2 layers20.3 × 80.8 mm
Controller
FRC-1721/AccidentCounter
A digital sign hung in the build space advertising days without incident
5 parts1
2 layers58.4 × 141 mm
Segment Display Board
FRC-1721/AccidentCounter1A digital sign hung in the build space advertising days without incident
- Size
- 58.4 × 141 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 94
- Nets
- 113
- Pads
- 328
- Tracks, vias
- 669, 99
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 31 Jul 2021
- Updated
- 19 Oct 2023
Overview
Segment Display Board is an open-source printed circuit board by FRC-1721, from the FRC-1721/AccidentCounter repository on GitHub. It is a 2-layer board of 58.4 × 141 mm with 94 parts on 113 nets, routed with 669 tracks and 99 vias.
It is built around the ATMEGA328P-AU, FT232RL and DS1307Z+, with the SN74HC595D, MMBT3904 and MMBT3906 among its other parts. Its parts include 35 resistors, 14 transistors, 13 capacitors, 7 connectors and 6 ICs. It belongs with the lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
6
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
FT232RL
SSOP-28-208mil-40℃~+85℃ 3.3V~5.25V、4V~5.25V USB 2.0 USB to UART SSOP-28-208mil USB Converters ROHSFTDIUSB Converters
DS1307Z+
SO-80℃~+70℃ 10nA 300nA 4.5V~5.5V Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output External I2C SO-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
SN74HC595D
SOIC-16-40℃~+85℃ 1 26ns@6V,50pF 29MHz 2V~6V 6mA 74HC 8 Serial-to-Serial or Parallel Tri-State SOIC-16 Shift Registers ROHSTexas InstrumentsShift Registers
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)MMBT3906
SOT-23-55℃~+150℃ 1 PNP 100 100nA 200mA 200mW 300MHz 300mV 40V 5V PNP SOT-23 Bipolar (BJT) ROHSTWGMCBipolar (BJT)
README
readme.md
Watch the Youtube Video here.
Welcome!
This repo contains all the firmware and hardware for Tidal Force's "Days Worked Without Incident" counter.
If you're looking for the latest docs/builds, see our Releases Page.
Getting Started
First, clone this repo (and optionally checkout a branch)
git clone https://github.com/FRC-1721/AccidentCounter.git
cd AccidentCounter
git checkout new_boardInit Submodules
Some libraries and resources are included as submodules, run the following command to initialize them before opening the main sch
(If you get a missing library error, make sure to do this)
git submodule update --init --recursiveParts
94| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 10K | Resistor_SMD:R_0805_2012Metric | R204, R205, R207, R208, R209, R302, R601, R701, R801, R901, R1001, R1101, R1201 |
| 7 | 100nF | Capacitor_SMD:C_0805_2012Metric | C301, C302, C303, C304, C402, C403, C501 |
| 7 | 1K | Resistor_SMD:R_0805_2012Metric | R201, R202, R203, R206, R303, R304, R401 |
| 7 | 2K2 | Resistor_SMD:R_0805_2012Metric | R602, R702, R802, R902, R1002, R1102, R1202 |
| 7 | 680R | Resistor_SMD:R_0805_2012Metric | R603, R703, R803, R903, R1003, R1103, R1203 |
| 7 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q601, Q701, Q801, Q901, Q1001, Q1101, Q1201 |
| 7 | MMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q602, Q702, Q802, Q902, Q1002, Q1102, Q1202 |
| 2 | 100nf | Capacitor_SMD:C_0805_2012Metric | C201, C202 |
| 2 | 22pf | Capacitor_SMD:C_0805_2012Metric | C203, C204 |
| 2 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP501, JP502 |
| 1 | 10uf | Capacitor_SMD:CP_Elec_4x3 | C401 |
| 1 | 16mHz | Crystal:Crystal_SMD_HC49-SD | Y201 |
| 1 | 19V Input | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J401 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C404 |
| 1 | 32.768kHz | Crystal:Crystal_C38-LF_D3.0mm_L8.0mm_Horizontal | Y202 |
| 1 | 3v | Battery:BatteryHolder_Keystone_3034_1x20mm | BT201 |
| 1 | 4K7 | Resistor_SMD:R_0805_2012Metric | R301 |
| 1 | 5inSegment | KenwoodFox:5inSegment | U501 |
| 1 | ATmega328P-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U201 |
| 1 | DAY_ADV | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW203 |
| 1 | DAY_RESET | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW202 |
| 1 | DAY_SUB | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW204 |
| 1 | DS1307Z+ | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U202 |
| 1 | EXT BTN | Connector_JST:JST_EH_S4B-EH_1x04_P2.50mm_Horizontal | J202 |
| 1 | FT232RL | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U301 |
| 1 | IN | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J101 |
| 1 | LOGO | KenwoodFox:TIDAL_FORCE_LOGO | G*** |
| 1 | LOGO | 1721_templates:QRCODE_AccidentCounter | G*** |
| 1 | NCV1117ST50T3G | Package_TO_SOT_SMD:SOT-223 | U401 |
| 1 | OUT | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J102 |
| 1 | PROG | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J302 |
| 1 | PWR | LED_SMD:LED_0805_2012Metric | D401 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW201 |
| 1 | RSTBridge | Jumper:SolderJumper-2_P1.3mm_Bridged_Pad1.0x1.5mm | JP201 |
| 1 | RX | LED_SMD:LED_0805_2012Metric | D301 |
| 1 | SN74HC595 | KenwoodFox:SN74HC595 | U502 |
| 1 | STAT | LED_SMD:LED_0805_2012Metric | D201 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP301 |
| 1 | TX | LED_SMD:LED_0805_2012Metric | D302 |
| 1 | Tag Connect | Connector:Tag-Connect_TC2050-IDC-FP_2x05_P1.27mm_Vertical | J201 |
| 1 | USB_B_Micro | Connector_USB:USB_Mini-B_Lumberg_2486_01_Horizontal | J301 |
The 92 most common of 94 parts.
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Questions
How big is the Segment Display Board PCB?
It measures 58.4 × 141 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Segment Display Board use?
94 parts, built around the ATMEGA328P-AU, FT232RL, DS1307Z+ and SN74HC595D. 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 Segment Display Board KiCad files?
From the FRC-1721/AccidentCounter repository on GitHub, at the commit this page was made from: the board is Hardware/Segment_Display_Board/Segment_Display_Board.kicad_pcb and its schematic Hardware/Controller/Controller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Segment Display Board design in my own project?
Its repository states no licence, so its author keeps all rights: ask FRC-1721 before reusing the design.