locked/picowatercmake -DPICOBOARD=picow -DWIFISSID=" " -DWIFIPASSWORD=" " -DSERVERIP=" " -DSERVERPORT= ..
Picowater is an open-source printed circuit board by locked, from the locked/picowater repository on GitHub. It is a 2-layer board of 98 × 56 mm with 56 parts on 74 nets, routed with 345 tracks and 47 vias.
It is built around the PCF8563T/5, SN74HC74N and RJ45, with the BC817 and G5Q-14-DC5 among its other parts. Its parts include 14 resistors, 13 connectors, 9 capacitors, 5 ICs and 3 diodes. It belongs with the RP2040 boards of this library.
cd build
cmake -DPICO_BOARD=pico_w -DWIFI_SSID="" -DWIFI_PASSWORD="" -DSERVER_IP="" -DSERVER_PORT= ..
make
https://github.com/iiot2k/pico-lib2/blob/main/src/dev/dev_ds3231/dev_ds3231.c
https://ghubcoder.github.io/posts/awaking-the-pico/
https://github.com/ghubcoder/PicoSleepRtc/blob/master/ds3232rtc.cpp
https://github.com/raspberrypi/pico-examples/blob/master/adc/hello_adc/hello_adc.c
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | Lunasys_Library:hole_5mm | H1, H2, H3, H4 |
| 3 | 10K | Resistor_SMD:R_0402_1005Metric | R5, R6, R8 |
| 3 | RJ45 | Connector_RJ:RJ45_BEL_SS74301-00x_Vertical | J13, J14, J15 |
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C8, C9 |
| 2 | 100K | Resistor_SMD:R_0402_1005Metric | R1, R4 |
| 2 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C3 |
| 2 | 220 | Resistor_SMD:R_0402_1005Metric | R10, R13 |
| 2 | 4K7 | Capacitor_SMD:C_0603_1608Metric | R11, R12 |
| 2 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 1 | +12V | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J1 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D8.0mm_P3.80mm | C6 |
| 1 | 10uH | Capacitor_SMD:C_0805_2012Metric | L1 |
| 1 | 12V TP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | 1A 20V Schottky | Diode_SMD:D_SOD-123F | D1 |
| 1 | 1N4007 | Diode_SMD:D_SOD-123 | D3 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 200K | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 22pF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 22u | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 34K | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 3V Cell | cell:MPD_BC501SM-TR_custom | BT2 |
| 1 | 4.7K | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 5V TP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | 900K | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | Batt TP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J10 |
| 1 | Crystal | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | G5Q-14-DC5 | Relay_THT:Relay_SPDT_Omron-G5Q-1 | K1 |
| 1 | GPIO2 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J7 |
| 1 | Int. Bat | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | JST-PH2 Bat | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J6 |
| 1 | Jmp_CLKOUT | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP2 |
| 1 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D4 |
| 1 | MAX77596 | Lunasys_Library:TDFN-10-EP_2.5mm | U5 |
| 1 | MCP9808_MSOP | Package_SO:MSOP-8_3x3mm_P0.65mm | U6 |
| 1 | PCF8563T | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | Pico | picogus_library:RPi_Pico_SMD_TH | U1 |
| 1 | Power In | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | J2 |
| 1 | SCREEN | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | SN74HC74N | Package_SO:SO-14_5.3x10.2mm_P1.27mm | U2 |
| 1 | SW_Push_SLIM | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx31-2LFS | SW1 |
| 1 | UART | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J4 |
It measures 98 × 56 mm and has 2 copper layers, 1.6 mm thick.
56 parts, built around the PCF8563T/5, SN74HC74N, RJ45 and BC817. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the locked/picowater repository on GitHub, at the commit this page was made from: the board is hw/picowater.kicad_pcb and its schematic hw/picowater.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask locked before reusing the design.
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