
TFPROBE01
ThunderFly-aerospace/TFPROBE01
Omnipolar magnetic and reflective optical probe.

Moved to https://git.salamon.xyz/adrian/clock-clock-24
Klock pcb is an open-source printed circuit board by adriansalamon, from the adriansalamon/clock-clock-24 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 250 × 56 mm with 45 parts on 86 nets, routed with 801 tracks and 82 vias.
It is built around the AH3572-P-B, 74AHC595D and DS3231S#, with the BSS138 among its other parts. Its parts include 17 ICs, 13 capacitors, 4 resistors, 3 connectors and 2 transistors. It belongs with the lEDs and displays boards and the ESP32, AVR (ATmega, ATtiny) and RISC-V boards of this library.
My own take/version of the ClockClock 24 by Humans Since 1982 - A digital clock made from 24 analog clocks. All credit goes to them for coming up with such an awesome design.
My version is made 100% from scratch using my own hardware design. Mine is also slightly smaller, made to fit perfectly on my shelf. This design uses 6 Arduino nanos, each in control of 4 individual clocks, and an ESP32 which orchestrates and sends commands to all Arduinos.
The physical clock is made from MDF, which was routed using a 3d printed jig (I don't own a CNC). That process will not be published.
The software is still WIP and not finished.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12 |
| 8 | AH3572 | Adrian_library:AH3572-SOT-23 | U1, U2, U3, U4, U5, U6, U7, U8 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | VID28-XX | Adrian_library:VID28-XX_DownMount | U9, U11, U12, U14 |
| 2 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | Conn_01x04 | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J1, J2 |
| 2 | MS_X12.017 | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U10, U13 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13 |
| 1 | 1220 | Battery:BatteryHolder_Keystone_3001_1x12mm | BT1 |
| 1 | 74AHC595 | Package_DIP:DIP-16_W7.62mm | U15 |
| 1 | Arduino_Nano_Every | Module:Arduino_Nano | A1 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | DS3231 | Package_SO:SOIC-16W_7.5x10.3mm_P1.27mm | U16 |
| 1 | MOUDLE-SEEEDUINO-XIAO-ESP32C3 | seeduino:seeduino-MOUDLE14P-THT | U18 |
It measures 250 × 56 mm and has 2 copper layers, 1.6 mm thick.
45 parts, built around the AH3572-P-B, 74AHC595D, DS3231S# and BSS138. 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 adriansalamon/clock-clock-24 repository on GitHub, at the commit this page was made from: the board is hardware/klock_pcb.kicad_pcb and its schematic hardware/klock_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

ThunderFly-aerospace/TFPROBE01
Omnipolar magnetic and reflective optical probe.

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