Uno R3+ ATmega328P Microcontroller Development Board (Arduino Compatible)
Uno R3+ ATmega328P Microcontroller Development Board (Arduino Compatible)
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About this item
- A Classic, Reimagined: PTSolns Uno R3+ (the "Plus" version) microcontroller development board, based on the Microchip ATmega328P and is Arduino Uno compatible, is a modern twist on a classic widely popular board. This fully stackable board can accept any Uno Shield, providing the user with endless features and applications. The Uno R3+ is ideal for STEM education, hobby and home projects, and rapid prototyping, whether you're driving motors or LEDs, reading sensor data, or interfacing with I2C/SPI buses or RF modules.
- Plug & Play Ready: The Uno R3+ microcontroller development board arrives fully assembled with soldered headers, and comes preloaded with the Optiboot bootloader and our custom “GetStarted” sketch, so you can start using it right away—no setup required. Simply power the Uno R3+ up and begin experimenting. A description of the sketch is available in the datasheet, available on our “PTSolns Documentation Repository”.
- Packed with Features: The Uno R3+ microcontroller features a modern USB-C port, programmable and power LEDs, a reset button, a QWIIC connector, an SPI bus, a 5V I2C bus and an extra 3.3V I2C bus available on the power header row. For a complete list of features, pinout, and electrical ratings, please refer to the datasheet.
- What’s Included: Each package includes one (1) PTSolns Uno R3+ boards, fully assembled and individually QC quality checked. USB cable not included. Use a USB-C cable that supports data transfer, as some cables only provide power. To program the Uno R3+ using the Arduino IDE or other platforms, install the widely used CH340 USB driver (a quick, one-time setup). Detailed installation steps are provided in the datasheet.
- PTSolns Customer Support & Resources: We’re here to help. Contact PTSolns support for assistance or technical questions. Every PTSolns product is backed by our comprehensive resource library, including datasheets, schematics, 3D models, Fritzing files, and tutorials. All supporting material is freely available on our “PTSolns Documentation Repository”.
Product Description
Features of the Uno R3+ Microcontroller Development Board
- USB-C Port.
- Reset Button.
- Pinout of I2C bus (SDA/SCL) at 5V logic.
- Power LED jumper disconnect on the back.
- LED array: Power, Pin 13, TX, RX.
- Canadian designed!
- QWIIC connect for I2C bus (SDA/SCL) at 3.3V logic.
- Genuine ATmega328P IC, through-hole (THT) version.
- Pinout of I2C bus (SDA/SCL) at 3.3V logic.
- Four mounting holes.
- Power barrel.
Endless Possible Applications
Add any Uno Shield to the fully stackable Uno R3+. In this example an RTC MicroSD Shield is stacked. The user can also add the Proto-Shield, the NRF-Shield, the Interface-Shield and so many more!
Check out our shields
- Proto-Shield
- NRF-Shield
- Interface-Shield
- RTC MicroSD Shield
- LoRa Shield (coming soon)
- ... and more coming!
Pinout Diagram of the Uno R3+ Microcontroller Development Board
Ready-to-use out-of-the-box ... Fully assembled, bootloader burned, and "GetStarted" sketch uploaded!
- Fully assembled: The Uno R3+ is fully assembled with male headers soldered in place. With the modern USB-C Port onboard, getting started is as easy as plugging it in.
- Experiment ready: The Uno R3+ has bootloader burned, and our custom "GetStarted" sketch has been uploaded.
- Test 1: Onboard LED (Pin 13) Blink Unique Pattern. Observe a blinking pattern on the onboard LED.
- Test 2: Onboard LED (Pin 13) Blink Reset Pattern. Observe a different short blinking pattern upon pressing RST.
- Test 3: I2C Scanner (Image with the circled "3" above). Connect a peripheral via I2C and automatically scan its address. View the results in Serial Monitor on baud 9600 (See NOTE below).
- Test 4: Pin 9 Fade (Image with the circled "2" above). Connect an external LED and a resistor from Pin 9 to ground and observe the classic "Fade" example.
- Test 5: Analog A0 Read. Connect a wire to the A0 Pin and observe the readout on the Serial Monitor on baud 9600 (See NOTE below).
Technical Specifications
| Input voltage on USB-C | 5 V |
| Input voltage on Vin Pin | 7-12 V |
| Current draw on a GPIO | 20 mA |
| Max current draw on all GPIOs | 200 mA (IF OPERATING in “Stable” CONDITIONS. See Datasheet for important details.) |
| Max current draw on 3.3 V pin | 800 mA (IF OPERATING in “Stable” CONDITIONS. See Datasheet for important details). |
| Max current draw on 5 V pin | 800 mA (IF OPERATING in “Stable” CONDITIONS. See Datasheet for important details). |
| Microcontroller | ATmega328P, AVR 8-bit CPU, Up to 20 MHz, Flash Memory: 32 KB, SRAM: 2 KB, EEPROM: 1 KB, Peripherals I/O Pins: 23, ADC Channels: 6 ,ADC Resolution: 10-bit, PWM Channels: 6, Timers: 3 (2x 8-bit, 1x 16-bit), USART: 1, SPI: 1, I2C: 1 |
| Length | 68.6 mm |
| Width | 53.3 mm |
| Weight | 24 g |
| Material | Lead free HASL-RoHS surface finish, FR-4 base |
| Mounting Holes | 4x each with 1.651 mm diameter, see mounting holes diagram for spacing. |
| USB-C NOTE | Please use a USB-C cable that can support data transfer. Not all USB-C cables support data transfer, and can only power a device but not program it. |
Other Names
- Uno R3+
- Uno R3 +
- Uno R3 Plus
- PTS-00194-101
- PTS-00194-201
Customer Reviews
The board works! Wrote up a little PWM fading sketch to grease my rusty gears and test out the board. I do like the fact that it has a usb c, makes working with these things that much more convenient. I like that PTS has their own manual on their website. I would appreciate more material there, but it's an Arduino inspired dev board, so there is plenty of information about how to use something like this on the internet. I appreciate that in the manual they rename MISO and MOSI. It shows that they have a progressive mindset. The board works fine, and it costs auite a bit less than the original Arduino Uno at the time of writing, but more than other clones, and while I can say that the quality of this board is better than a lot of others (printing, finish, etc), if I am looking to do a project, the furst thing I am looking for is cheap electronics, for 22 CAD, this bad boy does not fall into that category, unfortunately. I personally didn't have to install any drivers maybe because I have had to do that for previous boards, but if you are just starting this might throw you off a bit.
If this was my first board, I would be happy with it for sure, I would want the customer support, and I would want the higher quality printing and the manuals on the website, all of which cost money, so I do appreciate this board for what it is.
Pros:
- Works out of the box without needing to install headers or mess with settings. I just plugged it in, picked Arduino Uno in the IDE, and it started working immediately.
- The USB-C port is way more convenient than the old USB-B connectors you usually get on boards like this. Less bulky, and I already have a bunch of USB-C cables.
- Comes with pre-soldered headers so it's stack-ready for shields. I added an RTC shield and it worked no problem.
- Has a socketed ATmega328P chip which is nice if you ever want to swap it out or use it in a breadboard project later.
Cons:
- There's not a ton of beginner-friendly documentation unless you already know what you're doing. Would be great to see more step-by-step guides.
Current title: PTSolns UNO R3+ ATmega328P Microcontroller Development Board (Arduino Compatible)
This is an Arduino UNO board, but with a USB-C connector and a Qwiic connector (a SparkFun thing making I2C connections easier). The board is less expensive than the similar SparkFun one.
A good value, and should be usable by anybody experimenting with Arduinos.
Good little board. Seems to be well made.
I like that it has:
- a socketted chip,
- a genuine CH340 USB chipset,
- good documentation and specs,
- USB C port
I'm not a fan of the black solder mask but that is a personal preference.
Also wish it came with a USB data cable. I think a lot of people will get tripped up by trying to use a cable that does not have data pins. The board will power up but they won't see it on their computers and think the board is broken.
Like any other Arduino board I've used. Works fine with Arduino IDE (though you must download the CH340 driver) driver.
Documentation is a bit sparse, but you can find it online if you're persistent.
Can't complain. An Arduino board is an Arduino board.