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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
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:
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.
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.
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.
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.
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.
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 Male Female Standoffs M2.5 x 16mm
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:
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.
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.
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.
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.
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.
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 Male Female Standoffs M2.5 x 16mm
What's in the box?
1 x PD/QCIAFC Fast charge decoy trigger
Features
- Display Colour: Red
- The black line connects to the negative electrode of both the power supply and tested power supply, 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
- Power: 5V, 9V, 12V or 24V without voltage regulation(Working voltage: 4.5V-30V)
- Measuring Range: DC 0V - 100V
- Operating current: 20mA
- Installation dimension: Approx 23mm x 10mm
Features
- Display Colour: Yellow
- The black line connects to the negative electrode of both the power supply and tested power supply, 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
- Power: 5V, 9V, 12V or 24V without voltage regulation(Working voltage: 4.5V-30V)
- Measuring Range: DC 0V - 100V
- Operating current: 20mA
- Installation dimension: Approx 23mm x 10mm
Features
- Display Colour: Blue
- The black line connects to the negative electrode of both the power supply and tested power supply, 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
- Power: 5V, 9V, 12V or 24V without voltage regulation(Working voltage: 4.5V-30V)
- Measuring Range: DC 0V - 100V
- Operating current: 20mA
- Installation dimension: Approx 23mm x 10mm
Features
- Display Colour: Green
- The black line connects to the negative electrode of both the power supply and tested power supply, 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
- Power: 5V, 9V, 12V or 24V without voltage regulation(Working voltage: 4.5V-30V)
- Measuring Range: DC 0V - 100V
- Operating current: 20mA
- Installation dimension: Approx 23mm x 10mm
3D printing plastics often have low yield strength and cannot reliably produce threaded features. Embedded metal nuts provide stronger and more precise threading for hidden fasteners. The nut melts and reflows the plastic around it, enhancing its strength. However, there are design constraints - the nut must be on a part face and cannot be reinforced beyond the plastic's properties.
Specifications
- Thread Size: M3
- Height: 4mm
- Outer Diameter: 5mm
- Material: Brass
What's in the box?
1 x Brass Heat Threaded Inserts Embedment Nut
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
1 x 5V 5A Power Adapter
Specifications
- USB 4
- PD3.1
- Resolution: 0.1V/0.1W
- 40Gbps transmission
- 8K/60Hz HD
- Display current/voltage/power
- Dimensions 12.6mm x 32.8mm x 7.4mm
- Type-C bidirectional input-output
What's in the box?
1 x USB-C Voltage/Current/Power Meter
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: NO
What's in the box?
1 X 60A SSR-50DA Solid State Relay
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.
Product Features
1) Compliant with CCID
2) Compliant with PC/SC
3) Support IC/ID dual frequency replication
4) Driver-free, no need to download software installation
5) When connect the RFID Reader to the computer with the USB cable, then can find the software.
6) Support ID125K, 8800, 5200, 4305, 5577, 8265 card.
7) Support UID FUID CUID UFUID IC semi-encrypted card, IC full encryption card.
8) Has USB full speed interface
9) Two-color LED light prompt (red light is standby, green is working)
10) Built-in buzzer "beep" sound reminder
How to use the card reader?
Hot Question:
1) Where can i download the software?
Answer: You can download the software via this link:http://www.nsccn.com/download/soft/nfc/nfcPro_wbw.exe
2) Which chip inside in the 5pcs blue keyfobs and 5pcs white cards?
Answer: If you buy the RFID copier + 5pcs UID keyfobs + 5pcs T5577 cards. The 5pcs UID keyfobs is working with 13.56MHz frequency, used to copy the MF 1k card. The 5pcs T5577 cards is working with 125KHz frequency, used to copy the EM4100, TK4100 cards. They are different type card.
3) Why the 5pcs cards in the package read failure?
Answer: Please don't worry, these 5pcs white cards is T5577 (EM4305) type, they haven no data before write. They will can be read successfully after finished written from your TK4100 or EM4100 type card. Thank you.
What's in the box?
1 x RFID Copier Duplicator 125KHz Key fob NFC Smart Card Reader Writer 13.56MHz Encrypted Programmer USB UID T5577 EM4305 Cards Tags
Product size: 35.5 * 17 * 8.3 mm
Input voltage range: 6 to 26 v
Output voltage: 5.2 V (consider charging line loss, output is about 5.2 V, the load end is around 5 V)
Limit the output current: 3 a (in the absence of radiator, stable output current limit is 2 a)
Note 1: is the cathode can't meet the, and the input voltage can't more than 26 v, otherwise it will result in the chip damage!
Note 2: in current work, not touch on the circuit board sampling resistor, IC, or may result in output voltage mutation damage equipment!
What's in the box?
1 x 9V 12V 24V to 5V 3A USB step-down voltage regulator module DC-DC Converter
What's in the box?
1 x DC-DC Vehicle Charging Board 8V-35V to 5V 8A Power Supply Depressurization Module 4 port USB Output mobile Charger
The RF Remote is a 433MHz Wireless 4 Buttons Push Cover Remote. This Wireless 4 Buttons 433Mhz remote control can remotely control any Sonoff RF products. It’s suitable for long distance and multiple switch control. The remote controller is compatible with 433MHz products like the light switches, RF Bridge, Basic RF and 4Ch Pro RF R2.
Note: This RF Remote contains a battery (A27)
This product can work with our smart home products: Sonoff RF, Sonoff 4CH Pro, Sonoff RF Bridge 433, Sonoff TX2 and TX 3 light Switches.
What's in the box?
1 x 433Mhz Wireless Remote
Resources
These are suitable for DIY projects and the Raspberry Pi pcb as the screw 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:
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.
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.
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.
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.
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.
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 Male Female Standoff M2.5 x 7mm
Tired of useful gadgets? Meet the Useless Box! Flip the switch, and a tiny mechanism pops out to flip it right back off. It's perfectly pointless, delightfully disruptive, and guaranteed to spark a smile (or a chuckle of confusion). The ideal desk toy for those who appreciate the absurd.
What's in the box?
1 x Mini useless box Black
Tired of useful gadgets? Meet the Useless Box! Flip the switch, and a tiny mechanism pops out to flip it right back off. It's perfectly pointless, delightfully disruptive, and guaranteed to spark a smile (or a chuckle of confusion). The ideal desk toy for those who appreciate the absurd.
What's in the box?
1 x Mini useless box Black