Matrix user forums

can you explain why use this formula

Using ReadAsInt
and Humidity variable as an Byte (saves ROM).
Within a calculation box:
HUMIDITY = ADC1_VALUE * 7 / 50 + 5

Martin

Hi Martin
I used Floating point variable (HUMIDITY)
ADC1_VALUE (integer)
look that

and the character of sensor is

Thank you Martin yes I should use pull down resistors can you help me I use SY_HS_220 Humidity sensor PIC16f877A : ADC(1) for humidity sensor ADC1_VALUE:ReadAsInt() HUMIDITY = (ADC1_VALUE * 5.0 * 33.0) / 1024.0 in data sheet of sensor the output voltage is 2970mv for 90%RH And 990mv for 30%RH (2970-...

Hi Martin yes it is working but there is another problem when i want use keypad it is take number without press any key ( the connection of keypad is c1:PortD4 c2:PortD5 c3:PortD6 rowA:portC4 rowB:PortC5 rowC:PortC6 rowD:PortC7) I connect terminal of keypad without resistor between them and pins of ...

Thank you Martin I check circuit no short or open circuit and the Flowchart chip configuration is right (0x393A) and another look these photos http://cdn.top4top.net/i_897b2f8ac91.png this configuration in Topwin 2005 programmer http://cdn.top4top.net/i_897b2f8ac92.png and the simulation run without...

Hi everybody
I face problem with LCD it's just light and don't display any char
I am use Pic16f877a with config word 0x393a
simulation ok but when I run my device that's what happen

Thank you Martin The code failure to compile after put software stack instruction but i solved problem by modify the code to avoid stack overflow the simulation for this code on flowcode fin but it doesn't work in proteus 8 and when implementation on hardware the config word for PIC16f877A in my pro...

Hello
I have the same trouble in 16F877A
Serious Warning: Call stack usage exceeds:8!
Where & How I should put
ChipName=16F877A
ExtraLinkerParams=-swcs 6 2 ??
I Couldn't Open 16f877A.fcd
Thanks