HardLabs

Lr hudiy rpi hat

sedlons·lr-hudiy-rpi-hat·pcb_hat/lr-openauto-hat.kicad_pcb

Lr hudiy rpi hat layout, top view — open source AVR/Arduino board by sedlons

About the Lr hudiy rpi hat

Lr hudiy rpi hat is an open source AVR/Arduino PCB design by sedlons, published on GitHub. It is a 2-layer board measuring 87.4 × 56 mm, with 90 components from 29 distinct parts.

Its main chip is the Arduino_Nano_v2.x, from the AVR/Arduino family. By type, the board carries 39 resistors, 13 diodes, 12 connectors, 11 capacitors, 10 transistors and 4 fuses.

It belongs with the dev boards & breakouts and sensors designs in this gallery.

From the project

Land Rover Discovery II dash rpi hat

Functions: - self power control with latch-up - steering wheel resistance button read - power control of RPi - rotary encoder (volume) - light sensor (control backlight/da/night mode) - heater power on by timing with RTC (NOT IMPLEMENTED IN HUDIY YET) - webasto RX/TX interface (NOT TESTED YET) - connector for I2C gyroscope for inclinometer (NOT IMPLEMENTED IN HUDIY YET)

Lr hudiy rpi hat, from the project README
From the project README

Main components on the Lr hudiy rpi hat

Arduino_Nano_v2.x

Lr hudiy rpi hat bill of materials (BOM)

90 components, 29 distinct parts.

QtyPartRefs
1
Arduino_Nano_v2.x
A1
4
MMBF170
Q1, Q3, Q4, Q9
1
AO4407A
Q2
3
YJL3407A
Q5, Q6, Q10
1
BC856
Q7
1
BC846
Q8
3
Conn_01x05_Male
J1, J3, J10
2
Conn_01x04_Male
J2, J11
4
Conn_01x02_Male
J4, J6, J8, J9
1
Conn_01x05_Male
J5
1
Conn_01x07_Male
J7
1
Conn_02x20_Odd_Even
P1
3
Polyfuse
F1, F2, F4
1
4.7K
F3
1
1N4002
D1
3
BAT54C
D2, D3, D6
8
BAT54S
D4, D5, D7, D8, D10, D11, D12, D13
1
3V6
D9
5
10n
C1, C4, C7, C8, C12
1
10u/16V
C3
Show 9 more
QtyPartRefs
5
220n
C5, C6, C9, C10, C11
15
100k
R1, R4, R11, R14, R16, R19, R21, R23 +7
2
1k
R2, R31
9
330
R3, R6, R10, R12, R13, R18, R20, R22 +1
4
1M
R5, R15, R17, R39
2
4.7K
R7, R9
5
10k
R8, R28, R29, R30, R32
1
5k6
R33
1
0R
R36

Lr hudiy rpi hat design files

The KiCad project lives in the sedlons/lr-hudiy-rpi-hat repository on GitHub; these links point at the commit this page was built from.

Lr hudiy rpi hat: common questions

What microcontroller does the Lr hudiy rpi hat use?

The Lr hudiy rpi hat is built around the Arduino_Nano_v2.x, from the AVR/Arduino family.

How big is the Lr hudiy rpi hat?

The Lr hudiy rpi hat measures 87.4 × 56 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Lr hudiy rpi hat?

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

Where can I download the Lr hudiy rpi hat design files?

From the sedlons/lr-hudiy-rpi-hat repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Lr hudiy rpi hat design in my own project?

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

Can I test firmware for the Lr hudiy rpi hat without the hardware?

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

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