2 layers178 × 80 mm
Panel 1x5
flummer/dmm-sao
A small digital multimeter specifically for measuring SAO related stuff
326 parts28CC-BY-SA-4.0
2 layers79 × 16 mm
EB1
robojay/EB1EB1 电脑一号：A self-contained learning platform.
- Size
- 79 × 16 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 62
- Nets
- 25
- Pads
- 116
- Tracks, vias
- 284, 18
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 14 Apr 2015
- Updated
- 22 Apr 2015
Overview
EB1 is an open-source printed circuit board by robojay, from the robojay/EB1 repository on GitHub. It is a 2-layer board of 79 × 16 mm with 62 parts on 25 nets, routed with 284 tracks and 18 vias.
It is built around the CJ2302, B5817W and CJ2305. Its parts include 10 resistors, 6 diodes, 5 transistors, 4 connectors and 2 capacitors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
CJ2302
SOT-23-55℃~+150℃ 1 N-channel 1.2V 10nC@4.5V 115mΩ@2.5V 120pF 2.1A 20V 300pF 400mW 80pF N-Channel SOT-23 MOSFETs ROHSJiangsu Changjing Electronics Technology (CJ)MOSFETs
B5817W
SOD-123-55℃~+150℃ 1A 1mA@20V 20V 450mV@1A Independent SOD-123 Schottky Diodes ROHShongjiachengSchottky DiodesCJ2305
SOT-23-50℃~+150℃ 1 P-Channel 12V 190pF 350mW 4.1A 740pF 90mΩ@1.8V SOT-23 MOSFETs ROHSJiangsu Changjing Electronics Technology (CJ)MOSFETs
README
README.mdEB1 电脑一号：A self-contained learning platform.
The Electric Brain 1 (EB1) 电脑一号 is a simple yet surprisingly capable microprocessor and electronics learning tool.
Photo: EB1 电脑一号
Example Videos: YouTube
KiCad Schematic and PCB files: GitHub
Firmware: Under Development. It is possible to use firmware from similar open source designs. However, we have obtained our own USB PID through pid.codes and any EB1 released to the public will use this. You MUST obtain your own USB VID/PID for your projects unless you are using an EB1 manufactured by us. You MAY NOT release products using our USB VID/PID.
Arduino IDE Compatibility: Under Development. We are currently testing with Version 1.6.3 of the Official Arduino IDE. Installation instructions and files will be provided soon. The first releases will be "hacker friendly" but not necessarily ready for the general public.
Wiki: EB1 电脑一号
Please note:
This is still under development and the design definitely contains errors!
Use at your own risk, and we are not providing ANY user support at this time!
License
This project is licensed as CC-BY-SA 3.0 . You are free to read, study, modify, redistribute, and create products out of our designs as long as you distribute your derivative work under the same license and attribute to us the original design.
Creative Commons 3.0 Attribution, Sharealike
Attributions / Inspirations
Although the general idea for this project was conceived many years ago, its implementation was greatly assisted by the work of Adafruit (Trinket Bootloader, Trinket), Digispark, MIT high-low tech, and all the other folks who have developed/contributed to USB implementation on the Atmel ATtiny processors.
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | CONN_01X01 | RT_Footprints:TESTPOINT_TH | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18 +2 |
| 7 | FIDUCIAL | RT_Footprints:FIDUCIAL_1MM_2MM | FID1, FID2, FID3, FID4, FID5, FID6, FID7 |
| 4 | 470 | RT_Footprints:R_0603 | R6, R7, R8, R11 |
| 4 | CJ2302 | RT_Footprints:SOT-23-GSD | Q2, Q3, Q4, Q5 |
| 3 | 1.5K | RT_Footprints:R_0603 | R1, R3, R9 |
| 2 | 68 | RT_Footprints:R_0603 | R4, R5 |
| 2 | BLUE | RT_Footprints:LED-0805 | D5, D6 |
| 2 | BZX84-3.6V | RT_Footprints:SOT-23-AXC | D2, D3 |
| 2 | CONN_01X06 | RT_Footprints:SAMTEC_SSM-106 | P2, P3 |
| 1 | 0.1uF | RT_Footprints:C_0603 | C1 |
| 1 | 100K | RT_Footprints:R_0603 | R2 |
| 1 | 10uF | RT_Footprints:C_0603 | C2 |
| 1 | ATTINY85-S | RT_Footprints:SOIC-8-W | IC1 |
| 1 | B5817W | RT_Footprints:SOD-123 | D1 |
| 1 | BATTERY | RT_Footprints:BS-6 | BT1 |
| 1 | CJ2305 | RT_Footprints:SOT-23-GSD | Q1 |
| 1 | CONN_01X02 | RT_Footprints:Pin_Header_Straight_1x02 | P4 |
| 1 | EB1 | RT_Footprints:EB-Logo | LOGO4 |
| 1 | FACTORY FOR ALL | RT_Footprints:Logo_Factory_For_All-0 | LOGO1 |
| 1 | FUSE | RT_Footprints:Fuse_SMD1206 | F1 |
| 1 | GREEN | RT_Footprints:LED-0805 | D4 |
| 1 | MOUNTING_HOLE | RT_Footprints:HOLE_3MM_3-5MM_CLEAR | MTG1 |
| 1 | OSH | RT_Footprints:osh-logo-no-name | LOGO3 |
| 1 | REACTIVE TECHNOLOGIES | RT_Footprints:RT_F.SilkS_.6in | LOGO2 |
| 1 | SWITCH_INV | RT_Footprints:MS12D17 | SW1 |
| 1 | SW_PUSH | RT_Footprints:OMRON_B3U-1000P | SW2 |
| 1 | USB-PCB | RT_Footprints:USB-A-PCB | P1 |
Questions
How big is the EB1 PCB?
It measures 79 × 16 mm and has 2 copper layers, 1.6 mm thick.
What parts does the EB1 use?
62 parts, built around the CJ2302, B5817W and CJ2305. 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 EB1 KiCad files?
From the robojay/EB1 repository on GitHub, at the commit this page was made from: the board is EB1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the EB1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask robojay before reusing the design.
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