Had just begun to learn microcontroller is not very good, I want to ask a bosses, I want to make a digital display thermometer with hole hole plate, according to the pictures the ds18b20 receives P1.4 pin of MCU and the power of LED lamp was burned out, why ah, I use the computer plug in single row to MCU power supply, how to answer is right?

CodePudding user response:

Power LED is tricked into chicken egg plate? Unless you jump line will burn sensor is wrong, or don't usually burned LED;
Device is naturally targets according to the drawing pin connected circuit, speculation could be wrong, you know about circuit is not very normal and according to the drawing pin, pin to clearly mark the serial number, such as a point, or the semi-circular tag pin order,

CodePudding user response:

Before other circuits should have no problem, then the temperature sensor is no problem, also can download the program, I posted the temperature sensor of the flat side facing you pick the GND on the figure on the left side of the foot, in the middle of the feet connect P1.4 feet, on the right side of the foot to VCC, then indirectly P1.4 foot and VCC a 4.7 k resistor is the lamp burned out, ask me what's the problem with the connection?

CodePudding user response:

reference 1/f, the wise know already should good karma response:

power LED is refers to the egg lie to chicken on the plate? Unless you jump line will burn sensor is wrong, or don't usually burned LED;
Device is naturally targets according to the drawing pin connected circuit, speculation could be wrong, you know about circuit is not very normal and according to the drawing pin, pin to clearly mark the serial number, such as a point, or the semi-circular tag pin order,

Before other circuits should have no problem, then the temperature sensor is no problem, also can download the program, I posted the temperature sensor of the flat side facing you pick the GND on the figure on the left side of the foot, in the middle of the feet connect P1.4 feet, on the right side of the foot to VCC, then indirectly P1.4 foot and VCC a 4.7 k resistor is the lamp burned out, ask me what's the problem with the connection?

CodePudding user response:

From the description clear, then, when the connection is confirmed? Principle and it is an organic whole, answered right won't occupy, something that connection has a problem, so the hole hole plate connection problems?

CodePudding user response:

Oh oh, seems to be short, now no problem, thank you,