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TYWE2S (ESP-02S) is a low-cost, small-size WiFi module, the module is packaged with gold fingers, which is convenient for plug-in welding products. The module chip is ESP8285, its built-in memory is 16Mbit, ESP8285 uses built-in flash, which has better antistatic performance than ESP8266.

Technical Specifications

A. Pin definition diagram

B. Module package drawing

C. Application schematic

D. How to program: GPIO0 can be programmed as long as the low level is grounded. After programming, cancel the grounding, otherwise it will not work.

Note

1. The maximum instantaneous current of ESP8285 radio frequency can reach 400~500mA, so the minimum power supply requirement is 500mA. LDOs such as XC6206 and 7533 cannot be used;

2. ESP8285's anti-static ability is slightly weaker. Pay attention to electrostatic protection in the dry season in winter;

3. Based on the 500mA power supply requirement, it is recommended that the wiring between the power supply and the ground is not less than 30mil. If the power line has vias, it is recommended to make 2~3 to prevent PCB production deviation;

4. For better RF performance, please refer to the module placement method in the manual. If the product has certification requirements, it is recommended that there is no parallel wiring near the PCB antenna, and the download interface should be reserved far from the antenna pad;

5. It is recommended to erase the module before downloading the program, otherwise there may be some failure to start;

6. If the module fails to start normally and keeps restarting, it is recommended to check the power supply line, including power supply material parameters, power trace width, vias on the power trace, diodes connected in series to the power supply, etc.

What's in the box?

1 x ESP-02S Wi-Fi Module TYWE2S ESP8285

 Features

• The IC conduction heatsink pad is 100% brand new and high quality.
• The pad has stickiness, good conduction, you can easily put it on IC and heatsink, you can fit it on LED IC SMD DIP or others.

Specific

• Material:conduction silicone
• Thickness: 2mm
• Weight:2.8kg
• Continuous Temp: -40 Degrees-260 Degrees
• Thermal Conductivity: 3.2w/m-K
• Breakdown Voltage: 4kv/mm
• Size:15x15x2mm

What's in the box?

1 x 36PCS Lot 15X15x2mm White SMD DIP IC Chip Heatsink Thermal Paste Pads

Features

• The IC conduction heatsink pad is 100% brand new and high quality.
• The pad has stickiness,good conduction,you can easily put it on IC and heatsink,

Specific:

• Material:conduction silicone
• Thickness: 2mm
• Weight:245g
• Continuous Temp: -40 Degrees-260 Degrees
• Thermal Conductivity: 3.2w/m-K
• Breakdown Voltage: 4kv/mm
• Size:25x25x2mm
• Package include:80x   25x25x2mm

What's in the box?

1 x 80PCS Blue Thermal Heatsink Conductive Silicone Pad

Specifications:

• 5V DC fan for 3D Printers
• 40x40x10mm

What's in the box?

1 x 5V 40mm DC Fan for 3D Printer

The ULN2003 is one of the most common motor driver ICs, consisting of an array of 7 Darlington transistor pairs, each pair is capable of driving loads of up to 500mA and 50V. Four out of seven pairs are used on this board.

The board has four LEDs that show activity on the four control input lines (to indicate stepping state). They provide a nice visual when stepping.

The board also comes with an ON/OFF jumper to isolate power to the stepper Motor.

Specifications

• ULN2003 driver
  
• Suitable for microcontroller development
  
• Voltage: DC 5V
  

What's in the box?

1 x ULN2003 driver

Resources

How to control a ULN2003 stepper motor with Raspberry Pi

LCD Digital Mini Handheld Multimeter AC/DC 750/1000V With Probe


LCD Digital Multimeter AC/DC 750/1000V Handheld multimeter for voltmeter, ammeter Ohm tester meter with probes.


Specifications

• DIY Supplies: ELECTRICAL
• Certification: NONE
• Origin: CN(Origin)
• Model Number: Digital Multimeter
• AC Current: /
• AC Voltage: 2-750V
• Measuring Resistance Range: 20k-2000k
• Operating Mode: Manual
• Measuring Inductance Range: /
• Display Type: Digital Display
• DC Current: 200u-2000u-20m-200m-10A
• DC Voltage: 200m-2000m-20-200-1000V
• Measuring Capacitance Range: /
• Dimensions: 190mm x 90mm x 30mm
• Operating Temperature: 0 - 40 ℃
• Colour: Black/Yellow

What's in the box ?

These are suitable for DIY projects and the Raspberry Pi pcb as the outside diameter is only 2.5mm that fits in the Pi mounting holes.

Brass standoffs are essential components in electronic projects, particularly in applications where circuit boards need to be securely mounted within an enclosure or chassis.

Here's how they are typically used:

1. Board Mounting: Brass standoffs are used to elevate and secure printed circuit boards (PCBs) within an electronic enclosure or chassis. They provide a stable platform for the PCB, preventing it from coming into contact with conductive surfaces that could cause short circuits.

2. Mechanical Support: Standoffs act as spacers between the PCB and the mounting surface, ensuring proper ventilation and preventing heat buildup. This is crucial for maintaining the integrity of sensitive electronic components.

3. Isolation: Brass standoffs help to electrically isolate the PCB from the chassis or enclosure. This isolation is essential for preventing electrical interference, reducing the risk of noise and signal degradation, and enhancing overall circuit performance.

4. Easy Access: Standoffs facilitate easy access to the PCB for maintenance, repairs, or upgrades. By raising the board above the mounting surface, technicians can easily reach components and make necessary adjustments without disassembling the entire system.

5. Vibration Dampening: In applications where vibration is a concern, brass standoffs can help dampen vibrations transmitted to the PCB, thereby reducing the risk of component failure or solder joint fatigue over time.

6. Grounding: Depending on the design, brass standoffs can also be used as grounding points for the PCB. By connecting the standoffs to the ground plane on the PCB, they provide a convenient and reliable grounding solution.

Overall, brass standoffs play a crucial role in ensuring the structural integrity, electrical isolation, and proper functioning of electronic systems. Their versatility and reliability make them indispensable components in a wide range of electronic projects.

What's in the box?

1 x Female Female Standoffs M2.5 x 16mm

Solder wire is a fusible metal alloy with a low temperature melting point used to permanently join two metals that have a higher melting point. Designed for use in electrical and electronic applications and to be environmentally friendly.

Specifications

• Roll Soldering Wire
• CONTAINS LEAD
• Diameter: 1.25 mm
• Net weight: 500g (approx.)
• Great For Electronics and Electrical Wiring

What's in the box?

1 x roll solder wire


Resources

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

Solder wire is a fusible metal alloy with a low temperature melting point used to permanently join two metals that have a higher melting point. Designed for use in electrical and electronic applications and to be environmentally friendly.

Specifications

• Roll Soldering Wire
• CONTAINS LEAD
• 40% Tin
• Diameter: 2.0 mm
• Net weight: 15g (approx.)
• Great For Electronics and Electrical Wiring

What's in the box?

1 x 15g solder wire


Resources

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

Kapton tape offers excellent resistance to heat, and it is designed to be used on a series of electric masks. Ideal for wave solders, circuit board insulation, and powder coating on high temperatures, the tape has a high dielectric strength.

Also great for insulating the Hotend on your 3D printer.

Application

• High temperature masking tape
• Frequency conversion power supply in the electronics industry. Also use as perfect heat resistance ribbon on 3d printing, powder coating, etc
• PCB protection during wave soldering
• Insulation on transformers, motors and coils
• Fiber Optic Cables
• Solar panels

Specifications

• 100% new and high quality
• Material: Polyimide
• Color: Brown Metallic
• Width: 25mm
• Length: 30 M
• Long term temperature: 260 ° C degrees
• Short term temperature: 300 ° c.

What's in the box?

1 x 25mm Kapton Tape

Specifications

• Module Type: Buck converter
• Input: 7V to 20V
• Output: 5V
• Output current: 3.4A(max)
• Overcurrent protection: Yes
• Over temperature protection: Yes(overheating shutdown requires cooling before use)
• Conversion efficiency: 90%~97%

Specifications

• Module Type: Buck converter
• Input: 7V to 20V
• Output: 5V
• Output current: 3.4A(max)
• Overcurrent protection: Yes
• Over temperature protection: Yes(overheating shutdown requires cooling before use)
• Conversion efficiency: 90%~97%

This kind of 8 way joystick is originally used in arcade games, but we think it is a good solution for DIY projects that need multiple frequency buttons. There is 4 micro switches that detect the stick position and users can easily get the stick positions by reading the voltage output from the connector with a controller such as Arduino and Raspberry Pi.

Features 

• 8 way operation.
• Mountable in control panels.
• Easy to operate with high sensitivity.
• Use it to DIY your own Arcade gaming machine.

Specifications 

• Top Ball Diameter: Approx. 35mm
• Total Size: Approx. 95x60x100mm

1 x Joystick
Cables not included

Resources
 

• Learn about RetroPie
• Compatible with Zero Delay Arcade USB Encoder & Wire Set (Not included)
  
• Compatible buttons
  
  

Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent power supply noise rejection, so this amplifier sounds really good and isn't nearly as noisy or scratchy as other mic amp breakouts we've tried!

This breakout is best used for projects such as voice changers, audio recording and audio-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x. That's down to be about 200mVpp (for normal speaking volume about 6" away) which is good for attaching to something that expects 'line level' input without clipping, or up to about 1Vpp, ideal for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds gets loud, the output can go up to 5Vpp!

What's in the box?

1 x GY-MAX4466 Electret Microphone Amplifier Module

Resources

Using it is simple

Connect GND to ground, VCC to 2.4-5VDC.
For the best performance, use the "quietest" supply available (on an for Arduino, this would be the 3.3V supply). The audio waveform will come out of the OUT pin. The output will have a DC bias of VCC/2 so when its perfectly quiet, the voltage will be a steady VCC/2 volts (it is DC coupled). If the audio equipment you're using requires AC coupled audio, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an audio amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required. The output pin is not designed to drive speakers or anything but the smallest in-ear headphones- you'll need an audio amplifier (such as 3.7W stereo amp) if you want to connect the amp directly to speakers. If you're connecting to a microcontroller pin, you don't need an amplifier or decoupling capacitor - connect the OUT pin directly to the microcontroller ADC pin. For audio-reactive projects, we suggest using an FFT driver library which can take the audio input and 'translate' it into frequencies.

• Colour : Gold
• Size : 70mm x 69mm x 69mm

NFC NTAG213 tag stickers are small adhesive tags that use Near Field Communication (NFC) technology to wirelessly transfer data when placed close to a compatible device, like a smartphone. The NTAG213 chip is specifically designed for simple and versatile NFC applications, featuring a memory size of 144 bytes and operating at a frequency of 13.56 MHz. These stickers are popular for a wide range of applications, including:

1. Smart Home Automation: Can be placed on objects or around the house to trigger actions on NFC-enabled smartphones, such as turning on lights or setting up scenes.
  
2. Contactless Sharing: Used for storing small amounts of information like URLs, contact information, or Wi-Fi credentials, making it easy to share with others by tapping a smartphone.

3. Inventory and Asset Management: Can be used in retail, warehouses, or offices for tracking items, verifying authenticity, or updating inventory records quickly with a mobile device.

4. Marketing and Event Management: Often used in events, businesses, or museums where visitors can tap their phones on the sticker to get more information about an exhibit, product, or promotion.

5. Access Control: Can be programmed to unlock doors or perform secure actions when authenticated with compatible devices.

These tags are typically very affordable, making them a popular choice for many personal and business-related NFC applications.

What's in the box?

5 x 13.56MHz RFID stickers

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

What's in the box?

1 x Anti-static wrist band with 180cm grounding lead

Need more I/O's on your microcontroller? You need an MCP23017 port expander chip!

It uses two i2c pins (which can be shared with other devices if required) and in exchange gives your microcontroller another 16 GPIO's! Each I/O pin can be configured as an in input, output or input with a pullup.

The chip can also be configured for interrupts for when an input changes, so you don't need to keep polling the chip!

This one comes in a DIP package, so it's great for breadboarding! You can also set the i2c address for up to 8 unique chips on the same i2c bus, which means you can daisy-chain these IC's to give you up to 128 I/O's!

Don't forget to grab a matching IC DIP socket for your project!

Features

• 16 bit remote bidirectional I/O port
• High-speed I2C interface
• Three hardware address pins to allow up to eight devices on the bus
• Configurable interrupt output pins
• INTA and INTB can be configured to operate independently or together
• Configurable interrupt source
• Polarity Inversion register to configure the polarity of the input port data
• External Reset input
• Low standby current: 1?A max.

Applications

• Automation & Process Control
• Automotive
• Clock & Timing
• Consumer Electronics
• Defence, Military & Aerospace
• Embedded Design & Development
• LED Lighting
• Industrial
• Motor Drive & Control

Specifications

• Bus Frequency: 1.7MHz
• Chip Configuration: 16bit
• IC Interface Type: I2C, Serial
• Interface Case Style: DIP
• No. of I/O's: 16
• No. of Pins: 28
• Supply Voltage Max: 5.5V
• Supply Voltage Min: 1.8V

What's in the box?

1 x MCP23017 Port Expander

Resources

• Datasheet
• Adafruit Adruino Library
• Raspberry Pi MCP23017 Tutorial