2 layers55 × 485 mm
2 layers180 × 120 mm
OBeMs Pulse PCB
johnbeardmore/oBeMS3Open source environmental monitoring, automatic meter reading and building management system.
- Size
- 180 × 120 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 140
- Nets
- 161
- Pads
- 1,017
- Tracks, vias
- 1,841, 59
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 17 May 2014
- Updated
- 14 Aug 2017
Overview
OBeMs Pulse PCB is an open-source printed circuit board by johnbeardmore, from the johnbeardmore/oBeMS repository on GitHub, published under the LGPL-3.0 licence. It is a 2-layer board of 180 × 120 mm with 140 parts on 161 nets, routed with 1,841 tracks and 59 vias.
It is built around the MCP3008-I/P, DS18B20 and LM2575T-5, with the LM2576WT, MCP4812-E/P and TLC555N among its other parts. Its parts include 57 resistors, 33 connectors, 16 diodes, 11 capacitors and 8 ICs.
Main components
8
MCP3008-I/P
PDIP-16-40℃~+85℃ 1.35MHz~3.6MHz 10 1LSB 2.7V~5.5V 200kHz 5nA 61dB 8 Multiplexers SAR SPI Yes PDIP-16 Analog to Digital Converters (ADC) ROHSMicrochip TechnologyAnalog To Digital Converters (ADC)
DS18B20
TO-92-55℃~+125℃ 12bit 3V~5.5V 750ms Single-bus ±0.4℃ TO-92 Temperature Sensors ROHSUMWTemperature Sensors
LM2575T-5
TO-220-5-40℃~+125℃@(TJ) 1 1A 4.75V~40V 52kHz 5V 5mA Buck Buck Built-in Fixed No TO-220-5 DC-DC Converters ROHSonsemiDC-DC ConvertersLM2576WT
TO-220-5-40℃~+125℃@(TJ) 1 1.23V~37V 3A 4V~40V 52kHz Adjustable Buck Buck Built-in No TO-220-5 DC-DC Converters ROHSMicrochip TechnologyDC-DC Converters
MCP4812-E/P
PDIP-8-40℃~+125℃ 10 2 2.7V~5.5V 3.5LSB 4.5us 415uA Integrated buffer、Power-on reset、Power-down mode、Multi-chip synchronization、Programmable gain、Built-in reference source SPI Voltage Buffer PDIP-8 Digital to Analog Converters (DAC) ROHSMicrochip TechnologyDigital To Analog Converters (DAC)TLC555N
DIP-8-40℃~+85℃ 1 30uA 4.5V~15V DIP-8 555 Timers / Counters ROHSHGSEMITimers / CountersBC546
TO-921 NPN 100mA 100nA 300MHz 500mW 65V 6V 800 90mV、250mV NPN TO-92 Bipolar (BJT) ROHSDDFBipolar (BJT)BC556
TO-92-55℃~+150℃ 1 PNP 100mA 100nA 150MHz 300mV 5V 625mW 65V 800 PNP TO-92 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
README
README.mdoBeMS
Open source environmental monitoring, automatic meter reading and building management system.
Note that the items in [square brackets] below are planned, but not yet implemented.
Open Source GPL2 system for energy and environmental measurement, automatic meter reading (AMR), [building energy management (BEMS), and building management (BMS)].
The system consists of server processes which provide access to sensors and actuators via IP address and port number. Server processes are used which provide user interfaces, [make BMS and BEMS decisions], and relay information to archival stores.
An archival store is provided to record environmental conditions, [and BMS and BEMS decisions].
Modules can be distributed around the internet, and in this sense it may be seen as part of the Internet Of Things (IoT).
Initial development has mostly taken place on the Raspberry Pi under Raspbian, though it should port perfectly well to other linux based boards, e.g. the BeagleBone.
The archival database has been implemented on an Intel Linux box to avoid doing frequent writes to SD cards.
Parts
140| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | 120 | REInnovationFootprint:TH_Resistor_1 | R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26 +28 |
| 8 | LED | REInnovationFootprint:LED-5MM_larg_pad | D4, D5, D6, D7, D8, D9, D10, D11 |
| 6 | 1u | matts_components:C1_wide_lg_pad_2 | C3, C4, C5, C7, C8, C9 |
| 3 | 100k | REInnovationFootprint:TH_Resistor_1 | R55, R56, R57 |
| 3 | 10k | REInnovationFootprint:TH_Resistor_1 | R2, R8, R9 |
| 3 | DIO_INPUT | REInnovationFootprint:HEADER_12Way_Wiedermuller_SX | P21, P25, P29 |
| 3 | DIO_OUTPUT | REInnovationFootprint:Pin_Header_Straight_2x12 | P18, P22, P26 |
| 3 | GROUND | REInnovationFootprint:Pin_Header_Straight_2x12_SM_Connect | P20, P24, P28 |
| 3 | PULL_UP | REInnovationFootprint:Pin_Header_Straight_2x12_SM_Connect | P19, P23, P27 |
| 2 | 100u | REInnovationFootprint:C2V8_V | C1, C10 |
| 2 | 1M | REInnovationFootprint:TH_Resistor_1 | R3, R10 |
| 2 | 1N5822 | REInnovationFootprint:TH_Diode_DO-201AD | D1, D15 |
| 2 | 1k | REInnovationFootprint:TH_Resistor_1 | R4, R7 |
| 2 | AC Cover Mount Hole | REInnovationFootprint:3mm_hole | H1, H2 |
| 2 | MCP3008 | REInnovationFootprint:DIP-16__300_ELL_lg_pad | U5, U6 |
| 1 | 100 | REInnovationFootprint:TH_Resistor_1 | R6 |
| 1 | 1000u | REInnovationFootprint:C2V8_V | C11 |
| 1 | 1000u | C2V8_V | C2 |
| 1 | 100uH | REInnovationFootprint:TH_Inductor_ELC18B101L | L2 |
| 1 | 1A/2A | REInnovationFootprint:TH_Fuse_Holder_5-20_CPC | F2 |
| 1 | 1N4001 | REInnovationFootprint:TH_Diode_1 | D2 |
| 1 | 1WIRE | REInnovationFootprint:Pin_Header_Straight_1x04 | P1 |
| 1 | 330uH | REInnovationFootprint:TH_Inductor | L1 |
| 1 | 39k | REInnovationFootprint:TH_Resistor_1 | R5 |
| 1 | 3V3 | REInnovationFootprint:Pin_Header_Straight_2x08 | P11 |
| 1 | 4017 | REInnovationFootprint:DIP-16__300_ELL_lg_pad | U4 |
| 1 | 47u | REInnovationFootprint:C2V8_VandA | C6 |
| 1 | 4k7 | REInnovationFootprint:TH_Resistor_1 | R1 |
| 1 | 500k | REInnovationFootprint:RV_various_lg_pad | RV1 |
| 1 | 500mA | REInnovationFootprint:TH_Fuse_Holder_5-20_CPC | F1 |
| 1 | 5V | REInnovationFootprint:Pin_Header_Straight_2x08 | P10 |
| 1 | AC_INPUT | REInnovationFootprint:TH_3W_CamdenBoss | P6 |
| 1 | ADC_0-7 | REInnovationFootprint:Pin_Header_Straight_2x08 | P13 |
| 1 | ADC_8-15 | REInnovationFootprint:Pin_Header_Straight_2x08 | P14 |
| 1 | ADC_VREF_1 | REInnovationFootprint:Pin_Header_Straight_1x02 | P16 |
| 1 | ADC_VREF_2 | REInnovationFootprint:Pin_Header_Straight_1x02 | P15 |
| 1 | BC546 | matts_components:TO92-PNP_large_pad | Q1 |
| 1 | BC556 | matts_components:TO92-PNP_large_pad | Q2 |
| 1 | BRIDGE | TH_BridgeRect_8A | D16 |
| 1 | DAC | REInnovationFootprint:Pin_Header_Straight_2x04 | P34 |
| 1 | DS18B20 | REInnovationFootprint:TO92_DS18B20 | U2 |
| 1 | EXT_CAP | REInnovationFootprint:SIL-2_LG_PAD | P2 |
| 1 | GND | REInnovationFootprint:Pin_Header_Straight_2x08 | P12 |
| 1 | GRN | REInnovationFootprint:LED-5MM_larg_pad | D12 |
| 1 | HARD_WDT | REInnovationFootprint:TH_4x1_CONN | P3 |
| 1 | LED 1-4 | REInnovationFootprint:Pin_Header_Straight_1x04 | P7 |
| 1 | LED 5-8 | REInnovationFootprint:Pin_Header_Straight_1x04 | P4 |
| 1 | LM2575 | REInnovationFootprint:TO220_5PIN | U1 |
| 1 | LM2576 | REInnovationFootprint:TO220_5PIN | U8 |
| 1 | LT_PWR | REInnovationFootprint:TH_CONN_2W_LGPAD | P8 |
| 1 | MCP4812 | REInnovationFootprint:DIP-8_300_ELL | U7 |
| 1 | ORG | REInnovationFootprint:LED-5MM_larg_pad | D14 |
| 1 | OSHW Logo | PCB_logo:OSHW_13mm | LG3 |
| 1 | PCB | PCB_120x150_WISKA | PCB1 |
| 1 | PROTOTYPING_AREA | REInnovationFootprint:PROTO_AREA_16x14 | P36 |
| 1 | PSU_10W_5V | REInnovationFootprint:TH_DCDC_PowerPac_5W_10W | PSU1 |
| 1 | RED | REInnovationFootprint:LED-5MM_larg_pad | D3 |
| 1 | REI Logo | matts_components:reinnovation_logo_15mm | LG1 |
| 1 | RPi_B | REInnovationFootprint:RPi_B_B+_MOUNTING | CPU1 |
| 1 | SPI_ADC_DAC | REInnovationFootprint:Pin_Header_Straight_1x08 | P17 |
| 1 | T4 Logo | PCB_logo:T4_32mm | LG2 |
| 1 | TLC555 | REInnovationFootprint:DIP-8__300_ELL | U3 |
| 1 | UNREG_DC | REInnovationFootprint:Pin_Header_Straight_2x03 | P30 |
| 1 | V1? | REInnovationFootprint:SIL-3_solder_connect | P9 |
| 1 | V2? | REInnovationFootprint:SIL-3_solder_connect | P31 |
| 1 | V_PWR | REInnovationFootprint:SM_3pad_SOLDER_named | P32 |
| 1 | YEL | REInnovationFootprint:LED-5MM_larg_pad | D13 |
Questions
How big is the OBeMs Pulse PCB PCB?
It measures 180 × 120 mm and has 2 copper layers, 1.6 mm thick.
What parts does the OBeMs Pulse PCB use?
140 parts, built around the MCP3008-I/P, DS18B20, LM2575T-5 and LM2576WT. 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 OBeMs Pulse PCB KiCad files?
From the johnbeardmore/oBeMS repository on GitHub, at the commit this page was made from: the board is Hardware/PCB Design/KiCAD Files/oBeMs_Pulse_PCB.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the OBeMs Pulse PCB design in my own project?
Its repository publishes it under the LGPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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