Funktionsgenerator
WIP: Funktionsgenerator mit Atmega328 und TFT Display
GPL-3.0 License
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Ecosystems:
Arduino
Funktionsgenerator
Funktionsgenerator basierend auf dem DDS AD9833 mit einem Atmega328PB (Arduino) als Mikrocontroller und einem 1,8" TFT Display
Function generator with AD9833 DDS, Atmega328PB Microcontroller and a 1.8" TFT Display
Bill of Materials
AD9833 & Controller Board
| Qty | Value | Device | Package | Description | Vendor | Price |
|---|---|---|---|---|---|---|
| 1 | KMR-1.8 SPI ST7735R | 1.8" TFT Display | eBay | 2,88 | ||
| 1 | SPDT | Toggle switch for Front Panel Mount | eBay | 3,00 | ||
| 1 | KY-040 | Rotary Encoder mit Taster (Ausfhrung mit Gewinde am Schaft und Befestigungsmutter) | eBay | 4 | ||
| 1 | 1,3k | Resistor | 0603 | 0,01 | ||
| 1 | 620 | Resistor | 0603 | 0,01 | ||
| 8 | 100n | Capacitor | 0603 | 0,01 | ||
| 4 | 10k | Resistor | 0603 | 0,01 | ||
| 1 | 10n | Capacitor | 0603 | 0,01 | ||
| 1 | 16Mhz | Crystal | SMD HC-49/U-S | 16.000MHz QCS HC49/U-S SMD Crystal 16MHz, 20ppm, 2-Pin HC-49/U-S SMD | RS Components | 0,25 |
| 1 | 1k | Potentiometer | for Front Panel Mount | RS Components | 5,88 | |
| 1 | 25k | Potentiometer | for Front Panel Mount | RS Components | 5,85 | |
| 2 | 22p | Capacitor | 0603 | 0,01 | ||
| 1 | 24.0Mhz | CFPS-72 | 7 x 5 mm SMD | RS Components | 1,25 | |
| 1 | 330n | Capacitor | 0603 | 0,01 | ||
| 1 | AD9833BRMZ | MSOP-10 | Programmable Waveform Generator | Mouser or eBay | 7,79 | |
| 1 | ATMEGA328PB-AU | TQFP-32 | ATMEL - ATMEGA328PB-AU - MCU, 8BIT, ATMEGA, 20MHZ | RS Components | 1,61 | |
| 1 | 50Ohm | BNC Connector | for Front Panel Mount | RS Components | 2,15 | |
| 1 | 10u | EEEFK1C100AR | Panasonic B | Panasonic 10uF 16 Vdc SMD Electrolytic Capacitor | RS Components | 0,45 |
| 1 | 47u | Capacitor | Case D | Polarized Tantal Capacitor 10Vdc | RS Components | 0,36 |
| 2 | LM318D | SO-08 | OpAmp | RS Components | 1,64 | |
| 1 | TLE4270-2D | TO-252 | LDO Voltage Regulator, 850mA, 5 V | RS Components | 2,44 |
Power Supply Board
| Qty | Value | Device | Package | Description | Vendor | Price |
|---|---|---|---|---|---|---|
| 2 | 100n | Capacitor | 0603 | |||
| 1 | 2x12V 6VA | Transformer | PCB Mount | RS Components | 5,75 | |
| 2 | 100u | EEEFT1C101AR | Panasonic C | Panasonic 100uF 16 Vdc SMD Electrolytic Capacitor | RS Components | 0,35 |
| 2 | 1000u/35V | Electrolyic Capacitor | E5-13 | RS Components | 0,46 | |
| 1 | MB6S | SOIC-4 | Bridge Rectifier | RS Components | 0,35 | |
| 1 | +12V | MC7812 | DPAK | Positive Voltage Regulator | RS Components | 0,70 |
| 1 | -12V | MC79M12 | DPAK | Netgative Voltage Regulator | RS Components | 0,65 |
Pin Connectors
You will need several pin headers and connectors , 2x2 Pin, 2x3 Pin, 1x 5 Pin. You could use any connector with a pitch of 0,1"/2,54mm either regular pinheaders or Molex KK 254 Connectors.
Images
This work is based on this howto from allaboutcircuits.com