چهار شنبه,۱۵ تير ماه ۱۴۰۱مطابق با
۶ ذيحجه ۱۴۴۳ هجرى قمرى

DDS Signal Generator (Device Voltages)
DDS Signal Generator (about 12€ aliexpress)
AVR ATMEL ATmega16A chip, clocked with 16MHz
Standard HD44780-based 2×16 LCD module
R2R DAC made of simple resistors
LM358N low power dual op amplifier
Device requires voltages: +5V, -12V, +12V, GND. -12V and +12V.
Not good for me (Isfahani) Where can I find a small and simple power supply.
For awhile I used a PC ATX PSU. It is too large and took place.
Now I build a power supply using by two small boards
MC34063A positive voltage negative voltage module 3.6v-36v reverse voltage
and MT3608 DC-DC Step Up or DC/DC buck module 12V turn 5V3.3V LCD power supply
together about 4.5$
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Programming of the ATMEGA16 with usbtiny programmer
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