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bidirectional tester

c3am

A low cost single cell battery capacity tester based on using the ch32v003.

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Main components

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Part NumberDescription
ADS1115IDGSUltra-Small, Low-Power, I2C-Compatible, 860-SPS, 16-Bit ADCs With Internal Reference, Oscillator, and Programmable Comparator, VSSOP-10
CH32V003FxUxCH32V003 series are industrial-grade general-purpose microcontrollers designed based on 32-bit RISC-V instruction set and architecture. It adopts QingKe V2A core, RV32EC instruction set, and supports 2 levels of interrupt nesting. The series are mounted with rich peripheral interfaces and function modules. Its internal organizational structure meets the low-cost and low-power embedded application scenarios.
INA181Bidirectional, Low- and High-Side Voltage Output, Current-Sense Amplifier, SOT-23-6
REF30202.048V 50-ppm/°C Max, 50-μA, CMOS Voltage Reference, SOT-23-3
IR2101High and Low Side Driver, 600V, 210/360mA, PDIP-8/SOIC-8
AMS1117-5.01A Low Dropout regulator, positive, 5.0V fixed output, SOT-223
DS1307Z+64 x 8, Serial, I2C Real-time clock, 4.5V to 5.5V VCC, 0°C to +70°C, SOIC-8

bidirectional tester schematic

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bidirectional tester board layout

bidirectional tester PCB render

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