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Need some driver ideas
I need to drive 12 sensors on the high-side. They require 9vdc and only draw about 1mA max each. Right now, there are 8 pins free on my uC. I'm looking to see how I can use the...
Tuesday, 23 August 2011 - 23:12
My first XMEGA project (from atmega)
I'm working on a project involving temperature measuring which needs some degree of precision. As a result, the 10-bit ADC on the atmega's aren't enough, so I have decided to try...
Tuesday, 23 August 2011 - 07:10
Erasing a device with bootloader
I have an at90usb1287 and I have been using the built in boot loader to flash the memory via usb. The problem is that I want to disable the CKDIV8 fuse, but the chip comes with...
Friday, 19 August 2011 - 17:06
Underground Temperature Sensor
A couple months ago I was here asking about a suitable temperature sensor that I can bury remotely underground. I have chosen a sensor and am going to use the AD592 with constant...
Thursday, 18 August 2011 - 16:23
AT90USB & RS-485 Schematic
I'm working on a personal rs-485 project for controlling display panels in a building. I've personally never done any rs-484 design work before, so this will be my first try at...
Monday, 15 August 2011 - 18:48
Customer blowing IO pin
Have an atmega325 on a canbus board that takes inputs from a joystick to control mobile equipment. One of our big customers had a special request to be able to change the CAN...
Friday, 5 August 2011 - 16:32
Wireless technology recommendation
I've been pondering about how to tackle a new project lately and it involves a wireless data transmission. After searching the internet (and digikey) I realized that there is a...
Thursday, 28 July 2011 - 18:01
Shifting a value into bit position 0
I have a device hooked up to PORTD of my uC that needs a serial input. Port D is connected to the device with 4 pins - SIN, SCLK, LAT, and BLANK. The rest of port D does IO for...
Monday, 25 July 2011 - 16:22
Underground Temperature Measurement
My dad is doing a bunch of DX geothermal installations starting next week and he wants to be able to measure the ground temperature. When he puts in a loop, he wants to stick...
Wednesday, 6 July 2011 - 21:03
Multiple rs-232 devices from 1 port
I have an atmega1284p with dual uart ports on it. What I need to do is use it to control 4 tv's via rs-232. I want the PC connected to one uart port to control the tv's and...
Tuesday, 28 June 2011 - 20:13
Does atmel sell a "dspic" equivalent?
I am looking for a more powerful 16bit uC that is in a DIP package for easy prototyping. Does atmel offer anything as such, or am I stuck with atmels fastest 8bit uC?
Thursday, 19 May 2011 - 06:44
General Program Flow and Timing (cool project)
Hey Guys, I am using an Atmega 328p (8mhz) as a fuel injection controller. This is my first 'real' project that does something of significance instead of just tinkering. My main...
Monday, 17 January 2011 - 10:18