Ian444's blog - RC Groups
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Posted by Ian444 | Jan 22, 2018 @ 04:45 AM | 6,485 Views
I've been working on a very simple 2-sided pcb to make it easier to use a silverware FC on a brushless quad. Just posting some build docs and pics for now, will give a few more details when I get time.

Gerbers are in the zip file and named in the OshPark convention, but submit at your own risk. They should work, all care has been taken, but until a board is received, inspected and built, it is a risk. There is an Oshpark page to order the boards now. Some boards are in transit to Yets to be checked out right now Mar 5th 2018. Will update in due course.

Gerber files for Seeedstudio are attached to post #10, and details on how to order are on post #66.

So far, around 10 boards have been built and tested (Mar 5th 2018), no issues so far, except I had to replace the antenna cap with a wire link to make telemetry solid on just one board. YMMV. It was designed to be as easy to build as possible, as I am new to SMD soldering, and I think I succeeded there. The only thing I changed from V1a to the current V1b is the footprint of the main processor, the rows of pads were a bit farther apart than I would like.

The board uses a schematic similar to a stock H8 mini blue board, except it uses a MPU-6050 gyro, and a different pin-out 2S-tolerant ZMR330 regulator. The pcb dimensions are just under 19mm square. The completed board weighs 1.73gm with antenna and esc harness.
Posted by Ian444 | May 06, 2016 @ 03:51 PM | 7,015 Views
After discovering the unsuitability of 8mm ply for a frame in my first build, (great material to work with, flies great, but not strong enough when crashing), I drew up some new frames in carbon fibre using QCAD, a free 2D CAD drawing program, and submitted the drawings to Armattan Productions. Armattan Productions are a unique and excellent service, you submit a design, it takes about a week to get approved, then you can buy it at cost price and keep it as a private design (no-one else can see it) or make it available for sale with no markup or whatever markup you choose. If you make sales Armattan will reimburse you through PayPal. For me, the benefit is that they can make high quality frames at a low price, of my own design. It takes around 2 weeks to cut the frame after placing an order, and shipping is usually one week to USA and 3 weeks to Australia. So its a long wait for me but worth it.

For this build I started with a 110mm frame, RCX H1105 5000kv motors, 4 x Turnigy Multistar 6A esc's and a CG023 FC.
Posted by Ian444 | Apr 18, 2016 @ 03:15 AM | 8,709 Views
Continuing the intrepid builder series, this is my latest build that flies well (I have done more than a few builds that didn't), its another one that is not mainstream, but I like it a lot, and thought I'd post it up, especially for those using flashed toy FC's for some (or all) of their brushless builds. Lets face it, if we are moving towards experimenting with brushless, and already have brushed quads and a half-decent tx, then it makes a lot of sense to use a flashed (silverxxx firmware) FC. They are cheap, small, light, easy to set up, come with an integrated receiver, and most importantly fly well. If they did not fly well, I would not use such a FC, period. Thats a bunch of good features that are hard to beat, no matter how much money you throw at it! Anyway, enough of that, on with the build... forgot to mention, its LOS, and it weighs 53.7gm. Its only been flying 2 days so as yet unproven for longevity, I think it will do OK though, we'll see. Longevity was something I wanted to test in this size frame, should we use 2mm carbon fibre for approx 10gm weight, or 3mm carbon fibre for 15gm weight? That extra 5gm is something I could really do without, but, if the quad is not going to last, then the extra 5gm is well worth it. This is what I want to find out with this build.
Posted by Ian444 | Mar 12, 2016 @ 03:50 AM | 10,675 Views
Here is a small brushless 120mm build using 1104 or 1105 motors, I thought I'd blog it to post the info if any guys are thinking of doing similar. Its pretty simple and I love how it flies. The FC and receiver are from an H8 mini quad and is flashed with silverxxx firmware. I fly in acro (or rates) mode and this firmware flies really well for me, I cannot fault it, its relatively easy to set up and is a great introduction to learning how to set up and tune the mainstream firmwares like Cleanflight/Betaflight etc. The "gotcha" with this firmware is you need a Devo with Deviation firmware and a nrf24L01 module to fly it, or a hobby grade tx with the Goebish multiprotocol module. The module may be available from Goebish on this forum (send him a pm), or it can be built DIY. The advantage of using this firmware is it flies so well, and the tx/rx on one pcb simplifies the wiring/building, and minimizes weight (not to mention easy on the wallet). The finished quad weighs about 56gm without battery.

Click on the comments button below for the rest of the build details.