Recent content by PaulM2

Does this pwm dc controller slow the motor down without any loss of power?

Yes gpop1 , I find the info on ebay very basic, and not clear. Here are some options in each division.. 12 volt Motors Cost Torque Amps Link 0,6 rpm worm gear motor US$ 11 25 kg.cm 0.1...

I have been thinking about motor sizes, and thought I should try some calculations, despite my physics being very rusty. I think with a good bearing at the pivot, the effort to move the mass will be very small. So all one has to account for is the loading of the one side of the tray and not...

Thanks again, very interesting, I will do a bit more finding out. Id like something with 100 000 hours as that will last a long time. I built my own windturbine so know the advantage of overdesign. What hassles have you had with ptc. I was looking at the table pivots, and will either...

Hi gpop1 Here is a good conversion http://www.convert-me.com/en/convert/torque/?u=kgfcm&v=25 I looked at the torque of the 0,6rpm motor and realised I had missed a zero out somewhere. The force of 25kg/cm, means that at one centimeter a force of 25kg is needed to stop the motor. In...

Have you seen this thread https://www.backyardchickens.com/t/976303/building-a-incubator-from-a-wine-cooler it uses an Arduino (although all the controllers can be bought off shelf too, and links are provided to alternatives) but all the components run off 12V, so I imagine it could be adapted...

Hi gpop1 As I haven't bought the 0,6rpm motor yet, I will certainly take your advice. I presume the furtherest from the centre the motor is the less strain it will take and hence last longer. One of the challenges in building this unit is that it will be a long way away, so I am really going...

I'd be interested to know what all you are running via the Arduino, and specifications of your setup. How are you changing the humidity from what you monitor? I think temperature is easier to keep constant than humidity so I am interested in what you have done.

Hi gpop1, thanks for all you help. We are looking at 150-180 eggs. and it may be sensible to make it double this! I am basing my incubator on your design in your "building an incubator from a wine cooler" (as its 12v and I think the Arduino may be the best & cheapest controller)...

Thanks. Then Ill probably make it larger, as I haven't built the incubator body yet, which I plan to be well insulated to reduce the power requirements. I am also thinking to mount the motor above the trays, in which case the push rod will do less work as it is in tension rather than...

Thank you gpop1, Yes you are right! Of course I have only shown half the tilt and hence the drawing is out.. Holes should be at 1,5" (39mm). I have attached a corrected drawing. Is a 2" disk sufficient or would it be better to make this part bigger. Is for example a 4" travel better...

This is great thanks, and I intend to copy it, and have found a 12v motor with a 0,6 revolution on ebay! I gather that most egg turners, of the egg in a plastic holder type, turn the egg 40 degrees to either side making a total of 80 degrees. I have attached a sketch I have drawn to calculate...