WrenDAQ2 

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Bottom cover of the WrenDAQ2. The weatherproof connector on the left is for connecting the external temperature sensor, anemometer, and RPM sensor. The middle feedthru is for DC, AC (to pickup frequency), and ground. The antenna on the left is for the 900 MHz ISM modem.
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Bottom cover of the WrenDAQ2. The weatherproof connector on the left is for connecting the external temperature sensor, anemometer, and RPM sensor. The middle feedthru is for DC, AC (to pickup frequency), and ground. The antenna on the left is for the 900 MHz ISM modem.
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One of two WrenDAQ2 circuit boards. This board has a current sensor (marked U1), a switching power supply module (marked U2), crowbar over voltage protection, and a AC frequency pickup. It connect to the other circuit board with a 10 pin ribbon cable plugged in to J2. The brass hardware on the left attaches the 900 MHz antenna. The white wires on the right are to the weatherproof sensor connector.
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One of two WrenDAQ2 circuit boards. This board has a current sensor (marked U1), a switching power supply module (marked U2), crowbar over voltage protection, and a AC frequency pickup. It connect to the other circuit board with a 10 pin ribbon cable plugged in to J2. The brass hardware on the left attaches the 900 MHz antenna. The white wires on the right are to the weatherproof sensor connector.
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WrenDAQ2 main circuit board. There is a PIC18F2610 microcontroller (U5) in the center of the board. The passive parts on the left are low-pass filters for the anemometer and RPM inputs. The passive parts at the op-amp (U3) are low pass filters for the analog inputs. There is an onboard temperature sensor (U4). On the right is a point-of-load regulator that takes the 8 volts from the switching power supply on the other board and regulates to 5 volts. U6 is a precision 5.00 voltage reference for the ADC.
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WrenDAQ2 main circuit board. There is a PIC18F2610 microcontroller (U5) in the center of the board. The passive parts on the left are low-pass filters for the anemometer and RPM inputs. The passive parts at the op-amp (U3) are low pass filters for the analog inputs. There is an onboard temperature sensor (U4). On the right is a point-of-load regulator that takes the 8 volts from the switching power supply on the other board and regulates to 5 volts. U6 is a precision 5.00 voltage reference for the ADC.
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