HardLabs

YetAnotherTNC

solmorth·YetAnotherTNC·pcb/yatnc.kicad_pcb

YetAnotherTNC PCB layout, top view — open source board by solmorth

About the YetAnotherTNC PCB

YetAnotherTNC is an open source PCB design by solmorth, published on GitHub. It is a 2-layer board measuring 55 × 85 mm, with 36 components from 19 distinct parts.

Other key parts include the MAX3232CDR. By type, the board carries 12 capacitors, 10 resistors, 5 connectors, 5 diodes, 2 transistors and 1 IC.

It belongs with the iot & wireless, rf & radio and audio designs in this gallery.

From the project

Modern APRS TNC with Bluetooth and Zigbee connectivity for seamless mobile and IoT integration.

Zephyr firmware (and, eventually, a companion PCB) for a nRF52840 Pro Micro board that turns a phone's Bluetooth connection into a packet radio TNC. Depending on how three GPIO pins are strapped at boot, the board acts as a transparent UART↔BLE bridge, a real AX.25/KISS TNC driving 1200 baud Bell 202 AFSK audio (with optional FX.25 FEC), an AX.25 digipeater, or a standalone GPS APRS tracker that beacons its position with no phone attached.

YetAnotherTNC, from the project README
From the project README

Main components on the YetAnotherTNC

MAX3232CDR

YetAnotherTNC bill of materials (BOM)

36 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MAX3232CDR
IC1
2
BC547
Q1, Q2
1
CONN_02X03_TOP_BOTTOM
Conn_02x03_Top_Bottom
J1
1
DFR0570
J4
2
CONN_01X13_SOCKET
Conn_01x13_Socket
J5, J6
1
CONN_01X04_PIN
Conn_01x04_Pin
J7
1
RST
SW1
1
LPWR
D1
1
1N5822
D2
1
BZW04 18V
D3
1
LPTT
D4
1
1N4148
D5
1
270µF
C1
8
100NF
100nF
C2, C4, C7, C8, C9, C10, C11, C12
2
5.6NF
5.6nF
C3, C5
1
470µF
C6
5
1k
R1, R3, R4, R5, R10
1
1OHM
1ohm
R2
4
10K
10k
R6, R7, R8, R9

YetAnotherTNC design files

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

YetAnotherTNC: common questions

How big is the YetAnotherTNC PCB?

The YetAnotherTNC measures 55 × 85 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the YetAnotherTNC?

36 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the YetAnotherTNC design files?

From the solmorth/YetAnotherTNC repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the YetAnotherTNC design in my own project?

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

Similar boards