A6 GSM GPRS Four Band GPRS Module with MCU Antenna

It allows controlling many different types of engines: - Up to 4 bidirectional current motors
- Up to 2 stepper motors (unipolar or bipolar) In addition it is provided with two connectors for servos.                   L293D Motor Drive Shield Expansion Board features:
- Minimum operating voltage: 4.5 V
- Maximum operating voltage: 36 V
- Maximum current: ± 1.2 A (650mA)
- Logic voltage: 5V
- Controller L293D
- Measures: 70x55x20 mm L293D controller consists of 4 H bridges with 650 mA current with thermal protection.
Pull-down resistors keep the motors off during startup.

SIM800L GPRS GSM SIM Board Quadband features:
Package includes:
- SIM800L module,
- 2x pin headers,
- Spring antenna,
- 3G PCB antenna - 15cm cable.
- Supported SIM format: Micro SIM.

1.8 TFT LCD screen with SPI interface and 5 control signals. Its touch screen is resistive, it has a resolution of 128x160 pixels.
Easily programmable with UNO module, Arduino, Raspberry, Mega2560.
LCD TFT Display Module 128x160 1.8 SPI features:
- TFT LCD screen 1.8 128x160 pixels
- Pixel: RGB vertical stripe
- Driver ILI9163,
- SPI interface: CS / MOSI / MISO / SCK (pins not soldered)
- 5-pin interface CS, RS, SCL, SDA, RST for control
- Resistive touch screen
- Ideal for projects with ARDUINO, Uno R3, MEGA2560

140x Jumper Wire Kit features:
-Quantity: 140 pieces of different lengths and colors in small box compartments
-Box measures: 170x55x15mm

It is ultra compact and very low consumption. It works at 2.4GHz frequencies (free frequency) and is ideal for telemetry projects, robots, peripheral control, video game control applications, remote temperature sensors, pressure, alarms, etc ... NRF24L01 + Wireless Transceiver Module 2.4GHz features:
- Based on chip NRF24L01 + Ultra Low Power
- Free band: 2.4GHz ISM
- Speed: 250kbps, 1Mbps, 2Mbps
- Working current - reception: 13 mA
- Transmission: 11 mA (900nA -deep sleep mode)
- Receiving sensitivity: -94dB 250kbps
- Coverage in closed spaces: 15m / 30m
- SPI interface
- Input voltage: 1.9V- 3.6V
- Input / output port voltage: 0V-3.3V / 5V
- Coverage in open areas: 100m approx.
- Clock frequency: 16MHz

ESP32 processor development board with WiFi and Bluetooth (BLE) compatible with Arduino Uno shields. It is much faster than the ESP8266 processor (NodeMCU and the like) . Wemos D1 ESP32 R32 WROOM-32 WiFi and Bluetooth features:
Power: 5-12VDC WiFi 802.11 b / g / n / e / i (802.11n up to 150 Mbps) Bluetooth v4.2 BR / EDR and BLE. Compatible with Arduino Uno shields. 6 Analog input. 20 digital inputs / outputs (3.3V) (with PWM functions, interrupt). UART, SPI, I2C communication. Size: 68Ã — 53 mm Micro USB connection. 4Mbytes Flash Memory 520Kb Clock: 240Mhz (a core dedicated to WiFi processing) Temperature: -40C + 85C Current: 250mA (max) Current in saving mode: 0.15mA Operating current: 20mA (without WiFi) Useful links for Arduino / Raspberry programming and projects with Arduino /

A high-performance regulator-booster.
24V battery charger - DC / CV method.
Power supply of the laptop from a 12V car battery.
A high-performance dimmer-regulator.
Charger for Li-Ion, Li-Po batteries etc. - CC / CV method.
LED Constant current driver for LED diodes.
Characteristic:
- Input voltage: 6V -40V
- Output voltage: 1.25-35V (adjustable)
- Output current: 8A, (10A maximum)
- Output power: 300W maximum
- Efficiency of Conversion: up to 95%
- Wiring: Solderless terminal
- Operating frequency: 300kHz
- Ambient temperature exceeds 40 ° C, increase heat dissipation
- LED indicator two-color;
- Charge red
- Fully charged light green
- No charge green

Metal disc diameter 25mm with 4 mounting holes for 25T RC MG996R servos
25T metal disc for MG996R servomotors + 4 screws features:

- Material: Aluminum
- Gear teeth: 25T
- 4x M3 mounting holes rotated
- Diameter disc: 25mm
- Includes: 4 fixing screws.