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2 layers36.3 × 47.6 mmProj2, the printed circuit board in 3D

This repo is for the notes and examples that I work through as I am learning how to program microcontrollers

Size
36.3 × 47.6 mm
Copper layers
2
Thickness
1.6 mm
Parts
10
Nets
7
Pads
23
Tracks, vias
33, 0
Pours
1
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
12 Apr 2022
Updated
25 Jan 2026

Overview

Proj2 is an open-source printed circuit board by tonygilkerson, from the tonygilkerson/things repository on GitHub. It is a 2-layer board of 36.3 × 47.6 mm with 10 parts on 7 nets, routed with 33 tracks and 0 vias.

It is built around the NTE955MC. Its parts include 3 resistors, 1 capacitor, 1 IC and 1 diode.

Main components

1

README

README.md

Things

This repo is intended to hold the notes and code examples that I work through as I am learning how to program microcontrollers.

Why?

My current goal is to learn how to program microcontrollers such as the Pico or ESP32. I have several automation projects in mind, mostly involved with watering, climate control and tracking. I also have a few project ideas for my computerized telescope to automate long imaging sessions. A secondary goal is to use a "real" programming language like Go for may projects. I have looked at the Arduino IDE, which seems to be very popular, but I am not really interested. Same for the visual programming tools that I have seen.

What?

This repo has several subfolders each containing the source code and doc for some project. The first subfolder proj01 is me working through a "hello world" project, which for a microcontrollers is a blinking LED. The code is not that interesting but my notes will be from the point of view of a newbie and thus may contain things that were useful to me at the the time.

Reference

Ideas for future projects

Parts

10
QtyValueFootprintReferences
3MountingHoleMountingHole:MountingHole_3mmH1, H2, H3
1100kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR2
11kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1
11uCapacitor_THT:C_Radial_D5.0mm_H11.0mm_P2.00mmC1
1470Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR3
1CR3022projFootprintLib:Coin_Cell_Battery_Holder_3V_PN_107_THTBT1
1LEDLED_THT:LED_D4.0mmD1
1NTE955MCPackage_DIP:DIP-8_W7.62mmU1

Questions

How big is the Proj2 PCB?

It measures 36.3 × 47.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Proj2 use?

10 parts, built around the NTE955MC. 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 Proj2 KiCad files?

From the tonygilkerson/things repository on GitHub, at the commit this page was made from: the board is proj05-getting-to-blinky-pcb/kicad/proj2/proj2.kicad_pcb and its schematic proj05-getting-to-blinky-pcb/kicad/proj/proj.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Proj2 design in my own project?

Its repository states no licence, so its author keeps all rights: ask tonygilkerson before reusing the design.

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