Solar PCB
About the Solar PCB
Solar PCB is an open source PCB design by Raziz1, published on GitHub. It is a 2-layer board measuring 70 × 39 mm, with 24 components from 18 distinct parts.
Other key parts include the LT3652EMSE. By type, the board carries 8 resistors, 6 capacitors, 5 diodes, 3 connectors, 1 IC and 1 inductor.
It belongs with the power & battery and sensors designs in this gallery.
From the project
A power management PCB designed to charge a lithium-ion battery and power a low-power Arduino application
For this application, I would like the Arduino to last as long as possible on battery power. To reduce it's power consumption I referenced the following two articles: The Arduino Guide to Low Power Design, Arduino minimal power usage, and Power saving techniques for microprocessors . A lot of the common techniques involved disabling unused peripherals, reducing clock speeds, and forcing the CPU into a low power mode. One extremely effective method that I did not attempt was utilizing a "bare bones" Atmega328 board. By stripping away a lot of unnecessary components (i.e. USB controller, LDO…
Main components on the Solar PCB
Solar PCB bill of materials (BOM)
24 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LT3652EMSE | MSOP-12-1EP_3x4mm_P0.65mm_EP1.65x2.85mm | U1 |
| 3 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1, J2, J3 |
| 1 | GREEN LED | LED_0603_1608Metric | D1 |
| 1 | RED LED | LED_0603_1608Metric | D2 |
| 1 | D_Schottky | D_SOD-323 | D3 |
| 1 | D_Schottky | D_SMC_Handsoldering | D4 |
| 1 | D_Schottky | D_SMP_DO-220AA | D5 |
| 1 | 24uH | L_Wuerth_WE-PDF_Handsoldering | L1 |
| 3 | 10u | C_0603_1608Metric | C1, C3, C5 |
| 2 | 1u | C_0603_1608Metric | C2, C4 |
| 1 | 100u | C_0603_1608Metric | C6 |
| 2 | 1.1k | R_0603_1608Metric | R1, R2 |
| 1 | 68k | R_0603_1608Metric | R3 |
| 1 | 330k | R_0603_1608Metric | R4 |
| 1 | 410k | R_0603_1608Metric | R5 |
| 1 | 0.2 | R_0603_1608Metric | R6 |
| 1 | 270k | R_0603_1608Metric | R7 |
| 1 | 100k | R_0603_1608Metric | R8 |
Solar PCB design files
The KiCad project lives in the Raziz1/Solar_PCB repository on GitHub; these links point at the commit this page was built from.
Solar PCB: common questions
How big is the Solar PCB?
The Solar PCB measures 70 × 39 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Solar PCB?
24 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Solar PCB design files?
From the Raziz1/Solar_PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Solar PCB design in my own project?
The repository has no license, so all rights stay with Raziz1. Use it as a reference, and ask the author before reusing the design.
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