Piridium eps
About the Piridium eps PCB
Piridium eps is an open source PCB design by Alan-JH, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 90.2 × 95.9 mm, with 26 components from 14 distinct parts.
Other key parts include the BQ29209 and R5460N212AF. By type, the board carries 8 resistors, 7 capacitors, 6 battery holders, 2 ICs, 2 transistors and 1 connector.
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 eps
Piridium eps bill of materials (BOM)
26 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ29209 | Texas_S-PVSON-N8_ThermalVias | U1 |
| 1 | R5460N212AF | SOT-23-6 | U2 |
| 2 | Si4186DY | SOIC-8_3.9x4.9mm_P1.27mm | Q1, Q2 |
| 1 | EPS | TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J1 |
| 3 | 18650 | BatteryHolder_Keystone_1042_1x18650 | BT1, BT4, BT5 |
| 1 | 18650 | Keystone_1042_1x18650_Shortpad | BT2 |
| 1 | 18650 | Keystone_1042_1x18650_Shortpad2 | BT3 |
| 1 | 18650 | Keystone_1042_1x18650_Shortpad3 | BT6 |
| 7 | 0.1uF | C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7 |
| 2 | 100R | R_0805_2012Metric | R1, R4 |
| 1 | 160R | R_0805_2012Metric | R2 |
| 3 | 261R | R_0805_2012Metric | R3, R5, R6 |
| 1 | 1K | R_0805_2012Metric | R7 |
| 1 | 20m | R_2512_6332Metric | R8 |
Piridium eps 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 eps: common questions
How big is the Piridium eps PCB?
The Piridium eps measures 90.2 × 95.9 mm, has 2 copper layers and is 0.19 mm thick.
How many components are on the Piridium eps?
26 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the Piridium eps 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 eps 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.
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