HeatShield: The next one (R1->R2)

[gergelytakacs]

Please include all hardware design ideas and "bugs" that can be improved upon in the next revision. Provide ideas for upcoming work.

[gergelytakacs]

Has no reference pot. A small reference pot, probably "standing" version could be included. Shaft can possibly exit the safety enclosure, see #19

[gergelytakacs]

Limit the temperature (hardware) not (only) the power into the actuator.

[gergelytakacs]

Include another thermocouple for monitoring ambient temperture, would make the model (and its identification) possibly more engaging.

[gergelytakacs]

Adding a fan or mounting a Peltier device for thermoelectric cooling could either add another input to the system or act as a repeatable way to inject disturbance into the closed-loop control process.

[gergelytakacs]

Adding an alternate input function that takes heat power in W instead of percents. Can be done according to the PWM signal RMS, that is P=(V_avg)^2/R * (Ton/Tperiod)

[gergelytakacs]

• Possibly more power could be given to the system, this one is a bit too slow for my taste. To balance safety / speed of operation is an issue.
• The voltage regulator overheats really badly. It is actually hotter than the hot end!:))) So.... One argument can be that the hotend can reach its level if it's there anyway or it needs better cooling.
• Could a fan be integrated to speed up cooling? Or a peltier cooler. But then that would not be a 3D printer head anymore.