HardLabs

Ramn

ToyotaInfoTech·RAMN·hardware/V1_revB/0_ramn/ramn.kicad_pcb

Ramn PCB layout, top view — open source STM32 board by ToyotaInfoTech

About the Ramn PCB

Ramn is an open source STM32 PCB design by ToyotaInfoTech, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 85.6 × 54 mm, with 96 components from 26 distinct parts.

Its main chip is the STM32L443CCTx, from the STM32 family. Other key parts include the STP08CP05XTTR, NCV8163 and ATA6561-GAQW-N. By type, the board carries 43 capacitors, 17 resistors, 12 ICs, 10 test points, 6 connectors and 4 crystals.

From the project

RAMN (Resistant Automotive Miniature Network), a miniature CAN/CAN-FD testbed of 4 Electronic Control Units.

Please see the docs 'Hardware' for more details.

The PCBWay re-orders in the docs are based on the design files in this repo at commit dca0831d852cdd53b45b3e2c7c4c0430066c91ad . When changes are made to the design files here and new orders need to be made, the following procedure should be followed to created updated versions of the files in orders/:

Install kikit and run the script makeorders.{bat|sh}` here from within KiCad 7.0 shell or KiCad 7.0 and follow the manual steps required printed to the console.

Main components on the Ramn

STP08CP05XTTRSTM32L443CCTxNCV8163ATA6561-GAQW-N

Ramn bill of materials (BOM)

96 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STP08CP05XTTR
ATA6561-GAQW-N
STMicroelectronics
U1
4
STM32L443CCTx
U2, U5, U8, U11
4
NCV8163
U3, U6, U9, U12
3
ATA6561-GAQW-N
U4, U7, U10
4
NX3225GD-8MHZ-STD-CRA-3
Y1, Y2, Y3, Y4
1
68021-226HLF
USB_C_Micro
Amphenol ICC (FCI)
J1
1
M20-7821146
Screw_Terminal_01x03
Harwin Inc.
J2
1
PPPC131LFBN-RC
Sullins Connector Solutions
J3
1
M20-7820842
Harwin Inc.
J4
1
M20-7821146
Harwin Inc.
J5
1
SSQ-113-03-G-D
Samtec Inc.
J6
10
—
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +2
4
SML-D12P8WT86
D_Schottky
Rohm Semiconductor
D1, D2, D3, D4
2
CL10B104KB8NNWC
4.7nF
Samsung Electro-Mechanics
C1, C2
2
CL10B104KB8NNWC
100nF
Samsung Electro-Mechanics
C3, C4
8
10pF
C5, C6, C15, C16, C25, C26, C35, C36
4
10uF
C7, C17, C27, C37
19
100nF
C8, C9, C10, C13, C14, C18, C19, C20 +11
8
1uF
C11, C12, C21, C22, C31, C32, C41, C42
3
RMCF0603FT10K0
0R
Stackpole Electronics Inc
R1, R4, R5
Show 6 more
QtyPartRefs
4
RMCF0603FT10K0
60R
Stackpole Electronics Inc
R2, R3, R6, R7
1
RMCF0603FT10K0
DNM
Stackpole Electronics Inc
R8
6
RMCF0603FT10K0
10k
Stackpole Electronics Inc
R9, R10, R11, R12, R13, R14
1
RC0402FR-071K8L
10k
YAGEO
R15
1
0R
R16
1
10k
R17

Ramn design files

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

Ramn: common questions

What microcontroller does the Ramn use?

The Ramn is built around the STM32L443CCTx, from the STM32 family.

How big is the Ramn PCB?

The Ramn measures 85.6 × 54 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ramn?

96 components, from 26 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 Ramn design files?

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

Can I use the Ramn design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which ToyotaInfoTech chose for the repository.

Can I test firmware for the Ramn 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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