2 layers60 × 40 mm
Terminal
noisebridge/rfid-access-control
Little system to handle RFID access control at Noisebridge
33 parts47GPL-2.0
2 layers98 × 68 mm
Rpi1-adapter
noisebridge/rfid-access-control47Little system to handle RFID access control at Noisebridge
- Size
- 98 × 68 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 53
- Nets
- 60
- Pads
- 209
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 4
- Created
- 2 Aug 2014
- Updated
- 15 Feb 2023
Overview
Rpi1-adapter is an open-source printed circuit board by noisebridge, from the noisebridge/rfid-access-control repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 98 × 68 mm with 53 parts on 60 nets.
It is built around the MC34063 and S1B. Its parts include 19 resistors, 15 diodes, 7 connectors, 5 capacitors and 4 ICs. It belongs with the interfaces and adapters boards of this library.
Main components
2README
hardware/multi-interface/README.mdMulti serial line driver RJ45
Features
- 4 interfaces with RJ45 plugs (uses a combined 4-block of RJ45 I found in an old switch. Standard distance would need to pull these apart 50 thou/mil)
- TTL compatible with 3.3V, so can interface with Rasberry Pi or Beaglebone Black.
- Creates RS232 line voltages from a single 3.3V supply.
- Uses a SP3232E, essentially a MAX232 compatible chip for 3.3V supply voltage and only 100nF capcitors needed.
- Allows to power external terminals on Line 7 and 8 (see
../terminalfor details) - FYI M3 mounting holes are 18mmx64mm apart.
TODO
Learnings from first board, possibly add to second revision
- It would be useful to have a four line voltage/ground connector, directly compatible with the corresponding 4-pin connector on the terminal side.
- Silk-screen marking RX/TX
- 3-Pin connector for 12v: [GND-12v-GND] to allow turn-agnostic plug.
- Possibe protection circuit: reverse polarity protection diode; PTC fuse
- optional 12V power LED ? Maybe optional 3.3V power LED
- RX/TX LEDs. Check connection of RJ45 plugs, some have built-in LEDs (usually to indicate Ethernet 100Mbps/1Gbps), would be cool to re-use these. Also optional space for discrete diodes.
- All LEDs: also provide pads on the bottom of the board if that is the part visible.
Parts
53| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | Led_Small | LEDs:LED-0805 | D4, D5, D6, D7, D8, D9, D10, D11 |
| 7 | 1k2 | Resistors_SMD:R_0805_HandSoldering | R1, R2, R3, R5, R6, R7, R8 |
| 4 | 180 | Resistors_SMD:R_0805_HandSoldering | R12, R13, R14, R15 |
| 4 | R | Resistors_SMD:R_0805_HandSoldering | R16, R17, R18, R19 |
| 4 | S1B | Diodes_SMD:Diode-SMA_Standard | D12, D13, D14, D15 |
| 3 | OPTO-TRANSISTOR-4 | Housings_DIP:DIP-16_W7.62mm_LongPads | U1, U2, U4 |
| 2 | 100n | Capacitors_SMD:C_0805_HandSoldering | C2, C5 |
| 2 | D | Diodes_ThroughHole:Diode_DO-35_SOD27_Horizontal_RM10 | D2, D3 |
| 2 | IRF9362PbF | Power_Integrations:SO-8 | Q1, Q2 |
| 1 | 0R3 | Resistors_SMD:R_0805_HandSoldering | R9 |
| 1 | 100u | Capacitors_SMD:C_1206_HandSoldering | C4 |
| 1 | 100u | Capacitors_ThroughHole:C_Radial_D10_L16_P5 | C3 |
| 1 | 110p | Capacitors_SMD:C_0805_HandSoldering | C1 |
| 1 | 12V | Connect:JACK_ALIM | P6 |
| 1 | 12V actor outputs | terminal:TerminalBlock-8pin-3.5mm | P8 |
| 1 | 1k | Resistors_SMD:R_0805_HandSoldering | R10 |
| 1 | 1k2 | Resistors_SMD:R_0805 | R4 |
| 1 | 3k | Resistors_SMD:R_0805_HandSoldering | R11 |
| 1 | CONN_02X13 | Pin_Headers:Pin_Header_Straight_2x13 | P2 |
| 1 | D_Schottky_Small | Diodes_SMD:Diode-SMA_Handsoldering | D1 |
| 1 | I2C | Pin_Headers:Pin_Header_Straight_1x02 | P1 |
| 1 | L_Small | Inductors:INDUCTOR_V | L1 |
| 1 | MC34063 | Housings_SOIC:SOIC-8_3.9x4.9mm_Pitch1.27mm | U3 |
| 1 | Sensors 1 | terminal:TerminalBlock-8pin-3.5mm | P4 |
| 1 | Sensors 2 | terminal:TerminalBlock-8pin-3.5mm | P7 |
| 1 | UART | Pin_Headers:Pin_Header_Straight_1x02 | P3 |
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Questions
How big is the Rpi1-adapter PCB?
It measures 98 × 68 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Rpi1-adapter use?
53 parts, built around the MC34063 and S1B. 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 Rpi1-adapter KiCad files?
From the noisebridge/rfid-access-control repository on GitHub, at the commit this page was made from: the board is hardware/rpi1-adapter/rpi1-adapter.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Rpi1-adapter design in my own project?
Its repository publishes it under the GPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).