HardLabs

Aircon control

lbrushmanl·car-aircon-controller·hardware/aircon-control/aircon-control.kicad_pcb

Aircon control PCB layout, top view — open source AVR/Arduino board by lbrushmanl

About the Aircon control PCB

Aircon control is an open source AVR/Arduino PCB design by lbrushmanl, published on GitHub. It is a 2-layer board measuring 58 × 46 mm, with 71 components from 36 distinct parts.

Its main chip is the ATmega88PA-A, from the AVR/Arduino family. Other key parts include the TPS562200, Opamp_Dual, LM35-LP, ULN2003A and CAT6219-330. By type, the board carries 29 resistors, 21 capacitors, 7 ICs, 6 connectors, 4 diodes and 2 switches.

Main components on the Aircon control

ATmega88PA-ATPS562200Opamp_DualLM35-LPULN2003ACAT6219-330

Aircon control bill of materials (BOM)

71 components, 36 distinct parts.

QtyPartRefs
1
ATmega88PA-A
U1
1
TPS562200
U2
2
Opamp_Dual
U3, U6
1
LM35-LP
U4
1
ULN2003A
U5
1
CAT6219-330
U7
1
Setpoint Connector
J1
1
OLED Conn
J2
1
Conn_01x06_Pin
J3
1
Uart Conn
J4
1
Interface Conn
J6
1
Conn_01x02_Pin
J7
1
10k
RV1
2
Set
SW1, SW2
4
LED
D1, D2, D3, D4
1
4u7
L1
9
100n
C1, C2, C3, C8, C11, C13, C17, C20 +1
1
22u
C4
1
10u
C5
1
100n
C6
Show 16 more
QtyPartRefs
1
22u
C7
4
10p
C9, C10, C14, C15
1
1u
C12
2
100nF
C16, C18
1
10n
C19
2
10
R1, R18
6
10k
R2, R3, R4, R24, R25, R28
2
R
R5, R6
8
33
R7, R8, R12, R13, R14, R15, R19, R20
3
1k
R9, R27, R29
2
4k7
R10, R11
1
R
R16
1
R
R17
2
1
R21, R22
1
33
R23
1
10k
R26

Aircon control design files

The KiCad project lives in the lbrushmanl/car-aircon-controller repository on GitHub; these links point at the commit this page was built from.

Aircon control: common questions

What microcontroller does the Aircon control use?

The Aircon control is built around the ATmega88PA-A, from the AVR/Arduino family.

How big is the Aircon control PCB?

The Aircon control measures 58 × 46 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Aircon control?

71 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the Aircon control design files?

From the lbrushmanl/car-aircon-controller repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Aircon control design in my own project?

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

Can I test firmware for the Aircon control 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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