2 layers43.9 × 27.7 mm
2 layers70 × 35 mm
Programmer
Cuprum77/PawPad18PawPad programming header
- Size
- 70 × 35 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 9
- Pads
- 50
- Tracks, vias
- 791, 192
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 8 Mar 2023
- Updated
- 9 Mar 2023
Overview
Programmer is an open-source printed circuit board by Cuprum77, from the Cuprum77/PawPad repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 70 × 35 mm with 19 parts on 9 nets, routed with 791 tracks and 192 vias.
It is built around the PM20B05VBDN. Its parts include 5 connectors and 3 capacitors. It belongs with the interfaces and adapters boards of this library.
Main components
1README
Programming Jig/README.mdPawPad Programming Jig
This is an experimental programming jig for PawPad. It still requires real world testing, but continuity tests have proven the design to be sound.
Use case
This jig is meant to fan out the PawPad connector to the common SWD and ICSP connectors. Please do not try to connect them together or plug in other programmers than what you intend to use, as there is no protection circuitry on this!
How to assemble
Soldering the jig is difficult, it is recommended that you order or get more than a single PCB made. That way you can screw them together and use the holes to keep the pogo pins straight.
However, due to the size, it should be noted that they might be hard to solder by hand, and might require some fiddling get it to work.
Future plans
- Add a 3D printable jig to hold the pogo pins in place
- Create a cheaper mounting solution
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | TestPoint | KiCAD Library:TestPoint_Keystone_5019_Minature_No_Silkscreen | TP1, TP2, TP3, TP4, TP5 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | M3 | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H1, H2 |
| 1 | 1 | KiCAD Library:TestPoint_Keystone_5019_Minature_No_Silkscreen | TP6 |
| 1 | 100p | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 2 | KiCAD Library:TestPoint_Keystone_5019_Minature_No_Silkscreen | TP7 |
| 1 | ICSP | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J1 |
| 1 | LOGO | LOGO | G*** |
| 1 | PM20B05VBDN | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J3 |
| 1 | PawPrint | KiCAD Library:pawpad_holeless | J2 |
| 1 | Power | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J5 |
| 1 | RST Capacitor | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | THT variant | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | J4 |
Questions
How big is the Programmer PCB?
It measures 70 × 35 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Programmer use?
19 parts, built around the PM20B05VBDN. 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 Programmer KiCad files?
From the Cuprum77/PawPad repository on GitHub, at the commit this page was made from: the board is Programming Jig/Programmer.kicad_pcb and its schematic Programming Jig/Programmer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Programmer design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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