HardLabs

Doorbot

makeitlabs·doorbot·hardware/pi_hat/REV0/doorbot/doorbot.kicad_pcb

Doorbot PCB layout, top view — open source AVR/Arduino board by makeitlabs

About the Doorbot PCB

Doorbot is an open source AVR/Arduino PCB design by makeitlabs, published on GitHub. It is a 2-layer board measuring 65 × 56.5 mm, with 75 components from 30 distinct parts.

Its main chip is the ATmega328P-AU, from the AVR/Arduino family. Other key parts include the TLP291, DRV103, MC78L05_SOT89 and DC_BOOST_MODULE. By type, the board carries 34 resistors, 13 capacitors, 10 ICs, 5 connectors, 5 diodes and 3 LEDs.

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

From the project

Doorbot is an RFID access control platform, primarily intended for exterior doors in a makerspace environment. Based on Raspberry Pi 3b+, PoE hat, and a custom interface hat.

- pihat - Access control hat that sandwiches between a Raspberry Pi 3b+ and a Raspberry Pi PoE hat. It provides isolated Wiegand RFID reader translation as well as isolated PWM solenoid control. - i2clcd - Presently incomplete project for an I2C add-on display for the Doorbot Pi hat.

Doorbot, from the project README
From the project README

Main components on the Doorbot

ATmega328P-AUTLP291DRV103MC78L05_SOT89DC_BOOST_MODULE

Doorbot bill of materials (BOM)

75 components, 30 distinct parts.

QtyPartRefs
1
ATmega328P-AU
U1
7
TLP291
U2, U3, U4, U5, U6, U9, U10
1
DRV103
U7
1
MC78L05_SOT89
U8
1
DC_BOOST_MODULE
MOD1
1
2N7002
Q1
1
16MHz
Y1
1
Raspberry_Pi_2_3
J1
1
Screw_Terminal_01x12
J2
1
PoE Passthrough
J3
2
Conn_01x04
J4, J5
1
1.5A PTC
F1
1
100K
RV1
3
LED
LED1, LED2, LED3
1
B260
D1
4
BAT54S
D5, D6, D7, D8
1
C_DELAY
C1
3
1uF
C2, C9, C11
7
.1uF
C3, C4, C5, C6, C10, C12, C13
2
12pF
C7, C8
Show 10 more
QtyPartRefs
4
1K
R1, R2, R8, R31
1
2K
R3
9
47
R4, R6, R19, R20, R21, R22, R23, R27 +1
9
4.7K
R5, R7, R10, R11, R12, R15, R32, R33 +1
1
R_LED
R9
1
R_PWM
R13
1
R_FREQ
R14
6
100
R16, R17, R25, R26, R29, R30
1
470
R18
1
0
R24

Doorbot design files

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

Doorbot: common questions

What microcontroller does the Doorbot use?

The Doorbot is built around the ATmega328P-AU, from the AVR/Arduino family.

How big is the Doorbot PCB?

The Doorbot measures 65 × 56.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Doorbot?

75 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Doorbot design files?

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

Can I use the Doorbot design in my own project?

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

Can I test firmware for the Doorbot 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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