?Key Features :

• • • Works with any USB Bluetooth adapters.
    • Default Baud Rate: 9600,8,1,n.
    • Built in antenna.
    • Coverage up to 30ft.
    • Bluetooth version: V2.0+EDR
    • Operating voltage: 3.3V
    • Default Baud Rate: 9600,8,1,n.
    • Signal coverage: 30ft
    • Item size: 4.3 * 1.6 * 0.7cm
    • Item weight: 3g
    • Package size: 9 * 3 * 1cm
    • Package weight: 8g
    • Commercial Series: Bluetooth module board Series
    • With LED indicator light, use 150mA and 3.3V regulation chip.
    • With VCC.GND.TXD.RXD foot for the Bluetooth
    • With ?Re-seach? button(ON/OFF/WAKE foot for it , external MCU outinput ?High level? can control module to re-seach)
    • Compatible with bluetooth master module?.slave module?or master-slave(whole) module.
    • Input voltage: 3.3~6V
    • Size: 1.55cm*3.98cm

?Key Features :

• • • Model:?DRV8825
    • Supply Voltage:?8.2 ? 42 VDC.
    • Current Capacity :?2.2A max(24V).
    • Continuous current per phase:?1.5 A.
    • Minimum Logic voltage:?2.5V.
    • Maximum Logic Voltage:?5V.
    • Microstep resolutions:?full, 1/2, 1/4, 1/8, 1/16, and 1/32.
    • Dimensions?: 15 x 20 mm.
    • Weight:?4 gm.
    • Microstep resolutions:?full, 1/2, 1/4, 1/8, 1/16, and 1/32.
    • Simple step and direction control interface
    • Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step
    • Adjustable current control lets you set the maximum current output with a potentiometer. Hence lets you use voltages above your stepper motor?s rated voltage to achieve higher step rates
    • Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
    • 45?V maximum supply voltage
    • Built-in regulator (no external logic voltage supply needed)
    • Can interface directly with 3.3?V and 5?V systems
    • Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout
    • Short-to-ground and shorted-load protection
    • 4-layer, 2?oz copper PCB for improved heat dissipation
    • Exposed solderable ground pad below the driver IC on the bottom of the PCB

?Key Features :

1. Module properties: unfenced step-up (BOOST)
2. The input voltage: 3-32 v
3. Continuous adjustable output voltage: 5v-35 v
4. Input current: 4 a (Max), no-load 18 ma
5. Module size: 44.7 (mm) x21.7 (mm)
6. Input mode: IN + input level is, the IN ? negative input
7. Output mode: OUT + output level is, the OUT ? output is negative
8. Conversion efficiency: < 94% (the lower the pressure difference, the greater the efficiency)
9. Output ripple: 50 mv (the bigger the higher the voltage, current and ripple)

?Key Features :

1. • Product Name: Flame Sensor Module
   • Output Channel: 1
   • Power Supply: 3.3/5V
   • PCB Board Size: 32 x 14mm(L*W)
   • Hole Size: 3mm
   • Material: Electric Part
   • Net Weight 3g
   • indicator light: a green one for the switch, a red one for power.
   • Built in a potentiometer for sensitivity control.
   • Onboard signal output indication, output effective signal is high, at the same time the indicator light up, the output signal can directly connect to microcontroller IO.
   • Can detect fire or wavelength in 760 ~ 1100 nm nano within the scope of the light source.
   • Detection angle about 60 degrees, the flame spectrum especially sensitive.
   • The flame of the most sensitive sensors flame, the regular light is also a response, generally used for fire alarm purposes.