HardLabs

Fish mouse

lowj·fish-mouse·pcb_files/mouse/mouse_v2.kicad_pcb

Fish mouse PCB layout, top view — open source NXP board by lowj

About the Fish mouse PCB

Fish mouse is an open source NXP PCB design by lowj, published on GitHub. It is a 2-layer board measuring 94.8 × 94.8 mm, with 70 components from 29 distinct parts.

Its main chip is the Teensy3.2, from the NXP family. Other key parts include the SN754410NE, LM1084-5.0 and Encoder_3081. By type, the board carries 21 resistors, 12 diodes, 12 capacitors, 5 ICs, 4 transistors and 4 connectors.

It belongs with the robotics & motion designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

Small Robot for maze navigation (Micromouse)

Issues to fix 1. Switche footprint needs bigger drill holes. 1. Add switch to choose USBC GND or Batt GND.(Currently switch toggles between USB 5V and Regulator 5V, but GND stays the same). It will be safer if GNDs can be disconnected when not in use. 1. Fix footprint of USBC, add drill holes for excess pins, but do not include metal surrounding. Extend smd pads. 1. On USBC footprint, one of THT pads is off. 1. Put i2c pullups on other side of pcb 1. led to show when there is usb power 1. probally more issues yet to be found...

Fish mouse, from the project README
From the project README

Main components on the Fish mouse

Teensy3.2SN754410NELM1084-5.0Encoder_3081

Fish mouse bill of materials (BOM)

70 components, 29 distinct parts.

QtyPartRefs
1
Teensy3.2
U1
1
SN754410NE
U2
1
LM1084-5.0
U3
2
Encoder_3081
U4, U5
2
Motor_DC
M1, M2
1
CASTER_BALL
M3
4
Q_Photo_NPN
Q0, Q1, Q2, Q3
1
USB_C_Receptacle
J1
1
BT_Conn
J2
1
Conn_01x04_Female
J3
1
I2C_Conn
J4
1
Battery_Cell
BT1
1
Buzzer
BZ1
1
EG1218
S1
2
TL3315NF160Q
SW1, SW2
4
Q_NMOS_DGS
T0, T1, T2, T3
4
IRL81A
D0, D1, D2, D3
8
WS2812B
D4, D5, D6, D7, D8, D9, D10, D11
9
0.1uF
C1, C2, C4, C5, C6, C7, C8, C11 +1
1
1.0uF
C3
Show 9 more
QtyPartRefs
1
10uF
C9
1
10uF(Tantalum)
C10
4
R
R1, R2, R3, R4
4
33
R5, R6, R7, R8
4
1k
R9, R10, R11, R12
4
47k
R13, R14, R15, R16
2
R_PULL_UP
R17, R19
2
4.7k
R18, R21
1
R_BZ
R20

Fish mouse design files

The KiCad project lives in the lowj/fish-mouse repository on GitHub; these links point at the commit this page was built from.

Fish mouse: common questions

What microcontroller does the Fish mouse use?

The Fish mouse is built around the Teensy3.2, from the NXP family.

How big is the Fish mouse PCB?

The Fish mouse measures 94.8 × 94.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fish mouse?

70 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Fish mouse design files?

From the lowj/fish-mouse repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Fish mouse design in my own project?

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

Can I test firmware for the Fish mouse without the hardware?

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

Earlier revisions in the repo: mouse

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