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Hi,
Can somebody tell me if I need a licence to use the ds18b20 commercially, I was told that you need a licence to use the DHT11 and DHT21 temperature sensors but not the ds18b20 ?
Thanks
Rizzy
Hi,
I am about to start a project that uses a pic18f24J11 chip which is 3.3v, also I have a sim800L gsm board that is 3.3v and I believe I can connect this board directly to the micro-controller pins, however I have a 5v i2c LCD display now will the i2c line need some sort of level shifter...
Hi Andre,
No data sheet came with the floodlight, just instructions how to wire up to 230v , I have removed the 230v driver, I just have the Smd led.
Thanks
Rizzy
Hi Sunny,
All I know is that it is a 10 watt smd, it was a purchased 230 volt floodlight but I want to run it off a battery for a portable work light, could I hook it up to my bench power supply and slowly turn up voltage and current to see how it performs, I have been told that they are 12...
Hi,
I have a 10 Watt smd led and I want to drive it from a 12volt lead acid rechargable battery, does anybody have a circuit please or an ebay link to a suitable driver.
Thanks In Advance
Rizzy
Hi,
Could somebody help me with this i2c module please, I am trying to follow the data sheet and everything seems clear until I get to the read data part, basically I know there are 2 registers for each of the x, z, and y coordinates, I just don't know how to read them and get them into...
Hi,
I am new to micros really and I have chosen this Light Sensor to try and learn, the first thing I need to do though is get the device powered up and I need to find out how to write to the pic registers, I bought an online course but it never mentioned the registers, I need to send a 03h to...
Thanks for the extra info guys, if the contactor interfered with the LCD is there an easy way to stop it, could you shield the ribbon cable with foil and earth it or something ?
cheers all again
Rizzy
Hi Guys,
Thanks for your replies, yes it is a standard 4 x 20 lcd module, the unit is a switching timeclock using a pic 16f877A chip, all this will be inside a steel enclosure with heating contactors in etc, however i would like to have a metal panel on the front of the enclosure with the lcd...
Hi,
I would like to make my project separate from the display panel, does anybody know how long the ribbon cable can be ? , can I run in to problems if it is too long ? , Do I need to amplify the signals somehow ? , I only need to make it about 12 inches really.....
Thanks In Advance
Rizzy
Hi Brad, sorry I have been so long replying I have been ill,
Yes that is exactly what I need to do, do you have a schematic or any info for that please ?
thanks
Rizzy
Hi Sunny,
The circuit I am building is to alert me to a mains power failure, so I need to charge the battery from the mains voltage so that I know it is definitely going to work, thanks for the reply though...
cheers
Acestu
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