General Misc > Misc
Problems with the "$50 Dollar Robot" Tutorial
HDL_CinC_Dragon:
1) For the battery, it says on OnlyBatteryPacks.com the part number 10403 is a 6v 2000mah NiHM battery pack when in fact it is a 1400mah NiMH pack... not too big a deal but still an inconsistency
However, it was the 2nd item to arrive at my home, and am very pleased with the service
2) For the servos, the tutorial says that it should have come with "black box shaped rubber things that have holes in it" to mount them on their sides when, in fact, there were no such thing in the servos' boxes...
The servos were the first items to arrive at my home and it even had a little bag of candy in it much to my surprise
3) and perhaps one of the biggest problems is for the AVR ISPII Programmer it says that part number ATAVRISP2-ND should be perfectly compatible with the circuit and fit nicely to the 5x2 pin header group for programming the ATmega8 but what i received is the AVR ISP mkII In-System Programmer which has only a 3x2 head that runs into a small translucent blue box that converts the output to USB 2.0B and comes with a cable that is USB 2.0B to USB 2.0A for plugging it into your computer and also a "Technical Library" CD... im sure these would all be nice if the circuit was made for them...
This part is my fault but I spent literally all day today working on translating the poorly angled pictures into an actual device and had to desolder the entire circuit once to retry it and see if it worked. I worked on it from about 2:00pm to about 1:30am (currently 2:18am) soldering, debugging, etc with maybe a total of 2 of 3 hours of time that I wasnt working on the circuit... so about 9 hours... mostly because my soldering iron had a fatter tip that it should because its very very old so I had to go out to my bench grinder and make it a thin tip after I desoldered the whole thing the first time. That bit did help a bit
heres a tip:
*When things are that close together and they have to be perfect, dont have low angle pictures with very translucent dots to show where connections are made. Get 90? to the board and have opaque dots to show solder points. Pretty much zero confusion.
Basically I spent about $101.38 for parts and shipping costs as well as about 9 hours of day time for no reason... and im pretty aggravated about it and I dont want it to happen to anyone else so please look into the parts and image problems to try and work out any possible quirk...
BTW for all of you who cant pick out tone in text, im not shouting or being snobby in this post or anything like that. Im simply stating it
Eco19R:
never grind or use anything abrasive on the tip of your soldering iron, it will wreck it.
Qubix:
--- Quote from: HDL_CinC_Dragon on May 30, 2007, 12:32:48 AM ---
2) For the servos, the tutorial says that it should have come with "black box shaped rubber things that have holes in it" to mount them on their sides when, in fact, there were no such thing in the servos' boxes...
The servos were the first items to arrive at my home and it even had a little bag of candy in it much to my surprise
--- End quote ---
This seems to be quite true of a lot of servos, definitely all servos I've bought, they don't come with servo mounts. You can buy them separately but they tend to be expensive for what they are. Best bet is to make you own.
jthtiger:
--- Quote from: Qubix on May 30, 2007, 05:36:11 AM ---
--- Quote from: HDL_CinC_Dragon on May 30, 2007, 12:32:48 AM ---
2) For the servos, the tutorial says that it should have come with "black box shaped rubber things that have holes in it" to mount them on their sides when, in fact, there were no such thing in the servos' boxes...
The servos were the first items to arrive at my home and it even had a little bag of candy in it much to my surprise
--- End quote ---
This seems to be quite true of a lot of servos, definitely all servos I've bought, they don't come with servo mounts. You can buy them separately but they tend to be expensive for what they are. Best bet is to make you own.
--- End quote ---
of course the easiest way would be just to use e-tape or zip ties to but them on! VERY cheap and it works. I'm sorry about what happened to your robot. i thank you for posting this because i am starting on my first robot (which is the $50 robot) and i hope it will go smoothly.
Tiger
ed1380:
how did you spend $100. ???
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