Boards

  Length of Cable : 100CM

Size of Stainless steel sheath:6*50mm

Power supply range: 3.0V to 5.5V

Operating temperature range:-55°C to +125°C (-67°F to +257°F)

Storage temperature range:-55°C to +125°C (-67°F to +257°F)

Accuracy over the range of -10°C to +85°C: ±0.5°C.

Output leads: Yellow (VCC), Red (DATA), Black (GND)

waterproof 

Features:
Brand New and High Quality!
These heatsinks have a layer of thermal adhesive that  allow for easy installation on to your board..
Just peel and stick.
Reduce the risk of hardware failure due to  overheating.
Installation Instructions:
Make sure the chip modules are free from dirt and  grease
Peel the protective liner off on the base of the  heatsink
Apply the heatsinks to the corresponding chip modules  and apply firm pressure.

The STM32F405xx and STM32F407xx family is based on the high-performance ARM®Cortex®-M4 32-bit RISC core operating at a frequency of up to 168 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all ARM single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32F405xx and STM32F407xx family incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to 192 Kbytes of SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, three AHB buses and a 32-bit multi-AHB bus matrix.

All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers. a true random number generator (RNG). They also feature standard and advanced communication interfaces.

Key Features

• Core: ARM®32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from Flash memory, frequency up to 168 MHz, memory protection unit, 210 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
• Memories
  • Up to 1 Mbyte of Flash memory
  • Up to 192+4 Kbytes of SRAM including 64-Kbyte of CCM (core coupled memory) data RAM
  • Flexible static memory controller supporting Compact Flash, SRAM, PSRAM, NOR and NAND memories
• LCD parallel interface, 8080/6800 modes
• Clock, reset and supply management
  • 1.8 V to 3.6 V application supply and I/Os
  • POR, PDR, PVD and BOR
  • 4-to-26 MHz crystal oscillator
  • Internal 16 MHz factory-trimmed RC (1% accuracy)
  • 32 kHz oscillator for RTC with calibration
  • Internal 32 kHz RC with calibration
  • Sleep, Stop and Standby modes
  • VBATsupply for RTC, 20×32 bit backup registers + optional 4 KB backup SRAM
• 3×12-bit, 2.4 MSPS A/D converters: up to 24 channels and 7.2 MSPS in triple interleaved mode
• 2×12-bit D/A converters
• General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
• Up to 17 timers: up to twelve 16-bit and two 32-bit timers up to 168 MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
• Debug mode
  • Serial wire debug (SWD) & JTAG interfaces
  • Cortex-M4 Embedded Trace Macrocell™
• Up to 140 I/O ports with interrupt capability
  • Up to 136 fast I/Os up to 84 MHz
  • Up to 138 5 V-tolerant I/Os
• Up to 15 communication interfaces
  • Up to 3 × I2C interfaces (SMBus/PMBus)
  • Up to 4 USARTs/2 UARTs (10.5 Mbit/s, ISO 7816 interface, LIN, IrDA, modem control)
  • Up to 3 SPIs (42 Mbits/s), 2 with muxed full-duplex I2S to achieve audio class accuracy via internal audio PLL or external clock
  • 2 × CAN interfaces (2.0B Active)
  • SDIO interface
• Advanced connectivity
  • USB 2.0 full-speed device/host/OTG controller with on-chip PHY
  • USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI
  • 10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII
• 8- to 14-bit parallel camera interface up to 54 Mbytes/s
• True random number generator
• CRC calculation unit
• 96-bit unique ID
• RTC: subsecond accuracy, hardware calendar

https://www.st.com/en/microcontrollers/stm32f407ve.html

H340G Replace FT232RL
Operating Voltage（logic level）：5V
8 analog inputs ports:A0 ~ A7
14 Digital input / output ports:TX,RX,D2 ~ D13
6 PWM ports:D3, D5, D6, D9, D10, D11
1 pairs of TTL level serial transceiver ports RX / TX
Using Atmel Atmega328P-AU MCU
There is bootloader installed in it
Support USB download and Power

Microcontroller Atmel ATmega168 or ATmega328 Operating Voltage (logic level) 5 V Input Voltage (recommended) 7-12 V Input Voltage (limits) 6-20 V Digital I/O Pins 14 (of which 6 provide PWM output) Analog Input Pins 8 DC Current per I/O Pin 40 mA Flash Memory 16 KB (ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloader SRAM 1 KB (ATmega168) or 2 KB (ATmega328) EEPROM 512 bytes (ATmega168) or 1 KB (ATmega328) Clock Speed 16 MHz Dimensions 0.73" x 1.70"
Support for external 5V ~ 12V DC power supply
Support power supply by 9V battery

L9110S DC Stepper Motor Driver Board H Bridge FZ0537

Description:

Low quiescent current

Wide supply voltage range: 2.5V-12V

800mA per channel continuous power output capability

Lower saturation voltage

TTL / CMOS compatible output level can be directly connected to CPU

Output built-in clamp diodes for inductive load

Control and drive integrated into a single IC

With pin high-voltage protection

Operating temperature :0-80

Onboard 2 L9110S motor control chip

Module can drive two DC motors or a 4-wire two-phase stepper motor

Package Included:

5 X L9110S Motor Driver

L293D is a monolithic integrated, high voltage, high current, 4-channel driver. Basically this means using this chip you can use DC motors and power supplies of up to 25 Volts, that"s some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what"s known as a type of H-Bridge. The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor. Features : 2 interface for 5V Servo connected to the Arduino"s high-resolution dedicated timer - no jitter. Can drive 4 DC motors or 2 stepper motors or 2 Servo. Up to 4 bi-directional DC motors with individual 8-bit speed selection. Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping. 4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 25V DC. Pull down resistors keep motors disabled during power-up. 2 external terminal power interface, for separate logic/motor supplies. Tested compatible for Arduino Mega, Diecimila and Duemilanove.L9110S DC Stepper Motor Driver Board H Bridge FZ0537

Description:

Low quiescent current

Wide supply voltage range: 2.5V-12V

800mA per channel continuous power output capability

Lower saturation voltage

TTL / CMOS compatible output level can be directly connected to CPU

Output built-in clamp diodes for inductive load

Control and drive integrated into a single IC

With pin high-voltage protection

Operating temperature :0-80

Onboard 2 L9110S motor control chip

Module can drive two DC motors or a 4-wire two-phase stepper motor

Package Included:

5 X L9110S Motor Driver

Description:

Raspberry Pi foreign highest precision clock module DS3231

   Modules can adapt itself 3.3V and 5V systems without level conversion, this is a super convenient!

   1PCS DS3231 clock module

Specifications

• The LM741 series are general purpose operational amplifiers
• Application :Perform any mathematical operations, Amplify voltages, Oscillators, Voltage Comparator and many more

170 tie point breadboard - White
• 17 x 5 x 2 points
• ABS plastic material
• Completely reusable
• Coordinates for easy component placement
• • Accepts a variety of wire sizes (20-29 AWG)
• Dimensions: 45mm x 34.5mm x 9.5mm

Features:
Brand New and High Quality!
These heatsinks have a layer of thermal adhesive that  allow for easy installation on to your board..
Just peel and stick.
Reduce the risk of hardware failure due to  overheating.
Installation Instructions:
Make sure the chip modules are free from dirt and  grease
Peel the protective liner off on the base of the  heatsink
Apply the heatsinks to the corresponding chip modules  and apply firm pressure.

The Oak P is a USB attached precision piezoresistive pressure sensor.The on-chip calibration and analog to digital converter ensures highest precision and excellent signal quality.In altimeter applications the devise's resolution is in the range of 0.5 meters.