HardLabs

ATS-20

Emmemad·ATS-20_Schematic·ATS-20+/ATS-20_Plus_Trace/ATS-20_Plus_Trace.kicad_sch

ATS-20

About the ATS-20 PCB

ATS-20 is an open source AVR/Arduino PCB design by Emmemad, published on GitHub. It is a board, with 80 components from 31 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the TP4056, CL9901A33L3M, Si4732-A10, BP76108 and TDA1308. By type, the board carries 27 capacitors, 18 resistors, 10 connectors, 7 ICs, 3 inductors and 2 switches.

It belongs with the rf & radio designs in this gallery.

From the project

ATS-20 radio schematic

The schematic was traced back from original PCB by TB5CVN published here and should correspond to products sold as "ATS-20" and to some Si4735/Si4732 DIY radio PCB kits.

Values of resistors and some other information was taken from PCB photos by Robert Richmond available here

Schematic is available as a KiCAD 6.0 project and also in PDF.

Pictures folder contains original and upscaled versions of PCB layout pictures and also other board and unit photos

Main components on the ATS-20

TP4056CL9901A33L3MSi4732-A10BP76108TDA1308MD8002Arduino_Nano_v3.x

ATS-20 bill of materials (BOM)

80 components, 31 distinct parts.

QtyPartRefs
1
TP4056
U1
2
CL9901A33L3M
U2, U3
1
Si4732-A10
U4
1
BP76108
U5
1
TDA1308
U6
1
MD8002
U7
1
Arduino_Nano_v3.x
A1
1
32.768 kHz
Y1
1
USB_C_Receptacle_USB2.0
J1
1
Conn_01x01_Male
J2
1
Conn_01x14
J3
2
Conn_01x02_Male
J4, J7
1
Conn_Coaxial
J5
1
AudioJack3_SwitchTR
J6
2
Conn_01x04_Male
J8, J9
1
Conn_01x05
J10
8
SW_Push
B1, B2, B3, B4, B5, B6, B7, B8
1
RotaryEncoder_Switch
ENC1
2
SW_SPDT
SW1, SW2
2
LED
LED1, LED2
Show 11 more
QtyPartRefs
3
L
L1, L2, L3
27
C
C1, C2, C3, C4, C5, C6, C7, C8 +19
2
1R
R1, R2
1
300R
R3
1
1k
R4
2
2.2k
R5, R6
7
10k
R7, R8, R11, R12, R16, R17, R18
2
4.7k
R9, R10
1
21k
R13
1
68k
R14
1
DNP
R15

ATS-20 design files

The KiCad project lives in the Emmemad/ATS-20_Schematic repository on GitHub; these links point at the commit this page was built from.

ATS-20: common questions

What microcontroller does the ATS-20 use?

The ATS-20 is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How many components are on the ATS-20?

80 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the ATS-20 design files?

From the Emmemad/ATS-20_Schematic repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the ATS-20 design in my own project?

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

Can I test firmware for the ATS-20 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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