Developer tray for Fotoboard Pre-Sensitized PCB 14x22cm

Resistors 470R Ohm 5% 0,25W 1/4W features:
- 470R Ohm
-Type: Carbon film
-Tolerance: ±5%
-Power: 0.25W
-Dimensions: 2x7mm

Hot Air Digital Soldering Station ZD-8907 SMD features:
- For welding and desoldering SMD components
- Power: 220V-240V
- Temperature regulation 200°C - 500°C
- Power consumption 320 W (max.)
- Air Flow 22 l/min. (Max.)
- Nozzle diameter 21.5 mm
- Dimensions 58 × 290 mm
- Certifications CE, RoHS, LVD
- Guarantee 12 months

25x M3x8 Nylon Screw features:
-Polyamide 8mm Thread Arduino Robot PCB Screw
-M3 Screw
-Thread: 8mm
-Round head
-Star (Philips) DIN7985
-Quantity: 25 units
-Color: white

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 />

This product is a 20x20mm extra strong adhesive base for nylon flanges 2.5mm up to 9mm wide. Its great fixing power prevents you from drilling.

The product provides a good development quality, protecting the sharpness of the color. The formulation is free of NaOH, which significantly increases safety at work.
Universal developer for photo varnish and positive printed circuit boards PCB.

Chemical substance for recording printed circuits and copper. Unlike ferric chloride, sodium persulfate is colorless, odorless, does not stain clothes and does not turn blue when it runs out. Easy to dissolve. It acts very regular with guarantee of contour sharpness. 

Industrial Abrasive Scourer Pad 150x50mm Laminated Copper Plate PCB features:
Industrial abrasive scourer for laminated copper plate Cleaner for cleaning the laminated copper plate. Perfectly removes impurities such as oxides, sulfides and other similar establishments, as well as polished surfaces so that the copper substrate is better prepared.
It is also ideal for removing the remains of enamels, lacquers and other materials used during the creation of PCB tracks.