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Forum Index : Microcontroller and PC projects : Add USB, 5V and 3.3V cheaply.
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donmck Guru  Joined: 09/06/2011 Location: AustraliaPosts: 1313 |
Add USB, 5V and 3.3V cheaply. Just spotted this post in "sci.electronics.design" newsgroup. Add USB and 5 V and 3.3V power and felt it could be of interest to some members. From Jan Panteltje (regular contributor to many user groups and Electronics Book Author) http://panteltje.com/panteltje/jan/index.html Cheapest way to add USB and 5 V and 3.3V power to a RS232 PIC project Got some ebay USB To RS232 TTL PL2303HX Auto Converter Module Converter Adapter for arduino ebay object: 360750555245 Module has 5V and 3.3 V out (from the USB power). The PL2303 works 100% OK with Linux native drivers. Just connect to RS232 in and RS232 out, and power, and no need to write USB code, or get a special PIC, or bother about licenses, or maxmin^h^him chips. and all that at only 99 dollar cents a piece. I just build one into an existing RS232 project, simplifies a lot of things. Any terminal program or script can talk to it. It is also a lot cheaper than external USB to RS232 adaptors (wut hte same chip!), just solder the pins into your board. # lsusb Bus 005 Device 006: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port PS it has a red LED too, to show USB is connected. Googled and found this at 99 cents (USD): http://www.ebay.com/itm/360750555245#shpCntId But does not ship to Australia. But this one does at $1.47AUD http://www.ebay.com.au/itm/USB-To-RS232-TTL-PL2303HX-Auto-Co nverter-Module-Converter-Adapter-For-arduino-/180953299346 Cheers Don... https://www.dontronics.com |
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| WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2817 |
Hey Don, If you ever get the chance to go to China you will see row after row of massive warehouses full of these 'goodies'. I reckon any BSF member would have fun over there; and would easily be able to spend just $100 and buy a lifetime's supply of 'bits & pieces'. So not a bad business these bulk Chinese sellers have. In the last 1 month the seller (your second link) has nearly 26,000 positive feedback scores. Assuming at least $1 per sale then thats not a bad $return$ in the month! And there is probably an equal number of buyers that don't rate the seller - another big handful of $$'s to add to this figure. And do you think they bother about the 1% giving negative feedback! All I would add is that if you do buy some of these 'cheapies', then buy several (not just one) and be prepared to throw a quantity away - still works out cheaper though than the 'genuine' thing!! 
WW For everything Micromite visit micromite.org Direct Email: whitewizzard@micromite.o |
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| akashh Senior Member  Joined: 19/01/2014 Location: IndiaPosts: 115 |
I get lots of my samples and components from AliExpress , you can get anything and everything there, prices are very decent and I only once had a problem with one of the items which didn't function correctly. After complaining I got a full refund immediately. I highly recommend this to anyone who doesn't know it. Akash |
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