Check the listing for details. Easy DIY Plans Build 1or2 Axis Solar Controller w Auto East Reset for Tracker . Condition: New. Listed at 15.95 USD. Notice to eBay: I am the owner of the underlying rights, including intellectual property rights to this item. Learn How to Build a Solar Tracker Controller with Auto East Reset Ok, so you have some actuator motors and an array frame but need a solar tracker “brain” controller. You could buy one but most do not have the automatic array return back to the East reset function so your array is ready to face the rising sun the next day. My design does. Consider building (mostly just assembly) your own, but not from scratch, but by minor modification and re-purposing a common already made relay module and a certain lighting item. You will make a frame or enclosure to mount the solar cells and the relay module circuitry, otherwise see more below. Just follow my instructions to assemble. It is not a toy: It can operate large solar arrays. Don't be mislead by the photos, as at the time I did not have a traditional solar panel array to show so I used a tiny working demo system. I have designed a very simple and reliable unit that you can replicate. All the necessary information has been put in several PDF files that are easy to follow and include pictures. This is copyrighted information and all purchasers must agree to use this information strictly for your personal use and never for commercial use or sales of any kind. Read the full Nondisclosure Terms near the end. You will be able to build a simple single or dual axis solar tracker controller using a certain modified relay control module(s) and some solar cells which can be purchased online usually for under $10 per axis. Add some limit switches, resistors, etc and an enclosure box, to build the basic solar tracker controller. This is a quick build. Excluding ordering parts or any paint/glue drying it is expected to not take more than an afternoon from start to operating as a basic tracker. Next add the true automatic east reset (go home at sunset) capability. This will allow the tracker to send the array to the east after sunset and therefore the array is ready and waiting for the early sunrise which in effect extends the solar energy capture hours of the day. The design uses a simple, easy to install and super cheap add-on circuit that may only take an hour to setup. The add-on circuit consists of a certain repurposed (hacked) pcb (printed circuit board) out of a common item you can purchase locally for $1-2 dollars along with a few electronic components that you may already have or can be bought in many places. This design is meant to be used on any size solar array. My technical reports will give full details for building the tracker, the auto east reset upgrade along with parts list and an electrical schematic block diagram. The descriptions will describe a single axis system, but it is understood, that you only have to build a duplicate controller for use as a second axis. In the descriptions, you would replace references of east and west with up and down as appropriate. Also, the sensor head orientation for up/down is 90 degrees offset from east/west orientation. The auto east return upgrade feature is only installed on the east/west controller. It is not needed for up/down control unless your situation only uses up/down on a single axis. I can also sell a limited quantity of certain parts or an already modified circuit board for those not wanting to deal with soldering a few SMT components. Email me if you want to purchase some parts either stock or modified. Refer to the pictures to see the sensor head and inside the controller box. (Blurred for security) And yes, that is a cardboard box housing used just for R&D testing only. Your unit would likely use a polycarbonate or metal box. The box was over kill in size as the pcb and circuitry is actually quite small. This may possibly be the cheapest high power (10 Amp) tracker controller available on the market when you build it yourself using the information I will share with you. Newly released, these technical reports (digital PDF file) are proprietary information and is being sold with Nondisclosure and Noncommercial Use Terms. Also I must have your (legal) name and address for legal record. If your eBay order does not already show said information, then you can email it to me. Orders placed will not be honored until said information is provided. Rejected orders will be refunded. Quick Technical Specifications: •Single axis tracking with one unit or make two units to have dual axis tracking. •High power isolated relay outputs rated at 10A for 28/30VDC and 10A for 125/250VAC. Allows many choices of actuator motors and voltages. •12VDC nominal low power source required for the internal circuit board logic needs. If your motors are 12VDC then only one power supply is needed (as long as it can deliver enough amps) to operate both. But if your motors are 24VDC, as an example, then you will need a 12VDC and a 24VDC power source. It is Ok to share common grounds. •Leakage current. Little or no leakage or standby power robbing circuits by design. The Power On LED is the only major power leech but can be removed/disabled if desired. Note: The SunMagnet 100 Solar Tracker Controller is ideal for applications in a shade free/tree branch, shadow free area with mostly full bright Sun. It is not recommended for very shade spotty areas with trees, as it can and will cause erratic tracking. The technical reports gives extensive construction details with sketches and pictures. Main Design Features (for Dual Axis includes Up/Down controls): •Simple operation. Has Auto/Manual, East and West controls. Also it has a Motor Enable/Disable feature for testing or experiments. •LED indicators on the circuit board to show East & West commands and Power On status. •Only one adjustment. Move the Sensor Housing to align your solar array to the sun. Tighten the wing nut. Simple. •Quick build. Excluding ordering parts or any paint/glue drying it is expected to not take more than an afternoon from start to operating. •Cost. Easy to repair, but so cheap it can be thrown away and replaced with new parts. •No software, so anyone can work on it if needed. •No microprocessor, as we don’t want the “freezes” or reboots or sensitivity to heat or the power leaching. •No op-amps to require tuning/adjusting. •No pots to adjust. •Simple effective circuitry. Draws minimum or no leaching currents especially at night. •Reliable circuit components in hot/cold environments. •No glass dome required, to avoid condensation fogging or breaking in the winter. •Rigid sensor housing for stability in moderate winds. Skills You Need for the Building Process: •Electricity/Electronics. Just basic knowledge, batteries, solar cells, continuity checks, measure voltage and amps if needed. Will need to calculate wire size for amp capacity and fuse rating as each application is unique to the actuator motor used. •Ability to read and follow the circuit schematic, wiring and block diagrams. Able to identify common SMD components on the circuit board. •Soldering. Able to solder wires or modifying the special circuit board by changing some SMD components and soldering small jumper wires. •Mechanical. Able to work with small sheet metal, drill holes in a box and install switches, painting, caulking, mounting controller to your existing solar array. •Wiring. Run small and up to 10A rated wiring. Connect by soldering, wire nuts and screws at terminal blocks. In the technical reports, I will explain: • How the solar controller works using the special modified circuit board. • Enough details on the design so you can build your own or learn from my design to scale up or go beyond. You must still comply with the personal use terms note further below. Making minor changes or adding features does not evade compliance to the agreement as this design is very flexible and many different new features can be used. • Parts. Not only what parts you will need, but in many cases why I used what I did so you can make choices intelligently when modifying or substituting materials. Only the circuit board(s) is special and most other items can have alternative choices often only requiring verifying that the voltage and amp ratings of components are never exceed. Also some items on the circuit schematic can be ignored/bypassed depending on the application. You will be getting the use of my proprietary information for personal non-commercial use This information is not available anywhere except from me. Why you should buy my SolarMagnet info: • Cost. It is possible to build a dual axis controller with auto east reset or run 2 solar arrays for the cost some are selling a single axis unit. • Power. Operate motors of many voltage choices up to 10A, but if that is not enough, you can scale up the design easily when ready using your own modifications. • Flexible non-critical design. Many components can be substituted. Don’t like the mechanical relay outputs? No problem, either replace with solid state relays or use the relays as masters to drive your own external monster slave relays. • Up-time. Repairs cost money and time. By building it yourself, you will be able to troubleshoot and repair it quickly and cheaply. Buy somebody else’s unit and you are at their mercy for software code, programming, parts discontinuation or availability, ship back time for repairs etc. The technical reports cover plenty of details to allow you to build a unit(s) with similar actions as my prototype. You will get results similar to mine if the information is followed. Safety Notice: Electricity can be dangerous. As previously noted the reader should be knowledgeable of basic ac/dc electricity. If you don’t know about these things then please work with a friend that does or get training first. Conclusion: The SunMagnet 100 Solar Tracker Controller has been tested as a prototype here in the hot summer heat of Florida very successfully without any failures. As there is no ice or snow here, I will welcome feedback from users how I can further improve the design if needed for colder areas. But I do not expect any major changes. Questions: If you have questions on use or applications, please do email me. Warranty or Returns: There is no warranty or returns for refund allowed on this proprietary information. Once you have received or read the information the “cat is out of the bag” and cannot be returned. If you question my good will, please do look at my Feedback and see that I try to always be a fair person. The opinions and beliefs expressed in the technical reports are entirely my own unless stated otherwise Liability: The item(s) advertised is provided "as is" and without any warranties as to performance or merchantability, or any other warranties, whether expressed or implied. The winning bidder (User) accepts the purchase "with all faults". No warranty of fitness for a particular purpose is made with respect to the item(s) for sale. The User assumes the entire risk of using the item(s). Under no circumstances shall the Seller be required or obliged to provide any support or assistance to the User with respect to the item(s) for sale. Legal: All Purchasers must agree to: Nondisclosure Terms Effective 04/18/2017 By purchasing the technical report PDF files, Build a SunMagnet 100 Solar Tracker Controller DIY and/or any other SunMagnet 100 related product, you agree to be bound by all copyright laws and the following. If you buy these technical reports, your purchase receipt and this page is your legally binding agreement and confirms that you agree to use this information strictly for your personal use and never for commercial use or sales of any kind. Please save a copy for your records. You may not make this information available on websites, forums, clubs or to groups or private individuals etc except within the confines given below and as long it would not hurt future sales by the author or his authorized affiliates. You may make demonstrations and show others your SunMagnet 100 Solar Tracker Controller unit and/or any upgrade features provided none of the unique details of theory or construction are revealed. You may recommend the technical reports at anytime. You may not sell, represent the author or inventor, distribute or otherwise provide this information to third parties nor will you build and sell machines/parts/minor improvements based on this information to others or commercial interests. You may not alter the technical reports or create derivative works without authority. You may keep a backup copy for yourself. You are permitted to write/speak brief quotes from the technical reports to enlighten any audience when desired. You may not suggest the SunMagnet 100 Solar Tracker Controller design or available upgrades are your own invention or intellectual property in any way. You agree to give credit to the author and inventor in this work for the invention and information provided. You agree to leave the author or affiliates harmless of any damages, endangerment to life or other activities related to the information given in the technical report. The technical reports and build of the solar tracker controller is meant for enlightenment or entertainment purposes only. No guarantee of validity is given and the buyer must accept any or all faults found in the work. Any deviations from these conditions or if you would like to resell my work, please contact the author to discuss the matter. No deviation of these conditions will be accepted without a written and signed agreement between the author and other parties. Shipping: Free for digital files, at cost for photocopy & shipping This is a digital product, not a physical item, sent to you in Adobe pdf file format at your computer within 24hrs or much sooner, after check out. I can print out the report at a copy place and mail it to you for an additional printing and shipping charge which may not be cost effective to you. The option is there if needed. Don’t forget, I must have your (legal) name and address for record. If your eBay order does not already show said information, then you can email it to me. Orders placed will not be honored until said information is provided. Rejected orders will be refunded. By making your purchase, you agree to the above Nondisclosure Terms. You will receive them as digital products in Adobe pdf file format at your computer within 24hrs or much sooner after check out. What You will Get: •Build a SunMagnet 100 Solar Tracker Controller DIY (technical report, PDF format) •SunMagnet 100 Solar Tracker Controller Parts & Description (PDF format) •True Auto East Reset Upgrade for the SunMagnet 100 Solar Tracker Controller (technical report, PDF format) Thank you for your consideration!