Test Lead Set 
1 x Temperature Sensing Cable 
1 x Storage Bag 
1 x English User Manual
R549.90  Inc VAT
Buck Converter Step Down DC 24V to 12V 5A 60W Voltage Regulator (24 to 12V step down regulator)
Description :
1. Over current protection.
2. Short circuit protection
3. Quantity: 1 pc
 
Specification :
Minimum pressure2V
Input VoltageDC 24V(DC15V—40V)
Output VoltageDC 12V
Output Power60W
Output Current5A
Conversion Efficiency90%
Full Load Temperature Rise50 degree
 
Package includes :
1 X Buck Converter Step-Down Voltage Regulator
R206.90  Inc VAT
130A High Precision DC Watt Meter And Power Analyzer (DC Power analyzer)
Examples of Uses:

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 NameWatt Meter and Power Analyzer
Item NO.FT08
Operation Voltage4.8V-60V
Measures Range0-130A, resolution 0.01A;
0-60V, resolution 0.01v;
0-6554W, resolution 0.1w;
0-65Ah,resolution 0.001An;
0-6441Wh,resolution 0.1Wh;
LCD16 x 2, backlit LCD display
Size85 mm x 43 mm x 25 mm (3.35 in x 1.69 in x 0.98 in)
Weight82g
ColorBlack

English Manual please click here

Package Includes:
1x 130A High Precision Battery Watt Meter And Power Analyzer
We found this little unit great to measure our incoming solar power versus outgoing battery load on a second unit
R299.90  Inc VAT
RPICT7V1 100A Version 5 - 7 CT - 1Voltage - Master (lec 100A 7 current 1 volt board)

RPICT7V1 Version 5

Raspberrypi AC current and voltage hat






  • 7x AC Current Ports.
  • 1x AC Voltage Ports.
  • Provides Irms, Vrms, RealP, ApparentP, ReactiveP, PFactor, Frequency, EstimatedP.
  • View/record data using Linux / Python / Emoncms / Grafana / MQTT and more.
  • Configurable from serial port.
  • Open Source Arduino Firmware.
  • Stackable with RPICT8 Slave.

Package Content

  • 1 RPICT7V1 Unit.
  • 4 Mounting Stand off with screws.
The listing does not include sensors and Raspberry pi.

Recommended Sensors

Voltage:

  • 77DE-06-09 (EU)

Current:

(for any other CT sensor please contact us to have adapted resistor mounted and calibration coefficients calculated)

Technical Specifications

MicrocontrolerAtmel Atmega328p
MCU Frequency16Mhz
Operating Voltage5V
Waveform Sampling4400sps
Fastest Data Polling1400ms (all 7 channels)
Vertical Resolution12 bits (4096 steps)
CommunicationUART Serial Port
FirmwareArduino (open source)
Dimensions56x65mm
Programming port6 pin ISP
Compatible OSAny supporting GPIO serial port access
Compatible RaspberrypiAll of Family 1,2,3,4 and Model A, B
Compatible CTCurrent output type
AC Current Range100A
AC Voltage Range240V
Smallest Readable CurrentApprox 50mA to 150mA

Scope of Use

This development board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by LeChacal.com to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. This
evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.

Connect up to 7 Current and 1 voltage sensor to a raspberry pi.
R1,299.90  Inc VAT
Isolated AC 110V / 220V To DC 5V 600mA Constant Voltage Switch Power Supply Converter (220AC to 5DC converter white)
Description:

This power supply is a isolated industrial grade built-in power module with temperature, over current, and short circuit protection.

Features:

AC85 - 264V or  DC110 - 370V wide voltage input
DC 5V(+/ -0.2V) 600mA isolated output
Input Current: 0.0273A/115VAC  0.014A/230VAC
Input surge current: 20A (230VAC)
Frequency range: 50/60 Hz
Operating Temperature: -30 - 70 ℃
Relative humidity: 20%- 90%
Rated power: 3W
Output efficiency: 80%
Module size: 40mm x 23mm x 23mm

Package includes:

1 x AC-DC Isolated AC 110V / 220V To DC 5V 600mA Constant Voltage Switch Power Supply Converter
R74.90  Inc VAT
RPICT7V1 30A Version 5 - 7 CT - 1Voltage - Master (lec 30A 7 current 1 volt board)

RPICT7V1 Version 5

Raspberrypi AC current and voltage hat






  • 7x AC Current Ports.
  • 1x AC Voltage Ports.
  • Provides Irms, Vrms, RealP, ApparentP, ReactiveP, PFactor, Frequency, EstimatedP.
  • View/record data using Linux / Python / Emoncms / Grafana / MQTT and more.
  • Configurable from serial port.
  • Open Source Arduino Firmware.
  • Stackable with RPICT8 Slave.

Package Content

  • 1 RPICT7V1 Unit.
  • 4 Mounting Stand off with screws.
The listing does not include sensors and Raspberry pi.

Recommended Sensors

Voltage:

  • 77DE-06-09 (EU)

Current:

(for any other CT sensor please contact us to have adapted resistor mounted and calibration coefficients calculated)

Technical Specifications

MicrocontrolerAtmel Atmega328p
MCU Frequency16Mhz
Operating Voltage5V
Waveform Sampling4400sps
Fastest Data Polling1400ms (all 7 channels)
Vertical Resolution12 bits (4096 steps)
CommunicationUART Serial Port
FirmwareArduino (open source)
Dimensions56x65mm
Programming port6 pin ISP
Compatible OSAny supporting GPIO serial port access
Compatible RaspberrypiAll of Family 1,2,3,4 and Model A, B
Compatible CTCurrent output type
AC Current Range30A
AC Voltage Range240V
Smallest Readable CurrentApprox 50mA to 150mA

Scope of Use

This development board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by LeChacal.com to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. This
evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives.

Connect up to 7 Current and 1 voltage sensor to a raspberry pi.
R1,799.90  Inc VAT
RPIZ_CT3T1 3 current and 1 Temperature 30A AC adapter for Raspberry Pi zero (lec zero 3 current 1 temp)

The RPIZ_CT3T1 is the same unit as the RPICT3T1 in the Raspberry pi Zero format.

Refer to the RPICT3T1 for full documentation.

Use with sct-013-000 split core current sensor and DS18B20 temp sensor

Please note: Raspberry Pi Zero and sensors are not included


R649.90  Inc VAT
RPIZ_CT3V1 3 current and 1 Volt 30A AC adapter for Raspberry Pi zero (lec zero 3 current 1 volt)

The RPIZ_CT3T1 is the same unit as the RPICT3V1 in the Raspberry pi Zero format.

Refer to the RPICT3V1 for full documentation.

Use with sct-013-000 split core current sensor and 230VAC to 9VAC power adapter

Please note: Raspberry Pi Zero and sensors are not included



R649.90  Inc VAT
DC 0-100V 10A Digital Voltmeter Ammeter Dual Display Gauge 0.28" Red Blue LED (volt/amp meter 10A)
Description

  • Voltage 0.0V to 100V
  • Current 0A to 10A
  • Working voltage DC 4 to 30V
  • Working current <20mA
  • Size 48mm x 29mm x 22mm

R54.90  Inc VAT
LD1117V33 voltage Regulator 3.3 V TO-220 (LD1117V33 Volt Reg)
    Specifications
    Output Voltage3.3 V
    Output TypeFixed
    Package TypeTO-220
    Maximum Output Current1.3A
    Mounting TypeThrough Hole
    Maximum Input Voltage15 V
    Pin Count3
    Number of Outputs1
    PolarityPositive
    Quiescent Current5mA
    Accuracy±1%
    Minimum Operating Temperature0 °C
    Maximum Operating Temperature+150 °C
    Height9.15mm
    Width4.6mm
    Line Regulation6 mV
    Length10.4mm
    Dimensions10.4 x 4.6 x 9.15mm
    Load Regulation10 mV


    Resources:
    Understanding How a Voltage Regulator Works

    R9.90  Inc VAT
    12V Lead Acid Battery Digital Charge Level Indicator (battery meter digital)
    Description:

    Charge Level Red Indicator Voltmeter Precise for 12V Lead-acid Battery
    1. Working current:5-15mA
    2. Eight electricity Level Resolution:10% 25% 40% 50% 60% 75% 90% 100%
    3. Voltmeter accuracy:1%
    4. Working temperature: -10 ~ +65 Celsius
    5. Operating Humidity: 10 ~ 80%
    6. Dimensions: 48mm x 29mm x 22mm

    Indicator:

    Battery voltage is greater than 11.1V, 1 led indicator is lit.
    Battery voltage is greater than 11.3V, 2 led indicator is lit.
    Battery voltage is greater than 11.6V, 3 led indicator is lit.
    Battery voltage is greater than 11.9V, 4 led indicator is lit.
    Battery voltage is greater than 12.2V, 5 led indicator is lit.
    Battery voltage is greater than 12.5V, 6 led indicator is lit.
    Battery voltage is greater than 12.9V, 7 led indicator is lit.
    Battery voltage is greater than 13.3V, 8 led indicator is lit.

    Package Includes:

    1 x lead acid LED indicator battery capacity tester voltmeter 12V
    R57.90  Inc VAT
    22mm 50-380V 100A 99Hz Digital Red LED Volt Amp HZ AC Ammeter Voltmeter Current Frequency Meter (V A HZ meter red AC)
    Specifications:

    Material: Electrical components
    Color: Red
    Shape: Square
    Voltage measurement range: AC 50-380V
    Current measurement range: AC 0-100A
    Frequency measurement range: 0-99Hz
    Size: 21.75mm x 21.75mm x 51.69 mm
     
    Package Includes:
     
    1 X  Voltage & Current & Frequency meter
    R149.90  Inc VAT
    DC Voltage detection Sensor (DC Volt sensor)
    Introduction:

    This module is based on a resistive divider principle design, make the interface terminal input voltage reduced 5 times, A rduino analog input voltage up to 5V, then the input voltage of the voltage detection module can not be greater than 5V × 5 = 25V (if used 3.3V system, the input voltage can not exceed 3.3Vx5 = 16.5V). Because A rduino AVR chips used in 10 AD, so the resolution of the analog module is 0.00489V (5V / 1023), so the voltage detection module detects a minimum input voltage of 0.00489V × 5 = 0.02445V.
        
        Parameters:
        Voltage input range: DC0-25V
        Voltage detection range: DC0.02445V-25V
        Voltage analog resolution: 0.00489V

        Wiring:
        DC input connector:
        
        the positive terminal connected to VCC,
        the negative  connected to GND
        Output interface:
        "+" is 5 / 3.3V,
        "-" then GND,
        "s" Arduino connected to the AD pin


        Arduino Code:

        #include


        int val11;
        int val2;

        void setup()
        {  
         pinMode(LED1,OUTPUT);  
         Serial.begin(9600);  
         Serial.println("Emartee.Com");  
         Serial.println("Voltage: ");  
         Serial.print("V");
        }
        void loop()
        {      
         float temp;      
         val11=analogRead(1);      
         temp=val11/4.092;      
         val11=(int)temp;//      
         val2=((val11%100)/10);      
         Serial.println(val2);         
         delay(1000);
        }                   

    Raspberry Pi: https://kookye.com/2017/06/01/design-a-voltmeter-with-the-raspberry-pi-board-and-voltage-sensor/
     
    Package Includes:

    1 x  Voltage detection Module
    Coming Soon. Login and add this item to your wishlist to be notified when stock arrives. Pricing is estimated at this stage.
    R24.90  Inc VAT
    Machifit 4pcs 22mm 20-500V Digital AC Voltmeter (4pcs AC voltmeter set)
    Description:
    Machifit 4pcs 22mm AC 20-500V Digital AC Voltmeter Voltage Meter Gauge Digital Display Indicator

    Specifications:
    ModelAD16-22V
    Mounting hole22mm
    VoltageAC 20-500V
    Class of safety protectionIP65
    ColorRed, blue, yellow, green
    Quantity4pcs


    Features:
    Using copper contact, not easy to oxide and durable.
    Life time can reach 100000 hours with LED chip.
    Widely used in electric power, CNC lathe, printing, mechanical equipment, medical equipment, instrument equipment, etc.

    Package Includes:
    4 x AD16-22V 22mm Digital AC Voltmeters
    R239.90  Inc VAT
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