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I think I need a 1k resistor in series with the DQ and then I need some kind of RC ckt on the VDD. I saw a diagram somewhere. Let me take care of that first and then try it again.
If I wanted to convert to C:
if(val >= 0 && val <= 250)
{
C = val/2;
}
else if(val >= 403 && val <= 511)
{
C = (val - 512)/2;
}
when the temp drops below 32F then the values returned have an offset of 511.
The outside temps here dropped below 32F overnight and I could see the raw...
I bought some DS1620's in the SMT version and I run the same code that works fine for the dip version and I get different values.
The data sheet says:
Measures temperatures from -55°C to +125°C
in 0.5°C increments; Fahrenheit equivalent is
-67°F to +257°F in 0.9°F increments
TEMPERATURE/DATA...
I had a project I did a few years ago which read a couple DS1620's. I had a RST, CLK & DQ for each one. (In addition to the VCC & gnd, of course). I just realized I could have used the same DQ and CLK for each one and separate RST lines and as long as the RST is low on all but the one being...
That's good info. The cap says 35v so it's probably 12vdc for the supply.
1677489193
An image search just shows printed ckt boards.
I remember now, I got it from:
Parts Express
1677491245
It looks like you can go as high as 24v power supply input and it's an 8 ohm speaker.
YT Review
I can see which posts on the lower right are for the output speakers, and the small connector labeled 'L' & 'R', but what voltage is the VCC? I'm thinking it might be 12vdc.
It says Atmel MEGA328P - there was some other text under it but I couldn't make it out even under bright light with my magnifiers. I'll check the ebay listing where I bought it.
1658189522
I just checked the ebay listing and it says:
100% Brand New
- High quality board...
A few years back before they started calling the Atmega328p an 'arduino' I had several which I programmed with a bus pirate and never had a problem.
I used avrdude with this command:
sudo avrdude -c buspirate -C avrdude.conf +atmega328p.conf -P /dev/ttyUSB0 -p m328p $1 $2 $3
Here's the cheat...
I have a RE system which is 48vdc from the batteries/charge controller. I have a 48v to 5v/3.3v converter, a 48v to 24v converter and a 24v to 12v converter. I'm using the fuses to turn them on and there is a noticeable spark when I insert the fuse. Can I use a relay after the fuse to turn on...
I bought an embedded linux card (Technologic Systems TS-4600) and it came without the OS. So I burned an image on a microsd card and could not figure out how its supposed to be inserted in the slot. Do I have the wrong sd card? The manual wasn't much help: TS-4600
1651334521
ok, I figured it...
I'm developing a sockets client/server application (embedded linux using pthreads) where the server has threads already created for each client on the network. My question is: can I have a separate thread for each client's socket read and write that run independently (the socket can be read from...
As it turns out, I had the wrong ribbon cable on it. I had the Xilinx chip as part of a bigger project and the wires going to where I plugged the ribbon cable were flipped. Point being, I should have documented it because it had been so long since I messed with it.
Hey, thanks for the quick reply!
The TX pin is what CubeMX assigned: PA9 and I'm just using PB7 as the trigger pin.
1644010581
OK, I tried changing the scope probes and it still does the same thing.
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