Here is how to build my Uber UPS Backup System on the cheap. First you will need to obtain a suitable UPS unit to start with, I recommend at least a 350 watt unit. I picked up mine at the Goodwill store for $6.00. After that it’s quite simple. Remove the stock battery, that is usually bad if you get one at a 2nd hand store like I did, and crimp on two quick release connectors to the red (+) and black (-) battery connection wires. Then do the same with the wires going to your new batteries. The wire size for the battery connection should be no smaller than 12 gauge for this project. I suggest that you always go male/female to the UPS unit and also on the battery cables so you won’t be able to accidentally reverse polarity. If you are using more than one battery like I am it’s also a good idea to put a in-line 10 amp fuse between the batteries for overload protection. For the batteries I use two AGM 35 amp sealed lead acid batteries. You should be able to get these from your local battery speciality store or if you live in the St. Petersburg, FL area go to Electro Battery where you can pick up a refurbished battery for around $25.00. I also recommend that you use your soldering iron and tin all of the wire connections for circuit reliability. When you are finished, put a load on the system and test it by unplugging the UPS unit from its electrical source. As always if you have any questions on this build you can contact me for assistance.
What is a makerspace? Also known as hackerspaces, hackspaces, and fablabs, makerspaces are creative, DIY places where people with common interests gather to create, invent, collaborate, and learn. In an open community lab, workbench, machine shop, or workshop environment, people share resources and knowledge. Makerspaces often have 3D printers and various fabrication tools, and related software, electronics, craft and hardware supplies, and more.
St. Pete Makers is part of a growing global makerspace movement that is based on collaboration. We provide an opportunity for creators to connect with each other and with the larger community. We are a collection of builders, makers, and artists. We promote science, technology, engineering, arts, and mathematics by providing resources, teaching classes, and participating in events. Our members use our makerspace to work on projects, share ideas, and help each other create that which they have envisioned. Visit http://www.stpetemakers.org for more information.
I needed a simple timer control relay module for a project I was working on for a client and found this one on E-bay for $4.47. It worked perfectly for my application and you can’t beat it for the price. This is a delay timer module with high performance, which is convenient and practical for users.
New upgrades to simplify, meeting the users’ needs. LED digital display, normally open and trigger delay 12V relay, can be triggered by external signals. This module is high-level trigger, counting time range is 0-999s. The use of opto isolated input and output, enhanced anti-jamming capability and consumption. The last setting parameters can be memorized after power off. With low consumption working mode, long-press the left key can control the LED display. To ensure stability, industrial grade PCB board.
Working mode: when powered on, relay doesn’t work. Trigger point connects with keys or PNP-type sensor, when high level triggers the relay begins to work, countdown delay. The relay will switch off when the delay time is out.
Timing Range: 0~999 seconds
Working Voltage: DC 12V
Output Capacity: Can Control the Load within DC 30V 10A or AC 250V 10A
Standby Current: 12mA
Working Current: 50mA
Working Temperature: -40~85°C
PCB Size: 65 * 35mm/ 2.56 * 1.4in (L * W)
PCB Weight: 24g / 0.87oz
After taking a direct hit from Hurricane Irma DSP was without utility power for six days. Fortunately I have two solar power generators that provided all the power I needed for lighting, cooking, cooling, communications, computers and entertainment. My large 3.5 Kw generator was the backbone to my off the grid power needs and my small 300 watt portable generator ran my QRP (low power) HAM radios and laptop. This disaster proved what I already knew, emergency solar power is a must have in this day and age of uncertainty. While my neighbors gasoline powered generators were running out of gas and fuel was not easily obtainable I was just fine with my clean and quite renewable electricity sources. The damage to Puerto Rico’s power grid from Hurricane Maria also teaches us a very important lesson for the need of solar power. The extensive damage to Puerto Rico’s antiquated power grid will leave residents without power for possibly six months or even more in some areas. Heavy weather is not the only danger to the nations power grid. Major solar flares, hacker attacks or a electromagnetic pulse (EMP) strike could bring down the grid for extended periods of time leaving you in the dark. These dangers are real and you must prepare now before it’s too late. If you are interested in a affordable solar power generator to meet your basic electrical needs in case of a outage please contact me for a free consultation.