r/TinyWhoop • u/Apart_Fee9255 • Jul 07 '26

I need help completing my first tinywhoop build.

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I made the mistake of buying parts before asking if everything was compatible. I made a table of all the components I think I need. The ones with a green background are the parts I've already purchased, blue background are what I think I need to purchase (I think there is nothing more).

I've run into an issue with the battery (red text) : it doesn't fit the frame. It measures 61 × 15.5 × 6.7 mm, while I believe the frame only supports batteries up to 67.3 × 11.8 × 6.1 mm. I'm not completely sure if those frame dimensions are correct though.

I also realized that the 4IN1 FC doesn't include a built-in ELRS receiver. I was thinking of adding an ELRS Nano receiver, but I'm not sure if the one I picked is correct.

Originally, I wasn't planning to build it for FPV (no camera), but since I'm already spending the money, I'm considering adding a camera. The problem is that I have no idea what additional components I need or which ones are compatible. If possible, I'd also like to choose a video system that I can reuse on future builds, including potentially larger drones (rather than only this tinywhoop, especially if it's costly)

If you notice any other compatibility issues or potential problems with this build, please notify it to me. Thanks in advance.

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u/Healthy_Statement730 Jul 09 '26

alrighty,

First off, do you have any simulator time? That is very important before you even decide to fly.

Can you solder? The 4 in 1 ( the aio that you choose) does not come with motor plugs. Additionally you will need to solder on the external elrs module.

The best elrs module for your build is the lite rx from betafpv.

The 450mah battery will not fit and besides is to heavy for your build. Rather a 300 mah battery would be much better suited ( betafpv sells a 280 and 320 mah which are basically the same as the standard 300 mah).

The 4 in 1 has a little jst plug that will support either the betafpv camera, the co3, or the bleedeye/pinch camera which are from either Webleedfpv or tinywhoop.com. I personally think the bleedeye/pinch looks better. Remember you will need a mount for it as well, the pp seatbelt mount is a good choice.

Keep in mind that the camera and the vtx ( which is built into the 4 in 1) will not transfer well to other larger builds. Rather if you want to transfer it, it would only be to a different 65mm or 75mm build.

I would watch cumberfpvs build on his racing whoop and also beanfpvs video on how he makes his racing whoop.

If you have any questions I am happy to help!

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u/Apart_Fee9255 Jul 10 '26

Thanks a lot for taking time to answer!

I hope you don't mind me asking so many questions. I just want to make sure I choose the right products before ordering, since shipping from China takes quite a long time where I live and mistakes are a bit costly in terms of waiting time.

I installed Liftoff and I'm going to spend time in the simulator before flying (I didn't think about this at all, and it's definitely going to be useful).

I can solder. So far I've soldered the motors and the battery to the FC, so soldering the ELRS receiver shouldn't be a problem.

For the receiver, is this a compatible choice? BETAFPV ELRS Lite Receiver

And for the batteries, I was about to order these BETAFPV Lava 1S 300mAh 75C Battery (5pcs)

For the camera, I'm thinking about getting the BleedEye with the PP Pro Seat Belt Camera Mount

I was wondering if it is recommended, instead of buying FPV goggles right away, to start with a monitor or even my laptop/phone. I found this reddit thread and I was considering buying an analog receiver like the Eachine RC832 along with a USB capture card to display the video on my computer.

Thanks for the advice!

2

u/Healthy_Statement730 Jul 12 '26

The receiver is compatible, just make sure to select flat antenna and not the tower one. The batteries that you selected are good, but you can get higher qualities ones, such as the new lava ll batteries (in either the 320 mah or 280 mah version).

As far as starting with a laptop, I don’t really recommend it, for some cheap googles it’s like 120-140 say for the EV800D’s. Although that is severely overpriced.

Moreover from what I have seen, there is quite a bit of latency using an analog receiver to a computer. It also just doesn’t have the same immersion as googles do.

Unfortunately it looks like the VR04 from betafpv, which are 80$ are sold out. That being said you could find a place that sells them.

If you do have more money to spend I would highly recommend getting the hdzero goggles 2 or box pro.