HardLabs

SpeedRadar

jwchang418·SpeedRadar·Circuit Board/speed radar.kicad_pcb

SpeedRadar PCB layout, top view — open source AVR/Arduino board by jwchang418

About the SpeedRadar PCB

SpeedRadar is an open source AVR/Arduino PCB design by jwchang418, published on GitHub. It is a 2-layer board measuring 47 × 40 mm, with 34 components from 19 distinct parts.

Its main chip is the ATmega328P-PU, from the AVR/Arduino family. Other key parts include the LM358 and L78L05_TO92. By type, the board carries 14 capacitors, 9 resistors, 4 connectors, 3 ICs, 1 crystal and 1 diode.

It belongs with the sensors designs in this gallery.

From the project

This project is designed by Jun-Wei Chang for a simple speed radar by using a few of electronic components.

SpeedRadar, from the project README
From the project README

Main components on the SpeedRadar

LM358ATmega328P-PUL78L05_TO92

SpeedRadar bill of materials (BOM)

34 components, 19 distinct parts.

QtyPartRefs
1
LM358
U1
1
ATmega328P-PU
U2
1
L78L05_TO92
U3
1
16Mhz
Y1
2
Conn_01x03
J1, J2
1
Conn_01x04
J3
1
Conn_01x03
J4
1
Conn_01x02
DC_in1
1
HB100-KiCAD-rescue
HB1
1
LED
D1
3
10uF
C1, C10, C12
7
0.1uF
C2, C3, C4, C6, C8, C9, C11
2
1uF
C5, C7
2
10pF
C13, C14
4
100k
R1, R2, R5, R6
2
10K
R3, R7
1
1M
R4
1
100M
R8
1
1K
R9

SpeedRadar design files

The KiCad project lives in the jwchang418/SpeedRadar repository on GitHub; these links point at the commit this page was built from.

SpeedRadar: common questions

What microcontroller does the SpeedRadar use?

The SpeedRadar is built around the ATmega328P-PU, from the AVR/Arduino family.

How big is the SpeedRadar PCB?

The SpeedRadar measures 47 × 40 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SpeedRadar?

34 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the SpeedRadar design files?

From the jwchang418/SpeedRadar repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the SpeedRadar design in my own project?

The repository has no license, so all rights stay with jwchang418. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the SpeedRadar 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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