HiLetgo ESP32 LoRa V3 SX1262 0.96 inch OLED Display Development Board WiFi Bluetooth Dual Core 240MHz CP2102 and 433-510MHz Antenna for Arduino Smart WiFi LoRa 32(Unsoldered)

MicroPython loaded up with no problems on this board, ended up buying two and loving them! Really just wanted an easy project board for a sensor in my garden, I'm still working on building a permanent enclosure but it's working a treat with a 5V solar panel plugged in via USB, the automatic switching from USB to Battery is a nice feature! I was mainly interested in this board because a comment I saw that mentioned the plastic riser for the OLED screen, it makes it easier to build an enclosure around, as opposed to other boards that have other components raised higher than the OLED. I just had to order a second one up once I got the first! My only "gripe" isn't a very big deal, but the uFL connector is in an area that makes it a bit harder to unplug without tweezers/needle-nose pliers.. it's too close to the plastic riser for the LCD to get your fingers comfortably. (use my nails usually) Again, easily fixed with tweezers might prevent breaking a uFL cconnector or two! (haven't broke one yet...*knock on wood*) Can't link to external websites, but searching Heltec OLED ESP32 brought me to a few easy to use sketches that worked great in Micropython. Extremely happy with this board, ended up buying a second one!

This dev board is like a toolkit! The ESP32 chip has pretty deep resources, so it supports extensive sketches (want GPS integrated with WIFI and LORA?) Upon opening, I was surprised at the quality of the product. I've had microcontroller boards before with poor solder joints, and unreadable masks. Not the case here. Everything was lined up perfectly, and the display is very cleanly integrated into the module. It even came with stickers for pin labels. Came pre-loaded with a test program which runs a wifi scan, tests the OLED, and sends LORA packets. After adding the Heltec board info and library through Arduino, I was able to immediately start uploading examples and start testing with bluetooth, wifi, and LORA. There are several GREAT write-ups online if you google 'heltec esp32 lora', although I never even needed to reference them, it was great to know I had a fallback. Great board, well built, easy to use, I will definitely be using more of these.

This little board is amazing for building out projects that require low power (ie solar) and just can't be brought close enough to reach over wifi. The LoRa radio comes with the 433Mhz antenna which probably is the best balance for bands that you can operate on without a license for these types of applications. It has decent range but high enough throughput that it won't take half an afternoon to dump sensor data you are collecting. The JST and charging circuit do give you options to add some cells if you just plan on servicing the installation now and then. Finally, the OLED screen doesn't draw much power, but has plenty of real-estate to read out network stats, sensor readings etc if you need some feedback without hooking it up to a computer. The board boots up right out of the box and is compatible with several Arduino libraries if that's your preferred method of programming (see the attached video). Overall a great little board and for the price, it's hard to beat!

Took a while to figure out that gpio34-39) dont have software pullup/down and require an external pullup/down. Scratched my head for a while here, but couldn't find anything in the documentation. Docs are somewhat lacking, but with some effort you can figure them out, I've HEARD the antenna is poorly tuned for lora use, but that's just from youtube, and I haven't tested it myself. Bluetooth, HID, OLED all work great. The proprietary oled interface is a little weird, but works fine and is standard enough.

This review is for HiLetgo ESP32 LoRa with oled display board. The first impression of this board is that the oled is seated on a plastic base. That makes the board looks very well built and sturdy. The oled is a SSD1306 display with I2C connection which should be quite popular and easy to use. So far, I have tested wifi, the display, the built in hall effect sensor and touch sensor. They all working great. I used Arduino IDE for my testing and all the drivers can be found from the description of the Amazon product page. Last but not least, the back side of the board has a battery connection that allows to connect a lithium battery to power this board. One thing I didn't really try was the Lora because I only bought one board. I should have bought two of these boards. However, with that said, I am planning to get another one to try out the Lora functionality. Highly recommended !!

I have tested with multiple sketches and different libraries and my screen does not work. I watched a video on YouTube and I think it’s supposed have a sketch on it so you can see it working and I got nothing.. tested the WiFi and that is good

Nifty little board. Like the other ESP32 boards it is easy to program via Arduino. It comes with a sketch flashed which detects local WiFi hotspots and it easily picked up mine and my neighbors' routers. The LoRa functionality is something I'd like to dig into. Two neat features about this board: The screen is mounted on a translucent standoff which makes it 0.2" proud of the circuit board. This is nice for packaging into a case for projects that need to look nice and clean. Some other boards have the screen flush to the PCB which makes packaging difficult without having the display recessed. Also, there's a battery connector on the back of the board! It is a Micro JST connector for lithium polymer batteries (3.7v). These are commonly used in small RC airplanes and helicopters. A quick Amazon search will find you plenty of options. The attached picture shows a typical battery with the right connector, and the board in operation under battery power.

Very happy with this microcontroller. After trying several for a project I'm working on that requires reliability this is the only one that always worked with zero problems. It's not a tank but it's very reliable for what it is. I had to hunt around for details on some things but the info is out there. I haven't used the LoRa radio but the WiFi range is at least 30 or 40 feet. Other microcontrollers I tried struggled to send reliable data through miscellaneous stuff in the way including some metal. This one had no problems. If I had it to do again I'd get the version without a display since it's a bit of a power hog if you use it a lot, but it is very useful for prototyping.

No lo compren, muy malo, es muy complicado de programar, luego en operación se calienta mucho, el display se desvanece, mala compra