Lucas Käldström and Chris Short Talk Kubernetes, Physics, and More

Double check that you're running this command on the Raspberry Pi over SSH or by using a keyboard and monitor. Then on the Raspberry Pi, run lsblk to check that the NVMe is showing up, it should show as /dev/nvme0n1. Right. So with, with good ops, for example, then you start saying, you start from nothing. For example, you connect the positive and negative wire of a volt meter to the positive and negative terminal of a battery. If your battery meter reads 12V in this situation, you should not discharge it further to prevent premature aging. Although most charge controllers will display the battery voltage, you often need to press a button to show it. Furthermore, it is often higher than what your devices need. When your devices run on different voltages, first split power and then put a DC-DC converter in every circuit. First of all, many devices are internally running on low-voltage power. Other practical instruments are watt, voltage, what is control cable and current meters. V&A meters that show fluctuating values can be both. All this can happen automatically using electronics, but also manually. That concerns all USB appliances, solid-state lighting (LEDs), other electronics, and wireless power tools. You can calculate this quickly with online tools.

That requires you to know how much current is produced by your solar panel(s), information which you can find on the backside. Both charge controllers (for use with a battery solar system) and DC-DC converters (for use with a direct solar system) need to be compatible with the voltage produced by the solar panel. On the other hand, if you use a 12V solar panel without a battery, you need a DC-DC converter input that corresponds to the voltage output of the solar panel (19-20V in full sun). For example, if your solar panel produces 3A of current, you need a DC-DC converter or solar charge controller that withstands at least 3A of current. Also, be very careful when handling a solar panel with its front side lying flat on a surface, which happens, for example, when you screw it against a wood support. The solar panel is now firmly fixed to a wood structure. However, the interesting stuff is now largely encrypted digital, or has moved to satellites. However, a support structure that allows the panel to vary its tilt according to the seasons is usually good enough.

Build the support structure sturdy enough. I have also made the bases of the structure heavier with rocks and defunct lead-acid batteries. With this cable and normal PC sound input I have successfully encoded and decoded both CW (CwGet/CwType) and FT8 (WSJT-X), of course a plethora of other data modes can be used such as SSTV or other AFSK, and combined with a CAT protocol application such as HRD, it can be used for automatic logging purposes. Chris Short: yourself or get another cat. An RJ45 (Ethernet) patch cable or plug is much easier to come by in your "hamshack" than an 8-pin mini DIN for the CAT interface… The 12V counterpart of the power outlet (the so-called cigarette lighter plug) is the most common type, but there are alternatives. You plug them in or out depending on the appliance you want to use. Use lsblk to find out which device name you have for the SD card writer on your PC. And we have learned from that the world is not as easy or like simple as we think it is. Um, like the harm of failure, right? It is placed in the positive wire, just like a fuse.

Current meters are a bit more complex to wire, see the illustration below. 11 A handy tool is a wire stripper to remove the protective coating at the end of each wire, exposing the copper. In that way, solar energy that would otherwise go to waste can charge a laptop or operate a power tool. Because the elevation and orientation of the sun vary throughout the day and the year, a solar panel with a fixed position does not make optimal use of solar energy. Tilting the panels into an almost vertical position is the key to harvesting sufficient solar power during winter when energy shortages are most probable. That means you are wasting solar energy. Current meters are helpful to optimize energy efficiency. They also help you to optimize energy efficiency. The biggest drawback of low-voltage power is its relatively high energy loss during transmission, especially for powerful devices. However, the battery voltage reflects the correct storage capacity only when there is no active power supply (the solar panel doesn’t work) and no electric load (no device connected). The cheapest DC-DC converters only take 2A to 5A, while the lowest-cost solar charge controllers take a maximum of 5A. Charge controllers and DC-DC converters get more expensive as their current capacity increases.