HardLabs

Bbesc

jakeread·tesc·Circuit/bbesc_kiCad.kicad_pcb

Bbesc PCB layout, top view — open source NXP board by jakeread

About the Bbesc PCB

Bbesc is an open source NXP PCB design by jakeread, published on GitHub. It is a 2-layer board measuring 81.4 × 63.5 mm, with 75 components from 35 distinct parts.

Its main chip is the teensy_3-2, from the NXP family. Other key parts include the DRV_8302. By type, the board carries 31 capacitors, 28 resistors, 6 transistors, 3 connectors, 2 ICs and 2 jumpers.

It belongs with the robotics & motion designs in this gallery.

From the project

in-progress motor controller, towards accessible closed-loop control

FOCT implements 'all the bells and whistles' found in high-end robotics motor controllers (encoder feedback, BEMF & current sensing, etc) in a relatively low-cost solution. Code is written in Arduino for the Teensy Microcontroller, and is meant to be easily extensible and pick-through-able.

FOCT is in development! So is it's documentation!

Up to ~24v supply Up to 30A without a heatsink, 42 with good cooling, peaks of 60 Planned PWM in, SPI slave modes for control. Serial over USB Config / testing.

Bbesc, from the project README
From the project README

Main components on the Bbesc

teensy_3-2DRV_8302

Bbesc bill of materials (BOM)

75 components, 35 distinct parts.

QtyPartRefs
1
teensy_3-2
U2
1
DRV_8302
U3
6
Q_NMOS_GDS
Q1, Q2, Q3, Q4, Q5, Q6
1
CONN_01X06
J1
1
CONN_01X02
J3
1
CONN_01X03
P2
1
JUMPER
JP1
1
JUMPER3
JP3
1
DIODESCH
D1
1
TVS 5v
D2
1
22uH
L1
11
10uF
C2, C3, C13, C14, C16, C26, C27, C28 +3
5
2.2uF
C4, C5, C7, C8, C10
1
120pF
C6
1
6.8nF
C9
1
22nF
C11
1
1uF
C12
1
15uF
C15
1
100nF
C17
3
220nF
C18, C19, C20
Show 15 more
QtyPartRefs
2
2.2nF
C21, C22
2
2000uF
C23, C25
2
100uF
C24, C32
1
47R
R2
1
18k
R3
3
3k3
R4, R6, R7
2
10k
R5, R17
1
15k
R8
1
220k
R9
1
1M
R10
4
100R
R11, R12, R13, R14
6
4R7
R15, R16, R21, R22, R27, R28
2
SHNT
R18, R24
3
39K
R19, R25, R30
3
5K6
R20, R26, R31

Bbesc design files

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

Bbesc: common questions

What microcontroller does the Bbesc use?

The Bbesc is built around the teensy_3-2, from the NXP family.

How big is the Bbesc PCB?

The Bbesc measures 81.4 × 63.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bbesc?

75 components, from 35 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bbesc design files?

From the jakeread/tesc repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Bbesc design in my own project?

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

Can I test firmware for the Bbesc 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.

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