4 layers31.9 × 17.8 mm TinyPICO, the printed circuit board in 3D

TinyPICO

barcodes are returned as an int, so for example, EAN-13 is denoted as 32

Size: 31.9 × 17.8 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 37
Nets: 56
Pads: 192
Tracks, vias: 539, 168
Pours: 10
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 19 Nov 2023
Updated: 29 Jan 2024

Overview

TinyPICO is an open-source printed circuit board by joelheezen, from the joelheezen/SmartCardApp repository on GitHub. It is a 4-layer board of 31.9 × 17.8 mm with 37 parts on 56 nets, routed with 539 tracks and 168 vias.

It is built around the CP2104EK, ESP32-PICO-D4 and 920-D62A2021S10100, with the PRO-OB-440 among its other parts. Its parts include 10 capacitors, 8 resistors, 4 diodes, 2 ICs and 2 connectors. It belongs with the ESP32 and RISC-V boards of this library.

Main components

README

README.md

SmartCardApp

App to add barcodes to a smartdevice

reading the saved data

use sharedPreferences to get the StringSet this gets a list in the following format:

text

val sharedPref = activity?.getPreferences(Context.MODE_PRIVATE) ?:return
val L = sharedPref.getStringSet("barcodes", HashSet()) // L = ("name0|number0|format0", "name1|number1|format1", ...etc)

then split using a delimiter like so:

text

L.forEach{
    val str = it
    val delimiter = "|"
    val values = str.split(delimiter)
    values[0] = name
    values[1] = number
    values[2] = format
    }

barcode formats

barcodes are returned as an int, so for example, EAN-13 is denoted as 32

https://developers.google.com/android/reference/com/google/mlkit/vision/barcode/common/Barcode#FORMAT_EAN_13

check the link for explanation and complete formats compatible with this scanner.

Parts

Qty	Value	Footprint	References
4	0.1uF	TinyPICO:_0402MP	C1, C2, C6, C14
2		TinyPICO:1X10_NO_SILK	J1, J3
2	100K	TinyPICO:_0402MP	R5, R12
2	10µF	TinyPICO:_0603MP	C3, C10
2	1µF	TinyPICO:_0402MP	C7, C12
2	2K	TinyPICO:_0402MP	R1, R8
1	0.75pF	TinyPICO:_0402MP	C4
1	1.5pF	TinyPICO:_0402MP	C5
1	10K	TinyPICO:_0402MP	R4
1	160K	TinyPICO:_0402MP	R7
1	3K3	TinyPICO:_0402MP	R3
1	442K	TinyPICO:_0402MP	R6
1	7.5nH	TinyPICO:RESC0402_N	L1
1	AP102-2020	TinyPICO:MICROBUILDER_APA102_2020	LED1
1	BAT60J	TinyPICO:SOD323_ST	D4
1	C40942	TinyPICO:USB-B-MICRO-SMD	USB0
1	CP2104	TinyPICO:MICROBUILDER_QFN24_4MM_SMSC	IC2
1	ESP32-PICO-D4	TinyPICO:PICO-D4-QFN48	PICO-D4
1	LIPO	TinyPICO:JSTPH2	JST-LIPO0
1	MUN5214DW1T1G	TinyPICO:DUAL_NPN_SC70-6	Q3
1	NCP170AMX300TCG	TinyPICO:VREG_NCP170AMX300TCG	U1
1	ORANGE	TinyPICO:0402.LED	D3
1	OSHW-LOGOS	TinyPICO:OSHW-LOGO-S	LOGO1
1	PRO-OB-440	TinyPICO:PRO-OB-440	U$8
1	PSRAM0	TinyPICO:SOP8	LY68L6400SLIT0
1	RED	TinyPICO:0402.LED	D1
1	TINYPICO-P-FETKMB	TinyPICO:SOT883(B)	T2
1	TINYPICO-PNPAMB	TinyPICO:SOT883(B)	PDTA143TMB,315
1	TP4065-4.2V-SOT25-R	TinyPICO:SOT23-5	CHRG0

Questions

How big is the TinyPICO PCB?

It measures 31.9 × 17.8 mm and has 4 copper layers, 1.6 mm thick.

What parts does the TinyPICO use?

37 parts, built around the CP2104EK, ESP32-PICO-D4, 920-D62A2021S10100 and PRO-OB-440. 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 TinyPICO KiCad files?

From the joelheezen/SmartCardApp repository on GitHub, at the commit this page was made from: the board is TinyPICO/TinyPICO.kicad_pcb and its schematic TinyPICO/TinyPICO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the TinyPICO design in my own project?

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

Category and platform

ESP32 RISC-V

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/joelheezen-smartcardapp" title="TinyPICO in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/joelheezen-smartcardapp.jpg" alt="TinyPICO" width="1200" height="900">

A picture that opens the board, for a README

[![TinyPICO](https://pcbkit.io/embed/boards/joelheezen-smartcardapp.jpg?size=s)](https://pcbkit.io/boards/joelheezen-smartcardapp)

Source

Repository: joelheezen/SmartCardApp
Board file: TinyPICO/TinyPICO.kicad_pcb
Commit: fd81928
Licence: Not stated

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