The ESP8266 is a low-cost Wi-Fi microchip with full TCP/IP stack and microcontroller. The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. The ESP8266 can be controlled from your local Wi-Fi network or from the internet (after port forwarding). The ESP-01 module has GPIO pins that can be programmed to turn ON/OFF LED or a relay ON/OFF through the internet. The module can be programmed using an Arduino/USB-to-TTL converter through the serial pins (RX, TX).
• 802.11 b/g/n protocol
• Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, and power management units
• +19.5dBm output power in 802.11b mode
• Power down leakage current of < 10uA
• Integrated low power 32-bit CPU could be used as application processor
• SDIO 2.0, SPI, UART
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation & s guard interval0.4
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)
The material used in PCB from top to bottom includes Silkscreen, Soldermask, Copper and Substrate. The last of those layers, substrate, is made of fiberglass and is also known as FR4, with the FR letters standing for "fire retardant." and is 80 x 55mm in lenght.
The L293 and L293D devices are quadruple high-current half-H drivers. The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. Both devices are designed to drive inductive loads such as relays, solenoids, DC and bipolar stepping motors, as well other high-current/high-voltage loads in positive-supply applications.
Each output is a complete totem-pole drive circuit, with a Darlington transistor sink and a pseudo- Darlington source. Drivers are enabled in pairs, with drivers 1 and 2 enabled by 1,2EN and drivers 3 and 4 enabled by 3,4EN. The L293 and L293D are characterized for operation from 0°C to 70°C.
• Wide Supply-Voltage Range: 4.5 V to 36 V
• Separate Input-Logic Supply
• Internal ESD Protection
• High-Noise-Immunity Inputs
• Output Current 1 A Per Channel (600 mA for L293D)
• Peak Output Current 2 A Per Channel (1.2 A for L293D)
• Output Clamp Diodes for Inductive Transient Suppression (L293D)
The ULN2003 stepper motor driver PCB provides a direct drive interface between your microcontroller and stepper motor. The PCB provides 4 inputs for connection to your microcontroller, power supply connection for the stepper motor voltage, and ON/OFF jumper, a direct connect stepper motor header and 4 LEDs to indicate stepping state.
Stepper Motor Connection:
Connect stepper motor to this header. If you use one of our stepper motors they will just plug directly into the header. If you have another brand without the correct header plug, you could solder the wires directly to the back of the PCB.
Step State LEDs:
Indicate which channel is active.
The L298 Driver is a high voltage, high current dual full bridge driver designed to accept standard TTL logic levels and drive inductive loads such relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together the corresponding external terminal can be used for the connection of an external sensing resistor.
- Operating supply voltage up to 46 V
- Total DC current up to 4 A
- Low saturation voltage
- Over temperature protection
- Logical "0" input voltage upto1.5 V (HIGH NOISE IMMUNITY)
- Two motor direction indicator LEDs
- An onboard user-accessible 5V low-dropout regulator
- Schottky EMF-protection diodes
- Screw-terminals for power and motor connections
- High quality PCB FR4 Grade with FPT Certified
A breadboard is a solderless device for temporary prototype with electronics and test circuit designs. Breadboards are used for rapid prototyping of electronic projects, without needing to solder the components to make it work. Most electronic components in electronic circuits can be interconnected by inserting their leads or terminals into the holes and then making connections through wires where appropriate. The breadboard has strips of metal underneath the board and connects the holes on the top of the board.
This is a Full size breadboard or standard size breadboard with 800 tie points, the breadboard measures 55mm x 170mm, you can combine two or more of this breadboard to make larger or wider breadboards, it also includes an adhesive foam at the back, to mount it securely on most surfaces.
Solderless breadboards are commonly used for prototyping because they allow you to quickly build temporary circuits without soldering. Breadboards accept most through-hole parts and up to 22 wire. When you’re done or want to change your circuit, it’s easy to take your circuit apart. Pre-cut and premium jumper wires are especially convenient for Solderless Breadboard.Two sides of the breadboard have tabs and the other two sides have compatible slots, which lets you connect multiple 400-point breadboards for more prototyping space.
- It has total 400 holes
- Perfect for electronics protype experiments
- After experimenting with breadboards you can make your circuit more permanent with same connection
- Made up of ABS plastic + Phosphor bronze nickel plated spring clips.