2x Cable Alligator Clip Black and Red Multimeter

Protoboard Breadboard 9x15cm features:
-PCB dimension: 9x15cm
-Hole diameter: 1mm
-Pitch: 2.54mm
-Bakelite with copper fields

Characteristic: - Heatsink 12x10x25mm (hot side)
- Heatsink 60x40x25mm (black or silver color)
- 70x65mm thermal insulation for cell - Fan with grid 12V 90x90x25mm
- Thermal paste 0.5g
- Screws
- Kit does not include: Peltier cell Ceramic TEC1-12706 12V

The DHT11 humidity sensor is presented in a plastic body ideal for mounting on a panel or similar. It uses a capacitive sensor that returns a digital signal with the measurement.
Characteristic:
- Operating voltage: 3 to 5 VDC - Humidity measurement range: 20-95% ± 5% accuracy
- Temperature measurement range: 0ºC to 50ºC ± 2º accuracy
- Maximum sampling rate: 2 seconds - Working current 2.5mA
- 1-wire interface
- Dimensions: 32 x14 mm
- Quantity: 1 unit with 3x female / female cables

Descent module.
Use a multimeter to check the output voltage and adjust the potentiometer.
Control of voltage and current.
DC Step-Down Converter 5A 4-38v to 1.25-36v XL4015 LED LiPo features:
- Input voltage: 4-38V
- Output voltage: 1.25-36V
- Current output: adjustable, 4.5A (max 5A)
- Output power: 75W maximum
- Operating temperature: -40 to + 85 ºC
- Operating frequency: 180KHz
- Efficiency conversion: up to 96%
- Short circuit protection: Yes (limited current 8A)
- Protection over temperature: the output switches off automatically
- Size: 62mm x 26mm x 14mm
Principal functions:
- Step-down converter with overcurrent protection
- Li-Po battery charger, Li-Ion

40x Male to male cables 10cm features:
- Length: 10cm
- Quantity: 40 cables
- Dupont male connectors on both ends
- Compatible with 2.54mm female connectors
- High quality and good working condition
- Easy to install and use

TP4056 Module Lithium Battery Charger with Protection features:
- TP4056 Li-Ion Micro USB Charger
- Upgraded version of previous TP4056
- Micro USB connection to charge directly from the PC
- Ideal for 18650 batteries
- Based on the TC4056A regulator
- Input Voltage: 4.5V - 5.5V DC
- Full charge voltage: 4.2V +/- 1.5%
- Max Output Current: 1A
- Overvoltage protection 4.2V
- Over discharge protection 2.4V
- LED indicator: charging blue, charging red
- Operating temperature: -10ºC to + 85ºC
- IN + and IN- connection for electronic circuits
- Overcurrent protection: 3A
- Measurements 26 x 19 x 5 mm
- Possibility of current change through Rprog

It is very easy to make it work with an Arduino, PIC or any other microcontroller.
In its output pin we will be able to measure the PWM pulse width depending on the distance of the obstacle.
HC-SR04 Ultrasonic Sensor Distance Measuring Module features:
- Supply voltage: 5V (4.5V- 6V)
- Consumption: 30 mA typical, (35 mA max)
- Interface: VCC , GND, Signal
- Range: 2 cm to 3 meters
- Angle 15º
- LED indicator of measurement in progress
- Frequency: 40 kHz for 200 µs - Size: 30mm x 20mm
- Quantity: 1 unit
Useful links for Arduino / Raspberry programming and projects with boards Arduino / Raspberry:
Automatic robot operation with obstacle detection />

8mm Bore Pillow Block Mounted Bearing is often suited to support rotating shaft applications.