HardLabs

Measure Battery Level

node9909·Graduation-project-files·Hardware/Mesure Battery level/Measure Battery Level.kicad_pcb

Measure Battery Level PCB layout, top view — open source AVR/Arduino board by node9909

About the Measure Battery Level PCB

Measure Battery Level is an open source AVR/Arduino PCB design by node9909, published on GitHub. It is a 2-layer board measuring 79 × 38.6 mm, with 57 components from 42 distinct parts.

Its main chip is the ATtiny85-20PU, from the AVR/Arduino family. Other key parts include the ds2745_oliver, MCP73831, TPS61090, MCP1703A-3302_SOT23 and AP9101C. By type, the board carries 20 resistors, 13 connectors, 10 capacitors, 7 ICs, 4 diodes and 1 switch.

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

From the project

design of a HD-SEMG system, using ads1298, Arduino DUE, ST32F4, INA333 adn AD8232

The hypothesis of the project was ”Can the AMAC performance level be improved in direct controlled (DC) myoelectric systems by exactly locating the location where the patient has the most amount of cover the agonist and antagonist of the residual limb during different hand gestures’’. The goal was to develop a device that can be used to confirm this hypothesis, the could be achieved by measuring the muscle potentials over the residual limb during different hand gestures (HD-SEMG recording)

Main components on the Measure Battery Level

ds2745_oliverMCP73831TPS61090MCP1703A-3302_SOT23ATtiny85-20PUAP9101CECH8693R

Measure Battery Level bill of materials (BOM)

57 components, 42 distinct parts.

QtyPartRefs
1
ds2745_oliver
U1
1
MCP73831
U2
1
TPS61090
U3
1
MCP1703A-3302_SOT23
U4
1
ATtiny85-20PU
U5
1
AP9101C
U6
1
ECH8693R
U7
1
USB4065-XX-X_REVA
J1
2
CONN_02JST-PTH-2
J2, J14
1
Debug header
J5
3
POWER_OUT
J7, J10, J12
1
Conn_01x03
J9
1
Conn_02x04_Odd_Even
J11
1
Conn_02x03_Odd_Even
J13
3
Conn_01x01
J15, J16, J17
1
R_POT_TRIM
RV1
1
Switch_SW_SPDT
SW1
1
bat charging
D1
1
battery full
D2
1
LED_AT
D3
Show 22 more
QtyPartRefs
1
LED
D4
1
6.8uH
L1
1
100nF
C1
3
10uF
C2, C3, C4
1
0.1uF
C5
1
C
C6
2
1uF
C8, C9
1
2.2uF
C10
1
100UF(tan)
C11
1
500R
R1
1
1000R
R2
4
1K
R3, R5, R12, R17
1
Rsns
R4
2
150R
R6, R7
1
Charge Current
R8
3
R
R9, R20, R21
1
1.8MR
R10
1
330k
R11
1
2MOhm
R13
1
10K
R14
1
1.8Mohm
R15
2
4.7K
R18, R19

Measure Battery Level design files

The KiCad project lives in the node9909/Graduation-project-files repository on GitHub; these links point at the commit this page was built from.

Measure Battery Level: common questions

What microcontroller does the Measure Battery Level use?

The Measure Battery Level is built around the ATtiny85-20PU, from the AVR/Arduino family.

How big is the Measure Battery Level PCB?

The Measure Battery Level measures 79 × 38.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Measure Battery Level?

57 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Measure Battery Level design files?

From the node9909/Graduation-project-files repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Measure Battery Level design in my own project?

The repository has no license, so all rights stay with node9909. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Measure Battery Level 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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