HardLabs

Mikoto flashbed

yangxing844·keyboard·mikoto-master/flashbed/mikoto-flashbed.kicad_pcb

Mikoto flashbed PCB layout, top view — open source RP2040/RP2350 board by yangxing844
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About the Mikoto flashbed PCB

Mikoto flashbed is an open source RP2040/RP2350 PCB design by yangxing844, published on GitHub. It is a 2-layer board measuring 54 × 41.5 mm, with 48 components from 11 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. By type, the board carries 20 diodes, 20 resistors, 6 connectors, 1 IC and 1 switch.

It belongs with the keyboards and power & battery designs in this gallery.

From the project

this stores some of my files for keyboards building

nRF52840 microcontroller, in a pro-micro footprint, inspired by the nRFMicro and nice!nano.

See the changelog for the revision history (and compatibility)

1. VDDH power path (5V USB power, and/or 3.7V Li-ion battery) 2. software controllable battery charge current (off, ~100mA, ~250mA, ~350mA) 3. ESD protection on USB lines, and 500mA fuse protection for VBUS and EXT5V 4. "Bidirectional" power over EXT5V

Mikoto flashbed, from the project README
From the project README

Main components on the Mikoto flashbed

RP2040

Mikoto flashbed bill of materials (BOM)

48 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040
mikoto-pins
U1
1
TYPE-C-31-M-13C
Conn_01x01
J1
1
ST-0277D00-052-142
Conn_01x01
J2
3
Conn_01x01
J3, J4, J5
1
Conn_01x05
J7
1
C5156480
TVBP06
SW1
1
1N4148WT
LED_Small
D1
19
LED_Small
D2, D3, D4, D5, D6, D7, D8, D9 +11
2
5.1K
2.2k
R1, R2
17
2.2k
R3, R4, R5, R6, R8, R9, R10, R11 +9
1
10K
2.2k
R7

Mikoto flashbed design files

The KiCad project lives in the yangxing844/keyboard repository on GitHub; these links point at the commit this page was built from.

Mikoto flashbed: common questions

What microcontroller does the Mikoto flashbed use?

The Mikoto flashbed is built around the RP2040, from the RP2040/RP2350 family.

How big is the Mikoto flashbed PCB?

The Mikoto flashbed measures 54 × 41.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mikoto flashbed?

48 components, from 11 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Mikoto flashbed design files?

From the yangxing844/keyboard repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Mikoto flashbed design in my own project?

The repository has no license, so all rights stay with yangxing844. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Mikoto flashbed without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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