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BME280 is a high-precision, small-volume, low-energy pressure sensor that can be used in mobile devices. Its performance is excellent, the absolute accuracy can be as low as 0.2Pa, and the power consumption is very low, only 2.7uA. The BMP280 uses a powerful 8-pin ceramic leadless chip in a thin carrier (LCC) package, which can be directly connected to various microprocessors through I2C and SPI buses.

Features

• Pressure range: 300~1100hPa (altitude 9000m~-500m) Power supply voltage: 1.71V~3.6V
• LCC8 Package: Lead-Free Ceramic Carrier Package (LCC)
• High precision: 0.06hPa (0.5m) resolution in low power mode, 0.2Pa (1.7cm) resolution in high linear mode temperature output
• 12C interface, SPI interface temperature compensation
• Temperature compensation
• Size: 1.5cmx 1.15cm
• Low power consumption: 2.7uA
• No external clock circuit required

Typical application

• GPS precise navigation (dead reckoning, upper and lower bridge detection, etc.) indoor and outdoor navigation
• Monitoring weather forecast for leisure, sports and health care
• Vertical Speed Indication (Rise/Sink Speed) Fan Power Control

Specifications

• Supply Voltage: 1.8 - 5V DC
  
• Interface: I2C (up to 3.4MHz), SPI (up to 10 MHz)
  

Operational Range:

• Temperature: -40 to +85°C
  
• Humidity: 0-100%
  
• Pressure: 300-1100 hPa
  

Resolution:

• Temperature: 0.01°C
  
• Humidity: 0.008%
  
• Pressure: 0.18Pa
  

Accuracy:

• Temperature: +-1°C
  
• Humidity: +-3%
  
• Pressure: +-1Pa
  

I2C address

• SDO LOW : 0x76
  
• SDO HIGH: 0x77

What's in the box?

1 x bme280 sensor
1 x header

Resources

The Raspberry Pi Foundation Project

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 18mm

• 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

• 100% new and high quality
• Material: Polyimide
• Color: Brown Metallic
• Width: 5mm
• Length: 22 M
• Long term temperature: 260 ° C degrees
• Short term temperature: 300 ° c.

• Shape: Block
• Tolerance: ±1mm
• Material: NdFeB permanent Magnets
• Grade: N35
• Max Operating Temperature: 80 Celsius degree / 176 Fahrenheit degree
• Magnetization Direction: Axial
• Plating: Nickel+Copper+Nickel triple layer plated

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

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.

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

Specifications

• Module Type: Buck converter
• Input: 8V to 90V
• Output: 5V
• Output current: 5A(max)
• Conversion efficiency: up to 96%
• Size: 46mm x 32mm x 18mm

This is split-core current transformer is an AC current sensor. It is used for current measurement, monitor and protection for AC motors, lighting equipment, air compressors, home automation etc.

Features

- Opening size: 13x13mm
- Rated input current (RMS): 10% - 120% of that is 3A - 63A
- Output voltage(RMS): linear output. When the input current is 60A, the output voltage is 1V
- Linearity: ± 3%
- Output connectors: 3.5mm standard three-pin plug
- Lead length: 1 m

What's in the box?

1 x Current sensor


This sensor is perfect for use with our Raspberry Pi RPICT3T1 current and temperature sensor board.

Specifications

• Size: 62mm(L)x44mm(W)x23mm(H)
• Input Voltage (Trigger): DC 3-32V
• Output Voltage(Line): AC 24-380V
• Output Current(Line): 60 A
• On Voltage: ≤1.6V
• OnOff Time: ≤10ms
• Control Current: 3-35mA
• Transparent Lid Included: Yes

What's in the box?

1 X 60A SSR-50DA Solid State Relay With Cover

Resources

Datasheet available at https://cdn.sparkfun.com/datasheets/Components/General/SSR40DA.pdf
Depending on how hard your relay works, you might want to add a heat sink to it.

Q:During continuity testing with my multimeter why does my relay on the AC side not switch on?
A: The below info was found at http://www.crydom.com/en/tech/newsletters/solid statements - bench test an ssr.pdf

A multimeter determines impedance by injecting a small amount of voltage through it's probes into the circuit being tested. It then measures the current flowing through the probes and calculates resistance. Easy enough; Resistance = Voltage / Current! However, as we just discussed above, a solid state relay’s output turns on by “stealing” a bit of voltage from the AC mains in order to supply current to the gate of the SCRs. Simply put, if the AC mains is not connected to the relay then the output cannot turn on. Since the voltage and current produced by a multimeter is not sufficient enough to turn on the SCRs, the output of a solid state relay will remain in the off state; even with the input signal applied. As a result, SSRs will sometimes fail an incoming inspection because the engineer expects to see a significant change in the output impedance when they turn on the relay.The most effective way to bench test a solid state relay is to construct a simple test circuit consisting of a DC power supply or battery (a 9Vdc battery will work fine in most cases ) and a 60W or 100W light bulb.

Specifications

• Chip: WS2812B (built-in LED)
• LED: 5050 package RGB full-color highlight
• Voltage: 5V
• Port: digital

Main features

●The IC control circuit and the LED point light source share a power supply.
The control circuit and the RGB chip are integrated in a 5050 package component to form a complete externally controlled pixel point.
·Built-in signal shaping circuit, any pixel point receives the signal and then outputs it after waveform shaping, ensuring that the line waveform distortion will not accumulate.
●Built-in power-on reset and power-off reset circuits.
●The three primary colors of each pixel point can achieve 256 levels of brightness display, and complete the full-color display of 16777216 colors.
●Port scanning frequency 2KHz/S
Serial cascade interface, which can complete data reception and decoding through a signal line,
·No need to add any circuit when the transmission distance between any two points does not exceed 5 meters.
●When the refresh rate is 30 frames/second, the number of cascades is not less than 1024

Main application areas

●LED full-color luminous character light string, LED full-color soft light bar hard light bar, LED guardrail.

●LED point light source, LED pixel screen, LED special-shaped screen, various electronic products, electrical equipment marquee.

What's in the box?

1 x WS2812 LED 5050 RGB 8x8 LED Matrix board