Category Archives: DIY

Eachine EV100: gray bar & distorted image problem — cause, fix, and technical background

There have been a lot of rumors and discussion about the $99 Eachine EV100 FPV goggles recently. I already did some teardown, component analysis, component identification, and analyzed the “diversity” feature of the receiver in my previous posts. With the goggles being more and more used, people experience a new problem with these goggles: Depending… Read More »

Pagoda 3/3B antenna — 60 sets + Assembly jig on one PCB panel – fishpepper edition

This post is a follow up on my recent Pagoda3/3B panel design. Recently I have been asked to do an updated revision of my previous pagoda antenna panel for easy ordering. Maarten Baerts recently updated his great pagoda design. My pre-previous article on how to order 160 antennas for 40 bucks was a great success… Read More »

3S, 4S, 5S, 6S ?? — nah… Let’s go 12S/50A (240A Peak)!

It’s all about power — At least you get the impression when you follow the latest builds showing up on youtube. When I started with building quadcopters it was quite common to use 3S batteries with three lithium cells in series. Right now most quadcopters (other than micro builds as e.g. my pepperFIISH) will be… Read More »