4 layers48 × 35 mm
2 layers40 × 50 mm
Isolated Hexa UART-USB bridge based on the RP2350 - Named after Ponder Stibbons, Head of Inadvisably Applied Magic, and Reader in Invisible Writings.
- Size
- 40 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 136
- Nets
- 127
- Pads
- 446
- Tracks, vias
- 755, 84
- Pours
- 53
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 3 Sep 2024
- Updated
- 28 Oct 2024
Overview
Ponder is an open-source printed circuit board by DiagnosticsMonkey, from the DiagnosticsMonkey/Tool-Ponder repository on GitHub. It is a 2-layer board of 40 × 50 mm with 136 parts on 127 nets, routed with 755 tracks and 84 vias.
It is built around the W25Q64JVXGIQ TR and ABM8-272-T3. Its parts include 48 resistors, 32 capacitors, 15 connectors, 10 diodes and 9 ICs. It belongs with the interfaces and adapters boards and the RP2350 boards of this library.
Main components
2README
README.mdReadMe
Ponder is designed to act as 6, electrically isolated, UART to USB bridges using the RP2035B. Connect the board to your PC, and be served 6, driverless, COM-ports or ttyACM devices.
Documentation
Documentation is captured in Markdown and is available in /docs, rendered using docsify here.
Design files
All of the design files are included in this repository.
Hardware
Hardware design files are in /hardware.
Generated outputs such as Schematic, BoM, and Gerbers are all included.
Software
Nominal software is available TBD.
Parts
136| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C3, C10, C11, C12, C18, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30 +8 |
| 19 | 10k | Resistor_SMD:R_0402_1005Metric | R23, R24, R26, R27, R29, R30, R32, R33, R36, R37, R38, R39, R43, R44, R45, R46 +3 |
| 12 | 1k | Resistor_SMD:R_0402_1005Metric | R4, R8, R9, R22, R25, R28, R31, R34, R35, R40, R41, R42 |
| 12 | 50 | Resistor_SMD:R_0402_1005Metric | R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21 |
| 12 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12 |
| 9 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 6 | 18012115411H | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4, U5, U6, U7, U8, U9 |
| 6 | 2.54 HDR | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal | J2, J3, J4, J5, J6, J7 |
| 5 | 1.27 HDR | Connector_PinHeader_1.27mm:PinHeader_1x03_P1.27mm_Vertical | J9, J12, J13, J14, J15 |
| 4 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2, H3, H4 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C13, C14 |
| 2 | 15p | Capacitor_SMD:C_0402_1005Metric | C19, C20 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 2 | 4.7u | Capacitor_SMD:C_0402_1005Metric | C2, C15 |
| 2 | 4.7u | Ponder:C_0402_1005Metric_small_pads | C16, C17 |
| 2 | 434133025816 | Button_Switch_SMD:SW_Push_1P1T_NO_Vertical_Wuerth_434133025816 | SW1, SW2 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 2.54 HDR | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical_SMD_Pin1Left | J11 |
| 1 | 2.54 SKT | Ponder:M208890245 | J10 |
| 1 | 2.54 SKT | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Horizontal | J8 |
| 1 | 3.3u | Ponder:L_pol_2016 | L1 |
| 1 | 33 | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | Crest | Ponder:Crest-10mm | G2 |
| 1 | ModStrike | Ponder:ModStrike | G1 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | NSR0530HT1G | Diode_SMD:D_SOD-323 | D10 |
| 1 | RP2350_80QFN | Ponder:RP2350-QFN-80-1EP_10x10_P0.4mm_EP3.4x3.4mm_ThermalVias | U3 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | W25Q64JVXGIQ_TR | Ponder:SON80P400X400X50-9N | U2 |
Questions
How big is the Ponder PCB?
It measures 40 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ponder use?
136 parts, built around the W25Q64JVXGIQ TR and ABM8-272-T3. 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.
Where can I download the Ponder KiCad files?
From the DiagnosticsMonkey/Tool-Ponder repository on GitHub, at the commit this page was made from: the board is hardware/Ponder.kicad_pcb and its schematic hardware/Ponder.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ponder design in my own project?
Its repository states no licence, so its author keeps all rights: ask DiagnosticsMonkey before reusing the design.
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