If you’re a person like me that gets exhausted turning knobs all day, the DS3502 is just the ticket to calm all your knob-turning related troubles. Instead of having to turn knobs with your HANDS like an ANIMAL, the DS3502 I2C Digital Potentiometer allows you to let your microcontroller adjust the resistance for you! Now you can free your hands to spin your fidget spinner or eat a slice of pizza while you’re on the phone. Talking over an I2C bus, your Arduino, CircuitPython board, or Python powered computer can talk to the DS3502 and tell it to vary its resistance at your beck and call.
Working with the DS3502 is easy as an I2C controllable pie. We’ve put it on a breakout PCB with the required support circuitry and SparkFun qwiic compatible STEMMA QT connectors to allow you to use it with other similarly equipped boards without needing to solder. QT Cable is not included, but we have a variety in the shop.
This handy little helper can work with 3.3V or 5V micros, so it’s ready to get to work with a range of development boards. The DS3502 is a simple chip that does one thing well and so it’s very easy to work with. Wire it up and set the value for the wiper, that’s it. To make things even easier we’ve gone and written Arduino and CircuitPython/Python 3 drivers to simplify interfacing with your new knob-replacing friend.
“OK, this thing sounds great. Give me some details” you say. OK then, here you go: The wiper value is a 7-bit number meaning there are 128 possible levels of resistance to choose from 0-10K ohms. You can even set a default value that will be set on power up. The analog voltage controlled can be from 4.5-15.5V. Additionally you can use the address jumpers or pins to set the I2C address to one of four values, allowing you to have four DS3502s on the same I2C bus.
Technical Details
- Diagrams, libraries, code examples, datasheets, and more are all in the learning tutorial
- Product Dimensions: 25.4mm x 17.7mm x 4.6mm / 1.0″ x 0.7″ x 0.2″
- Product Weight: 1.6g / 0.1oz
Fast Shipping and Professional Packaging
Because of our long-standing partnership with UPS, FedEx, DHL and many other leading global carriers, we can provide various shipping options. Our warehouse staff is highly trained and will pack the items according to our exact and precise specifications. Before shipping, your goods will be thoroughly examined and secured. We deliver to thousands of customers every day from all over the world. This is a sign of our dedication to being the largest online retailer worldwide. There are distribution centers as well as warehouses located in Europe as well as the USA.
Note: Orders with more than one product are assigned a specific processing period dependent on the particular item.
Before shipping, we will examine the items ordered carefully before shipping. The majority of orders are shipped within 48 hours. The time to deliver varies from 3-7 days.
Returns
The stock is constantly changing and cannot be fully controlled by us due to the involvement of many parties including the factory and our warehouse. This means that the actual stock could alter at any time. Be aware that it is possible that your order could be out of stock after you have made the order.
Our policy lasts thirty days. If you haven't received your item within 30 days, we're unable to offer the option of a refund or exchange.
You are able to return an item when it's unopened and is in the same condition as when you first received it. It should also be returned in its original packaging.
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