2 layers80 × 47 mm
Dusk to dawn
PhysicsUofRAUI/laoe_projects
A place to hold all projects I have made while reading the book Learning The Art of Electronics
26 partsMIT
2 layers109.2 × 57.1 mm
SRAM Programming
PhysicsUofRAUI/laoe_projectsA place to hold all projects I have made while reading the book Learning The Art of Electronics
- Size
- 109.2 × 57.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 104
- Pads
- 176
- Tracks, vias
- 344, 42
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 18 Dec 2024
- Updated
- 14 Mar 2025
Overview
SRAM Programming is an open-source printed circuit board by PhysicsUofRAUI, from the PhysicsUofRAUI/laoe_projects repository on GitHub, published under the MIT licence. It is a 2-layer board of 109.2 × 57.1 mm with 20 parts on 104 nets, routed with 344 tracks and 42 vias.
Its parts include 8 resistors, 8 diodes, 1 capacitor, 1 IC and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.
README
power_supply_project/readme.mdIntro
This project is part of my learning for the learning the Art of Electronics. It is a simple power supply that I made based on what I've learned.
Regulator calculations
Output Voltage
Vref = 1.25V
R2 = 2k
R4 = 2.2k
R5 = 0 - 10k
Next part is going to ignore the Iref error term that comes out of the reference terminal for simplicity.
Vout ~ Vref[1 + (R4+R5)/R2]
The minimum Vout would then be: Vout = 1.25V + 1.25V(2.2k/2k) = 2.6V
The maximum Vout would then be: Vout = 1.25V + 1.25V(12.2k/2k) = 8.9V
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | LED | LED_THT:LED_D5.0mm | D1, D2, D3, D4, D5, D6, D7, D8 |
| 8 | R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 |
| 1 | 0.01u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | Arduino_Mega2560_R3_Shield | arduino-library:Arduino_Mega2560_R3_Shield | A1 |
| 1 | IS62C256AL | Package_SO:SOP-28_8.4x18.16mm_P1.27mm | U1 |
| 1 | SW_DIP_x08 | Button_Switch_THT:SW_DIP_SPSTx08_Slide_6.7x21.88mm_W7.62mm_P2.54mm_LowProfile | SW1 |
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Questions
How big is the SRAM Programming PCB?
It measures 109.2 × 57.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SRAM Programming use?
20 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the SRAM Programming KiCad files?
From the PhysicsUofRAUI/laoe_projects repository on GitHub, at the commit this page was made from: the board is SRAM_Programming/SRAM_Programming.kicad_pcb and its schematic SRAM_Programming/SRAM_Programming.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SRAM Programming design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).