![]() Using 4 AA batteries running through a 5V LM7805T voltage regulator powered the PICAXE controller, its outputs and the temperature sensor. The PICAXE-18m2 microcontroller cannot support a voltage much higher than 5V, so if the batteries used exceeded 5V, a voltage regulator would be required. To reduce the amount of installation required and the amount of wires needed for the design, the battery method was used. There were two options to power the blinds: either to plug them into an electrical outlet via a transformer or to power it using batteries. ![]() Though the cheaper PICAXE-08m would be satisfactory for this project, the PICAXE-18m2 model was chosen just in case more inputs would be needed for future alterations of the project. The PICAXE controller was chosen to be the optimal microcontroller after assessing the required functionality and cost. In order to control a motor based on light and temperature readings, a microcontroller is needed. This will allow the smart blinds to be used on any set of venetian blinds. One of the best designs for motorized blinds would be to create a box containing the circuitry and motor and simply attach the motor to the blinds via a hook. Many of the components used in the original schematic were substituted to slightly different specifications, and to reduce shipping costs. The general design of the smart blind technology is based off of the schematic provided by a user on named biochemtronics. With the motorized blinds installed, it will be much easier to decorate the interior of the test house with living plants, while also eliminating the need to manually open the blinds for daily demonstration purposes. This placement will ensure that the blinds operate at the right times and will be able to measure the temperature due to the sun exposure more accurately. Additionally, these blinds will contain a temperature sensor to close the blinds if the interior becomes too warm.Īutomatic motorized blinds should be put on the south windows in a North American household as the south facade has more sun exposure. The goal of this project is to open the tilt of the blinds during the day and close them at night, allowing natural light to fill the house during the day and giving privacy in the evening. It would be more cost-effective to install a custom motor attached to a circuit box able to control the tilt of manual blinds based on ambient settings. Though there are many blinds on the market that come with motors, they are often very expensive and do not have automatic elements installed. The prototype is based of the design from the user biochemtronics. This prototype of smart motorized blinds was created by the Queen's Solar Design Team to put into a demonstration solar home.
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