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Piridium bus

Alan-JH·piridium-bus·piridium-bus/piridium-bus.kicad_pcb

Piridium bus PCB layout, top view — open source Raspberry Pi board by Alan-JH

About the Piridium bus PCB

Piridium bus is an open source Raspberry Pi PCB design by Alan-JH, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 90.2 × 95.9 mm, with 156 components from 58 distinct parts.

Its main chip is the Raspberry_Pi_Zero, from the Raspberry Pi family. Other key parts include the LM1117-3.3, MAX6369, TPS54394RSAR, INA180A3 and 74HC126. By type, the board carries 51 resistors, 37 capacitors, 17 ICs, 14 transistors, 11 diodes and 9 connectors.

It belongs with the power & battery, science & space and rf & radio designs in this gallery.

From the project

Flight Computer Board for TJ Cubesat Bus design

Clock: DS3232M RTC with CR2032 Battery Backup

Battery: Six 18650 Li-Ion cells (builder's discretion, recommend protected 3-4Ah) in a 3P2S configuration

Battery protection: ~7.7A overcurrent protection (charge & discharge), 4.29V/cell overcharge protection with hysteresis down to 4.05V/cell, 3V/cell overdischarge protection with hysteresis up to 3.2V/cell

Solar input: 4 input connectors feeding two regulators with 25V Max (limited by the voltage divider for telemetry) with charge cutoff at 8.27V, MPPT settable using a trim pot

Main components on the Piridium bus

LM1117-3.3MAX6369TPS54394RSARINA180A374HC126DS3232MMAX6035xxUR30MCP3208LT3652EMSESN74LVC1G14DBVMAX4373FRaspberry_Pi_ZeroBNO0559602N

Piridium bus bill of materials (BOM)

156 components, 58 distinct parts.

QtyPartRefs
1
LM1117-3.3
U1
1
MAX6369
U2
1
TPS54394RSAR
U3
4
INA180A3
U4, U9, U11, U13
1
74HC126
U5
1
DS3232M
U6
1
MAX6035xxUR30
U7
1
MCP3208
U8
2
LT3652EMSE
U10, U12
2
SN74LVC1G14DBV
U14, U16
2
MAX4373F
U15, U17
1
Raspberry_Pi_Zero
A1
1
BNO055
A2
1
9602N
A3
7
DMP3015LSSQ
Q1, Q3, Q5, Q6, Q8, Q10, Q13
2
Si4186DY
Q2, Q4
5
2N7002
Q7, Q9, Q11, Q12, Q14
1
EPS
J1
1
INHIBITS
J2
1
MODEM UART
J3
Show 38 more
QtyPartRefs
1
ANT
J4
1
PAYLOAD
J5
2
IN1
J6, J8
2
IN2
J7, J9
1
CR2032
BT1
1
WDT_EN
JP1
2
100K
RV1, RV2
1
5V
TP1
2
GND
TP2, TP3
1
5VP
TP4
2
VIN
TP5, TP7
1
LED
D1
4
DFLS130L-7
D2, D3, D6, D7
2
CMSH3-40MA
D4, D8
4
RB051MM-2Y
D5, D9, D10, D11
2
4.7uH
L1, L2
2
10uH
L3, L4
10
10uF
C1, C7, C11, C21, C23, C25, C28, C30 +2
16
0.1uF
C2, C3, C4, C14, C16, C17, C19, C20 +8
4
22uF
C5, C6, C12, C13
2
0.1uF
C8, C9
5
1uF
C10, C15, C18, C24, C29
7
100K
R1, R2, R9, R10, R12, R14, R21
5
100R
R3, R6, R11, R13, R22
2
124K
R4, R15
2
22.1K
R5, R16
2
6K
R7, R18
2
4K
R8, R19
4
4m
R17, R25, R34, R41
1
200K
R20
12
10K
R23, R24, R26, R27, R29, R36, R42, R43 +4
2
75K
R28, R35
2
191K
R30, R37
2
147K
R31, R38
2
97.6K
R32, R39
2
50m
R33, R40
2
510K
R44, R49
2
10m
R46, R51

Piridium bus design files

The KiCad project lives in the Alan-JH/piridium-bus repository on GitHub; these links point at the commit this page was built from.

Piridium bus: common questions

What microcontroller does the Piridium bus use?

The Piridium bus is built around the Raspberry_Pi_Zero, from the Raspberry Pi family.

How big is the Piridium bus PCB?

The Piridium bus measures 90.2 × 95.9 mm, has 4 copper layers and is 1.56 mm thick.

How many components are on the Piridium bus?

156 components, from 58 distinct parts. The full bill of materials is listed on this page.

Where can I download the Piridium bus design files?

From the Alan-JH/piridium-bus repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Piridium bus design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Piridium bus without the hardware?

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

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