I have some analog devices like LDR, temperature sensors, and other sensors and I want to use the readings of these sensors in my raspberry pi B+ , for that I need an ADC , to convert the analog signals to digital and then transmit them to the rpi. I've searched about it and got this IC name - MCP3008 , which is an ADC with
SPI interface, so I would require the
MCP3008 IC with the SPI cable. the problem is that, here in kolkata I cannot find any local electronic store that has this IC in their stock. I have to buy it from online stores like mouser.com or digikey.com, but they are too costly, nearly 42$ for just shipping 1 piece.
- Is there any direct cheap alternative of MCP3008 which is widely available?
- Is there any alternative circuit design that I can do without MCP3008 ?