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T-TWR REV2.1
T-TWR REV2.1
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About Shipping
About Shipping
Methods & Delivery Time
- Standard Express: 25-30 Days
- YunTu Express : 10-20 Days
(Company name can't be used consignee) - DHL: 10-17 Days
- FedEx: 10-17 Days
Please note that all delivery times are estimated for reference only.
Check More Info: Shipping Policy
About Tax
About Tax
We only charge you for the cost of the product and shipping, no taxes are included.
Specifications
MCU | ESP32-S3-WR0OM-1-N16R8 |
Flash | 16MB |
PSRAM | 8MB |
Wireless protocol | Wi-Fi & Bluetooth 5 (LE) |
Onboard functions |
4 Buttons (PPT+Boot + PWR + Reset) PMU AXP2102, TF Card function, WS2812 RGB LED |
Supply Mode | USB / 21700 battery / 18650 battery + spring |
L76K GNSS Module
Support |
GPS, BDS, GLONASS, Built-in LNA, SAW Filter, AGNSS and 1PPS |
1.3 inch SH1106 OLED
Resolution | 128x 64 |
I2C Interface | SDA--IO08 SCL--IO09 |
Display Color | 2 |
Sample Code For Reference [Github]
If you need technical support please check the below link to find more details
Other Support
Size For Reference
Pin Diagram
More
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Who can use
It's easier to master these development boards with a basic programming knowledge [engineers/ students/ makers, etc..]
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Accelerated processing
International orders please make sure your address is in English
For Hong Kong, Macau and Taiwan orders, please note your personal ID. -
Got a question
Click on the bubble in the bottom right corner where some frequently asked questions are answered, or just drop us a line.
I write code for APRS and I'm developing also for this unit to have a one "does it all" and it comes very well into it. Great power with SA868, great flexibility with esp32s3 that enables to use It as walkie/handy, also send tones and afsk and also communicate with phones over BLE
Virtually no interest in developing custom firmware for this product. The community seems to have abandoned this model. Factory firmware is extremely limited and clunky to use.
Receiver is nearly deaf, I couldn't receive a single audio signal, couldn't even tune into 3/4th of the frequencies I know because the stock firmware is so bad. No de-bounce on the buttons is awful for navigating the menu.
Most of this is probably fixable with better software, but right now, the units are basically unusable.
I am happy with the product but have two suggestions. 1) change to a battery holder that already has the spring in the holder. 2) The from (black plastic) gets loose and moves around quite a bit after handling.
Hi, thank you very much for your feedback and suggestions.
1. About the spring, we deliver the spring is to adapt the 18650 battery. The default battery holder is for 21700 batteries.
2. The black battery holder moving problem, it would be better if you can help to provide a picture, then we can confirm whether it is a welding problem, or the quality of the battery holder plastic problem.
Thank you for your patience.
It is a great concept, but has some quirks that need to be addressed. If left off for a long period of time, it will drain the battery past the safe discharge limit, all the way down to zero volts. One of the units died while working and subsequent efforts to bring it back to life put it into a reboot loop. ESP32 chip had cold solder joints, now fixed, but now the chip gets very hot, making it unsafe to operate.