HardLabs

Phmeter

Hackuarium·phmeter·pcb/main/pHMeter.kicad_pcb

Phmeter PCB layout, top view — open source AVR/Arduino board by Hackuarium
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About the Phmeter PCB

Phmeter is an open source AVR/Arduino PCB design by Hackuarium, published on GitHub under the Custom license license. It is a 2-layer board measuring 100 × 87 mm, with 145 components from 56 distinct parts.

Its main chip is the ATMEGA32U4-AU, from the AVR/Arduino family. Other key parts include the TLV6004PW, MCP1703A, AP63203WU-7, HX711 and SST26VF064B. By type, the board carries 52 resistors, 37 capacitors, 19 diodes, 10 ICs, 8 connectors and 7 jumpers.

It belongs with the power & battery designs in this gallery.

From the project

Open source design of a battery powered pH meter

PH Meter and Conductometer that can work independently

´´´ Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 8087:0a2b Intel Corp. Bus 001 Device 006: ID 047f:0115 Plantronics, Inc. Voyager Legend Bus 001 Device 003: ID 046d:c31c Logitech, Inc. Keyboard K120 Bus 001 Device 002: ID 046d:c011 Logitech, Inc. Optical MouseMan Bus 001 Device 007: ID 1781:0c9f Multiple Vendors USBtiny Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ´´´

Main components on the Phmeter

TLV6004PWATMEGA32U4-AUMCP1703AAP63203WU-7HX711SST26VF064BD16MCP73811TLM2660M

Phmeter bill of materials (BOM)

145 components, 56 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
TLV6004PW
U1, U2
1
ATMEGA32U4-AU
U3
1
MCP1703A
U4
1
AP63203WU-7
U5
1
HX711
U6
1
SST26VF064B
U7
1
D16
U8
1
MCP73811T
U9
1
LM2660M
U10
4
ZXMS6004
Q1, Q2, Q4, Q5
1
DMP1045
Q3
1
MINI-USB-SCHIELD-32005-201
X1
1
Crystal
Y1
1
Conn_02x03_Odd_Even
J1
2
Conn_Coaxial_Power
J2, J3
2
AudioJack3_SwitchTR
J4, J6
1
RJ12
J5
2
SJ
J7, J8
1
WC1602A
DS1
2
JP1E
JP1, JP2
Show 36 more
QtyPartRefs
1
acidic
JP3
1
alkaline
JP4
1
Bat
JP5
1
IO3
JP6
1
IO4
JP7
1
10k
RV1
1
JUMPER-PAD-2-NC_BY_TRACE
SJ1
1
Rotary_Encoder_Switch
SW1
2
1N4148W
D1, D2
5
MBR0520LT1G
D3, D4, D5, D10, D14
1
1N5819
D6
4
GREEN
D7, D8, D15, D16
3
YELLOW
D9, D11, D19
4
BLUE
D12, D13, D17, D18
1
3.9u
L2
14
100n
C1, C2, C3, C7, C8, C12, C15, C16 +6
13
10u
C4, C6, C10, C11, C19, C20, C21, C23 +5
1
1.5n
C5
3
22u
C9, C24, C25
2
18p
C13, C14
1
1u
C18
1
220n
C35
2
100u
C36, C37
1
820
R1
2
100k
R2, R46
19
10k
R3, R4, R6, R12, R13, R16, R25, R26 +11
5
36k
R5, R7, R8, R9, R10
1
56.2k
R11
2
22
R14, R15
1
51k
R17
1
2k
R18
10
1k
R19, R20, R23, R24, R40, R42, R43, R44 +2
2
4.7k
R21, R51
4
100
R22, R32, R33, R53
1
0
R31
3
1M
R35, R38, R45

Phmeter design files

The KiCad project lives in the Hackuarium/phmeter repository on GitHub; these links point at the commit this page was built from.

Phmeter: common questions

What microcontroller does the Phmeter use?

The Phmeter is built around the ATMEGA32U4-AU, from the AVR/Arduino family.

How big is the Phmeter PCB?

The Phmeter measures 100 × 87 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Phmeter?

145 components, from 56 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Phmeter design files?

From the Hackuarium/phmeter repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Phmeter design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Phmeter without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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