HardLabs

1 1

BooyahDev·Silica-Custom·four_cards/cad/baseline/1_1.kicad_pcb

1 1 PCB layout, top view — open source AVR/Arduino board by BooyahDev

About the 1 1 PCB

1 1 is an open source AVR/Arduino PCB design by BooyahDev, published on GitHub under the Unlicense license. It is a 2-layer board measuring 80 × 50 mm, with 12 components from 9 distinct parts.

Its main chip is the ATTINY1616-MNR, from the AVR/Arduino family. By type, the board carries 4 capacitors, 3 resistors, 2 diodes, 1 IC, 1 connector and 1 antenna.

From the project

ATtiny1616を1個使い、4枚分のIDm・PMm・サービスコード・システムコード・12データブロックを、外付け24AA08に独立して保存する構成です。

ATtiny1616を1個使い、4枚分のIDm・PMm・サービスコード・システムコード・12データブロックを、外付け24AA08に独立して保存する構成です。

- SW1〜SW4のうち1つを押している間だけ、そのカードが応答します。 - 未押下・複数同時押しでは応答しません。送信直前にも再確認します。 - カードを切り替えた最初の受信フレームは破棄して、選択カードの情報をRAMへ読み込みます。次のリーダのポーリングから応答します。読み込みには数十msを見込みますが実測は必要です。 - 4枚の保存先は256バイトずつの別バンクです。エラーログ32バイトはRAM内のみで、選択変更・電源断で消えます。 - ボタンは通信フレーム間と送信直前に判定します。通信フレームの送信を開始した後のリリースでは、そのフレームは完了します。

Main components on the 1 1

ATTINY1616-MNR

1 1 bill of materials (BOM)

12 components, 9 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY1616-MNR
ATtiny1616-M
U1
1
Conn_01x04_Pin
J1
1
Antenna_Loop
AE1
2
BAT54ST
D_Schottky_Dual_Series_AKC_Parallel
D1, D2
1
47PF
C
C1
1
10NF
C
C2
2
1NF
C
C3, C4
2
R
R1, R2
1
510
R
R3

1 1 design files

The KiCad project lives in the BooyahDev/Silica-Custom repository on GitHub; these links point at the commit this page was built from.

1 1: common questions

What microcontroller does the 1 1 use?

The 1 1 is built around the ATTINY1616-MNR, from the AVR/Arduino family.

How big is the 1 1 PCB?

The 1 1 measures 80 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 1 1?

12 components, from 9 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the 1 1 design files?

From the BooyahDev/Silica-Custom repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the 1 1 design in my own project?

Yes, under the terms of its Unlicense license, which BooyahDev chose for the repository.

Can I test firmware for the 1 1 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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