Nfcwchsao
About the Nfcwchsao PCB
Nfcwchsao is an open source RISC-V PCB design by gsteiert, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 34.3 × 48.3 mm, with 10 components from 9 distinct parts.
Its main chip is the CH32V003J4M6, from the RISC-V family. Other key parts include the NT3H2211W0FT1X. By type, the board carries 3 resistors, 2 ICs, 2 capacitors, 1 connector, 1 speaker and 1 diode.
It belongs with the wearables designs in this gallery.
From the project
Beeping Blinking Badge Buddy
This board has an engergy harvesting NFC EEPROM and WCH CH32V003 MCU. The MCU is connected to an RGB LED and piezo buzzer. The two ICs are 8 pin SOIC, and the passives are 0603 so it is not too dificult to hand assemble, except for the RGB LED that is a little fine pitch, but the pads are extended and the close pins are shorted together anyway so it is not too difficult.
Main components on the Nfcwchsao
Nfcwchsao bill of materials (BOM)
10 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NT3H2211W0FT1X NT3H2211 | SO-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | CH32V003J4M6 CH32V003F4P6 | SOP-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Staggered | J1 |
| 1 | PKLCS1212E20A0-R1 Speaker_Crystal | Buzzer_Murata_PKLCS1212E_handy | LS1 |
| 1 | HSMG-C110 Green | LED_Right_Angle_3x2x1mm | D1 |
| 1 | CL10A475KP8NNNC 4.7uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1 |
| 1 | DNP | C_0603_1608Metric | C2 |
| 1 | RC0603FR-073K3L 3.3k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 2 | RC0603FR-0710KL 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5 |
Nfcwchsao design files
The KiCad project lives in the gsteiert/nfcwchsao repository on GitHub; these links point at the commit this page was built from.
- Layoutbrd/nfcwchsao.kicad_pcb
- Schematicbrd/nfcwchsao.kicad_sch
Nfcwchsao: common questions
What microcontroller does the Nfcwchsao use?
The Nfcwchsao is built around the CH32V003J4M6, from the RISC-V family.
How big is the Nfcwchsao PCB?
The Nfcwchsao measures 34.3 × 48.3 mm, has 2 copper layers and is 0.1916 mm thick.
How many components are on the Nfcwchsao?
10 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the Nfcwchsao design files?
From the gsteiert/nfcwchsao repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Nfcwchsao design in my own project?
Yes, under the terms of its CC0-1.0 license, which gsteiert chose for the repository.
Can I test firmware for the Nfcwchsao without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RISC-V firmware against it before you order a PCB.
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