hola colegas os quiero enseñar un par de cositas que acabo de encontrarme en internet, para el proyecto del velero:
Description
Features:
•Driver: L298N Dual H Bridge DC Motor Driver IC
•The terminal supply area of driven part Vs: +5 V ~ +35 V; such as the need to take power within the board, the supply area Vs: 7V ~ 35V
•The peak current of driven part Io: 2A
•the terminal supply of area the logical part Vss: +5 V ~ +7 V (can take power within the board +5 V)
•the operating current range of the logical part : 0 ~ 36mA
•control signal input voltage range:
•Low:-0.3V ≤ Vin ≤ 1.5V
•High: 2.3V ≤ Vin ≤ Vss
•enable signal input voltage range:
•Low: -0.3 ≤ Vin ≤ 1.5V (control signal is invalid)
•High: 2.3V ≤ Vin ≤ Vss (control signal active)
•Maximum power consumption: 20W (when the temperature T = 75 °C)
•Storage temperature: -25 °C ~ +130 °C
•Driver Board Size: 55mm * 49mm * 33mm (with fixed copper pillar and the heat sink height)
•Driver Board Weight: 33g
•Other Extensions: control of direction indicators, the logic part of the plate to take power interface.
Package Included:
•1 x L298N Dual H Bridge DC Motor Driver



por 5,59 euros
En RS-Online, solo el L298N ya me cuesta 5,92 euros, a eso añadir el resto de material y mano de obra ]y
este motor con reductora
Specifications:
•Torque: 2.0kg cm
•Voltage: 12V DC
•RPM: 30RPM
•Diameter (top section): 40mm
•Diameter (body): 32mm
•Shaft length: 18.5mm
•Height (excl. shaft): 33mm
•Shaft diameter: 5mm
•Weight: 84g
•Brand new and unused
Package included:
•
1x 40mm 12V 30 RPM DC Electric Motor
por 7,58 euros


como veis todo esta hecho y a precios de locura, si te pones a hacer las placas, te salen mas caras. Solo es cuestion de bucear en internet que seguro que ya lo produce alguien de manera industrial
un saludo
juan luis igual