Search found 9 matches

by MatejKovacic
Sat Feb 04, 2017 6:52 am
Forum: Geiger Counter
Topic: Getting garbage from FTDI
Replies: 10
Views: 21057

Re: Getting garbage from FTDI

I am not sure, but you can write the code to a chip with 1 MHz or 8 MHz settings. It could be you are writing it with 1 MHz clock settiing?
by MatejKovacic
Tue Jan 10, 2017 2:05 am
Forum: Geiger Counter
Topic: Getting garbage from FTDI
Replies: 10
Views: 21057

Re: Getting garbage from FTDI

Ho, I did not purchase the kit, I made it by myself. In fact, I am also using slightly modified board - it is one sided, and I am using some bricks. I programmed ATtiny chip with Arduino: http://www.ernstc.dk/arduino/2313.htm It seems, I need to modify a geiger.c code a little bit: After int main(vo...
by MatejKovacic
Sun Jan 08, 2017 11:26 am
Forum: Geiger Counter
Topic: Programming with Arduino
Replies: 3
Views: 13250

Re: Programming with Arduino

Are there any instructions how to do this?

I have followed this instructions, and compiled the Geiger counter software with Arduino:
http://www.ernstc.dk/arduino/2313.htm

However, it seems something is not working right.
by MatejKovacic
Sat Jan 07, 2017 2:28 am
Forum: Geiger Counter
Topic: Getting garbage from FTDI
Replies: 10
Views: 21057

Re: Getting garbage from FTDI

OK, I have found out that it is working, if I set baudrate to 1200.

However, in that case I am getting 8-times higher CPM than it should be.

Since I am not living in a nuclear reactor it clearly seems to be a ATTiny chip programming problem. :)
by MatejKovacic
Fri Jan 06, 2017 12:46 pm
Forum: Geiger Counter
Topic: Mightyohm Geiger Counter & Raspberry Pi
Replies: 14
Views: 72553

Re: Mightyohm Geiger Counter & Raspberry Pi

Hi, I have connected Raspberry3 to Geiger counter as you described, but when I connect RPi to a power, it doesn't power up. However, if i disconnect PIN 1 (3.3 V), then it powers up and I can ssh to it. Then of course, I cannot get any reading via minicom.. Please note that I have removed batteries ...
by MatejKovacic
Fri Jan 06, 2017 12:04 pm
Forum: Geiger Counter
Topic: Getting garbage from FTDI
Replies: 10
Views: 21057

Re: Getting garbage from FTDI

Huh, I have found something very interesting. If I connect FTDI cable to Geiger counter and USB, start cutecom and DO NOT turn on the Geiger counter, I am still starting to receive these garbage data. If I connect FTDI to USB only and not to Geiger counter serial interface, I do not receive any data...
by MatejKovacic
Fri Jan 06, 2017 11:49 am
Forum: Geiger Counter
Topic: Getting garbage from FTDI
Replies: 10
Views: 21057

Re: Getting garbage from FTDI

Actually, there are not only \0x00 characters, there are several other charcters (\0x80, etc.), but it pasted only NULLs. This is the hexdump contents of (part of) cutecom.log file: 0000000 0080 0080 8080 0080 8080 8000 0000 0000 0000010 0080 8000 0000 8000 8000 8000 8080 0080 0000020 0080 0080 0000...
by MatejKovacic
Fri Jan 06, 2017 10:47 am
Forum: Geiger Counter
Topic: Getting garbage from FTDI
Replies: 10
Views: 21057

Getting garbage from FTDI

Hi, just received my FTDI cable (TTL-232R-3V3 from Farnell), connect it to my Ubuntu Linux latop and rud sudo cutecom (by default only root has access to /dev/ttyUSB0. Settings: Device: /dev/ttyUSB0 Baud rate. 9600 Data bits: 8 Stop bits: 1 Parity: None Handshake (software and hardware UNCHECKED!) O...
by MatejKovacic
Fri Dec 23, 2016 1:44 am
Forum: Geiger Counter
Topic: Connection to RPi without FTDI
Replies: 1
Views: 11987

Connection to RPi without FTDI

Hi,

is it possible to connect Geiger counter to RaspberryPi (or it's clones) via pins without FTDI connector? Are there any instructions how to do this around?