on This would work for your application, I assume the thermistor is going to be immersed in the cup for this. 5 years ago 3 years ago Show me how I connect the temp sensor and the LCD please ! on I have managed to link to ICs together and get it working in bar and dot mode, the only problem i am getting is the LEDs are very dim, did you experiance this problem of have any idea what is limiting the voltage? 2 years ago This is the resistance at 25c which is around room temperature so you can check the resistance of your thermistor with a multimeter. In the link below have all the files needed for this project.Would have been nice to see the pinout of the LCD. If not, you may have to open it up and play with the potentiometers until it does. on The 3914 chips are rather unusual in that, instead of drawing the power through the chip, they instead sink into it, and are controlled by the allowance of current flow through the chip. 7 years ago You should be able to see several bars light up. on 5 years ago 7 years ago Seems to me that the 4th wire from the left depicted as black would be the RS lead and would connect to arduino pin 12 - not ground and the fifth lead - depicted as orange - would be RW - should go to ground not pin 12. Library. 3 years ago
Still working on it but - seems to me someone should have notice that after all these years and said something. 7 years ago 8 years ago I was trying to do it only using CMOS chips, the 7107 looks promising, but I don't like the large footprint of the chip and the external circuitry, so I may go for a picaxe 08m instead. With that change I get the indoor temp displayed on the LCD but no outdoor temp. on Hi, could you please post the code to use the DS18B20 for the receiver indoor temp instead of the lm35. About: My hobby is electronics since childhood. I wouldnt recomend stripboard since the whole circuit would be huge and take a lot of editing (althoguh I did use stripboard to hold the DIL sockets). 7 years ago
Also, there is a confuse in the transmitter circuit, because you used two temp sensor (LM335az) on both TX and RX circuit.
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