• Display Colour: Blue
• The black line connects to the negative and the red line connects to positive pole of power source
• 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

This is a common model esp-01 breadboard adapter for esp8266 serial to WiFi transceiver module. Because the pin arrangement of ESP-01/ESP-01S is not breadboard friendly and has no label, it is not convenient for rapid prototyping. This breadboard adapter will help you make it easier to use the esp-01 module prototype. This breakthrough conveniently provides a clear lead out screen at the top and will be well suited to your favorite breadboard.

Last but not least, we added a 0.1μF decoupling capacitor, so esp-01 will always run smoothly without hindrance.

Soldering is required to fit the headers

What's in the box?

1 x ESP-01 Bread Board Adapter
2 x 4 pin headers

The ESP-01S is an upgraded version of the original ESP-01 module, built around the ESP8266EX chip from Espressif. It's a compact, low-cost WiFi module that adds wireless networking to any microcontroller project with minimal extra hardware.

Unlike the original ESP-01, the ESP-01S includes an improved onboard power management circuit, giving it more stable operation — particularly useful when connecting via USB-to-serial adapters that can't always supply clean, sufficient current. It also adds a blue status LED on GPIO2 for quick visual feedback during flashing or operation.

The module ships pre-programmed with AT command firmware, so it can be connected straight to an Arduino (or any 3.3V-tolerant microcontroller) via UART and controlled with simple serial commands — no additional firmware flashing required for basic use. For more advanced projects, it's also fully compatible with the Arduino IDE and NodeMCU/Lua firmware for custom programming.

Key Specifications:

• Chip: ESP8266EX (Tensilica L106 32-bit low-power MCU)
• WiFi: 802.11 b/g/n, 2.4GHz
• Flash memory: 1MB
• Operating voltage: 3.3V (do not connect to 5V)
• I/O voltage tolerance: 3.6V max
• Serial interface: UART (default baud rate 115200 bps; some firmware versions use 9600)
• Onboard status LED (GPIO2)
• Pin count: 8-pin (VCC, GND, TX, RX, CH_PD/EN, RST, GPIO0, GPIO2)

Typical uses:

• Adding WiFi connectivity to Arduino or other microcontroller projects
• IoT sensor nodes and remote monitoring
• Basic home automation and smart switches
• Low-cost prototyping before moving to a full ESP32/ESP8266 dev board

Note: The ESP-01S operates at 3.3V logic and is not 5V tolerant — a logic level shifter or direct 3.3V microcontroller connection is required when interfacing with 5V boards like a standard Arduino Uno. A separate USB-to-serial programmer (e.g. an ESP-01/ESP-01S USB adapter) is recommended for flashing custom firmware. We also stock a breadboard adapter for use in your projects.

What's in the box?

1 x ESP8266 ESP-01S WiFi Serial Transceiver Module

Respurces

Instructables.com offer some help on this board as well as on medium.com

Tired of holding down a button every time you want to flash your ESP-01 or ESP-01S? This little adapter takes care of that for you. It uses the CP2104 USB-to-serial chip along with an auto-download circuit, so your module drops into flash mode automatically — just plug in, hit upload, and you're good to go.

It plays nicely with all the usual tools — Arduino IDE, ESP8266 Flasher, and Lexin's FLASH_DOWNLOAD_TOOLS — so whether you're a first-timer flashing your very first "Hello World" or you're constantly tweaking firmware on a stack of ESP-01s, this adapter takes the fiddly part out of the process.

What it does:

• Plugs your ESP-01 / ESP-01S straight into USB for programming
• CP2104 chip handles the USB-to-serial conversion
• Auto download mode — no manual button-holding to get into flash mode
• Works with Arduino IDE, ESP8266 Flasher, and FLASH_DOWNLOAD_TOOLS
• Handles firmware flashing, updates, and serial debugging

Great for:

• Anyone building ESP8266 projects who's tired of the "button dance"
• Quick firmware updates without extra fuss
• IoT tinkering, prototyping, and general ESP-01/01S experimentation

What's in the box?

1 x ESP-01/ESP-01S CH340 USB Programmer with Switch

• Colour: Black
• Buzzer Type: Piezoelectric
• Sound Pressure Level 85 dB
• Rate Voltage: 12V DC
• Operating Voltage: 3 - 24V
• Max Current Rating 11mA
• Frequency 3900±500Hz
• Drive Method: Drive Circuit Built in
• Mounting Holes

• Python library
• Using a Buzzer With a Raspberry Pi

• This product is mainly used for water metering
  
• High amplitude ≥ 4.6V
  
• Low amplitude ≤ 0.5V
  
• Electric strength 1250V/min
  
• Insulation resistance ≥ 100MΩ
  
• Hydrostatic pressure testing ≤ 2.0Mpa
  
  

• The lowest rated working voltage: DC4.5 5V-24V
  
• Maximum operating current: 15 mA (DC 5V)
  
• Working voltage range: DC 5~18 v
  
• Load capacity: ≤ 10 mA (DC 5V)
  
• Use temperature: ≤ 80°C
  
• Operating humidity range: 35%~90%RH (no frost)
  
• Allowing pressure: pressure 2.0Mpa
  
• Temperature: -25~ 80 °C
  
• External threads: 1/2"
  
• Outer diameter: 20mm
  
• Intake diameter: 9mm
  
• Outlet diameter: 12mm
  
  

• Joystick Size: Approx. 95x60x100mm
• Encoder Board Size: Approx. 85x35mm
• USB Cable Length: Approx. 1.8m
• Colour: Red

• View the project details here
• And some more help here
• Article specific to the anemometer only

• Model: F695ZZ
• Material: Chrome Steel
• Size: 5mm x 13mm x 4mm

• Temperature measurement range: -55°C ~ +125°C
  
• Accuracy: ± 0.5°C
  
• Encapsulation: TO-92

• Type:Field-Effect Transistor
  
• Brand Name: International Rectifier
  
• Package Type: Throught Hole
  
• Model Number: IRFZ44NPBF
  
• TO-220AB: MOSFET N-Channel, Metal Oxide
  
• 55V 49A: FETs - Single
  
• Mosfet Type : N-channel
  
• Current Rating : 49A
  
• Rds (On) : 17.5mΩ
  
• Voltage Rated : 55V

• 250 V
• 3A
• 10mm x 15mm
  
  

Strip board is Ideal for development and prototype work and intended primarily for wiring discreet components, particularly in analogue circuits.

Specifications

• Type: Single Sided
• Base Material: Bakelite
• Thickness: approx. 1.5mm
• Hole Pitch: approx. 2.54mm
• Hole Diameter: approx. 1.0mm
• Size: approx. 65mm x 145mm

What's in the box?

5 x DIY Prototype PCB Board

Resources

Introduction to soldering
Video: How to solder properly
The secrets to good soldering

Rocker Switches house a button for operation that can be pressed on either end like a seesaw to connect or disconnect an electrical circuit. They are often used as ON/OFF switches on the main power supplies for electronic devices.

Features

• Rating: 3A 250V
• Mounting hole: 20mm
• Poles: SPST
• Terminal: 2-Pin(ON-OFF)
• Contact resistance: ≤30mΩ
• Insulation resistance: ≥100MΩ at 500V DC
• Dielectric strength: 1500V AC for 1 minute
• Operating temperature: -25°C - 85°C
• Electrical life: 10000 cycles
• Colour: black

What's in the box?

1 x Mini round black rocker switch

Resources

Introduction to Buttons and Switches
Types of buttons and switches

• Wide Supply Voltage range : 2.4V - 5.5V
• Lightning Sensing: 40 km Range with accuracy of 1km in 14 steps
• Detects both cloud-to-ground and cloud-to-cloud flashes
• Embedded ‘man made’ disturbance rejection algorithm
• Programmable Detection Levels,Lightning detection thresholds are programmable (outdoor vs indoor, for example)
• Distance to storm estimation
• "Disturber" (false event) rejection algorithm
• Indoor and Outdoor Settings
• SPI and I2C Interfaces
• Qwiic Enabled

This tiny but powerful 30mm fan can be used in any electronic projects, with MCUs, and even to keep your Raspberry Pi cool.

Now with a narrower form factor to fit a wider range of enclosures

Specifications

• Dimensions: 30x30x07mm
• Bearing Type: Sleeve
• Connector: 2PIN
• Rated Voltage: DC 5V, Rated Current: 0.1A
• Airflow: 4.2CFM
• Fan Blade: 7 Blades
• Fan Speed: 5000RPM±10%
• Noise Level: <16dBA±10%

What's in the box?

1 x DC Fan 30x30x7mm
4 x M2.5 x 14 screws
4 x M2.5 nuts

Resources

3.3V connection to the GPIO on the left and 5V on the right.

Features

• Name: MPU-6050 module (three-axis gyroscope triaxial accelerometer)
• 2.54mm pin spacing
• MPU-6050 Accelerometer Gyro

The MPU-6050 sensor contains a MEMS accelerometer and a MEMS gyro in a single chip. It is very accurate, since it contains 16-bits analog to digital conversion hardware for each channel. Therefor it captures the x, y, and z channel at the same time.

Specifications

• 16bit AD converter-chip, 16-bit data output
• Use Chip: MPU-6050
• Power supply :3-5v (internal low dropout regulator)
• Communication: IIC communication protocol standard
• Gyro Range: ± 250 500 1000 2000 ° / s
• Acceleration range: ± 2 ± 4 ± 8 ± 16g
• Using Immersion Gold PCB, welding machines to ensure quality
• Size: 20mm x 16mm x 10mm

Application

• Motion sensing games
• Augmented Reality
• Electronic Image Stabilization (EIS: Electronic Image Stabilization)
• Optical Image Stabilization (OIS: Optical Image Stabilization)
• "Zero-touch" gestures User Interface
• Pedestrian navigation
• Gesture shortcuts

Market

• Smart phone
• Tablet device
• Handheld games
• 3D remote controller
• Portable navigation devices

What's in the box?

1 x MPU-6050 module

• Support: S50/S70 and other ISO14443A card
• Operating system: Windows 98/XP/2000/CE/7/ME/NT/LINUX
• Reading distance: 0-8 cm
• Reading speed: 0.2S
• Working temperature: -20 C - 85 C
• Working voltage: 5V
• Working current: 200mA
• Work instruction: LED, Beeps

• Material: oxygen-free copper
• Female : Europe CEE7/16
• Male: IEC320 C14
• Cable Type: H03VVH2-F
• Wire diameter: 2 x 0.75mm2
• Voltage: 250V
• Amperage : 10A
• Cable Length:  30cm