RobotWars101

So you have 2x single cell packs, so put them in series, right? Your wiring diagram is unclear. It's not clear what that orange thingy is. You only need to break out the parallel power and feed it to the dasmikro and the brushless ESC. The dasmikro will need to power the rx 5v, and possibly also the...

That is brilliant. I'm not sure whether you really need the fpga for shaft encoders, unless they're running really fast... Right now I've got a working antweight flipper with Raspberry Pi + IMU, just waiting for me to get my lazy arse on and write the software. In other news, there is a new laser ra...

Yes. I had my 4wd flipper working on a Dasmikro fine - until a couple of weeks ago when the Dasmikro ESC decided to fail spectacularly with smoke. But my own measurements suggest that the stall current for these little motors is < 1A, so I think 2 in parallel (per channel) should be ok. Especially i...

Hi, your Drax shell was

Colorfabb's economy black PLA.

https://colorfabb.com/pla-economy-black

Unfortunately it's in 2.2kg rolls.

Maybe ask someone in your local Hackspace. Our 3d printer guru chap gets the materials, I think we buy bulk PLA. I will check what filament the "Drax" robot shell was made with. I think it is worth going with a reputable supplier even for the cheap stuff, in my opinion, because at least yo...

Possibly the pulse levels output from the RX is different from the battery voltage if it has an internal regulator. That should not matter, servos will generally work with lower pulse levels than their battery voltage (I've tested 3v3 pulses on a 5v supplied servo, that worked fine) Nominally the pu...

The esp-wroom-32 module is 18x25 mm by itself. Obviously there needs to be some clearance around for running traces to the pins, but it may be possible to make a board only a few mm wider (e.g. ~ 21 mm) and extend the board down for the other components. I suppose a module of ~ 55x21 is do-able, dep...

For a future version - I will spin my own PCB with a ESP32 module, some h-bridges, voltage regulator and other gubbins to make a "just connect batteries and motors" solution. But that's a bit further off. I hope in June's competition to fight the Raspberry Pi one (it works but it's a bit w...

You probably realize this already but just in case you don't the TB6612 is just a motor driver chip and is not capable of working with the signals from the receiver but needs a micro controller to convert them. The DasMikro is a complete motor controller board and can work directly from a receiver....

I think that L298n is even older. The TB6612FNG datasheet is from 2007. The chip itself seems a bit whacky the way it's configured, but it operates ok. Maybe there are more modern, better ones, possibly in a nicer package. To solder, the fine pitch SMD part does seem like it could be tricky (I didn'...