Tell us about yourself!
The sugar is brown before they developed it and turn it in to white! That why it is brown sugar and molasses sugar is molasses!
But a computer power supply is cheaper and you only to use 2 wires to turn off and on and they are already there!
Milk weed sap was a shampoo about 300 years ago!
About 50 years ago I went out with a girl that the family had a pool that had heater defunked. I look at the pool and there was a shed that had a metal roof that faces the sun. A sheet of black plastic 12' x 30', a wore out hose, and plastic glue. I folded the black plastic in half, cut hose to the top and bottom, drilled the hose for the top, cut the hose in 1/2 for the bottom, used the glue to patch any holes, and attached top the pump and the bottom go into the swimming pool. In two day the water was TOO hot in the pool!
The motor and all the electrical need to be outside of where it collects dust. All fine as the dust can be, it who not be a fire, it would be explosive!
I just bought a little refrigerator at WalMart for 29.95. A six pack of pop go in to it. I used a Peltier module and a heat sink to cool down a Motorola 68060 but it took more energy than liquid cooling back in 1999.
I made a device from Motorola air systems back in the 1988 that looks at fresh water and salt water and then turned the salt on if it to little salt. I had to to use 6' towers of salt water and fresh water. They had both tubes with air running at 1 foot a minute. The the differential went to a controller that tuned on the salt water. I used a device for test the weight on the alcohol.
Tools and Supplies
Raspberry Pi Class
I used to use a 8031 to run a packaging machine and had 30 on off relays, a 360 degree encoder, and 3 heat encoders back in 1982. 8051 should be able today run a 7 axis machine not 2!
Laser Cutting Class
Try they white tubing fresh water, the elbows are 90 rather 87 which gray is waist water!
3D Printing Class
I used to make them with Christmas tree lights and they would blink. I could get 8 different colors for my ads, in 1971.
It does not really apply! The parts are different and the device is made by hand!You can make any patent if you can figure it out. You can not sale them!
No I have a Masters and two time I went back to school and had learned about transistors and ICs. Now what!
No the Pi 3 is fine.
Why I understand metric, inches, feet, miles, and light year! So it do not mater to me!
I made a hand mixer into am radio amplifier back 55 years ago. I had got a new 6 transistor radio and I could only receive 2 stations! So I build an amplifier with 4 3 feet radial wire and hooked to the coil in the mixer. Took it outside to the peak . I had my bedroom in the attic. When my radio came with in 2 foot of the amplifier then I could receive 50 different station. Old cell phone antennas outside of the CAR with out any connections except capacitance between the cell phone and the antenna. Go to so you people that have NO IDEA ABOUT RADIOS!