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Post by bender on Aug 22, 2004 20:33:32 GMT 10
hey this chip looks realy good for its price ans size.
im getting one from oatley so it tell u about it when it arrives. i think it will replace the job of the 386 in my robot. and il use the old computer for something else.
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Post by Dingoaus on Aug 22, 2004 21:43:06 GMT 10
Yes I recently bought a couple from MicroZed - They truely are fantastic value. One feature of the PICAXEs that I didn't suspect the usefulness for at first is the fact they can really easily send and receive ASCII serial data.
Makes for absolutely dead easy debugging.
If the 08M is too limited in memory then look to the 18X - I have three of these and in each project I've used them I have never hit a limit. And the X-chips support the I2C bus. This allows you to connect any I2C chip to them with 2 wires.There are Real Time Clocks, EEPROM memory, Speach modules, Temperature sensors etc that all use the I2C protocol.
(The cheapest place for I2C RTC by far is MicroZed - DS1307 $3.50 and suitable crystal - $2.00.
Nowhere I have seen has the DS1307 nearly as cheaply.
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Post by bender on Aug 23, 2004 18:09:29 GMT 10
im getting a 18x as well  |
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Post by bender on Aug 23, 2004 21:04:03 GMT 10
do u know where i can get more info on this i2c bus?
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Post by Bones on Aug 24, 2004 1:45:25 GMT 10
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Post by Dingo on Aug 24, 2004 10:41:41 GMT 10
This is the i2c and picaxe tutorial www.rev-ed.co.uk/docs/axe110_i2c.pdfI have just interfaced an 18x with a Real Time Clock (DS1307) over the I2C bus. It can be tricky to get it all working at first. Also have a look at the DS1307's datasheet it has some really good info about the signals sent on the i2c bus. pdfserv.maxim-ic.com/en/ds/DS1307.pdfThe best place for sourcing the DS1307 is MicroZed, $2.50 for the RTC and $2.00 for a Crystal. I would recommend this as a first foray into I2C because it is simple as it can get and it can be tricky still. |
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