2 layers120 × 72.4 mm
Irrigation ctrl main board
mwick83/irrigation_ctrl_hw
Irrigation Controller aiming to keep (my) plants happy - hardware repository
85 parts1BSD-3-Clause
2 layers65 × 56 mm
RPi RTC RS232
bluespider42/RPi_RS232-RTC1A Raspberry Pi 2 (or B+) expansion board providing RS232 level serial communication, a high quality battery backed RTC and power controls.
- Size
- 65 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 54
- Pads
- 110
- Tracks, vias
- 51, 4
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 19 May 2015
- Updated
- 21 May 2015
Overview
RPi RTC RS232 is an open-source printed circuit board by bluespider42, from the bluespider42/RPi_RS232-RTC repository on GitHub. It is a 2-layer board of 65 × 56 mm with 16 parts on 54 nets, routed with 51 tracks and 4 vias.
It is built around the MAX3222IPW and DS3232S#. Its parts include 6 capacitors, 3 connectors, 2 ICs and 1 resistor.
Main components
2
MAX3222IPW
TSSOP-20-40℃~+85℃ 1mA 2 2 250Kbps 3V~5.5V Transceiver Yes ±15kV TSSOP-20 RS232 ICs ROHSTexas InstrumentsRS232 ICs
DS3232S#
SOIC-20-300mil0℃~+70℃ 2.3V~5.5V Built-in I2C Temperature compensation、Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output、Alarm function SOIC-20-300mil Real Time Clocks ROHSAnalog DevicesReal Time Clocks
README
README.mdRaspberry Pi RTC Serial and Power
Used KiCad Template from XESS Corp. [link] (https://github.com/xesscorp/RPi_Hat_Template)
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitors_SMD:C_1206 | C2, C3, C4, C5, C6 |
| 4 | RPi_Hat:RPi_Hat_Mounting_Hole | , , , | |
| 1 | 1uF | Capacitors_SMD:C_1206 | C1 |
| 1 | CONN_01X03 | Pin_Headers:Pin_Header_Straight_1x03 | P1 |
| 1 | DB9 | Connect:DB9MD | J1 |
| 1 | DS3232 | Housings_SOIC:SOIC-20_7.5x12.8mm_Pitch1.27mm | U1 |
| 1 | MAX3222 | Housings_SOIC:SOIC-18_7.5x11.6mm_Pitch1.27mm | IC1 |
| 1 | R | Resistors_SMD:R_0603 | R1 |
| 1 | RPi_GPIO | RPi_Hat:Pin_Header_Straight_2x20 | J2 |
Similar boards
- 2 layers70 × 56 mm
- 2 layers50 × 60 mm
Alarm clock
mattbooks/alarm-clock
An alarm clock built from scratch (ish) that fades lights on
31 partsMIT - 2 layers140.5 × 30 mm
Type e
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
16 parts3kApache-2.0 - 2 layers41.4 × 14.5 mm
U2f zero
conorpp/u2f-zero
U2F USB token optimized for physical security, affordability, and style
16 parts2.4k - 2 layers77.5 × 33.7 mm
Breakout 72pin 1123038-2-Connector
rusefi/rusefi
rusefi - GPL internal combustion engine control unit
16 parts1.2k - 2 layers122 × 37 mm
V0-UmbilicalBoard
VoronDesign/Voron-Hardware
Cool Hardware designed by the Voron Design group
16 parts1.1kGPL-3.0 - 2 layers152 × 57.6 mm
Videoslotadapter
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
16 parts1kGPL-3.0
Questions
How big is the RPi RTC RS232 PCB?
It measures 65 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RPi RTC RS232 use?
16 parts, built around the MAX3222IPW and DS3232S#. 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 RPi RTC RS232 KiCad files?
From the bluespider42/RPi_RS232-RTC repository on GitHub, at the commit this page was made from: the board is RPi_RTC_RS232.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the RPi RTC RS232 design in my own project?
Its repository states no licence, so its author keeps all rights: ask bluespider42 before reusing the design.