Adapter board voltage measurement

Buy WITRN-POW001 Multi-function Adapter Board Voltage and Current Measurement for T for R138.37

Buy WITRN-POW001 Multi-function Adapter Board Voltage and Current Measurement f for R149.00

Buy 3pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module for R381.22

Buy PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver for R173.55

MAX31855 K Type Thermocouple Breakout Board Temperature Measurement Module For Arduino Feature: Thermocouples are very sensitive, requiring a good amplifier with a cold-junction compensation reference. This product does everything for you, and can be easily interfaced with any microcontroller, even without an analog input. This breakout board has the chip itself, a 3.3V regulator with 10uF bypass capacitors and level shifting circuitry, all assembled and tested. Comes with a 2 pin terminal block (for connecting to the thermocouple) and pin header (to plug into any breadboard). Description: Measurement temperature range: -200 °C to 1350 °C SPI interfaces, high-speed transmission The input voltage: 3-5v DC Direct digital output temperature value, no amplifiers, no ADC 14-bit resolution, 0.25 degree temperature accuracy Note: Works with any K type thermocouple K thermocouples have about ±2°C to ±6°C accuracy Internal temperature reading 3 to 5v power supply and logic level compliant! SPI data output requires any 3 digital I/O pins. Packing includes: 1 x Thermocouple Breakout Board

Overview: Robot: bit is a functionable expansion board for Micro: bit, which supports makecode graphical programming and Python programming. It is different from the general expansion board on the market, not just IO adapter board. This expansion board also integrates other function chips, but also has other extension function. Features: 1. Plug and play, compatiable with Micro:bit 2. With Lego mounting holes, compatiable with KittenBot 3. 4 full-color RGB lights 4. 8 way servo control interface (external power supply supports up to 8-way, bulit-in board battery supports up to 2-way) 5. 4-way DC motor / 2-way 28BYJ stepper motor 6. With miniature buzzer 7. P0-P2IO port 3PIN transfer 8. With 18650 battery port 9. With power management chip and charging circuit 10. With power and battery indicator Specifications: Size: 7.8 x 5.7 x 5.3cm Net weight: 32.8g Thickness of PCB board: 1.6mm Diameter of small hole: 3.0mm Diameter of big hole: 4.8mm Voltage of battery: 3.7V USB input voltage: 5V Software: 1. Robot:bit 2. Micro:bit Package Included: 1x Robot:bit expension board (do not include 18650 battery and microbit) 1x Safty guide

Functional Overview CPU Allwinner V3S, ARM Cortex-A7, up to 1.2GHz Memory and storage Integrated 64MB DDR2 Reserved SOP8 SPI Flash pad (customizable patch 8~32MB SPI Nor Flash, 128MB Nand Flash) Onboard half-slot TF card holder, can be started by TF display Universal 40P RGB LCD FPC Socket Can be directly inserted into the common 40P 4.3/5/7 inch screen (onboard backlight driver), through the adapter board can be inserted 50P 7/9 inch screen Support common 272x480, 480x800, 1024x600 and other resolutions On-board resistive touch screen chip supporting resistive screen Onboard RGB LED Communication Interface SDIO x2, can be used with the SDIO WiFi+BT module SPI x1, I2C x2, UART x3 100M Ether x1 (with EPHY) OTG USB x1 MIPI CSI x1 Other interface PWM x2 LRADC x1 Speakerx2 + Mic x1 Electrical characteristics Micro USB 5V power supply; 2.54mm pin 3.3V~5V power supply; 1.27mm stamp hole power supply Output 3.3V and 3.0V (AVCC), optional input RTC voltage 1GHz linux no-load running current 90~100mA, full load running current ~180mA Storage temperature -40~125°C, operating temperature -20~70°C Software function: Support linux 3.4 bsp kernel, linux 4.16 mainline kernel Support Qt, python and other common linux applications Size and weight Core board size 25.4x45.0mm Development board size 47.0x47.0mm Core board weight 5.0±0.1g Development board weight 14.5±0.5g Precautions start up Zeros requires the card to start (or solder SPI flash), only plug in the USB without any phenomenon System debug serial port UART0, specific position reference pin diagram USB interface OTG usb, power and communication Bottom debugging It is recommended to use usb to serial port small board to connect "U0T R" and "G 5V" Operating temperature -20~85??/span> Running current Running Linux no-load current is about 100mA, full load current is about 150~180mA, and LCD current is about 200~300mA. No card power-on current is about 50~60mA Reference info. (Can click for more detail): 1. Document 2. Github 3. BBS 4. Wiki 5. E-mail: support@sipeed.com Package Included: 1x Lichee pi board 1x Plug 2x Pins

Buy 5pcs 3-30V DC 0.56 Inch Voltage Meter Board LED Amp Digital Voltmeter Measurement for R278.00

Description: low noise amplifierLNA2-2G-64DB 1. Power supply voltage:12VDirect(Current 70MA)Shielding enclosure 2. Gain:64DB input and output impedance: 50 ohm 3. Maximum output power:10dBm (2VPP50Under ohmic load) 4. Input signal: 5. Bandwidth, bandwidth:1MHzreach(2GHzDifferent frequency gain is different, specific please refer toS21Curve index) 6. Noise coefficient:2dB (0.5GHzCase measurement) 7. Other: the need for different gain values, you can reduce the supply voltage 8. Point frequency gain:GAIN=63.41 dB F=30.29MHZ GAIN=66.43 dB F=310.2MHZ GAIN=64.54dB F=620.2MHZ GAIN=55.59 dB F=1.210GHZ GAIN=48.18 dB F=1.590GHZ GAIN=38.44 dB F=1.810GHZ GAIN=39.58 dB F=2.000GHZ Vector network analyzer measurement: Figure 1:AV36580AMeasurement of vector network analyzer S21 value Chip S21 parameters: Package included: 1 x 0.1-2GHz 64dB Gain RF Broadband Amplifier Board

5Pcs Socket Adapter Module Board For 8 Pin NRF24L01+ Wireless Transceiver Module Specification: Voltage: 3.3V It's for 8 Pin NRF24L01+ Module A simple socket board which is for NRF24L01 wireless module On-board AMS1117-3.3 chip It can be used with NRF24L01 wireless module Dimension: 26 x 19 x 12mm Note: Wireless module operating voltage is generally 3.3V, while the ordinary 51 microcontroller 5V, this module is wireless module with 51 single system board used in conjunction. Data Link: https://pan.baidu.com/s/1o6ug0yu Package included: 5 x Wireless Socket Adapter Module Board

5V-12V DC Brushless Motor Driver Board Controller For Hard drive motor 3/4 wire Features:   Reverse voltage protection Over current protection Easily wiring Voltage 5-12V can turn, the higher the faster, maximun reach approx. 10000rpm Suitable for hard brushless motor, brushless motor drive and other miniature 3-wire or 4-wire brushless motor without hall.   Specifications:   Drive Voltage: DC 5-12V Work Current: ≤1.2A Speed Range: 0% - 100% Dimension: 46 X 61 mm / 1.81''X2.40''   Package Included:   1 X Brushless Motor Driver Board   NOTE: For different monitors, the color may vary slightly. Besides, please allow some errors of manual measurement, thank you for your understanding!

Specification: Voltage: 3.3V It's for 8 Pin NRF24L01+ Module A simple socket board which is for NRF24L01 wireless module On-board AMS1117-3.3 chip It can be used with NRF24L01 wireless module Dimension: 26 x 19 x 12mm Note: Wireless module operating voltage is generally 3.3V, while the ordinary 51 microcontroller 5V, this module is wireless module with 51 single system board used in conjunction. Data Link: http://pan.baidu.com/s/1o6ug0yu Package included: 1 x Wireless Socket Adapter Module Board

Specifications: Size: 43*10*2.5mm Charging voltage: DC 9V Current: 4A Balance: YES Features: Built-in high-precision voltage detection circuit. Connect the terminals of the charger with high withstand voltage devices. Built-in three overcurrent detection circuit (overcurrent 1, overcurrent 2, load short circuit). Through the MOS tube can control the current charge and discharge. Wide operating temperature range: -40 ??~ +50 ?? Low current consumption. Description Of Welding Points: B+: Connect the battery positive B-: Connect the battery negative P+: Connect / discharge side positive (shared with the charging side and the discharge side) P-: Receiver / Discharge terminal negative (shared with the charging side and the discharge side) Note: Due to the manual measurement, there might be some errors, please understand. Package included: 1 x lithium battery protection board

2Pcs Socket Adapter Plate For 8Pin NRF24L01+ Wireless Module Feature: Quantity: 2 Voltage: 3.3V Size: 26 x 19 x 12mm It's for 8 Pin NRF24L01+ Module A simple socket board which is for NRF24L01 Wireless module on-board AMS1117-3.3 chip It could be used with NRF24L01 Wireless module Wireless module operating voltage is generally 3.3v, while the ordinary 51 micro-controller 5v, this module is wireless module with 51 single system board used in conjunction Package included: 2 x Socket Adapter

10Pcs MB102 Breadboard Module Adapter Shield 3.3V/5V For Arduino Board Description: Breadboard power supply module, compatible with 5 V, 3.3 V Apply to MB102 breadboard Input voltage: 6.5-12 V (DC) or USB power supply Output voltage: 3.3V/5V can switch over Maximum output current: Fluctuation two road independent control, can switch over to 0 V, 3.3 V, 5 V On-board two groups of 3.3V, 5V DC output plug pin, convenient external lead use. Size: 5.3*3.2*2.5cm Weight: 12g Please notice: this item only a Power Supply Module, Breadboard is not included. Package included: 10 x Power supply module Breadboard power supply module, compatible with 5 V, 3.3 V.