While I’ve been using the original True-D diversity modules, I have to say that Furious FPV has just made it even better with the True-D V3 after using it for a few days.
The True-D Diversity Module is a modular video receiver for the Fatshark Dominator series FPV goggles.
You can get the True-D V3 from LINK.
In the True-D V3, not only the software is better, they have also done a good job on improving hardware. But I feel bad for those who only recently bought the V2, as the firmware isn’t update-able (yet).
Here is the review of the previous version – True-D V2. Comparing the 2 modules side by side.
You can see the receivers are built on 2 separate PDB now.
Hardware Features / Changes
- Built-in USB port for easy firmware update (and editing start-up logo), no more USB-Serial adapter
- The wheel button is replaced by 3 single-press buttons (up, mode/select and down), which makes it easier to operate and more durable
- Fatshark button support – You can now change channels with the Goggle’s buttons, without taking the goggles off. However I found it doesn’t in manual mode
- Integrated Buzzer – for low voltage warning (goggles’ battery), new Time up feature (timer – in case you forget to turn the unit off), and low video signal warning (user settings )
- It supports 40 channels, as well as any user define channel (any frequency between 5300-5945MHz) therefore compatible with the new 48ch VTX
- Separate receiver modules design for better cooling and reduced overheat issue
- Compatible with Fatshark Dominator V2 and V3
- SMA antenna connectors
- Transparent plastic case for better LED light visibility
V3 Software Features / Changes
- Higher RSSI Resolution for better antenna selection
- Algorithm upgrade for faster and smoother receiver switching
- New User Interface
- New setting – “Filter” – controls the level of the antenna switching algorithm. When flying close by, often around yourself that requires antenna switching, use “High”; When flying long range that only use the directional antenna and doesn’t require antenna switching, use “Low”; Default “Normal”
- Modes – Auto / Manual / Working Modes
- Auto Mode: system scans through all channels and bands and automatically lock on channel
- Manual Mode: user manually scrolls through each channel and band
- Working Mode: user manually scrolls through a list of channels previously saved (up to 8 channels of any bands)
Q: What’s the current draw with Dominator V2/V3?
A: It draws about 650mA of current on Fatshark Dominator Goggles.
Q: Can True-D V1/V2 upgrade firmware to V3?
A: Not possible currently because the V2 module doesn't have enough memory, but they are making a custom V3 firmware for the older modules, should be soon.
Q: Would the transparent case cause sun light leak?
Improvements I Want to See
- Display Goggles’ battery voltage on screen?
- While the buzzer is a nice feature, there are times we want to be silent, and there seems to be no way we can turn the buzzer off at the moment
- No info on how to create/update logo
- When Time Up mode is activated, the beeping keeps going until you switch off the goggles or receiver. Maybe allow user to reset the beeping with a press of button?
What is diversity?
A Diversity module offers clearer and more reliable video. The module has 2 receivers, and the system always picks the one with higher signal strength. The real benefit of diversity comes in when using 2 different types of antennas: a directional antenna that offers greater range within a narrow beam, and an omni-directional antenna that gives you shorter range, but the all-round reception.
Official Instrucitonal Video
This video walks you through the basic operation of the True-D V3 diversity module.
Important – Update 07/March/2017
A hardware bug was found, please see this post for detail.