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ARTS-Laboratory
An in situ water quality sensor for monitoring water quality
| Reference | Value | Description |
|---|---|---|
| Q1 | 2N2222A | |
| U1 | NRF24L01+PA+LNA | Ultra low power 2.4GHz RF Transceiver, Carrier PCB |
| U2 | ProMicro | |
| U3 | EZO_PH | |
| U4 | EZO_TDS | |
| U5 | DC-DC STPDN LM2596 | module : adjustable step down module 3.2V-40V to 1.25V-35V 3A |
| U6 |
| U7 | BOB-12009, level shifter |
|---|
| U8 | AMS1117 3.3v | 1A Low Dropout regulator, positive, adjustable output, SOT-223 |
|---|
| C1,C2 | C_Polarized | Polarized capacitor |
|---|
| D1 | D_Schottky | Schottky diode |
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| D2,D3 | LED | Light emitting diode |
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| J1 | TDS PRB |
|---|
| J2 | Temp |
|---|
| J3 | BAT |
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| J4 | TRBDT |
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| J5 | CHRG |
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| J6 | Conn_Coaxial_Small | small coaxial connector (BNC, SMA, SMB, SMC, Cinch/RCA, LEMO, ...) |
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| P1 | SD card socket |
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| R1 | 1K | Resistor |
|---|
| R2,R4 | 4.7K | Resistor |
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| R3 | 470 | Resistor |
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| R5,R6 | 160 | Resistor |
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| R7,R8 | 100K | Resistor |
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