2 layers100 × 87 mm
Bertha main
Hackuarium/bioreactor
Please refer to the documentation for all useful information.
159 parts7
2 layers100 × 87 mm
Phmeter
Hackuarium/phmeter1Open source design of a battery powered pH meter
- Size
- 100 × 87 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 151
- Nets
- 125
- Pads
- 471
- Tracks, vias
- 1,135, 109
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 14 Jun 2020
- Updated
- 1 Feb 2023
Overview
Phmeter is an open-source printed circuit board by Hackuarium, from the Hackuarium/phmeter repository on GitHub. It is a 2-layer board of 100 × 87 mm with 151 parts on 125 nets, routed with 1,135 tracks and 109 vias.
It is built around the ATMEGA32U4-AU, HX711 and LM2660M, with the D16, MBR0520LT1G and ZXMS6004FF among its other parts. Its parts include 52 resistors, 37 capacitors, 19 diodes, 10 ICs and 8 connectors. It belongs with the power boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
8
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
HX711
SOP-16-40℃~+85℃ 1.4mA 10Hz、80Hz 1MHz~20MHz、11.0592MHz 2 2.6V~5.5V 20mV、40mV、80mV 24 Built-in External、Built-in SPI Support Yes SOP-16 Analog to Digital Converters (ADC) ROHSAvia SemiconAnalog To Digital Converters (ADC)
LM2660M
SOIC-8-40℃~+85℃ 1.5V~5.5V 100mA 120uA 5kHz、40kHz 6.5Ω 88% Inverted、boost converter SOIC-8 Charge Pumps ROHSTexas InstrumentsCharge Pumps
D16
SOD-123F-55℃~+150℃ 1 Independent 100uA@60V 1A 60V 700mV@1A SOD-123F Schottky Diodes ROHSDIYI Elec TechSchottky Diodes
MBR0520LT1G
UncategorisedUnknown maker
ZXMS6004FF
SOT-23F-40℃~+125℃ 1 1.3A 350mΩ 60V Active High Low Side Switch SOT-23F Power Distribution Switches ROHSDiodes IncorporatedPower Distribution Switches1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
DMP1045U
SOT-23-55℃~+150℃ 1 P-Channel 1.357nF 1.3W 12V 15.8nC@4.5V 1V 235pF 31mΩ@4.5V 5.2A 504pF P-Channel SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
README
README.mdphmeter
Open source design of a battery powered pH meter
- LCD screen (2 lines) (8 pins).
- Rotary push button (3 pins).
- RJ-12 connector to a master.
- ATMEGA32U4.
- 64 Mbit memory ISP (available version).
- 2 pumps (only use in 12 V power supply mode).
- 4 I/O 12 V.
- Battery charger.
- pH measurement.
- Elecrtical conductivity measurement.
- 2 probes temperature sensors.
BOM
Cloning the project
In order to clone it use:
git clone --recurse-submodules https://github.com/Hackuarium/phmeter
To update the submodules:
git submodule update --recursive --remote
Last update: 04/08/2021
To Do
- Check I2C communication. (created branch i2c_communication 04212022)
- Equation for pH. (in process)
- Equation for EC. (in process)
Parts
151| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4, R12, R13, R16, R25, R26, R27, R28, R29, R30, R34, R36, R37, R39, R41 +3 |
| 14 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C7, C8, C12, C15, C16, C17, C22, C26, C28, C33, C34 |
| 13 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C6, C10, C11, C19, C20, C21, C23, C27, C29, C30, C31, C32 |
| 10 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19, R20, R23, R24, R40, R42, R43, R44, R49, R55 |
| 5 | 36k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R7, R8, R9, R10 |
| 5 | MBR0520LT1G | Diode_SMD:D_SOD-123 | D3, D4, D5, D10, D14 |
| 4 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R22, R32, R33, R53 |
| 4 | BLUE | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D12, D13, D17, D18 |
| 4 | GREEN | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D7, D8, D15, D16 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | ZXMS6004 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q4, Q5 |
| 3 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R35, R38, R45 |
| 3 | 22u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C9, C24, C25 |
| 3 | YELLOW | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D9, D11, D19 |
| 2 | pHMeter:logoHackuarium | logoHackuarium, logoHackuarium | |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R46 |
| 2 | 100u | Capacitor_SMD:CP_Elec_8x10 | C36, C37 |
| 2 | 18p | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C13, C14 |
| 2 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R14, R15 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R21, R51 |
| 2 | AudioJack3_SwitchTR | Connector_Audio:Jack_3.5mm_Ledino_KB3SPRS_Horizontal | J4, J6 |
| 2 | Conn_Coaxial_Power | Connector_Coaxial:BNC_TEConnectivity_1478204_Vertical | J2, J3 |
| 2 | JP1E | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1, JP2 |
| 2 | SJ | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | J7, J8 |
| 2 | TLV6004PW | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U1, U2 |
| 1 | 0 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R31 |
| 1 | 1.5n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3339P_Vertical_HandSoldering | RV1 |
| 1 | 1N5819 | Diode_SMD:D_SOD-123 | D6 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C18 |
| 1 | 220n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C35 |
| 1 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18 |
| 1 | 3.9u | Inductor_SMD:L_Taiyo-Yuden_NR-24xx_HandSoldering | L2 |
| 1 | 51k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17 |
| 1 | 56.2k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R11 |
| 1 | 820 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | AP63203WU-7 | Package_TO_SOT_SMD:TSOT-23-6 | U5 |
| 1 | ATMEGA32U4-AU | Package_QFP:TQFP-44_10x10mm_P0.8mm | U3 |
| 1 | Bat | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | JP5 |
| 1 | Conn_02x03_Odd_Even | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J1 |
| 1 | Crystal | Crystal:Crystal_SMD_0603-2Pin_6.0x3.5mm_HandSoldering | Y1 |
| 1 | D16 | pHMeter:CD4060BM | U8 |
| 1 | DMP1045 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | HX711 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U6 |
| 1 | IO3 | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | JP6 |
| 1 | IO4 | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | JP7 |
| 1 | JUMPER-PAD-2-NC_BY_TRACE | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | SJ1 |
| 1 | LM2660M | pHMeter:LM2660M | U10 |
| 1 | MCP1703A | Package_TO_SOT_SMD:SOT-23 | U4 |
| 1 | MCP73811T | Package_TO_SOT_SMD:SOT-23-5 | U9 |
| 1 | MINI-USB-SCHIELD-32005-201 | Connector_USB:USB_Mini-B_Lumberg_2486_01_Horizontal | X1 |
| 1 | RJ12 | pHMeter:E5566-Q0LK22-L | J5 |
| 1 | Rotary_Encoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | SST26VF064B | Package_SO:SOIJ-8_5.3x5.3mm_P1.27mm | U7 |
| 1 | WC1602A | Display:WC1602A | DS1 |
| 1 | acidic | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | JP3 |
| 1 | alkaline | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | JP4 |
Questions
How big is the Phmeter PCB?
It measures 100 × 87 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Phmeter use?
151 parts, built around the ATMEGA32U4-AU, HX711, LM2660M and D16. 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 Phmeter KiCad files?
From the Hackuarium/phmeter repository on GitHub, at the commit this page was made from: the board is pcb/main/pHMeter.kicad_pcb and its schematic pcb/main/24bits ADC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Phmeter design in my own project?
Its repository states no licence, so its author keeps all rights: ask Hackuarium before reusing the design.
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