The Shop > Electronics & IC Programing
getting started with electronics
John Swift:
Hi Rob ,
just incase your interested
In the November EPE magazine (out now) , the 2010 Teach-in series has just started
Decembers issue out 11 November will have a 12v motor speed control / lamp dimmer
the PDF magazine can be downloaded via epemag3.com (12 issues for $19-99)
for now I,ll have to stop the mods to my lathe and use it !!!!!
I,ve made a few mistakes like removing the old bearings before I had received the new roller bearings
and had to re assemble it to make some new spacers !!
the last test comfirmed I can now part off without the workpeice trying to climb onto the tool
John
Rob.Wilson:
Hi John
Thanks for the heads up ,,, i will have a look :thumbup:
Its starting to get cold so working in the warm is starting to look good now :lol:
Good to here you have the lathe sorted :dremel: now what you going to make :poke: :poke: :D
Rob
madjackghengis:
Rob, I had the same notion with some wiper motors from surplus, I built a couple of the Vellman kits, both worked real well, were good designs, and easy to build. As was said above, all you need is a 25 watt soldering iron, some good solder, find the 63/37 tin-lead alloy, it's much the best, and sixteenth inch is the size you want for electronics, and keeping the iron tip clean while soldering, and dripping solder while not is of the utmost importance in the life of your iron. I use a light dimmer switch built into an electrical box meant for four sockets, and use a cover with two sockets and the other half has a slot for a switch. I cut the connection between the two sockets on one side, so one socket is full wall voltage, and have the light dimmer switch controlling the other socket, so you can reduce the heat on the iron, they tend to be hotter than necessary, and will burn through tips if they are not regulated. It's a lot cheaper than buying a "regulated soldering iron" which can cost well over a hundred bucks here, I don't know what that translates to there, but I bet it's too much there too. a cheap cellulose sponge, kept damp in a jar lid, is good for wiping off the tip just before soldering, and cleaning off the burnt flux after soldering, before retinning, and setting it aside. I keep a roll of eighth inch solder just for tinning the tip, to save the good stuff for the board. I hope this helps you pick out the cheap stuff, and get a good job done with it. :poke: mad jack
John Swift:
Hi Madjack ,
I agree with you
velleman kits are good
the pcb's with the solder resist layer are easy to solder
back in 2002 , I built the K7105 lcd 'scope that worked first time
a long time ago I built a very simple soldering Iron saver
an idea in a 1970's copy of "practical wireless" i think
using a modified switched socket
a 1N4004 diode across the switch kept the iron warm (on halfwave dc )
closing the switch the iron rapidly heated up
regulated iron are a bit expensive for hobby use
the weller wtcp 50 I have is about £ 140 now
most of the time I use a 18w antex iron and 0.7mm 60 /40 solder
John
AdeV:
John,
If you don't mind Chinese tools, Farnell do a range of very cheap soldering stations: http://uk.farnell.com/duratool/1296771-5090726-1467280/kit-soldering-st-wire-cleaner-uk/dp/1737234
I bought two of those (because they were so cheap) and some spare parts, only used one of them so far & very happy with it!
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