Beginners: please read this post and this post before posting to the forum.
0 Members and 1 Guest are viewing this topic.
hey airman00,the pages are for completely different purposes.one is a module list, one is a list of requirments for PCBs and one is a design doc for the communication protocol.you have a point though: we need a directory page for documentation. in the short term i'll put links to all pages at the top of all 3.Communication Protocol#; http://docs.google.com/Doc?docid=ddp2r5j8_21dgt72qgz&hl=enModule List: http://docs.google.com/Doc?docid=ddgqp9wc_0gpbcwmgm&hl=enPCB Design: http://docs.google.com/Doc?docid=ddp2r5j8_24hhf75vck&hl=endunk.
i think the i2c and power connector should be mounted closer to one corner of the board so 38 x 38mm boards can be plugged in while still staying on the same mounting hole grid.Ro-Bot-X: have you actually used the right angle header pin sockets in your schematic?do you think they will do what we want? i certainly like the look of them?got a part number for them? also, which Eagle library are they under?dunk.
We need to specify the placement of the I2C connectors!
If I remember corectly, the pull up resistors need to be at the Main Microcontroller unit right? I guess we should include them for each board that also has UART, but install them only on one board for each system. Right?
Should the Motor modules be Master/Slave or just Slave only?
Can we also build a RS232 to I2C interface module?
QuoteCan we also build a RS232 to I2C interface module? most mcu's have this ability anyway
Also Master modules should provide 5V power for the slave modules, right? ( I guess the Main MCU, the Sensor Module - maybe others too - need to have 5V regulators onboard to power the sensors and other devices connected directly tho the boards, not necessarily on the I2C bus.)
Can we also build a RS232 to I2C interface module? (I don't really want to change the tiny26 for something bigger just for the UART...)
Since I am working on a robot that will use a Tiny26 Modified Servo Controller, I will build this module until we decide on the DC Motor Controller characteristics. The ones I have showed are just samples, to see the possibilities. A small size board will be enough for the modified servo controller but not enough for a DC motor controller, unless we go SMD. I would really like to have the modules small.
robotx- i got a nooby Q. why would servo's need encoders?
A module that hasn't been mentioned in the list is an LCD driver module. I would like to do this module, starting with a basic alphanumeric LCD and maybe progressing to a graphical LCD.I'm just waiting to get a working LCD.
Are there small size AVRs that have both UART and I2C? Smaller than Mega8?
I will be using a PIC16F series chip to do it, since i have an ICD2 and nothing to program any other brand MCU.
FYI, you know it's possible to program AVRs without an expensive programmer? http://www.instructables.com/id/Ghetto-Programming%3a-Getting-started-with-AVR-micro/