The schematic contains the AD9951 DDS chip and an ATMega328, 168 or whatsoever microcontroller. Please see my QRP-shop for further details! Schematic If for example an 3.3V display should be applied (like the Nokia 5110 LCD) resistors of about 10k must be put into the data lines.Ī (basic) software can be downloaded from my Github repo, a PCB is available as well as a ready-to-run module. The module runs on 5V so that most displays can be used. So the user can use a wide variety of displays (OLED oder LCD DOT matrix for example, interface analog sensors or use digital input or put pins as available. Most of the MCU’s ports are accessible for the user (except from PD7 (AD9951 RESET) and PB0, PB1 and PB2 that serve as SPI lines). It carries an ATMega168 (or ATMega8, ATMega88 or ATMega328 alternatively, depending on the complexity of the software used) on board. The module is designed for output frequencies in the range between 1 and 60MHz. This article describes a versatile AD9951 frequency synthesizer for use as VFO in a homebrew transceiver project.
0 Comments
Leave a Reply. |