Bill of material
Overview of parts
Membrane Pump
It is necessary to use an air pump which is stabilized and has a known airflow or use an airflow meter. We tested with Thomas 1410V (12V - ~300€) or 2002 (3.3V - ~150€) Diaphragm Pumps.
The airflow is mandatory for correct calculation and has to be adjusted in the python script - we're happy to help you out here, just contact us.
Download 3D Printable files (A-E)
STL for 3D Printing (SLA or FDM) github repository - printing material ~10€
A-E:
Print on any 3d printer or send to any service provider. Use black filament / resin. If possible, use flex filament or mix resin with flex resin. 200g Resin / FDM ~ $5-$10
- 3D printing service is more expansive (~$100)
Download PCB / Gerber Files for bcMeter 12V or 5V (F)
We have a small stock of PCBs available, just contact us, if interested.
(find gerber files for PCB fabrication on bcmeter.org) ~$25
bcMeter general purpose PCB for 12V and large pumps
bcMeter SMD PCB for 5V and smaller pumps
Bill of Material for general purpose PCB (THT components & 12V DC Barrel Jack) (G)
Link to mouser basket for one-click-order contains the following parts:
| Mfr. No | Manufacturer | Description | Order Qty. | Price (EUR) | Ext.: (EUR) |
| 110991027 | Seeed Studio | Development Boards & Kits - ARM Seeed Rasp Pi Zero W Barebones Kit | 1 | 21,48 € | 21,48 € |
| MCP3426A6-E/MS | Microchip | Analog to Digital Converters - ADC 16bit deltasigma ADC dual channel 15sps | 1 | 2,35 € | 2,35 € |
| IRL 81A | Osram Opto Semiconductor | Infrared Emitters Infrared 850nm Half Angle +/-12DEG | 2 | 0,881 € | 1,76 € |
| LPT 80A | Osram Opto Semiconductor | Standard LEDs - SMD PHOTOTRANSISTOR | 2 | 0,762 € | 1,52 € |
| RCER72A103K0K1H03B | Murata | Multilayer Ceramic Capacitors MLCC - Leaded 0.01uF 100volts X7R LS=5mm +/-10% | 3 | 0,474 € | 1,42 € |
| TAP334M035SCS | AVX | Tantalum Capacitors - Solid Leaded 35V 0.33uF 20% ESR=1 5 Ohm | 2 | 0,551 € | 1,10 € |
| CON-SOCJ-2155 | Gravitech | DC Power Connectors Power Jack/Connector 2.1mm x 5.5mm | 1 | 1,01 € | 1,01 € |
| K102K15X7RF53H5G | Vishay | Multilayer Ceramic Capacitors MLCC - Leaded 50V 1nF 10% X7R e3 Auto | 3 | 0,313 € | 0,94 € |
| RDEC71E106K2M1H03A | Murata | Multilayer Ceramic Capacitors MLCC - Leaded 10uF 25volts X7S 10% | 1 | 0,864 € | 0,86 € |
| RDER71E104K0M1H03A | Murata | Multilayer Ceramic Capacitors MLCC - Leaded 0.1uF 25volts X7R 10 % | 2 | 0,398 € | 0,80 € |
| L7805CV | STMicroelectronics | Linear Voltage Regulators 5.0V 1.0A Positive | 1 | 0,567 € | 0,57 € |
| L7809CV | STMicroelectronics | Linear Voltage Regulators 9.0V 1.0A Positive | 1 | 0,415 € | 0,42 € |
| MMBT3904-G | Comchip Technology | Bipolar Transistors - BJT VCEO=40V IC=200mA | 1 | 0,186 € | 0,19 € |
| MBA02040C2261FC100 | Vishay | Metal Film Resistors - Through Hole .4watt 2.26Kohms 1% 1/8watt body size | 2 | 0,093 € | 0,19 € |
| CFR25SJT-26-10K | YAGEO | Carbon Film Resistors - Through Hole 10 kOhms 250 mW 5% - 350/ +500 PPM / C | 1 | 0,085 € | 0,09 € |
| OM1015E-R58 | Ohmite | Carbon Film Resistors - Through Hole 100 Ohm 1W 5% 500 Vo lt | 1 | 0,085 € | 0,09 € |
| 34,79 | |||||
Bill of Material for the small PCB incl. optional Honeywell Airflow Meter (G)
Mouser Basket - incl. Airflow Meter - this is optional. Delete this item, if not wanted or needed.
| Mfr. No | Manufacturer | Description | Order Qty. | Price (EUR) | Ext.: (EUR) |
|---|---|---|---|---|---|
| C0805C104K5RAC7411 | KEMET | Multilayer Ceramic Capacitors MLCC - SMD/SMT 50V 0.1uF X7R 0805 10% | 2 | 0,11 € | 0,22 € |
| 885382207006 | Wurth Elektronik | Multilayer Ceramic Capacitors MLCC - SMD/SMT WCAP-CSST 0805 10nF 10% 50VDC | 3 | 0,085 € | 0,26 € |
| 885382207004 | Wurth Elektronik | Multilayer Ceramic Capacitors MLCC - SMD/SMT WCAP-CSST 0805 1nF 10% 50VDC | 3 | 0,085 € | 0,26 € |
| IRL 81A | Osram Opto Semiconductor | Infrared Emitters Infrared 850nm Half Angle +/-12DEG | 2 | 0,881 € | 1,76 € |
| LPT 80A | Osram Opto Semiconductor | Standard LEDs - SMD PHOTOTRANSISTOR | 2 | 0,762 € | 1,52 € |
| 110991027 | Seeed Studio | Development Boards & Kits - ARM Seeed Rasp Pi Zero W Barebones Kit | 1 | 21,48 € | 21,48 € |
| 2222 | Adafruit | Adafruit Accessories GPIO Header for Raspberry Pi A+/B+/Pi 2/Pi 3/Pi 4/Zero - 2x20 Female Header | 1 | 1,27 € | 1,27 € |
| HAFBLF0750CAAX5 | Honeywell | !OPTIONAL! Flow Sensors 750 sccm,Long Port Analog,Fast Mt, 5V | 1 | 87,99 € | 87,99 € |
| MMBT3904_R2_00001 | Panjit | Bipolar Transistors - BJT /S1A/TR/13"/HF/12K/SOT-23/TRA/SOT/GPT-03TN/GPT03-QI15/PJ/// | 1 | 0,093 € | 0,09 € |
| MCP3426A2-E/MS | Microchip | Analog to Digital Converters - ADC 16bit deltasigma ADC dual channel 15sps | 1 | 2,35 € | 2,35 € |
| CRCW08052K21FKEAC | Vishay | Thick Film Resistors - SMD 1/8Watt 2.21Kohms 1% Commercial Use | 2 | 0,136 € | 0,27 € |
| RCG0805100RJNEA | Vishay | Thick Film Resistors - SMD .125watt 100ohms 5% 0805 200ppm | 1 | 0,085 € | 0,09 € |
| CRCW080510K0FKEAC | Vishay | Thick Film Resistors - SMD 1/8Watt 10Kohms 1% C ommercial Use | 1 | 0,085 € | 0,09 € |
| Merchandise: | 117,65 € | ||||
| Delivery Charge: | 0,00 € | ||||
| Back-order Delivery: | 0,00 € |
Filter Paper (H)
Pallflex T60A20 Filter Paper was used during developement and is sadly discontinued. We have a small stock of T60A20 left, so we may send you some material.
We're testing the better available https://www.amazon.com/7194-Non-Heat-Pallflex-Tissuquartz-Laboratory/dp/B0731SG18R.
Or you may send us a sample of your filter paper and we happily calibrate bcMeter with it!
Amazon Links for additional Material (I)
Component locations on PCB
See on Assembly#Component_locations