I'm constructing a telemetry ckt that relays temperature data wirelessly thru' RF. I'm trying to use a IC like DS1621 from Maxim or Analog Devices' AD7818 for temperature sensing, coz it has integrated A-D conversion. I need to input the data into a ISM band RF transmitter, then recieve it and display it. Any ideas as how to go about it? Do i need to use a microcontroller? The 8051 perhaps? Can anyone help me wid the ckt diagram/schematic? Thx in advance..
Re: Need help with Telemetry/ Data transmission thru ASK or
nerdspot said:
I'm constructing a telemetry ckt that relays temperature data wirelessly thru' RF. I'm trying to use a IC like DS1621 from Maxim or Analog Devices' AD7818 for temperature sensing, coz it has integrated A-D conversion. I need to input the data into a ISM band RF transmitter, then recieve it and display it. Any ideas as how to go about it? Do i need to use a microcontroller? The 8051 perhaps? Can anyone help me wid the ckt diagram/schematic? Thx in advance..
Hi!
Is maybe not necessary to use a microcontroller! Take a look at this transmitter! **broken link removed**
It has also a EPROM mode, which means the transmitter sending a code, burned to the eprom, without any uController! So, maybe your goal would fullfill! Read the datasheet, browse the page for applications.
The needed parts, are not to much. But you can't bypass the RF matching network, if thinking in useabel reception ranges! And don't even forget the good, tuned gainfull antenna!! IT'S SO IMPORTANT!
k.. But when both the devices are SPI complatible slaves, does that make the job simpler? if yes how? Can i just use a SPI master and connect the Temp Sensor and the Transceiver to the master? Or is there any uC coding involved?
Re: Need help with Telemetry/ Data transmission thru ASK or
If both device is SPI slave, it can't work!
You need a microcontroller as SPI master to read temperature data and sent it to transmitter
you can use fewer chip if you use a microcontroller which equip with ADC, read the internal ADC value and sent it to transmitter, so a suggest you use AVR, ie ATMEGA8535
Re: Need help with Telemetry/ Data transmission thru ASK or
There's a problem.. The DS1621 and AD7818 series have inbuilt ADCs.. Can u help me with the schematics and code for the AVR uc, coz i have zero knowledge of AVR and ATMEL uc programming..