Characteristics
1. 4-pin SWIM port for programming or testing
2. The external crystal can be connected via on-board socket
3. All MCU pins are accessible on the expansion connectors

Supported Devices
STM8 microcontroller in QFP64 package (0.5 mm pitch) with compatible pinout
- STM8S207RxTx / STM8S208RxTx
- STM8Ax51x9T / STM8Ax52x9T / STM8Ax61x9T / STM8Ax62x9T

Photo
1. External glass socket
- Insert the crystal into the holes on two sides, regardless of the central hole
2. SWIM door
- For programming / debugging / testing
- Compatible with ST-LINK, ST-LINK/V2, etc.
3. Pin connectors connected to MCU pins
- Clearly labeled with on-board markings
- Easy for testing and further expansion
4. Power indicator
5. Power consumption
- DC5V / 3.3V

Package Contents
1. STM8-QFP64-0.5×1
2. USB power cable × 1

1. Soft start function
2. Conversion efficiency reaches 97%
3. Switching frequency 220kHz
4. Built-in synchronous converter synchronous chip
5. Output voltage range: 3V to 12V, automatically adjusted according to the fast charge protocol
6. Used in car chargers, fast charging adapters, smart power strips, solar chargers, etc.
7. This module is a 4-way drop-down fast charging module, use DC 12V-30V power supply, and the positive and negative poles can not be reversed.
8. Input voltage range: 4.5V to 32V (The input voltage must be higher than the output voltage, because it is a voltage drop module)
9. Multiple protections, high reliability, over voltage output, over voltage input, under voltage input, output short circuit protection, over temperature protection of the whole machine
10. The output has CV/CC characteristics (output current is less than the set value, output CV mode; output current is greater than the set value, output CC mode)
11. PCB adopts 1.6mm FR-4 thickness design, optimized layout and wiring, tight design, open window on the back for heat dissipation, low working temperature under full load, standby current 0.013A, module has output voltage compensation function
12. Each of the four channels supports QC 3.0 fast charging protocol, and can support fast charging at the same time, and can output 5V / 9V / 12V (requires mobile phone protocol support) voltage, the output current is adaptable, the single channel power consumption 24W, 4 channels Module Power Consumption 96W

一. Technical parameters:
1. Working voltage: DC12V (3V/6V/9V/24V customizable)
2. Static working current: ≤10mA
3. Working temperature: -40 degrees Celsius - +80 degrees Celsius
4. Receiving sensitivity: greater than or equal to -95dB
5. Working frequency: commonly used 315MHZ, 433.92MHZ (others can be customized)
6. Output current: less than or equal to 10A
7. Working mode: inching, self-locking, interlock, delay (adjustable)
8. Output mode: contact output (can control AC and DC)
二. Scope of application:
This product is controlled by intelligent microprocessor and can be applied to garage door control, lighting control, remote control curtains, access control systems and various motor control systems, etc. Small size, easy installation, safe and reliable use and so on.
三. Product Features:
1. Output relay switching value: It can control loads with different voltages less than 250V. The power supply must be 12V.
2. Small size: Small size, the size of the circuit board is only 35x30x17mm.
3. The working mode can be adjusted by the user at will: the working mode of self-locking, interlocking, inching and delay can be adjusted by pin short circuit.
4. Code pairing learning: You can learn to pair with the same frequency remote control at will (don't worry if you lose the remote control during use, just buy one remote control and learn it, and you don't need to replace the whole set, which greatly saves user costs).
四. Find out how to use the code:
1. Jog learning method:
Press the pairing button on the control board once and the LED light will flash once, then press the button on the remote control that needs to be paired, and the LED light on the control board will flash several times continuously, indicating that the code pairing is successful.
2. Self-locking learning method:
Press the pairing button on the control board twice in a row, the LED indicator will flash twice, wait until the LED indicator turns off, then press the button on the remote control that needs to be paired, the LED indicator will turn on, the control board will flash several times continuously, indicating that the code pairing is successful.
3. Interlocking learning method:
Press the code binding button on the control board 3 times continuously, and the LED indicator will flash 3 times. After the LED indicator is off, press the A button and B button on the remote control that needs to be coded, and the LED indicator on the control board will flash several times continuously. It indicates that the code binding is successful.
4. 5-second delay learning method:
Press the code pairing button on the control board 4 times in a row and the LED light will flash 4 times. After the LED light goes out, press the button on the remote control that needs to be coded. .
5. Delay learning method by 10 seconds:
Press the code binding button on the control board 5 times continuously, and the LED indicator will flash 5 times. After the LED indicator turns off, press the button on the remote control that needs to be coded. The LED indicator on the control board will flash several times continuously, indicating that the code is successful.
6. 15-second delayed learning method:
Press the code pairing button on the control board 6 times continuously, and the LED light will flash 6 times. After the LED light goes out, press the button on the remote control that needs to be coded. The LED light on the control board will flash several times continuously, indicating that the code pairing is successful.
五. Precautions:
1. Do not operate with the power on. The power must be turned off for operation, and the power must be used after the test is confirmed to be correct.
2. When the voltage of the remote control is low, replace the battery in time (when the battery voltage of the remote control is low, the remote control distance generally becomes shortened).
3. When using wireless electronic products, care should be taken to avoid metal masks, large electronic equipment, electromagnetic fields and other strong sources of interference, so as to avoid the short distance between the remote control and the receiver, or it will not work properly.
4. Do not use this electronic product abnormally. Abnormal use will reduce the performance and life of the product, and in severe cases, damage the product and bring hidden dangers to your safety.
5. The delay time setting is set automatically when entering learning mode. The delay time setting is associated with the number of times the learning key is pressed. Please pay special attention.

1. Product: SG90 Servo
2. Torque: 2.0kg/cm(4.8V), 2.2kg/cm(6V)
3. Speed: 0.09s/60°(4.8V), 0.08s/60°(6V)
4. Rotation angle: 180°
5. Operating voltage: 4.8~6V.
6. Gear: plastic
7. Deadband: 7us
8. Weight: 10.5 g
9. Size: 22.8mm × 12.2mm × 28.5mm

1. Size: 38mm(length) x 22mm(width) x 14mm(height).
2. Weight: 8 g
3. Working voltage: 3.3-5.5V.
4. Clock chip: DS3231 high precision clock chip
5. Clock accuracy: within 0-40 degrees C, accuracy 2ppm, annual error of about 1 minute
6. With 2 calendar alarms
7. Programmable square wave output
8. The real time clock generates seconds, minutes, hours, week, date, month and year and provides leap year compensation valid for up to 2100 years
9. The temperature sensor inside the chip is accurate to +/- 3 degrees C
10. Memory chip: AT24C32 (32K memory capacity)
11. IIC bus interface, high transmission speed 400KHz (when working voltage is 5V)
12. Can cascade other IIC devices, 24C32 address can be changed by short circuit A0/A1/A2, default address is 0x57
13. With LIR2032 rechargeable battery to ensure the watch works normally even after the system is turned off
14. Packaging: Anti-static single packaging
15. Wiring instructions (taking Arduino uno r3 as an example):
SCL - A5
SDA - A4
VCC - 5V
GND - GND
16. DS3231 is a high-precision, low-cost I2C real-time clock (RTC) with integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device contains a battery input, which can maintain accurate timing when the main power is disconnected. The integrated crystal oscillator improves the long-term accuracy of the device and reduces the number of components in the production line. The DS3231 offers commercial and industrial temperature ranges and is available in a 16-pin 300mil SO package.
17. RTC saves information of seconds, minutes, hours, day, date, month and year. Months less than 31 days will automatically adjust the end of the month, including corrections for leap years. The clock working format can be 24-hour or 12-hour with / AM / PM indication. It provides two configurable calendar alarms and a configurable square wave output. The address and data are transferred serially via the bidirectional I2C bus.
Sophisticated temperature-compensated voltage reference and comparator circuits are used to monitor VCC status, detect power failures, provide reset outputs, and automatically switch to backup power when needed. Additionally, the monitor/RST pin can be used as a manual input to generate a μP reset.
18. In addition to high timing accuracy, the DS3231 also has other functions that expand the additional functions and selection range of the system host. The device integrates a highly accurate digital temperature sensor, which can be accessed via the I2C * interface (just like the clock). The accuracy of this temperature sensor is +/- 3 degrees C. The on-chip control circuit can realize automatic power detection and manage power switching between the main power supply and the backup power supply (i.e., low battery voltage). If the main power supply is turned off, the device can continue to provide accurate timing and temperature without affecting performance. When the main power is turned on again or the voltage value returns to the allowable range, the on-chip reset function can be used to restart the system microprocessor.

Characteristics
1. Mini computer chassis, sturdy and dustproof, beautiful appearance
2. Tailored for Compute Module 4 IO board: Make it easy to build your own Raspberry Pi CM4 mini PC
3. 40PIN GPIO Header Break-out: The standard 40 PIN GPIO header is still available, makes it easier to connect different kinds of HATs
4. Precise cutting with clear label: Each cut is completely aligned with the connector
5. Come with a cooling fan, combined with an airflow vent, better heat dissipation
6. Application: Binocular vision, PoE powered Raspberry Pi projects or other industrial context
List of packages
1. Metal case (upper and lower) x 1
2. 40 PIN GPIO adapter x 1
3. Fan-4010-PWM-12V x 1
4. Screwdriver x 1
5. Screw pack x 1

1. Material: plastic, metal
2. Size: 3*3*2cm
3. Weight: 15G

Main features:
1. Working current: DC 3.3V / 13 - 26mA
2. Quiescent current: DC 3.3V / 10 - 13mA
3. Sleep current: <80uA
4. Peak current: <30mA
5. Working frequency: 13.56MHz
6. Support card: Mifare1 S50, mifare1 S70, mifare Ultralight, mifare Pro, mifare Desfare
7. Application: Various electronic products and DIY projects

1. 100% brand new and high quality
2. 6 pin pitch connector, 1x5 keys type 5.
3. The white sticker can be peeled off for adhesive mounting.
4. Widely used in industrial and household electronic equipment, instruments, etc.

SAFETY PRECAUTIONS B>
1. Li-ion and Li-Po batteries are quite unstable. They can cause fire, personal injury or property damage if not properly charged or used.
2. Do not connect the polarities reversely when charging or discharging the battery. Do not use the bottom charger/charging panel to charge the battery.
3. Do not mix Use old batteries with new ones, avoid using batteries of different brands.
4. When you buy lithium battery, you need to make sure the battery specification is compatible with the expansion board. Choose the batteries from the formal manufacturer and make sure the batteries work stably and safely by the aging test.
5. Lithium batteries have a limited cycle life, they also deteriorate as time passes. It should be replaced with new ones when the batteries reach their max cycle life, or work beyond two years, whichever comes first.
6. It should be placed carefully and correctly, keep it away from flammable and explosive items, away from children, avoiding any safety accident caused by careless storage.
Features B>
The Solar Power Manager (C) is compatible with general 6V~24V solar panels. It can charge 18650 rechargeable lithium batteries through solar panel or USB Type-C connection and provides 5V/3A regulated output (with multi-protocol support, including PD/QC/FCP/PE/SFCP).
The module is equipped with MPPP (MAX Power Point Tracking) and multi-protection circuits, so it can continue to work with high efficiency, stability and safety. It is suitable for solar energy iot, low power and other environmental protection projects.

1. Support MPPP (MAX Power Point Tracking) function, max the efficiency of solar panel
2. Flexible battery charging: by solar panel or USB Type-C adapter
3. Compatible with 6v~24V solar panels, DC-002 jack input or screw terminal input
4. Onboard MPPT set switch, select the closed level to the input level to improve the charging efficiency
5. On-board aluminum electrolytic capacitor and SMD ceramic capacitor, reducing ripple, stable performance
6. Built-in battery holder, support 3x 18650 rechargeable lithium batteries
7. Multiple LED indicators, for monitoring the status of the solar panel and battery
8. Multi-protection circuits: over-load / over-discharge / reverse-proof / over-heat / over-current, stable and safe to use
Specifications B>
1. Solar in: 6V~24V (18V by default)
2. Charging: Solar panel, power adapter, USB
3. Battery: 3 x 18650 lithium ion battery (not included)
4. USB input: 5V (Type-C, support PD fast charging)
5. 5V output: 5V/3A (USB-out, Type-C)
6. Recharge cutoff voltage: 4.2V +/- 1 ???
7. OVER-DISCHARGE PROTECTION TIME: 3.0V +/- 1 ???
8. SOLAR PANEL CHARGING EFFECT: ~78%
9. USB charging efficiency: ~93%
10. Batteries increase efficiency: ~92%
11. Case: Metal case
12. Dimensions: 119.0 x 71.0 x 25.2mm
13. Package List:
- Solar Power Manager (c) x1
- Adapter X1.

Size:

package weight

Weight of each package 0.24kgs / 0.54lb One size fits all product

20cm * 15cm * 5cm / 7.87inch * 5.91inch * 1.97inch

Characteristics
1. Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
2. Built-in HR8825 dual motor controller IC with built-in microstepping indexer, drives two stepper motors, easy to use
3. 6 microstep modes available, configured with DIP switches: full step, half step, 1/4 step, 1/8 step, 1/16 step and 1/32 step
4. Motor drive current adjustable by potentiometer, maximum current output 2.5A
5. Protection functions: Overcurrent protection (OCP), Thermal shutdown (TSD), VM undervoltage lockout (UVLO)
6. Integrate 5V regulator, enable to supply power to Raspberry Pi
7. Built-in multi-connector options for stepper motors with different specifications
8. Comes with development resources and manual (examples in BCM2835, Pi wiring and python)
Specifications
1. Motor controller: HR8825
2. Motor drive voltage: 8.2V~28V
3. Motor drive current: 2.5A
4. Logic voltage: 3.3V
5. Mounting hole size: 3.0mm
6. Dimensions: 65 x 56 mm
List of packages
1. STEPPER MOTOR HAT (B) x 1
2. RPi Screw Pack (2pcs) x 1
3. Aluminum heatsink x 1