Yet Another Walsknail Googles X Analog Adapter

The official way of mounting analog module to Walksnail Goggles X is no better than all of the promises of Caddx, so I've designed this thing. It replaces the upper cover and houses Goggles X extension board, Eachine PRO58 VRX, 3010 fan, MTS203 switch and MT30 connector. There's also an optional cover that fits Mini DVR module, as the goggles record only digital video.

This setup allows you to power on either the goggles or the goggles and the VRX. It has a fan for additional cooling and the MT30 allows you to connect a headtracker PWM to your transmitter. No disassembly of the goggles is necessary apart from removing the upper cover, as all the wiring connects to the goggles using the original cables.

BOM:

• Goggles X, extension board, original 5-pin jack cable,

• Eachine PRO58 VRX,

• MT-30 connector,

• MTS203 switch or similar,

• 3010 fan,

• step-down converter for the fan,

• 4x M2.5x18 SHCS - for the cover,

• 2x M2x6 SHCS - for the fan,

• 2x M1.6x10 SHCS - for the extension board cover,

• 5,5x2,1 barrel plug with ~15 cm of wire,

• some wire, preferably different colors of 22 AWG silicon,

• optional Mini DVR.

Assembly

The provided images are for reference only – use your common sense and triple-check the polarities. It is difficult to put the magic smoke back in once it has escaped.

The power supply for the extension board; fan voltage converter is fixed to the cavity behind it with double-sided tape.

Counting from the left, the connections are: 4 - video out, 5 - audio out (for DVR), 7 - GND.

The strain relief on the goggles' signal cable must be trimmed down for it to fit under the cover. Wire the switch to power either the goggles or the goggles with analog VRX. The blue wire leading to the XT-30 is the head tracking PWM.

Assembled lower portion.

Mini DVR: yellow - video, green - audio. Wiring it as I did allows for recording only. To enable passthrough to play the recorded video and access the menu, the video trace on the extension board would need to be broken and a second video wire added.

When assembling both halves, place the VRX in the upper cover and ensure that you do not squeeze any wires.

For the power cable, I used a blue braided wire sleeve and heat-shrink tubes with glue. The part near the XT-30 also has some filament inside to act as strain relief. The cable also has a second lead to provide power to an external ELRS module (Radiomaster Nomad) and connect the head tracking signal to the transmitter.

Check out my other FPV related things for more cool things. Happy printing and safe flying!