Lonely Binary 3-Pack ESP32-S3 N16R8 Development Board + 3 Terminal Bases | in screw, screwless and 2.54mm expansion types, with 16MB Flash, 8MB PSRAM, onboard antenna, for Arduino IDE and MicroPython

When you move beyond basic LED blinking and start working on memory-intensive projects like local AI processing, computer vision, or complex web servers, the standard ESP32 boards quickly hit their limits. I picked up this Lonely Binary ESP32-S3 N16R8 3-pack for some custom hardware integration for my security business, and these "Gold Edition" boards are significantly more capable than your average dev kit. Memory That Actually Scales The "N16R8" spec is the star of the show here. With 16MB of Flash and a massive 8MB of PSRAM, you finally have the overhead required for high-resolution displays or running TinyML models at the edge. I’ve been using these to prototype custom sensor nodes that require a bit of local data processing before hitting the network, and having that extra PSRAM means I don't have to constantly fight with heap memory management or stack overflows. Industrial Build Quality The "Gold Edition" isn’t just a marketing name; the ENIG (Electroless Nickel Immersion Gold) finish on the pads makes a noticeable difference. Solderability: The pads take solder beautifully, which is essential when you’re hand-soldering headers or attaching sensors for a prototype. Durability: The finish provides better oxidation resistance, which is a huge plus if you’re deploying these in environments like a vehicle or an outdoor enclosure where humidity can be an issue. Pin Access: The expansion headers are clearly labeled and the layout is breadboard-friendly, making the transition from a "bench test" to a permanent enclosure much smoother. Performance & Integration The ESP32-S3's dual-core processor and native USB support make it a joy to develop for. These boards integrated perfectly with the ESP-IDF and Arduino IDEs without any driver headaches. The vector instructions on the S3 chip really shine here—if you are doing any signal processing or AI-related tasks, the speed increase over the standard ESP32 is immediately apparent. Value for Money Getting three of these high-spec boards in one kit is a fantastic value. Often, you find "N16R8" boards sold individually at a premium, so having a 3-pack allows you to have one for active development, one for a permanent project, and one as a spare for "what-if" testing. Final Thoughts If you’re a professional developer or a high-level hobbyist working on IoT, security hardware, or AI, don't waste your time with lower-spec boards. This Lonely Binary kit provides the stability and memory headroom needed for serious projects. It’s a rock-solid, high-performance rucksack for your code.

Excellent product with excellent support. There are other reviews mentioning if you need the 5V from the OTG/USB side, it is indeed throttled with a diode. I contacted support about this and they gave with a warning which component to jump in order to achieve my goals with the S3 having USB host capabilities via the OTG port.

These units work well, but are narrower than most of the available ESP32's. The documentation is well made. Highly recommend if you need the narrower form factor.

I bought all 3 of these boards. All boards use the same ESP32-S3. The boards are great except for the push button to insert a wire. The problem with that board is it is difficult to make sure you are connecting to the pin wanted based on the silk screen which is not 100% under the insertion hole. Though a bit of a pain, it is really a minor issue. What is major issue is the output power on it's 3.3v and 5v lines using a usb-c cable connected to my 3.0 usb port on my computer (computer has a very big and strong power supply). First off all, this esp32-s3 is very power hunger. Connecting just the board (not plugged into the breadboard) and applying power via my computers 3.0 usb port, the measure voltage on the 3.3v line was 3.1 to 3.2V. The measured voltage on the 5v line was 4.5 volts. When I applied a load (Real time clock, SD card), the voltage drop to 3.0V and the 5v line dropped to 4.0 volts. This was the case for all 3 ESP32-S3 which came with the order. In my judgement, Lonely Binary's ESP32-S3 Golden edition is not suited for anything other than software processing (video, ect). In my analysis and testing, the ESP32-S3 from Lonely Binary is not able to reliability handle external hardware. My external modules were having difficultly staying active with the low voltage from the ESP> The whole setup is even worse when I connect my 4.0" LCD display. I can get the 3.0v back up to 3.2V if I feed the usb connection to the ESP32-S3 with a 2A wall charger but then I have no computer access thus no way to debug my code using the standard print statements. I was able to continue with my project by using a traditional breadboard and placing everything on that breadboard including the ESP. I then used a usb-c breakout board to connect to the wall charger and used that 5 volt source to power a fixed 3.3v LM1117 regulator module for a fixed 3.3v output at 1A. I used this 3.3v source to power all of my modules and LCD. I did tied the grounds together. I did not use the ESP's 3.3v or 5v line. I ended up having to use the external 5V wall charger because Lonely Binaries ESP32-S3 5V line did was not able to put out enough voltage to turn on the LM1117. This is a follow up to the above review. First of all the voltage issue with the 3 ESP32-S3 N16R8 is still the same. The manufacture responded quickly and the issues were discussed. It is my personal opinion these 3 boards are suffering from a bad batch of regulators. This kind of thing can happen especially if bought over seas. I have purchased a few other high power esp32-S3 and C6 and found Lonely Binary's S3 the easiest to use of all the ones I have used. For one thing (very important thing) the reset and boot buttons are on the opposite side of the board. Everyone else has them side by side and I have to use 2 pencil erasures just to use those buttons due to my fat fingers. Next Lonely Binary supplies a good quality, color, index card for the S3 showing pinouts and other vital information .. index card size. I do not need to have a 8x11 piece of paper with the same information getting in the way of my work area. No other esp manufacture (least none I found on Amazon) supplies these cards. Next Lonely Binaries S3 boots quickly and never drops the com ports after loading from Arduino or VSC. Software wise, the board is the best. When it comes to displays and neopixels or LCD displays, any ESP may have power issues depending on total current draw. In short, I feel the Lonely Binary ESP32-S3 N16R8 is a good investment as long as you keep in mind you may have to supply your own 3.3v or 5V source independent of the S3. With this in mind, I feel this S3 is one of the best. You get what is advertised unlike other ESP32-S3s. Just as an example, there is a ESP32-S3 N32R16 listed on amazon with the same separate boot and reset pin separation but when you look at the Espresisf chip via the picture shown in the advertisement, the Espresisf clearly states E1R8. This suggest that S3 has only 8MG PSRAM not 16. If that is the case, then I do not trust the 32MB declaration nor do I trust the separate pin layout. Here is that ESP32-S3 as shown on Amazon: ESP32-S3-DevKitC-1-N32R16V Development Board.

Good. S3 version capable with AI projects.