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TeensyRPR

RobustRobby·RPR-TNC

TeensyRPR PCB layout, top view — open source NXP board by RobustRobby
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About the TeensyRPR PCB

TeensyRPR is an open source NXP PCB design by RobustRobby, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 48 × 59.5 mm, with 58 components from 32 distinct parts.

Its main chip is the AP2120N-1.8TRG1, from the NXP family. Other key parts include the L70-R, SGTL5000XNLA3 and TPS54202DDC. By type, the board carries 22 capacitors, 20 resistors, 7 diodes, 4 ICs, 3 inductors and 2 transistors.

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

From the project

1. Introduction The first design of a Teensy-based TNC as a replacement for the SCS Tracker was conceived by Peter Mack and Hans-Peter Helfert, DL6MAA, of SCS. It was based on a stack of a Teensy 4.0 board on top of an audio shield, which was itself on top of a piece of generic P

1. Introduction The first design of a Teensy-based TNC as a replacement for the SCS Tracker was conceived by Peter Mack and Hans-Peter Helfert, DL6MAA, of SCS. It was based on a stack of a Teensy 4.0 board on top of an audio shield, which was itself on top of a piece of generic PCB for holding some components like a PTT transistor and some LEDs. Soon however, the stack of three PCBs was found to be sub-optimal and the idea of designing a custom PCB came into existence. Peter designed a first version of such a custom PCB, but lacked the time to finish it.

Main components on the TeensyRPR

L70-RAP2120N-1.8TRG1SGTL5000XNLA3TPS54202DDC

TeensyRPR bill of materials (BOM)

58 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
L70-R
U1
1
AP2120N-1.8TRG1
U2
1
SGTL5000XNLA3
U3
1
TPS54202DDC
U6
2
2N7002
Q1, Q2
3
C8598
D_Schottky
D1, D6, D9
2
TVS_5V
TVS_5v
D7, D8
2
1N4148WS
D10, D11
1
C295109
470µ
L1
1
15UH
15uH
L2
1
56NH
56nH
L3
1
470UF
470uF
C1
7
100N
100n
C2, C5, C6, C8, C16, C18, C19
3
C50254
2µ2
C4, C7, C9
1
150N
150n
C10
2
C28323
1µ
C11, C12
3
10N
10n
C13, C23, C24
2
C15850
10µ
C15, C17
2
C2992620
22µ
C20, C21
1
75PF
75pF
C22
Show 12 more
QtyPartRefs
2
4K7
4k7
R1, R21
2
100
R2, R19
2
2K2
2k2
R3, R4
5
1k
R5, R7, R9, R11, R20
1
330
R6
2
10K
10k
R8, R10
1
511K
511k
R12
1
105K
105k
R13
1
49.9
R14
1
100K
100k
R15
1
13.3K
13.3k
R16
1
10
R18

TeensyRPR design files

The KiCad project lives in the RobustRobby/RPR-TNC repository on GitHub; these links point at the commit this page was built from.

TeensyRPR: common questions

What microcontroller does the TeensyRPR use?

The TeensyRPR is built around the AP2120N-1.8TRG1, from the NXP family.

How big is the TeensyRPR PCB?

The TeensyRPR measures 48 × 59.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TeensyRPR?

58 components, from 32 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 TeensyRPR design files?

From the RobustRobby/RPR-TNC 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 TeensyRPR design in my own project?

Yes, under the terms of its GPL-3.0 license, which RobustRobby chose for the repository.

Can I test firmware for the TeensyRPR without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.

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