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LILYGO® TTGO T-A7670G/E/SA R2 4G Development Board
I’ve been diving into a lot of IoT projects lately, and after some research, I came across the LILYGO® TTGO T-A7670G/E/SA R2 4G Development Board. What caught my attention was its LTE CAT1 support, which is a must-have for reliable, long-distance communications. I chose this one because I needed a versatile development board that supports various GSM networks like GSM, GPRS, and EDGE. Plus, it supports TF cards, which was an added bonus.
Upon receiving it, I was surprised by the build quality and the ease of setup. It was a plug-and-play experience in terms of compatibility with my existing Arduino projects. I used it to create a remote sensor station and was impressed with the signal strength and how quickly it connected to the network. The setup process was straightforward, and the documentation was pretty helpful.
Pros:
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Wide compatibility with multiple network standards (LTE, GSM, GPRS, EDGE)
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Great for IoT and development projects
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Works well with Arduino
Cons:
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A bit bulky compared to other ESP32 boards
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Documentation could be a little more detailed
In comparison to similar products in the US, this one is priced fairly low for the features it offers. Similar boards here can cost 1.5–2x more, which made this a great value. It definitely exceeded my expectations and worked perfectly for my needs.
US $20.38
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TTGO T-Call V1.3 ESP32 Wireless Module
Next up is the TTGO T-Call V1.3 ESP32 Wireless Module. The standout feature of this product is the SIM800L module, which lets you connect a SIM card directly to the ESP32 board. I was particularly excited about this because I wanted to integrate cellular connectivity into my existing ESP32 projects. Plus, it came with an antenna, so I didn’t have to worry about sourcing that separately.
The product arrived quickly and in good condition. Setting it up was smooth, and it took just a couple of hours to get it working with both WiFi and GSM. My first test was a remote monitoring system, and it worked just as expected. The module’s ability to handle both WiFi and GSM communication was exactly what I needed for my IoT setup.
Pros:
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Integrated SIM800L GSM/GPRS module
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Supports both WiFi and cellular networks
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Great for Arduino compatibility
Cons:
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The antenna can be a bit finicky in certain environments
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Needs a stable power supply for consistent performance
Compared to similar boards in the US, this one was much more affordable, especially considering its dual WiFi and GSM capabilities. It exceeded my expectations by offering solid performance without breaking the bank.
US $21.59
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LILYGO® TTGO T-SIM7000G SIM Development Board
When I came across the LILYGO® TTGO T-SIM7000G SIM Development Board, I was intrigued by the SIM7000G module, which supports 2G, 3G, and even 4G networks. This one seemed perfect for a more robust long-range IoT project. I liked that it combined the ESP32’s WiFi capabilities with cellular connectivity. It also came with GPS support, which made it ideal for any kind of outdoor tracking project.
I’ve now used it in a couple of GPS tracking projects, and I must say, it works surprisingly well. The module’s GPS reception is accurate, and I had no trouble sending data over the GSM network. The board is easy to work with, and the Arduino library support made it simple to integrate.
Pros:
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Supports 2G, 3G, and 4G networks
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Built-in GPS support
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Easy to use with Arduino IDE
Cons:
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Doesn’t come with a dedicated power supply
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GPS antenna needs to be placed in an open area for best results
When comparing this to similar products available locally, the price difference is significant. Here in the US, I would be paying double for similar functionality. Overall, I’m happy with the purchase—it does everything I expected and more.
US $32.12
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TTGO T-Call V1.4 SIM800L Development Board
I’ve used a few TTGO boards before, and I was curious to try the V1.4 SIM800L Development Board. This board includes WiFi and Bluetooth capabilities, which I found super convenient since I frequently need both for various applications. It also supports SIM800L, which is perfect for GSM/GPRS projects.
The product arrived within the expected time frame, and the build quality was solid. My initial impressions were great—the setup was simple, and I was able to get it up and running with an Arduino in under 30 minutes. The WiFi and GSM modules work in sync, making this a powerful tool for remote communication projects.
Pros:
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Dual WiFi and Bluetooth support
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Good build quality
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Works well with Arduino
Cons:
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Can get hot under heavy use
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Documentation is lacking some details
The price of this board is very reasonable, especially compared to US prices for similar development boards. It performed better than expected, especially given the cost.
US $12.71
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LILYGO® T-SIM A7608E-H LTE Cat 4 Board
I’ve been looking for a high-speed 4G LTE development board, and the LILYGO® T-SIM A7608E-H caught my eye because of its LTE Cat 4 support. It offers much faster data speeds compared to lower-spec boards, which is critical for my projects that involve real-time data transmission.
The delivery was faster than I anticipated, and the board was well-packaged. I was able to integrate it into my existing setup with ease. The LTE speeds were exactly what I hoped for, making this board perfect for any application that requires quick data transmission. It also integrates well with both WiFi and Bluetooth, making it super versatile.
Pros:
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LTE Cat 4 support for high-speed data transfer
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Versatile with WiFi and Bluetooth
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Well-built
Cons:
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More expensive than some other boards
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Needs stable power supply for optimal performance
In terms of value, this board offers great speed at a fraction of the price of similar models available in the US. It definitely exceeded my expectations in terms of performance and speed.
US $20.55
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TTGO T-Call V1.3 ESP32 Wireless Module (SIM800L)
This is essentially a repeat of the TTGO T-Call V1.3, but I had to include it because I love this module for GSM/GPRS projects. The addition of a SIM card slot and antenna makes it even more useful for anyone who needs reliable communication in remote locations. It’s become a go-to in my projects due to its reliability.
Pros:
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Compact design
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Supports GSM/GPRS
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Simple to use with Arduino IDE
Cons:
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GSM coverage is limited in some areas
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Documentation is brief
At the price point, it’s an excellent value, and it’s become a staple in my toolbox for IoT development.
US $35.63
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Overall Opinion
After trying out these products from AliExpress, I am pleasantly surprised by how well they performed. All of these boards turned out to be reliable and much more affordable than their US counterparts. They worked as expected, and many exceeded my initial expectations in terms of functionality and ease of use.
I would definitely recommend these products to anyone in the IoT or DIY electronics space. The quality is impressive for the price, and I’m already planning my next order.
US $13.34
