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Transponder-11.9.1

peterantypas·maiana·latest/CAD/Board-11.9/transponder-11.9.1/transponder-11.9.1.kicad_pcb

Transponder-11.9.1 PCB layout, top view — open source STM32 board by peterantypas

About the Transponder-11.9.1 PCB

Transponder-11.9.1 is an open source STM32 PCB design by peterantypas, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 84 × 25 mm, with 109 components from 85 distinct parts.

Its main chip is the STM32L432KBUx, from the STM32 family. Other key parts include the LDFPVR, AP3211KTR-G1, L76-M33, BGA2800,115 and DMN63D8LDW-7. By type, the board carries 35 capacitors, 19 test points, 17 resistors, 14 inductors, 11 ICs and 3 transistors.

From the project

MAIANA™ is the first Open Source AIS transponder. It proudly raises an extra long middle finger to the marine electronics industry, government overregulation and everything else that gets in the way of innovation in this space.

This directory contains Eagle CAD files as well as schematic PDFs and Gerber exports for board fabrication.

The board stackup is good enough for either OSH Park 4-layer, or JLCPCB 4-layer with controlled impedance (JLC2313).

Revision 11.5.2 does away with the (hard to source) regulator from ST and replaces it with a Zener + NPN combination that delivers about 8.5V to the PA under load.

Main components on the Transponder-11.9.1

LDFPVRAP3211KTR-G1L76-M33BGA2800,115DMN63D8LDW-7STM32L432KBUxAP3211KAFT05MS003NT1SKY13330-397LFD3V3X8U9LP38101575AT43A0040E

Transponder-11.9.1 bill of materials (BOM)

109 components, 85 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LDFPVR
IC1
1
AP3211KTR-G1
Si4460
U1
1
L76-M33
Si4460
U2
1
BGA2800,115
U3
1
DMN63D8LDW-7
L76L-M33
U4
1
STM32L432KBUx
U5
1
AP3211K
U6
1
AFT05MS003NT1
24LC01BT/OT
U7
1
SKY13330-397LF
U8
1
D3V3X8U9LP3810
SI1926DL-T1-E3
U9
1
1575AT43A0040E
SI1926DL-T1-E3
U10
1
DMP3099L-7
AFT05MS004NT1
Q1
2
AO3401A
Q2, Q7
2
ECS-300-10-33B-CKM-TR
Y1, Y2
1
RJ45
J1
1
Conn_01x05
J2
1
CON-SMA-EDGE-S
J3
1
1575AT43A0040E
AE1
1
D3V3X8U9LP3810-7
CR1
1
~
TP1
Show 65 more
QtyPartRefs
18
~
TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9 +10
1
BZT52C3V6T-7
BAT54WS
D1
1
SMBJ16CA-13-F
BAT54WS
D3
1
250MA/100V
BAT54WS
D4
1
47NH
270nH
L1
1
4.7UH
270nH
L2
1
36NH
10nH
L3
1
2.2UH
2.2uH
L4
1
470NH
13nH
L5
1
130NH
39nH
L6
1
100NH
20nH
L7
1
270NH
470nH
L8
1
18NH
470nH
L9
1
22NH
47nH
L10
1
56NH
68nH
L11
1
4.7UH
4.7uH
L12
1
270NH
4.7uH
L13
1
10NH
5.6nH
L14
1
10UF
2.2nF
C1
2
22NF
2.2nF
C2, C16
1
2.2UF
22nF
C3
1
3.3pF
C4
1
22NF
3.3pF
C5
1
22UF
91pF
C6
1
470PF
2.2uF
C7
1
91PF
91pF
C8
1
3.3PF
22nF
C9
1
3.3PF
2.2uF
C10
1
22NF
22nF
C11
1
2.2NF
91pF
C12
1
22NF
470pF
C13
1
22NF
110pF
C14
1
91PF
36pF
C15
1
91PF
110pF
C17
1
2.2NF
2.2nF
C18
3
22nF
C19, C27, C31
1
470pF
C20
1
470PF
20pF
C21
1
20PF
16pF
C22
1
16PF
2.2uF
C23
1
24PF
2.2uF
C24
1
24PF
0.1uf
C25
2
0.1uf
C26, C35
1
22uF
C28
1
2.2NF
10uF
C29
1
47PF
2.2uF
C30
1
2.2UF
4pF
C32
1
2.2pF
C33
1
2.2UF
0.1uf
C34
1
220R
R1
1
1K1
10k
R2
1
10K
3k3
R3
1
1K1
22R
R4
1
10K
47k
R5
1
10K
10k
R6
1
10K
51k
R7
1
16k
R8
1
10k
R9
1
100R
10k
R10
1
2K4
10k
R11
1
10K
1k1
R12
1
1K1
1k1
R13
2
100R
R14, R15
1
10K
100R
R16
1
1k1
R17

Transponder-11.9.1 design files

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

Transponder-11.9.1: common questions

What microcontroller does the Transponder-11.9.1 use?

The Transponder-11.9.1 is built around the STM32L432KBUx, from the STM32 family.

How big is the Transponder-11.9.1 PCB?

The Transponder-11.9.1 measures 84 × 25 mm, has 4 copper layers and is 1.564 mm thick.

How many components are on the Transponder-11.9.1?

109 components, from 85 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 Transponder-11.9.1 design files?

From the peterantypas/maiana 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 Transponder-11.9.1 design in my own project?

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

Can I test firmware for the Transponder-11.9.1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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