Summary of DS1669 Digital Potmeter UP/DOWN using microcontroller
This project enables control of a Dallas DS1669 digital potentiometer using a standard analog potmeter via an AT90S1200 microcontroller, eliminating the delay associated with push-button controls.
Parts used in the DS1669 Digital Control:
- AT90S1200-12PI
- DS1669 (Dallas)
- 78L05
- 1N4007
- 4MHz X-tal
- 27pf capacitors
- 22pF capacitor
- 47uF/16V capacitor
- 100n polycarbonate capacitor
- 100n multilayer capacitors
- 100 ohm resistor
- 10k ohm resistor
- 820 ohm resistor
- 100k trimpot
- 10k lin. potmeter
1x DS1669 (Dallas)
1x 78L05
2x 1N4007
1x 4MHz X-tal
2x 27pf
1x 22pF
1x 47uF/16V
1x 100n polycarbonate
3x 100n multilayer
1x 100 ohm
1x 10k ohm
1x 820 ohm
1x 100k trimpot
1x 10k lin. potmete
DS1669 Digital Control:
With this circuit you’re able to control a Dallas DS1669 digipot with a normal potmeter. Usually you control the DS1669’s wiper with 2 push buttons (up/down) Disadvantage: Slight delay.
The software….
Here you can download the datasheet of the DS1669.
Here the hex-dump (GNU). You can upload this hex data into the AVR with this programmer.
For more detail: DS1669 Digital Potmeter UP/DOWN using microcontroller
- What is the primary function of this circuit?
This circuit allows you to control a Dallas DS1669 digipot with a normal potmeter. - How does this method compare to using push buttons?
Unlike the usual two-push-button method which has a slight delay, this approach uses a potmeter for control. - Which microcontroller is used in the project?
The project utilizes an AT90S1200-12PI microcontroller. - Can I download the software for this project?
Yes, you can download the hex-dump (GNU) to upload into the AVR with a programmer. - Where can I find the datasheet for the DS1669?
The datasheet for the DS1669 is available for download as mentioned in the text. - Does this project require a specific voltage regulator?
The part list includes a 78L05 component for the circuit. - What type of clock source is required?
A 4MHz X-tal is used as the clock source in this design. - Is there a more detailed guide available?
More details are provided under the topic DS1669 Digital Potmeter UP/DOWN using microcontroller.
