HardLabs

Daughter

ept221·pet-on-a-chip·pcb/daughter/daughter.kicad_pcb

Daughter PCB layout, top view — open source board by ept221

About the Daughter PCB

Daughter is an open source PCB design by ept221, published on GitHub under the MIT license. It is a 2-layer board measuring 76.2 × 38.1 mm, with 42 components from 22 distinct parts.

Other key parts include the TB6612FNG, LDL1117S50R, MAX4466 and LMV7219M5. By type, the board carries 12 capacitors, 11 resistors, 5 diodes, 4 ICs, 4 connectors and 3 switches.

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

From the project

Senior Design

To upload the configuration bitstream for the previously assembled program, run:

You will now be able to interact with a basic shell over the UART at 115200 baud. Additionally, the output will also be sent over the VGA interface.

There are a variety of memory mapped peripherals included in the system. The memory map is configured in soc/src/dramandio/dramandio.v. Currently addresses 0x0000 to 0x07FF are mapped to data ram. The peripherals are mapped from 0x1000 to 0x10FF. The instructions in and out are designed to allow for quickly and easily reading and writing to peripherals within this…

Daughter, from the project README
From the project README

Main components on the Daughter

TB6612FNGLDL1117S50RMAX4466LMV7219M5

Daughter bill of materials (BOM)

42 components, 22 distinct parts.

QtyPartRefs
1
TB6612FNG
U1
1
LDL1117S50R
U2
1
MAX4466
U3
1
LMV7219M5
U4
2
Conn_02x15_Odd_Even
J1, J2
1
Conn_01x03_Male
J3
1
Screw_Terminal_01x14
J4
2
100k
Gain1, Threshold1
1
Microphone
MK1
3
SW_Push
SW1, SW2, SW3
5
LED
D1, D2, D3, D4, D5
5
0.1uF
C1, C5, C6, C8, C11
1
4.7uF
C2
2
470uF
C3, C4
1
0.01uF
C7
2
10uF
C9, C12
1
100pF
C10
2
2k
R1, R2
2
1M
R3, R4
1
1k
R5
Show 2 more
QtyPartRefs
1
22k
R6
5
10k
R7, R8, R9, R10, R11

Daughter design files

The KiCad project lives in the ept221/pet-on-a-chip repository on GitHub; these links point at the commit this page was built from.

Daughter: common questions

How big is the Daughter PCB?

The Daughter measures 76.2 × 38.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Daughter?

42 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Daughter design files?

From the ept221/pet-on-a-chip repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Daughter design in my own project?

Yes, under the terms of its MIT license, which ept221 chose for the repository.

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