While working on the badge design for MakeZurich 2018, I had the need to first make a breakout for the NINA-W102 we got from u-blox to see what is possible, do some tryouts with different components like the display and start developing drivers and firmware.
This is the outcome of it and as we did go on with the badge design, we switched from having a single-board badge to a modular badge where the modules can be reused standalone in a project. On the final badge design you can reuse the display and the NINA-W102 module in your hacks, and with a little bit of desoldering you can reuse the sensor module (from Sensirion) as well.
Key Features
- Really minimal development board — no LDO on board, power it with 3V3
- Serial programmer header matching a standard FTDI adapter — usable solderless
VCC_IOis by default bridged (3V3 IO levels), but the jumper can be cut for different voltages- Reset and boot buttons connected to the corresponding pins of the NINA
- Power LED connected directly to VCC (can be safely left unpopulated)
- Single-sided PCB layout with 1206-size components and extra long pads for easy hand-soldering
- All headers have a shifted look — allows centering for easy soldering without the breadboard trick
Pinout
Made by gnz.io.
Schematics
BOM
| Ref | Qty | Value | Price |
|---|---|---|---|
| C1, C2 | 2 | 100nF | ~CHF 0.09 |
| C3, C4 | 2 | 1uF | ~CHF 0.12 |
| D1 | 1 | GREEN LED | ~CHF 0.16 |
| J1, J2 | 2 | Conn_01x15 | ~CHF 0.35 |
| R1 | 1 | 1kΩ | ~CHF 0.03 |
| R2, R3 | 2 | 10kΩ | ~CHF 0.01 |
| SW1, SW2 | 2 | Button | ~CHF 0.28 |
| U1 | 1 | NINA-W102 | CHF 8.– ~ CHF 20.– |
Sources
KiCAD schematic and PCB design sources are available on GitHub.
Team Contributions
Thanks to: Benjamin Marty, Dirk Zugenmaier, Gonzalo Casas, Matthias Schibli, Michael Ammann, Oliver Walkhoff, Tillo Bosshart, and Urs Marti.