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Here is a bluetooth enabled Arduino garbage monitoring device that indicates the level of the trash in the bin alerting everyone, with the use of a simple mobile app. This small home improvement has lead to a more efficient system.
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RyanM415 built an Teensy 3.6 powered car display using an on-board diagnostics (OBD-II) adapter from Freematics and a 7″ TFT LCD from Adafruit. The display has two pages: one shows off when the car is in drive and the other for when it is in reverse gear. During driving mode, it displays the RPM, MPH, engine load percentage, battery voltage, cabin temperature, and engine coolant temperature. And in reverse mode, the Arduino IDE compatible Teensy 3.6 reads an animated bitmap image of the car and displays it along with the readings from the backup sensors.
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Andy Brown is fond of beers and he loves homebrewing. To automate the temperature control required for fermentation and conditioning process, he designed a process-controller based on Arduino processor that allows precise switching of three relays to control the heaters, fridge and fans that are the parts of the temperature controlling mechanism in his brew fridge. The controller also features a triac for phase-angle dimming that is helpful for proportional heater or fan control. The device connects to a host PC via USB. Find details here.
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Tecwyn Twmffat built an Arduino-based Cell Phone 4G Signal Booster. Living on an island in the middle of nowhere, mobile/cell phone reception can be rather intermittent and it seems that there is currently no reliable open source gadget that could help me solve this problem on my kind of budget. I do have the option of using ‘cable phone’ but being of a general ‘Pirate’ disposition I thought it would be a better idea to do all my phone calls, emails and data transactions by cell phone and save a whole bunch of dollars by not having to pay for land
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Amardes built an Arduino-powered relay controller that can be used to the sprinkler systems in your garden. It uses the DS3231 I2C precision RTC module with battery backup for time keeping.
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