Don't ad-block us - support your favorite websites. We have safe, unobstrusive, robotics related ads that you actually want to see - see here for more.
0 Members and 1 Guest are viewing this topic.
Would someone be so kind as to review my $50 robot eagle PCB board?
I am relatively new to electronics, and this is my first eagle project, so while it looks right to me, I suspect I may have some errors.Note, this is for the 6pin programmer with both the 4AA and the 9V battery packs, per webbot's PDF picture.I had been trying for about 2 weeks to properly solder the board, and I am having a brutal time soldering. I have very shaky hands and the tight connections are virtually impossible for me.I figured I would give Eagle a shot and I really liked it.If I can get the eagle board right, I next need to learn how to etch and transfer!
Hi,Quote from: ErikY on June 21, 2012, 03:11:21 PMWould someone be so kind as to review my $50 robot eagle PCB board?Always include both schematic and PCB layout as they may both be needed (but don't include a large number of the back-up files that Eagle makes at every save, as they're not needed here.Quote from: ErikY on June 21, 2012, 03:11:21 PMI am relatively new to electronics, and this is my first eagle project, so while it looks right to me, I suspect I may have some errors.Note, this is for the 6pin programmer with both the 4AA and the 9V battery packs, per webbot's PDF picture.I had been trying for about 2 weeks to properly solder the board, and I am having a brutal time soldering. I have very shaky hands and the tight connections are virtually impossible for me.I figured I would give Eagle a shot and I really liked it.If I can get the eagle board right, I next need to learn how to etch and transfer!For a first time attempt, it ain't half bad, but there's room for improvement of course...About PCB layout in general:Always use single sided PCB material if at all possible - it's cheaper and you won't have to solder both sides.Making tracks as wide as practically possible means less wear on your etching bath, lss sulphates in the environment and more copper to carry the current (hence a lower impedance).Use a copper pour where possible for the same reasons (not on extemely high impedance circuits and HF circuits though).Never use sharp (90° or less) corners, as this increases radiation. and weakens the physical "cling" of the copper foil to the carrier material (i.e. it peals much easier).Your particular layout:You have the connectors 1.5 module apart. Your voltage regulator is placed so that a heat sink would interfere with the power connector.You should start your layout at 0,0 as you can then measure width and height by just pointing at the upper right corner.Where's your other layers, like silk screen etc?Had you searched the forum, you might have stumbled over this layout I made:http://That.Homepage.dk/PDF/$50_Robot_SCH_OVL_PCB.pdfIt's single sided, doesn't wear too much on your etchant and is fairly small.Even if you insist in making your own, at least take a look at it, to see how it should be done