The Eachine Nano VTX has been a great option for micro FPV drones as it weighs only 1.5g. They recently released the V2 new version. Let’s find out what they improved and how much better it is than the V1.
Check out my VTX buyer’s guide if you are new to FPV.
Where To Buy
Get the Eachine Nano VTX V2 here: https://oscarliang.com/product-ih23
In the package it comes with the Eachine Nano V2 VTX, a dipole antenna, heatshrink, 20x20mm mounting board (clear plastic), and the instruction manual.
Specs and Features
The Eachine Nano V2 VTX has the following features:
- Built-in microphone for Audio
- Single push button for changing settings
- Supports VTX control (IRC Tramp)
- Solder pads – no stupid connector
- U.FL (IPEX) Antenna Connector
- Supports Pitmode
Apart from the mic, there is almost no difference in terms of specs between V1 and V2:
- Selectable Power: 25mW, 100mW, 200mW and 400mW
- Input Voltage: 5V Only
- 6 Bands, 48 Channels (ABEFRL)
- Dimension: 14x15x4mm
- Weight: 1.5g (without wires and antenna), 2g including silicone wires (without antenna)
Close Look at Eachine Nano VTX V2
First impression, it’s tiny!
Despite of the similarity in specs, the circuits have been redesigned. However the dimensions of the VTX remain the same, at only 14x15mm, about the size of a fingernail.
Eachine managed to squeeze a microphone in this small VTX (the component at the top right corner in the below photo). However, it didn’t seem to work for me, all i hear is static noise. Maybe a faulty unit?
Further Reading: Why Listen to Audio During Flight?
Just like the V1, you can change settings using the push button, and the selected channel, band and power are indicated by the 3 LED’s.
But I find it extremely tedious to use just like the V1, it takes a long time to wait and count how many times the LED’s flash, and how many times to press the button. And the VTX gets hot and can burn your fingers.
Luckily you can hook it up to your flight controller, and change VTX settings through Betaflight OSD menu. And this is my recommended way of using this VTX. By the way, it’s using IRC Tramp protocol, not SmartAudio.
Here is the provided manual that shows the pin-out of the VTX, and some simple instructions.
VTX Table for Eachine Nano VTX V2
In order to change VTX settings in Betaflight OSD, you have to first enter the VTX table in Betaflight. See this tutorial if you are not sure what VTX table is.
The same VTX table worsk for the V1 as well as V2:
vtxtable bands 5 vtxtable channels 8 vtxtable band 1 BOSCAM_A A CUSTOM 5865 5845 5825 5805 5785 5765 5745 5725 vtxtable band 2 BOSCAM_B B CUSTOM 5733 5752 5771 5790 5809 5828 5847 5866 vtxtable band 3 BOSCAM_E E CUSTOM 5705 5685 5665 5645 5885 5905 5925 5945 vtxtable band 4 FATSHARK F CUSTOM 5740 5760 5780 5800 5820 5840 5860 5880 vtxtable band 5 RACEBAND R CUSTOM 5658 5695 5732 5769 5806 5843 5880 5917 vtxtable powerlevels 4 vtxtable powervalues 25 100 200 400 vtxtable powerlabels 25 100 200 400 save
Once I entered the above command lines in CLI, VTX control worked perfectly, I could change channel, band and power through Betaflight OSD without any problems.
Output Power Testing
When I was testing the Eachine Nano V2 VTX, I was surprised by how stable the output power was, it didn’t drop drastically as the VTX heats up like many other compact VTX’s do. However it didn’t live up to the great performance from the previous version, and the output power are quite a bit lower compared to the V1 across all power levels.
The only advantage of the Eachine Nano V2 VTX is the additional microphone, but it doesn’t work (at least in my case). The V2 that I tested also seems to be slightly under-performing when it comes to output power. Not a deal breaker though to be honest, for a micro quad flying in close proximity to the pilot, this is more than enough.
I think the V1 is still a better choice based on my experience, it’s even $1 cheaper.
You can get the V1 here: http://bit.ly/nano-vtx.
But eventually it will be replaced by the V2 when stock runs out, and you get the Eachine Nano VTX V2 here: https://oscarliang.com/product-ih23
I hope they fix the microphone in the future (or make sure it works if it’s a quality control issue).