SMALL - Telemetry SMALL - Radio
blackmoon's blog
Posted by blackmoon | Apr 05, 2015 @ 06:11 PM | 1,248 Views
06/04/2015 bis : After some thought the last (only took me a day, slow as a cow ) part of the second paragraph wasn't a total brain fart after all, I recalled why I wrote that.

The idea was to solder a female 3 pins Molex Picoblade on the bottom layer then plug it directly onto the OrangeRx_R415X's rudder port, that I have in stock (as I have a Devo7E running deviation I can do any mix I want), solder my battery wires on the top layer, and the wires (or Molex Picoblade male plug, if I want to use micro quad brushed motors that already have that type soldered) of my motor.

And there I have a nice little "brick" to play with.

06/04/2015 : Don't pay attention to last part of the second paragraph, I'll let it there for posterity so anyone can see that working late at night is mostly compatible with brain fart... one should read after Molex Picoblade connectors, ... if not used any plug can be used by soldering it to the pads available as in any other ESC. I don't really know what I was thinking of when I wrote that unless maybe advertizing for HK

It's been a while since I updated my blog, so what am I cooking, you may ask.

Well I scraped the first 1S Brushed ESC design, to bulky to costly to heavy... so meet the new and improved design based on Attiny13A with reverse polarity protection, no more blue smoke from ESC or receiver, 2A continuous (more if another FET is stacked onto the on board one), Molex picoblade connectors to have it directly connected...Continue Reading
Posted by blackmoon | Aug 15, 2014 @ 07:16 PM | 2,086 Views


Received the boards, nice little critters, as always from OSH . Weigh is 0.9gr board+atmega8L; it'll be a porky one with all the components wires and solder.

Need to understand better the timers on the Avr, capture is ok (I think) but PWM output need to be scaled and I still don't know how, yet! not easy but I'll get there... anyway I'm already making the successor with an Attyni13 soi-8.

I'm trying to make the board smaller and lighter. Firmware will have to be changed, because no ICP capture pin on the Tyni13.


Guess what? Even with my revised schematic I managed to make a mistake, for those who have the knowledge it would seem obvious, for the others here is my little piece of advice :

1. always, and I can't stress it enough, always RTFDS before doing anything else!

2. read it again!

3. make your design and re-read the datasheet

4. send it to the fab...

Long story short, when ICP capture is chosen, one can't generate a PWM motor signal on the PB1 pin, because the timer and comparator is used for the capture. At least is what I understand, after many hours of reading.
But fear not people, this is anything I can't fix, I'll just have to go Mr Hyde's alter-ego on the boards I'll receive... next batch will be fixed, yeah like a batch of three again

Scalpel ready, Doctor ?

Ho! and by the way, code is making his way slowly, it isn't so hard after all when you really concentrate on it, and... READ THE F* DATASHEET (now I know what the all...Continue Reading
Posted by blackmoon | Jul 25, 2014 @ 05:52 PM | 2,614 Views
License: Creative Commons Attribution-NonCommercial-ShareAlike 4.0

These are prototypes not built or tested yet, I have no reports implying they work... so build them and report back, thank you.

Rotary switch (10 positions) of the Multi Protocol Module boards.

Please read at least the first page of Midelic's thread, a lot of useful information is stored on the first post.

DIY Multiprotocol TX Module

DISCLAIMER : These modules are provided as is. Use at your own risks, I will not be liable for damages of any kind, including without limitation, any direct, indirect, punitive, special or other consequential damages that may result from the correct or incorrect use of this module. By using them, you take full responsibility for the damages or lawsuits that may incur.
Posted by blackmoon | Jun 17, 2014 @ 12:19 PM | 2,655 Views
License: Creative Commons Attribution-NonCommercial-ShareAlike 4.0

These are prototypes not built or tested yet, I have no reports implying they work... so build them and report back, thank you.

Midelic (him again ) decide to port part of the deviation protocol stack to the atmel architecture i.e. the atmega328p.

I decide to design a JR type case board on which up to four RF modules could be soldered, to make use of the protocols from Midelic's port. Because Midelic developed his port on an arduino pro-mini the first iteration of the board was made with that in mind.

Then some fellow RCG members asked for a Tqfp version, after that to change the dip-switch (for protocol choice) for a rotary one. So the board evolved to include four different version.

- pro mini with dip-switch or header for protocol change.

- tqfp same as pro mini above.

- pro mini with rotary switch for protocol change.

- tqfp with rotary switch.

As of now, only the dip-switch/header versions are available, soon I hope, the rotary switch versions will follow.

Please read at least the first page of Midelic's thread, a lot of useful information is stored on the first post.

DIY Multiprotocol TX Module

I'll only post the gerber files here, if you want to modify the boards they were designed on kicad

I recently found a schematic converter that claim to be able to convert from a lot of pcb file formats, kicad to...Continue Reading
Posted by blackmoon | Jun 05, 2014 @ 03:15 PM | 3,000 Views
license: Creative Commons Attribution-NonCommercial-ShareAlike 4.0

A tailored board for the PLC77's RX/FC at Midelic's demand, hence the name "The Midelic Special"

The capacitor is a C-type Tantalum, forgot to go for a B-type before routing, ain't gonna change it now, they are cheap on theBay.

16.08.2014 : Midelic shared this board on OSH PARK :

Fet Driver Board Rev1.3.3 grab it there if you need it.
Posted by blackmoon | Jun 05, 2014 @ 09:10 AM | 2,361 Views
license: Creative Commons Attribution-NonCommercial-ShareAlike 4.0

FetBoard without the inductor and changed revision for consistency.

These are the Kicad files, there is no gerber nor is the board routed, so anyone can edit and share them back.

You'll have to install latest Kicad from :

If you want to use Eagle, you have to find a good converter, I ddin't do the search for one, so don't ask.

Have fun!
Posted by blackmoon | Jun 04, 2014 @ 04:43 PM | 2,597 Views
EDIT: 28/08/2014 These boards are obsolete, better to order the : "The Midelic_Special! FetBoard rev 1.3.3" that is shared on Osh Park.

Gerbers removed.

license: Creative Commons Attribution-NonCommercial-ShareAlike 4.0

For this thread, I made some brushed MosFet boards to use in micro/nano quads or even planes.

They were specially tailored (except revision C) to be used on this RX done by PLC77 that can be used to make a little Mwii controller.

So for convenience, they can be found here as they began to be lost on the DIY Flysky TX/RX thread.

At a later time, I plan to modify them to :

- get rid of the inductor pads (it's better to have the filtering done on the FC/RX anyway).

- use integrated MosFet packages and redo the layout to reduce size and be more consistent.

All of this wouldn't be possible without the tremendous work of midelic Thank you, mate