So far I'm going to so no to butterbot
Started it on Friday with default settings for gox
Started with 7.9 @ 195ish
First sale 188$ the lowest point this weekend.
First buy 205$ very close to the high for the weekend.
I went from 7.9 to 7.2 in two days.
At this rate I will be broke in a month.
I'm a recent investor in the bot, let me share my situation which is similar to yours. I tried it out a few times and was like, what the hell I'm losing BTC, but I had to remind myself it's EMA, it's long term--it's not simply "buy low sell high" (even though that's the general premise).
Basically, short term typically won't result in profits, so trying it out for a few days you won't see a profit (unless you happen to start the bot when the price is high and suddenly drops, which is rare). If you could try it out for, say 2 or 3 weeks, you would see the benefit. The tryout period is more to show how it works and that it would eventually work if you hit one of those magical trade points.
I have had about 3 weeks of trades (a few trades, not many) where most were losses by a single percentage, however, recently when there was a landslide drop in price the bot grabbed some more BTC. I knew the price would then go up and eventually sell high, it was a matter of waiting out and let the bot do its job. I funded my trade accounts with an extra BTC just to make sure to maximize my profit.
Sure enough eventually it grew and again dropped like 20-30$, and the bot sold.
The bot was holding some btc at $115 and some at $120, the peak value was $224/205 (mtgox/btce), and with my settings it sold at $208/190. Instantly made some USD which went back into those trade accounts.
About a day or 2 later the bot picked up on the next EMA rise in price and bought BTC for $190/178, and the price is slowly ticking upward again.
So I made BTC. Not a lot, but it's already paid for itself, so from here on out unless there's an epic failure of BTC, I'm going to be gaining BTC.
You have to wait it out, it's not a magical coin fountain, and you need to find what settings work for you. Mine are not the default settings, but even the default settings work well.
Here's a link to a read which might be helpful, the OP was exploring some settings similar to what I was. Mine aren't exactly what he has but they're close enough, and I find the settings work well for my "tastes":
https://bitcointalksearch.org/topic/evaluating-parameters-for-ema-crossover-trading-a-rigorous-approach-kind-of-290961Some folks don't like waiting things out and get too edgy, so it may not be a game for them to play; what I tell people is to simply setup the bot and forget about it. Check on it every now and then to make sure it hasn't crashed, but don't worry yourself with if it's going to work. The defaults alone will work.
As to funding, I would recommend having at least half a BTC (or cash equivalent) per trade account to really see the system work. I started out with .2BTC but it was only profiting by fractions. So to visually realize the gains, .5 is a minimum, I would really say 1BTC to get the feel for it.
Good luck to us all, cheers.