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FOUR FANS CONTROLLER - A SELF-ASSEMBLY KIT
Computer fans are suitable for cooling not only PCs but also for any electronic device. A set of four such fans can be useful in the workshop of every constructor electronics.
The system consists of four identical blocks. Each used an operational amplifier working as a comparator. It compares the voltage from a divider whose element is a thermistor with a reference voltage. If the thermistor resistance drops (the temperature rises), the voltage at the corresponding input of the comparator will drop. On its output will then be the voltage controlling the transistor switching the fan.
The device is particularly recommended in devices that emit a lot of heat
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Cobbler Plus - adapter enabling connection of GPIO Raspberry Pi A +, B + and Pi 2 lines to the contact plate (2.54 mm). The version is assembled. Adafruit 2029
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HK Turnigy nano-tech 1450mAh 2S1P 20~40C LiFePo4 Receiver Pack (23822)
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CryptoShield is a dedicated security peripheral for the Arduino. This shield adds specialized ICs that perform various cryptographic operations which will allow you to add a hardware security layer to your Arduino project. It also is a nice device for those performing embedded security research. DEV-13183
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FOUR FANS CONTROLLER - A SELF-ASSEMBLY KIT