Show Posts
Pages: [1]
1  Using Arduino / Microcontrollers / Re: ISP Bootloader onto ATMEGA328-AU + AVR Pocket Programmer on: May 05, 2014, 03:06:43 pm
Hi,

I was searching the same question as above, forget all the above!!!

You can use any arduino as an ISP to bootload the smd 328p-au at 5volt and 16mhz. (I used the arduino uno)

1. Upload the sketch Arduino as ISP.
2. Get the right connections of mosi, miso, sck, reset
3. Choose in the board menu: Arduino Mini w/ ATmega328

If you get an error, your connections are bad.

Have Fun!!!
2  Using Arduino / Microcontrollers / Re: What crystal do i use for 3,3volt 8mhz on: May 04, 2014, 10:34:39 am
Quote
Have you burned the proper fuse byte values to tell the chip to utilize the external crystal?

How do i do this? What does that mean? Can you direct me to a good post or tutorial  about this?

I'm using my arduino uno as isp. And im trying to make a ATMEGA328-PU work on 3,3v with 8mhz crystal.
I got two 22pf caps on the crystal terminals...

When working on 5 volt with 16mhz, I just bootloaded the chip and could start programming.

Thanks for any help.
3  Using Arduino / Microcontrollers / What crystal do i use for 3,3volt 8mhz on: May 03, 2014, 10:17:53 am
Hi,

I'm trying to make a board work on 3,3v and an 8mhz crystal with my chip from an uno board. As I didn't got my board working. I got back tot my breadboard.

Turns out my 8 mhz crystal does not work. (will not upload sketches) I got the TXC - 9B-8.000MAAJ-B - XTAL, 8.000MHZ, 18PF, HC-49S from farnell: #1842268.

Why doesn't this work, what crystal from farnell europe will work?

Can anyone help me?

Thanks!
4  Topics / Product Design / Re: PCB fabrication sites on: March 15, 2013, 12:28:39 pm
true.
5  Topics / Product Design / Re: PCB fabrication sites on: March 15, 2013, 12:21:56 pm
Hi,

I make my own PCB. Very Easy!!!

- I print my disign on inktjet fotopaper with a laser printer.
- Then iron it to Epoxy PCB material.
- Remove paper in water
- Etch The disign

PCB ready!!!! under 1 hour, costs are minimal.


6  Using Arduino / General Electronics / Re: Power consumption in voltage regulator on: March 15, 2013, 12:07:22 pm
Hi,

I use LE33cz or LE50cz from ST or others in the product family. They have a idle power consumption of 0,5 ma and low noise. Vin max is 20volt so it will protect your low voltage ic like the "atmega 328" whatever power supply you use.


greetz from holland.
Pages: [1]