I forgot to attach photos to my last blog about the HT-FPV frame!
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| Assembled frame, topplates removed |
Above is the assembled frame, with the topplates removed. In this shot, the power distribution board hasn’t been added, but the assembled arms are on the frame. The blue heatshrink-wrapped things are the Hobbyking F-30 ESCs. The motors are the Turnigy 2217-16’s. For connectors I’ve used Hobbyking’s shrouded 3.5mm banana plugs. They make a good tight fit. Notice how the servo lines from the ESCs are supplied with a ferrite choke.
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| Motors with cut-off shafts |
Above is the motors, with the ends of the shafts cut off. I simply used a pair of bolt cutters - don’t hold onto the motor when you cut otherwise you might bend the shaft. After cutting, I put them on the laser balancer, and they all appear to be fine with minimal adjustment.
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| Power distribution & Attopilot |
Regretfully I forgot to take a photo of the Attopilot before heatshrinking it. In the green heatshrink is a 90A Attopilot, used for current and voltage sensing. That then attaches to the power distribution board. Due to the length of the ESC cables, I had to attach small 3.5mm banana plug leads to the distribution board, unfortunately. I was hoping I’d be able to solder the ESCs directly to it.
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| Power distribution installed onto bottom plate |
The power distribution board is attached in this view. Coming up through the middle is the sensor cable for my TM1000 telemetry module, and the current/voltage sensor cable for the Attopilot (current is white, voltage red, ground black). Everything fits, although it was a bit dodgy with the large banana plug connectors.
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| Plates with APM Adapter mockup in view |
The printout is a mockup of the APM Adapter board I’m having manufactured. As you can see, it fits. I had to shift some of the spacers that connect the very top plate in order to free up the 60x60mm holes.
At the moment the HT-FPV is sitting aside waiting for the APM Adapter to arrive. Once that turns up, assembly can start in earnest!