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Junction Box

EasternEdgeRobotics·Electrical_2019·PCBs/Junction Box/Junction Box.kicad_pcb

Junction Box PCB layout, top view — open source Microchip SAM board by EasternEdgeRobotics

About the Junction Box PCB

Junction Box is an open source Microchip SAM PCB design by EasternEdgeRobotics, published on GitHub under the MIT license. It is a board measuring 80 × 90 mm, with 104 components from 53 distinct parts.

Its main chip is the ATSAMD21E16L-MFT, from the Microchip SAM family. Other key parts include the FT230XS, ACS711, DBQ0135V2, TLV733P and A4982. By type, the board carries 42 capacitors, 24 resistors, 17 ICs, 9 crystals, 6 LEDs and 4 jumpers.

From the project

Repository for holding PCB designs, Pspice files, and other shocking thigns!

Looking for documentation? See the wiki.

Looking for control software? See the 2019 repo.

Main components on the Junction Box

FT230XSACS711DBQ0135V2TLV733PATSAMD21E16L-MFTA4982RINGSCREWRESETSWITCHRELAY

Junction Box bill of materials (BOM)

104 components, 53 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
FT230XS
IC1
1
ACS711
ATMEGA328P-AUR
U1
1
DBQ0135V2
ATTINY45-20XU
U2
1
TLV733P
BC817-40
U3
1
ATSAMD21E16L-MFT
BC817-40
U4
4
A4982
U$1, U$2, U$3, U$4
6
RINGSCREW
U$5, U$6, U$7, U$8, U$9, U$10
1
RESETSWITCH
U$11
1
RELAY
U$13
1
CRYSTAL
Q1
1
MINI-USB-32005-201
X1
6
C-GRID-04-70553
X2, X3, X5, X6, X7, X8
1
C-GRID-03-70553
X4
1
C-GRID-02-70553
X9
1
500MA
C1S_1.5
F1
3
JP1E
JP1, JP2, JP4
1
PINHD-1X6
JP3
6
LEDCHIP-LED0603
LED1, LED2, LED3, LED4, LED5, LED6
4
1UF
0.22uF
C1, C15, C17, C20
2
0.1UF
0.1uF
C2, C21
Show 33 more
QtyPartRefs
1
4.7NF
47uF
C3
1
4.7NF
0.22uF
C4
3
1UF
0.1uF
C5, C10, C16
1
47UF
0.22uF
C6
2
220UF
0.1uF
C7, C8
2
10UF
0.1uF
C9, C14
1
0.1UF
22pF
C11
1
10UF
22pF
C12
1
0.1UF
0.22uF
C13
1
22PF
0.1uF
C18
1
22PF
47uF
C19
5
0.22uF
C22, C24, C27, C29, C31
7
0.1uF
C23, C25, C28, C30, C32, C37, C38
2
47uF
C26, C33
2
10uF
C34, C39
2
47pF
C35, C36
2
0.01uF
C40, C41
1
1uF
C42
1
10K
100K
R1
1
698K
0.27
R2
1
200K
100K
R3
5
0.27
R4, R13, R14, R17, R18
1
10K
R5
2
6.2K
R6, R7
3
330
R8, R21, R22
1
330
0.27
R9
1
10K
0.27
R10
1
680
100K
R11
2
180
R12, R23
1
100K
R15
1
6.2K
R16
2
27
R19, R20
1
1K
R24

Junction Box design files

The KiCad project lives in the EasternEdgeRobotics/Electrical_2019 repository on GitHub; these links point at the commit this page was built from.

Junction Box: common questions

What microcontroller does the Junction Box use?

The Junction Box is built around the ATSAMD21E16L-MFT, from the Microchip SAM family.

How big is the Junction Box PCB?

The Junction Box measures 80 × 90 mm and is 1.6 mm thick.

How many components are on the Junction Box?

104 components, from 53 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 Junction Box design files?

From the EasternEdgeRobotics/Electrical_2019 repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Junction Box design in my own project?

Yes, under the terms of its MIT license, which EasternEdgeRobotics chose for the repository.

Can I test firmware for the Junction Box without the hardware?

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

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