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Search: Posts Made By: NiHaoMike
Forum: Solar Power 11-18-21, 09:03 PM
Replies: 4
Views: 199
Posted By NiHaoMike
Some MPP inverters can supply backup power during...

Some MPP inverters can supply backup power during the day using only PV connected to the PV DC input. No batteries needed!
https://www.youtube.com/watch?v=n9KCl8SAh5Y
The only other major brand I'm...
Forum: Conservation 11-10-21, 09:15 PM
Replies: 5
Views: 196
Posted By NiHaoMike
Consider getting a small diesel generator and...

Consider getting a small diesel generator and replacing the oil burner with the engine exhaust.
Forum: Solar Power 10-25-21, 10:10 PM
Replies: 1
Views: 208
Posted By NiHaoMike
It used to be that 100W panels were the best $/W...

It used to be that 100W panels were the best $/W in small quantities, now it's more like 300W being the best value.
Forum: Solar Power 10-24-21, 07:41 PM
Replies: 2
Views: 373
Posted By NiHaoMike
Add a SSR to switch the water heater, then use an...

Add a SSR to switch the water heater, then use an Arduino to control it based on the water temperature and battery voltage.
Forum: Forum News & Feedback 10-04-21, 01:16 AM
Replies: 3
Views: 762
Posted By NiHaoMike
Perhaps just rename the "Solar Power" section to...

Perhaps just rename the "Solar Power" section to something like "Solar Power and Energy Storage"?
Forum: Geothermal & Heat Pumps 10-02-21, 06:45 PM
Replies: 8
Views: 664
Posted By NiHaoMike
R433b is pretty close to a drop in replacement,...

R433b is pretty close to a drop in replacement, it will require tweaking the TXV to perform its best so make sure the TXV is adjustable first.
Forum: Geothermal & Heat Pumps 07-30-21, 09:29 PM
Replies: 5
Views: 921
Posted By NiHaoMike
Is the water heater (presumably natural gas) in...

Is the water heater (presumably natural gas) in the garage? Might want to consider connecting a radiator (designed to withstand the water pressure) and circulating pump to it as a hot water fed space...
Forum: Solar Power 05-16-21, 08:30 PM
Replies: 26
Views: 11,519
Posted By NiHaoMike
Mostly completed the wireless sensor, what's left...

Mostly completed the wireless sensor, what's left is to validate that all of the features work properly and then conformal coat for installing into an outdoor breaker box.
Forum: Tools 05-06-21, 12:18 AM
Replies: 5
Views: 1,231
Posted By NiHaoMike
Arduino + thermocouple ADC board.

Arduino + thermocouple ADC board.
Forum: Appliances & Gadgets 04-09-21, 10:28 PM
Replies: 8
Views: 3,214
Posted By NiHaoMike
Just convert a server power supply into a...

Just convert a server power supply into a charger, now you'll be able to use a substantial percentage of the generator capacity.
Forum: EcoRenovator Blog Discussion 03-31-21, 01:11 AM
Replies: 13
Views: 4,753
Posted By NiHaoMike
Perhaps more investment in automated load...

Perhaps more investment in automated load management is the answer? The technology to make it happen (for example, Raspberry Pi or ESP32) is dirt cheap. Likewise, thermal storage for HVAC is also...
Forum: Solar Power 03-14-21, 11:10 PM
Replies: 26
Views: 11,519
Posted By NiHaoMike
Pretty big Pi Day update. I connected a pair of...

Pretty big Pi Day update. I connected a pair of AK5558 ADCs to the FPGA and managed to program the FPGA to work with them. I then used a Raspberry Pi to send the data stream over Ethernet to my PC so...
Forum: Appliances & Gadgets 02-25-21, 08:09 AM
Replies: 18
Views: 3,486
Posted By NiHaoMike
Ryzen and Intel Xe are the only integrated...

Ryzen and Intel Xe are the only integrated graphics worth buying nowadays for a new x86 machine. You can also consider some of the higher end ARM boards out there, the Pi 4 works great for regular...
Forum: Geothermal & Heat Pumps 12-12-20, 07:17 PM
Replies: 3
Views: 2,844
Posted By NiHaoMike
You can definitely look into thermal storage...

You can definitely look into thermal storage using "IBC totes". Basically, you'll add copper tubing inside the tanks to act as the heat exchanger and then fill the tanks with water to use as the...
Forum: Lawn and Garden 11-01-20, 08:18 AM
Replies: 10
Views: 3,767
Posted By NiHaoMike
Stovetop heating elements would probably be a...

Stovetop heating elements would probably be a better choice.
Forum: Solar Power 10-29-20, 09:34 PM
Replies: 15
Views: 4,202
Posted By NiHaoMike
Might want to take a look at server power...

Might want to take a look at server power supplies, commonly available into the low kW range. Modifying one to have MPPT is going to be tricky even if you're advanced with electronics.
Forum: Geothermal & Heat Pumps 09-19-20, 12:21 AM
Replies: 4
Views: 3,280
Posted By NiHaoMike
The mini splits with that feature are quite...

The mini splits with that feature are quite sophisticated, with a low resolution thermal IR sensor array, high resolution near IR sensor array, and an embedded Linux processor of similar compute...
Forum: The Billiards Room 09-05-20, 03:06 PM
Replies: 9
Views: 2,967
Posted By NiHaoMike
California's problems stem from years (decades?)...

California's problems stem from years (decades?) of neglect causing the old infrastructure to become a fire hazard.
Forum: Conservation 09-04-20, 09:11 PM
Replies: 189
Views: 55,205
Posted By NiHaoMike
Good quality batteries are rated to last...

Good quality batteries are rated to last thousands of complete cycles nowadays, even more for partial cycles. If you don't use them, they'll eventually die of old age.

Selling to the grid is not a...
Forum: Conservation 08-28-20, 09:59 AM
Replies: 189
Views: 55,205
Posted By NiHaoMike
It's not stealing any more than charging a laptop...

It's not stealing any more than charging a laptop or hybrid bicycle - there are power strips installed in the study areas specifically for that purpose. Keep in mind that the size of the battery is...
Forum: Appliances & Gadgets 08-10-20, 10:19 PM
Replies: 8
Views: 3,073
Posted By NiHaoMike
Definitely time for a better soldering iron....

Definitely time for a better soldering iron. Something like the TS-100 will handle 12AWG wires with ease. It uses integrated heater cartridges with better coupling than the older irons that merely...
Forum: Geothermal & Heat Pumps 07-30-20, 08:02 PM
Replies: 21
Views: 8,731
Posted By NiHaoMike
2 tons of refrigeration operating for one hour...

2 tons of refrigeration operating for one hour will only make 183 pounds of ice, or about 23 gallons.

What is the end goal now? Are we building an EV that regularly gets driven (in which case...
Forum: Conservation 07-30-20, 07:36 PM
Replies: 8
Views: 3,461
Posted By NiHaoMike
There are smart plugs with energy monitoring.

There are smart plugs with energy monitoring.
Forum: Conservation 07-22-20, 10:18 PM
Replies: 189
Views: 55,205
Posted By NiHaoMike
Try increasing the PWM frequency to above 20kHz.

Try increasing the PWM frequency to above 20kHz.
Forum: Geothermal & Heat Pumps 07-22-20, 09:30 AM
Replies: 20
Views: 7,481
Posted By NiHaoMike
The first one will also do surface mount reflow...

The first one will also do surface mount reflow (an advanced process), but I'm not sure about the overall build quality. Might be worth considering if you're planning to do more advanced electronics...
Showing results 1 to 25 of 500

 
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