Discontinued 0.9 5v To 5v Dc-dc Step-up Power Module Voltage Boost Converter Board 1.5v 1.8v 2.5v 3v 3.3v 3.7v 4.2v To 5vThis is dc to dc boost converter module which can be used to powerup any 5v device from very low voltage like 1v or 2v to 5v. Features: Supermini DC DC voltage booster module with standard 2. 54mm pitch hole 0. 9 5V wide voltage input and 5V fixed voltage and maximum 480mA current output Working Frequency: 150KHz, Typical Conversion Efficiency: 85% Board Size: 11 X 10. 5 X 7. 5mm 0. 43 X 0. 41 X 0. 30inch(L*W*H) Applications Battery powered equipment

3V Pin 150 mA

1 * Cabel wire

(Open source firmware that runs on an Arduino UNO that turns G-code commands into stepper signals)

where TTL signals are converted to RS232 levels and RS232 levels are converted to TTL levels

I2C and SPI pins from the 40pin header onto a solderless breadboard

and NC (Normally Closed) relay pins for each relay

MP3/MP4 player

the "OP" time is on

then you must connect it to an externally powered USB hub

0″ Nextion Enhanced HMI Display

This Lithium-ion battery protection PCB protects single Lithium-ion batteries

thereby offering the convenience of not having to remove the chips from the circuit board