Electronic micro Load tester with 18650 battery charger and oled screen fits 1590b case
Electronic load tester with 18650 battery charger and 5V DC-DC boost.
Using arduino Leonardo micro controller and 16bit ADC for precise current reading from the INA214 current sensor.
Control load current up to 2A with 500uA steps with the rotary encoder.
Current displayed on the OLED 128x32 display via I2C protocol.
You can also write custom discharge software with the Arduino library.
Overtemp protection with and NTC temp sensor and optional hookup for a cooling van.
Size is based on hammond 1590b case where mosfet and temp sensor are mounted on the cast aluminum case for cooling.
Tech Specs;
Current range: 0-2A, 500uA steps.
Arduino compatible micro: ATmega32U4-AU
Current sensor: INA214
ADC: ADS1110 - 16bit precision - read current
DAC: MCP4725 - 12bit precision - set current
Battery power: 1 x 18650 / USB power
Over temp protection with NTC probe: 10K NTC Probe in TO-220 package
Optional cooling fan hookup for 5V dc Fan.
OLED display: 128x32 resolution
Case: Hammong 1590b case
Build instruction;
Need solder iron and need to be able to work with 0603 SMD components, either solder directly or use reflow oven. Familiar with Arduino IDE and programming language. Small drill required for mouting Mosfet and NTC probe to case.
Electronic micro Load tester with 18650 battery charger and oled screen fits 1590b case
*PCBWay community is a shared platform and we are not responsible for any design issues.
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