Hi guys
Just wondering what you guys thought of this speed controller. From what i've seen it looks good, I just need to convince my dad :roll:
Thanks
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Hi guys
Just wondering what you guys thought of this speed controller. From what i've seen it looks good, I just need to convince my dad :roll:
Thanks
i have ordered these and too found it stupid how my parents won't let me spend my money.
as i am in Scotland i haven't had chance to use them yet.
the alternatives are victors which are Like $300.
they labled them as toys and i got charged no tax
they took 8days ti come.
i think they're worth it.
try and find that thread comparing botbitz to electronize.
i think its 3page and quite new.
Ok. I think I'll be buying a pair soon :)
Morning all,
Just want to double check as I'm assisting some new competitors. Does the botbitz 85a have a built in BEC circuit? I cut mine as soon as I got them as I was running an external BEC.
Cheers
Dan
The TZ85 has a BEC.
I bought 6 of'm, it's that much trust I have in those esc's.
Cheers Maddox. Ill advise them to cut one of the red wires as they will be running two escs.
Tormenta 2, Conker and Binky all use them.
The driving quality is amazing; I have driven Tormenta with the Electronize FR30HX's and the 85A and the difference is incredible.
The response it instant and they are incredibly forgiving of slamming back and forth on the drive. They barely got hot with ellis running them hard at MMM.
Well i've just ordered some of the brushless turnigy 85a esc. As i've already got the programmer there is little point in me paying twice as much for the speedos when the code is freely available! Hoping to use the base brushless esc to control boner's drum as well as it has burned out a few of the more expensive castle creations controllers.
If you have the equipment to do the coversion Gary you could sell them over here and undercut BotBitz prices; mainly the PnP from Aus. I was going to change them myself but It looked a little beyond me.
I was the first to import the tz85's into the uk and use a set in combat and I've yet to have any trouble with them...
Also I'd say hacking them for profit would be kinda harsh considering those guys put in the hard work money and time to get them to work, they deserve all the profits.
By all means hack them your self as a challenge though.
Wow that really would be a MAJOR c0ck slap to the guys that first worked out how to do it. Problem with selling speed controllers is the support and warranty issues following the sale. I just couldn't be bothered with it all.
Happy to make them for my own machines and would consider the odd one or two for others but no way am I going to go commercial with them.
Quote:
Originally Posted by typhoon_driver
Same here. Hacked a few TZ85A myself and its straightforward but I didnt develop the code and don't see this as something I could offer commercially
He developed the code and the technique! Ok forget that idea; buy them from him!
Just a quicky, could I use this esc with forward and reverse on a brushless motor. From what I've read so far, i'm thinking the answer is no?
Thanks.
no
These guys do one that is capable of reverse, in software, if i remember right.
http://www.teamnovak.com/
The motor but remain stationary at the time of the switch or it will turn itself off until you do a manual reset.
There's also the various SimonK firmwares that can go on many of the cheap esc's.
Not sure if that ones on the list though.
Hi,
Today i received two TZ85A from HK, how i'm accustomed to desolder smd components, i removed the Atmega8A to program,
to my astonishment neither worked! And had the same problem ( even without the rx, after ~10sec that i turn on they turn in one direction and stop, and never more work) after this i removed again the uC and program again, the same problem, i already programed by a USBasp programmer and the same problem.
Anybody already had the same problem?
Monday i will put the original uC in the place (to my delight, i kept the brushless uC)
Tnks!
Guilherme Ferreira
Guilherme, I'm planning on reprogramming mine this weekend but i'm going for the rough and ready reprogram the current chip in place. Not sure if I'll have any issues but time shall tell.
I just followed the instructions on the website and have programmed TZ85a fine
Well worth having a go at
Here's a good one for you all to solve cos I can't get my head round it.
I use two 85a escs. One had its red wire cut so only one esc was powering the esc. Fought 6 fights not a problem.
After the final fight, the link is taken out but the comes lose within and pulls the wiring a bit but can't tell exactly where. Now the esc that was powering the Rx isn't able to power it anymore and only works as an esc but only does that if the red wire is connected?!
In short, both escs have their red receiver wires connected now but one esc only works at all with that wire connected but won't work as a BEC also. Surely it shouldn't work at all rather than that?!
Sounds like the link the between the BEC pads inside has been broken. The turnigy speedos come with a switch that turns on and off the bec via two pads on the board. It looks like the bot bitz speedos connect this inside as I did with my own speedos. The easy thing to do is to not bother doing anything as your setup works. The other option is to open up the nackered speedo. There should be two pads on the power in side that should be connected.
Sorry to sound dumb but are you talking about the physical on/off switch that the original speedo came with but botbitz remove?
What can't get is how it happened?! Could you tell me roughly where in the esc these pads are?
That would be my assumption, yes. From memory, if you open up the speedo and are looking at it with the power wires on the left and the motor wires on the right then the pads are in the top left hand corner.
Cheers. Will have a look when I get 5 mins. Mega annoying when the robot works so well all weekend!
I'll update the forum as well for future reference for others.
Just had a look. They are still connected. It's defo an issue with the esc as I've isolated it to that.
Can someone remind me how long the shipping takes for botbitz controllers to the UK?
I'd say leave 10-14 days, or longer. Ours (to Spain not the UK, mind, with several bank holidays messing things up) took 20 days if I remember right.
Buy a programmer for £15 online, solder the connections to a turnigy 85a controller (around £25 each) and you have as many as you need. Give a man a fish and all that.
Think that will be the way forward. I've ordered a new botbitz esc for now and any future ones will be hacked by myself. Have you got a link to the programmer please? Also, have you got a link to the instructions for the hack? I remember seing them but can't remember where.
Cheers
Dan
Shows how good I am! Been avoiding work looking through that forum all morning!
Cheers dude!
for Robowars forum.
Having some issues with this hack. I'm using this Hobbyking AVR Programmer:
http://www.hobbyking.com/hobbyking/stor ... ssors.html
I can't get it to work with AVR Studio 4. My computer wont even recognise it and another has had loads of additional drivers and software but it still wont work.
Had anyone done this hack with the cheap HK programmer?
should have spent the extra few quid and got the avr one. No issues for me with it. There was a thread where someone in auz was tring to get the cheap one to work and they had real issues. I'll sews if I can find it when I get on my laptop
Hi Dan-27,
I used the dataman programmer and works well.
But you can program with the eXtreme Burner - AVR and you can take here:
Take the 1.2v in end of page
http://extremeelectronics.co.in/avr-tut ... ogrammers/
He support the HK programmer, you only need to set the fusebits.
Select atmega8,
Load the .hex file,
Configure AVR clock, the clock configuration is:
- External crystal/Ceramic ressonator
- 1Mhz and Above
- Start up time 16K+65ms
- Full R/R Swing
Pick write High fuse (must be 0xEF)
And Write all
Be happy!
Guilherme Ferreira
Just completed the hack on two ESCS using the pololu avr programmer. just followed the video!
i did the ground wire a little differently though by instead soldering it to the ground on a Rx extension wire, cutting the positive and signal and plugged to the ESC Rx connector.
And the software did not like Windows 8 at all. had major issues with that but might be as its running in boot camp on a iMac. worked no problem on standard windows 7
Thanks Guilherme, but I still can't get it to write using the eXtreme Burner.
I opened the tz8da_r40.hex file, set the chip to atmega8, changed to clock and selected high fuse but when clicked write all it failed when trying to verify the High Fuse Byte.
I've ticked 'write' and it's set to 0x EF but it's not working, any ideas?
This was the thread I was thinking of. Contact the guy that mentions the cheaper programmer and see if he can help.
http://www.robowars.org/forum/viewtopic.php?t=1609
I bought one of these
http://www.hobbyking.com/hobbyking/stor ... duct=21321
and use the KK programming software on windows 7
Worked a dream
Done half a dozen boards with no issue