HiLetgo ESP-WROOM-32 ESP32 ESP-32D Development Board 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller Processor Integrated with Antenna RF AMP Filter AP STA for Arduino IDE
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | HiLetgo |
CPU Model | Tegra |
CPU Speed | 2.4 GHz |
Connectivity Technology | Wi-Fi |
Wireless Communication Standard | Bluetooth |
About this item
- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Ultra-Low power consumption, works perfectly with the Arduino IDE
- Support LWIP protocol, Freertos
- SupportThree Modes: AP, STA, and AP+STA
- ESP32 is a safe, reliable, and scalable to a variety of applications
Additional Details
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Product details
- Is Discontinued By Manufacturer : No
- Package Dimensions : 3.78 x 2.36 x 0.71 inches; 0.71 ounces
- Item model number : 3-01-1287
- Date First Available : April 22, 2017
- Manufacturer : HiLetgo
- ASIN : B0718T232Z
- Best Sellers Rank: #24 in Single Board Computers (Computers & Accessories)
- Customer Reviews:
Product Description
The ESP32 integrated with Antenna switches, RF Balun, power amplifiers, low-noise amplifiers, filters, and management modules, and the entire solution occupies the least area of PCB. 2.4 GHz Wi-Fi plus Bluetooth dual-mode chip, with TSMC Ultra-low power consumption 40nm technology, power dissipation performance and RF performance is the best, safe and reliable, easy to extend to a variety of applications.
Package included:
1 * HiLetgo ESP-WROOM-32D Development Board
If it cann't get bluetooth working. Using Node32 as the Board selection. To reference GPIO pins in code use just the number, for example "digitalWrite(13, HIGH)" sets GPIO13 high. The built-in LED to GPIO2.
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the value, description and compatibility of the single board computer. For example, they mention it's a great product, it has a dual core CPU and is quite powerful for the price point. Some appreciate the diagrams and schematics provided. That said, some complain about the connectivity issues and the pins. Opinions are mixed on performance and ease of use.
AI-generated from the text of customer reviews
Customers like the quality of the single board computer. They mention that it is well built, reliable, and a solid platform for development. Customers also say that the MCU is impressive and has good fundamentals. They also say the build and size are nice. Overall, customers are happy with the quality and functionality of the product.
"...Got a great project box for this and it looks so cool sitting on the desk! There are so many fun projects for ESP32...." Read more
"...The board works great and it looks well built. I liked the readable schematics too...." Read more
"...about a dozen of these now from HiLetgo and they all have been well made and reliable...." Read more
"...This is completely unacceptable - no busy developer is going to do that. If I build stuff like that, I lose my job...." Read more
Customers appreciate the value of the single board computer. They say it's well made, cheap, and powerful for the price point. Customers also mention that it has a dual core CPU and a boatload of IO.
"...SBC boards during this time of chip shortages, the ESP32 remains reasonably priced...." Read more
"Good price, and will upload a sketch if you hold down the "IO0" button for a second or so when it first begins to upload...." Read more
"This is a great board for ESP-32 prototyping/building at a very good price. Good parts: Seems well made and worked great...." Read more
"...The speed is impressive. I found it amazing to have a low-cost microcontroller with multiple cores that supports multitasking in the Arduino..." Read more
Customers like the compatibility of the single board computer. They mention that it fits nicely on a small breadboard, has the right spec size, and is narrow enough to fit into a standard breadboard. The compact design has nothing sticking out over the board and does allow for easy breadboarding. It's compatible with normal ESP frameworks such as Arduino and NodeMCU ESP-32s. Customers also say that it's small but powerful and can be found in a tiny and cheap package.
"...ESP32 offers a lot in a small package...." Read more
"...several HiLetgo modules in the past, (2) These are smaller than many of the other boards; as a result they can be used on a single breadboard and..." Read more
"Good esp32 but it’s a little different from other and i recommend to check the image for guidance on the pins" Read more
"...Apart from that, this board is awesome. It's narrow enough to fit into a standard breadboard with open holes on each side..." Read more
Customers like the description of the single board computer. They say it includes a much better pinout diagram and schematic than they have seen for these boards. They appreciate the detailed datasheet and large pin out diagram on the back. Customers also mention that the schematic is readable and the relevant circuit diagrams and board pinouts are included. Overall, customers are happy with the documentation and the accurate description.
"...It is also impressive that an acutal READABLE schematic is included, along with a large photo of the board pinout...." Read more
"...Compatible with NodeMCU ESP-32s, which means easy to find diagrams and compatible with Arduino IDE...." Read more
"...You will be spending a lot of time fighting with incorrect docs, buggy board installation issues, API differences and overall headaches...." Read more
"...Fortunately it came with a printed pin out diagram so you can 'count' to the pin you want!" Read more
Customers are mixed about the performance of the single board computer. Some mention that it works well, while others say that it wouldn't program correctly, the code wouldn' t run, and the sketch doesn't always start running when the board is powered-up.
"Chip worked great after installing correct drivers ...." Read more
"...this as a Bluetooth module for Home Assistant and it has been working great and took about five minutes to set up with ESP prebuilt bluetooth program." Read more
"...when I use an external 3.3V power supply to power the board, my code won't run. The 5V red led turns on and the IO2 blue led keeps blinking...." Read more
"Worked well for my project...." Read more
Customers are mixed about the ease of use of the single board computer. Some mention it's super easy to set-up and work with, with no struggles or mysteries. However, others say that the lack of instructions and complicated to use make programming it a pain. The initial setup required some research and the documentation is a challenge.
"...Using it with an LD2410 for presence detection. Quick and easy setup in Home Assistant & ESPHome...." Read more
"I don't understand. If you are selling a product that requires SPECIAL INSTRUCTIONS, like, to make it work somehow you need to push the button that..." Read more
"...No struggles, mysteries, or obscure instructions, and no peculiarities or non-standard features...." Read more
"...In all the are a pain to work with, but they are so much more versatile than Most Arduino products, and not even as pricey as a PI.." Read more
Customers have connectivity issues with the single board computer. They mention that they get connection error messages, link errors, and compile errors while uploading. They also say that the board loses WiFi connection and the Arduino IDE is unable to connect automatically. Some customers also report that the USB connection and serial connector failed after a month.
"...using different ESP32 that worked , but the new ESP32 would not connect to the Arduino IDE ." Read more
"1. The serial connector failed after a month...." Read more
"...I get good connectivity throughout my entire house (I tested it as some reviews for other ESP32 boards complained about bad WiFi reception)...." Read more
"...that seem to work then hours later I would get oodles of connection error messages/link errors/compile errors for what seemed like the same..." Read more
Customers are dissatisfied with the pins on the single board computer. They mention that the pin labels are not visible from the top of the board, and the pinouts are silkscreen printed only on the bottom of the module. They also say that there are no pin numbers or product identification on the board. Overall, customers find the pin out to be different compared to similar boards.
"...The only slight inconvenience is that there are no pin labels on the top of the board..." Read more
"...Cons:* The pinout is only printed on the bottom of the board, which makes it totally useless once inserted into a breadboard.*..." Read more
"...The board works great and includes a printout with a pinout for the board itself and schematics of the important chips that were used, which was..." Read more
"...I really wish the pins were labeled like I see on other esp32 boards...." Read more
Reviews with images
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Top reviews from the United States
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Using it with an LD2410 for presence detection. Quick and easy setup in Home Assistant & ESPHome. Got a great project box for this and it looks so cool sitting on the desk! There are so many fun projects for ESP32. If you are considering a board, get one from Hiletgo. It’s great.
However, when I use an external 3.3V power supply to power the board, my code won't run. The 5V red led turns on and the IO2 blue led keeps blinking. When I disconnect the external power supply and use the USB cable, everything works fine. If you don't plan on using an external power, it seems to work fine. In my case, I may have to look for another manufacturer.
I've submit a support request w/ HiLetgo and will update this review if there's a solution to this issue.
Updated on 6/11/23
It turned out there was a cold solder joint on my own board (not HiLetgo's) that was causing the issue. I was able to identify the problem on my own but HiLetgo did respond to my inquiries. I'm changing the rating to 5 stars and will be buying more boards!
2. Strangely, HitLego sells several different variants of the ESP32 on Amazon, with different pinouts, depending on how many you buy at one time. I reordered the same one because the price difference was small compared to the tedium of rewiring. Wish the industry had not moved to those tiny connectors.
Only complaint is that HiLetgo uses a linear voltage regulator, which is not that efficient, so unless you can supply the board with stable, regulated 3.3v from an external source, you won't get the super low µA sleep currents that the ESP32 is capable of. Can't really fault HiLetgo on this, since it's really hard to find boards with high efficiency regulators. If you know what to look for and the product pictures are accurate, you easily spot the boards with the inefficient regulator (hint: it's the package with the 3 pins on the left and large pin/bar on the right- the third largest component on the board after the ESP32 and USB modules). I now see that HiLetgo sells the more efficient board for almost the same price (ASIN B077KJNVFP)- or look for WeMos/LoLin.
Reviewed in the United States on July 18, 2020
Top reviews from other countries
Por eso lo compré, por las medidas.
Reviewed in Mexico on September 24, 2021
Por eso lo compré, por las medidas.
Reviewed in Spain on January 6, 2023
J'ai pu réaliser une version brute de ce que je cherche à faire en moins d'un après midi, malgré aucune expérience au préalable avec l'ESP32, en utilisant des librairies préécrites et un peu de logique.
Cela permet d'imaginer une multitude de projets connectés pour les futures journées pluvieuses ;)
Reviewed in France on December 29, 2019
J'ai pu réaliser une version brute de ce que je cherche à faire en moins d'un après midi, malgré aucune expérience au préalable avec l'ESP32, en utilisant des librairies préécrites et un peu de logique.
Cela permet d'imaginer une multitude de projets connectés pour les futures journées pluvieuses ;)
Ho testato la funzionalità “dual core” eseguendo due processi contemporaneamente, ed il tutto ha funzionato alla meraviglia. Incredibile per un modulino così piccolo ed economico!
La programmazione tramite l’IDE Arduino funziona senza problemi (bisogna però installare le librerie, in rete si trovano esaurienti spiegazioni e l’operazione richiede pochi click). Lavorando in Windows sarebbe necessario premere il tasto reset ogni volta che si vuole caricare il nuovo codice a causa di un bug nel driver usb (non c’entra il modulo ESP32). Per ovviare l’inconveniente è comunque sufficiente aggiungere un condensatore da 100nF tra il piedino “EN” e massa. In questo modo l’upload del codice è automatico. Durante i test ho scelto come tipo di modulo, nell’IDE, sia “ESP32 Dev Module” che “DOIT ESP32 DEV KIT V1” ed entrambi hanno funzionato correttamente.
Il modulino costa appena di più di altri siti noti, ma c’è il grande vantaggio che arriva in 2 giorni e non in 1 mese e mezzo.
Reviewed in Italy on December 16, 2019
Ho testato la funzionalità “dual core” eseguendo due processi contemporaneamente, ed il tutto ha funzionato alla meraviglia. Incredibile per un modulino così piccolo ed economico!
La programmazione tramite l’IDE Arduino funziona senza problemi (bisogna però installare le librerie, in rete si trovano esaurienti spiegazioni e l’operazione richiede pochi click). Lavorando in Windows sarebbe necessario premere il tasto reset ogni volta che si vuole caricare il nuovo codice a causa di un bug nel driver usb (non c’entra il modulo ESP32). Per ovviare l’inconveniente è comunque sufficiente aggiungere un condensatore da 100nF tra il piedino “EN” e massa. In questo modo l’upload del codice è automatico. Durante i test ho scelto come tipo di modulo, nell’IDE, sia “ESP32 Dev Module” che “DOIT ESP32 DEV KIT V1” ed entrambi hanno funzionato correttamente.
Il modulino costa appena di più di altri siti noti, ma c’è il grande vantaggio che arriva in 2 giorni e non in 1 mese e mezzo.