Power extender
About the Power extender PCB
Power extender is an open source PCB design by StarGate01, published on GitHub under the MIT license. It is a 2-layer board measuring 90 × 71 mm, with 72 components from 20 distinct parts.
Other key parts include the ADS1115IDGSR, PCA9557PW, PC817X2CSP9F and CC6902SO-10A. By type, the board carries 25 resistors, 11 ICs, 10 capacitors, 8 connectors, 8 diodes and 6 transistors.
It belongs with the test & measurement designs in this gallery.
From the project
Hardware and software for a power and IO extension PCB with current monitoring and I2C interface.
Hardware and software for a power and IO extension PCB with current monitoring and I2C interface.
This project has been generously supported by PCBWay. Read more about this project and also my review of the manufacturing on my blog: Design And Assembly Of An I2C Relay PCB
Use KiCad with my CustomComponents library to view and edit the hardware project, or download the fabrication files for PCB and/or PCBA manufacturing. I used KiBOM to generate the BOM. You can also download the complete schematics as PDF.
Main components on the Power extender
Power extender bill of materials (BOM)
72 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | ADS1115IDGSR ADS1115IDGS Texas Instruments | TSSOP-10_3x3mm_P0.5mm | U1, U3 |
| 1 | PCA9557PW NXP Semicon | TSSOP-16_4.4x5mm_P0.65mm | U2 |
| 4 | PC817X2CSP9F Sharp Microelectronics | PC817X2CSP9F | U11, U21, U31, U41 |
| 4 | CC6902SO-10A Cross Chip | CC690XSO-XA | U12, U22, U32, U42 |
| 2 | BSS138 Shikues | SOT-23 | Q1, Q2 |
| 4 | PMBT3904 Nexperia | SOT-23 | Q11, Q21, Q31, Q41 |
| 1 | IFACE RPI Any | JST_XH_B5B-XH-A_1x05_P2.54mm_Vertical | J1 |
| 1 | IFACE PASS Any | JST_XH_B5B-XH-A_1x05_P2.54mm_Vertical | J2 |
| 1 | AUX ANALOG Any | JST_XH_B5B-XH-A_1x05_P2.54mm_Vertical | J3 |
| 1 | AUX DIGITAL Any | JST_XH_B5B-XH-A_1x05_P2.54mm_Vertical | J4 |
| 4 | WJ128V-5.0-3P LOAD Ningbo Kangnex Elec | TerminalBlock_Phoenix_MKDS-1,5-3_1x03_P5.00mm_Horizontal | J11, J21, J31, J41 |
| 4 | SRD-05VDC-SL-C Ningbo Songle Relay | Relay_SPDT_SANYOU_SRD_Series_Form_C | K11, K21, K31, K41 |
| 4 | 17-21SURC/S530-A3/TR8 LED Everlight Elec | LED_0805_2012Metric | D11, D21, D31, D41 |
| 4 | 1N4007F Shikues | D_SMAF | D12, D22, D32, D42 |
| 6 | 100N Any | C_0805_2012Metric | C1, C2, C12, C22, C32, C42 |
| 4 | 100P Any | C_0805_2012Metric | C11, C21, C31, C41 |
| 5 | 1K Any | R_0805_2012Metric | R1, R13, R23, R33, R43 |
| 8 | 10K Any | R_0805_2012Metric | R2, R3, R4, R5, R15, R25, R35, R45 |
| 8 | 200R Any | R_0805_2012Metric | R11, R12, R21, R22, R31, R32, R41, R42 |
| 4 | 100R Any | R_0805_2012Metric | R14, R24, R34, R44 |
Power extender design files
The KiCad project lives in the StarGate01/power-extender repository on GitHub; these links point at the commit this page was built from.
Power extender: common questions
How big is the Power extender PCB?
The Power extender measures 90 × 71 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Power extender?
72 components, from 20 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 Power extender design files?
From the StarGate01/power-extender repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Power extender design in my own project?
Yes, under the terms of its MIT license, which StarGate01 chose for the repository.
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