2 layers
2 layers44.5 × 23.4 mm
ProbUSBis a1
emdarcher/probUSBis_hardware1hardware files for probUSBis board, a custimized USB ATtiny85 board based on LittleWire and DigiSpark.
- Size
- 44.5 × 23.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 20
- Pads
- 75
- Tracks, vias
- 181, 2
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 2 Sep 2014
- Updated
- 15 Dec 2014
Overview
ProbUSBis a1 is an open-source printed circuit board by emdarcher, from the emdarcher/probUSBis_hardware repository on GitHub. It is a 2-layer board of 44.5 × 23.4 mm with 26 parts on 20 nets, routed with 181 tracks and 2 vias.
It is built around the LM78L05ACZ and JUMPER3. Its parts include 8 diodes, 5 resistors, 4 connectors, 2 capacitors and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
LM78L05ACZ
TO-920℃~+125℃@(Tj) 1 100mA 20V 3mA 40uVrms 5V 62dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive TO-92 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsJUMPER3
HDR-TH_3P-P2.54-L7.6-W2.5HDR-TH-3P-2.54mm New Arrivals ROHSWürth ElektronikUncategorised
README
README.mdprobUSBis Hardware
Hardware files for probUSBis board.
This board is heavily inspired and based off of the LittleWire and DigiSpark projects, with some little features of my own added to it.
The files are being made in KiCAD, but PDFs of the schematics will be made for releases.
Link to the Hackaday Projects page for this thing.
I have also made some code to run on this board in my probUSBis_programs repository.
here is an image of the rev_a1 schamatic:
##WARNING!
- rev_a1 has a serious PCB error! The layout for the USB_A_MALE connector is flipped due to accidentally using a female layout.
- Solutions:
- if you still want a male USB plug on the board, you can solder it upside down, with pins sticking up into the bottom of the board.
- Just don't use a male USB plug, and solder a suface mount female mini USB B jack on the top of the board in the designated location.
- Solutions:
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | LOGO | LOGO | G***, G***, G*** |
| 2 | 1K_R | R1 | R4, R5 |
| 2 | 3.6V_ZENER | D3 | D2, D3 |
| 2 | 68R | R1 | R2, R3 |
| 2 | Si_DIODE | D3 | D6, D7 |
| 1 | 1.5K_R | R1 | R1 |
| 1 | 100nF_C | C1 | C2 |
| 1 | 10uF_CP1 | C1V5 | C1 |
| 1 | ATTINY85-P | DIP-8__300_ELL | IC1 |
| 1 | CONN_4 | pin4x1 | P3 |
| 1 | CONN_8 | pin8x1 | P2 |
| 1 | DIODE | D3 | D4 |
| 1 | JUMPER | SM0603 | JP1 |
| 1 | JUMPER3 | PIN_ARRAY_3X1 | JP2 |
| 1 | LM78L05ACZ | TO92 | U1 |
| 1 | ON_LED | LED-3MM | D8 |
| 1 | Protect_DIODE | D3 | D1 |
| 1 | USB-MINI-B | USB_MINI_B | CON1 |
| 1 | USB_A_MALE | USB_A | P1 |
| 1 | USER_LED | LED-3MM | D5 |
Questions
How big is the ProbUSBis a1 PCB?
It measures 44.5 × 23.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ProbUSBis a1 use?
26 parts, built around the LM78L05ACZ and JUMPER3. 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 ProbUSBis a1 KiCad files?
From the emdarcher/probUSBis_hardware repository on GitHub, at the commit this page was made from: the board is rev_a1/probUSBis_a1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ProbUSBis a1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask emdarcher before reusing the design.
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