HardLabs

Board v2.1 fab

gizatt·fallsdownlots·board_v2/board_v2/board_v2.1_fab.kicad_pcb

Board v2.1 fab layout, top view — open source board by gizatt

About the Board v2.1 fab

Board v2.1 fab is an open source PCB design by gizatt, published on GitHub. It is a 2-layer board measuring 55 × 61.5 mm, with 35 components from 19 distinct parts.

Other key parts include the LD33V, MPU-6050-BREAKOUT, DRV8313PWP and ADAFRUIT_FEATHER_M0_EXPRESS. By type, the board carries 13 capacitors, 10 resistors, 5 connectors, 4 ICs, 1 module and 1 switch.

It belongs with the robotics & motion, iot & wireless and power & battery designs in this gallery.

From the project

For ease of control tuning, I chose a main board with Bluetooth Low-Energy (BLE) support, and written a companion program that connects to the robot and allows parameter updates. This program is currently very primitive but it beats reprogramming or having it drag around a serial

For ease of control tuning, I chose a main board with Bluetooth Low-Energy (BLE) support, and written a companion program that connects to the robot and allows parameter updates. This program is currently very primitive but it beats reprogramming or having it drag around a serial cable (which interferes with control).

I mostly rely on SimpleFOC for the actual FOC implementation, and took their advice on sensor and drive chip choice. I'd like to dive deeper into controlling these motors better -- for example, trying to compensate for cogging torque to get smoother operation - but I have more…

Board v2.1 fab, from the project README
From the project README

Main components on the Board v2.1 fab

LD33VMPU-6050-BREAKOUTDRV8313PWPADAFRUIT_FEATHER_M0_EXPRESS

Board v2.1 fab bill of materials (BOM)

35 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LD33V
U1
1
MPU-6050-BREAKOUT
MPU-6050-Breakout
U2
2
DRV8313PWP
U3, U5
1
ADAFRUIT_FEATHER_M0_EXPRESS
Adafruit_Feather_M0_Express
A1
1
Battery
J1
1
MOTR_SENS
J2
1
MOTL_SENS
J3
1
MOTL
J4
1
MOTR
J6
1
SW_SPDT
SW1
1
DSchottky
D1
2
.01uF
C1, C7
7
.1uF
C2, C3, C4, C8, C9, C10, C13
2
.47uF
C5, C11
2
10UF
10uF
C6, C12
2
R1K
R1, R2
1
1M
R3
1
470K
R4
6
R10K
R5, R6, R7, R8, R9, R10

Board v2.1 fab design files

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

Board v2.1 fab: common questions

How big is the Board v2.1 fab?

The Board v2.1 fab measures 55 × 61.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Board v2.1 fab?

35 components, from 19 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 Board v2.1 fab design files?

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

Can I use the Board v2.1 fab design in my own project?

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

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