Hi.. I have a phynode sensor tag with cc2650 , one more phywave cc2650 radio module that supports zigbee, 6lowpan, ble, etc.. and a PHYGATE...

Hi.. I have a phynode sensor tag with cc2650 , one more phywave cc2650 radio module that supports zigbee, 6lowpan, ble, etc.. and a PHYGATE ,ARM335x gateway. I want to implement a IoT system for reading the sensor data and sending it to the cloud with the following requirements: Read the Sensor Data using : 1. BLE 2. 6LOWPAN 3. Zigbee 4. Lora Send the same info to the ...

I would like to design a datalogger with a temp & humidity sensor. I would like to make the whole thing compact and self contained but never the...

I would like to design a datalogger with a temp & humidity sensor. I would like to make the whole thing compact and self contained but never the less accurate. Any pointers ? Thanks G

Hello, I am a software engineer coming from a more higher layer background (OOP, GUI-development), but now I will probably face an...

Hello, I am a software engineer coming from a more higher layer background (OOP, GUI-development), but now I will probably face an embedded software project. I would like to know if there exist software architectures, standards, guidelines etc. for the menue software in a sensor device. That is, the device consists of 3 or more keys to walk through a menu tree. The sensor device has a d...

We have N number of sensors in GSM and GPRS covered area. We want from these sensor to send their measurements on pre-defined times to a centre...

We have N number of sensors in GSM and GPRS covered area. We want from these sensor to send their measurements on pre-defined times to a centre for data collection. Sensor data length around 80bytes and each sensor as 4 byte long unique identification number. Sensors are build around AVR or PIC based controllers Time to time center (a PC) may send commands to one or multiple sensors to c...

I have a sensor I want to put on my wifi network. What is the cheapest easy way to do this. Prefer a solution that I can embed in my...

I have a sensor I want to put on my wifi network. What is the cheapest easy way to do this. Prefer a solution that I can embed in my electronics. thanks bob

Hi, I have an ATtiny261 microcontroller in my application, and I was thinking of making use of its built in temperature sensor. However...

Hi, I have an ATtiny261 microcontroller in my application, and I was thinking of making use of its built in temperature sensor. However I notice the accuracy spec is +-10 degrees C, which to me seems absurdly useless. Has anyone used it before? Am I misinterpreting the spec? Thanks, Mike.

What is the motion sensor that has the lowest power consumption? Distance is about 10 feet or so. Any ideas? Thank you, A

What is the motion sensor that has the lowest power consumption? Distance is about 10 feet or so. Any ideas? Thank you, A

Ok, when hooking up a sensor output to a/d input we want to minimize the ratio of RMS noise to the LSB value. I would think we want a sensor...

Ok, when hooking up a sensor output to a/d input we want to minimize the ratio of RMS noise to the LSB value. I would think we want a sensor with a high voltage output and a A/D with a high voltage input so that the LSB is well above the noise floor. Stand alone a/d's usually have nice high input ranges (e.g., Maxim 1271 with a +/- 10 Volt input), but many modern DSP and microcontroller A/D i...

Hi, I have been developing an application using a Microchip 18F452 with 40 Mhz clock. Unfortunately, it seems like the device is too slow for...

Hi, I have been developing an application using a Microchip 18F452 with 40 Mhz clock. Unfortunately, it seems like the device is too slow for the application and I need something faster. Hence I am asking for some recommendations. My application is the following. The processor is connected to an analog sensor. It needs to sample the sensor to a 10-bit digital value and transmit it bit-b...

Hello, I am trying to build a wireless sensor controller where the sensors are distributed and a central device is able to read the status...

Hello, I am trying to build a wireless sensor controller where the sensors are distributed and a central device is able to read the status of every node. My knowledge about wireless networks is novice at best. I was looking into zigbee and then got hold of TI's CC2500 development tool. I ran the demo but the distance from the sensor to the pc was too short for my application. I was abl...

I am looking for tactile pressure/force sensor with digital output that I could embed in my aaplication. That should sense small variation...

I am looking for tactile pressure/force sensor with digital output that I could embed in my aaplication. That should sense small variation in pressure/force put by finger on the object.Could anyone please suggest products of different manufacturers? thanks in advance

Where can I get a unit containing a fingerprint sensor, plus maybe a serial or USB interface? It is important that this should include...

Where can I get a unit containing a fingerprint sensor, plus maybe a serial or USB interface? It is important that this should include a development kit so that we can get at the bitmap images produced Alternatively a source for say the sensor on a PCB and some simple interfacing. We are aware of the MBF110/200 devices from Fujitsu, but rather buy a ready made module to save some time. ...

hi, How can we find out the short circuit / open circuit of a sensor or something else which are connected to the microcontroller's port...

hi, How can we find out the short circuit / open circuit of a sensor or something else which are connected to the microcontroller's port pin? Is there any algorithm available to check the fault of the line which will be implement into the software? Thanks with regards Tamilmaran s

Hello people, I'm wondering if someone can help me with internal interrupts. I'm using the PIC18f452 ADC to get a reading from a wall sensor...

Hello people, I'm wondering if someone can help me with internal interrupts. I'm using the PIC18f452 ADC to get a reading from a wall sensor (its an IR transmit receive circuit) which gives out numbers ranging from 0 to 500 (these numbers correspond to how far the sensor is from the wall). What I'm trying to do is generate an interrupt when the number is 250. I've thought about connecting ...

I've already asked this question on an electronics newsgroup (in case Jim Thompson wonders why I'm repeating myself!) but thought someone here...

I've already asked this question on an electronics newsgroup (in case Jim Thompson wonders why I'm repeating myself!) but thought someone here may have had experience with this situation. I have a draw wire displacement sensor which works at HTL logic levels (I have searched for the values for these "levels" without success). The supply voltage for the sensor will be 12V and I need to tr...

Hi, I am trying to build an ultrasonic sensor module to detect and measure the distance of an object, and got some problem :-) Problem: 1....

Hi, I am trying to build an ultrasonic sensor module to detect and measure the distance of an object, and got some problem :-) Problem: 1. Not sure whether the transmitter send sound or not. 2. Not sure, Receiver work properly or not. 3. Circuit and code was not tested. The configuration of my board is: a) AT89C52. Microcontroller. b) XTL freq. 11.0592 mhz. b) 40 KHz ultrasonic t...

Hi, Anybody has used motorola's e-field sensor measuring fuel?. Is it possible to explode the liquid with e-field? Thanks and best...

Hi, Anybody has used motorola's e-field sensor measuring fuel?. Is it possible to explode the liquid with e-field? Thanks and best regards, Rodrigo.

A transducer or sensor is connected to Force measurement unit. When force is applied to sensor, Sensor Developments Inc. PMAC 2000 Force...

A transducer or sensor is connected to Force measurement unit. When force is applied to sensor, Sensor Developments Inc. PMAC 2000 Force measurement unit displays the Force in Newtons. On back of PMAC 2000 unit, there is 9-pin I/O Connector. Some description of this connector is as follows: AOUT - is pin 4. GND is pin 3. AOUT + is pin 2. This I/O connector is used for Analo...

hi.. i want to develop an embedded system using a micro controller and a cmos sensor.. i have chosen atmega16 and c3088 sensor.. however I...

hi.. i want to develop an embedded system using a micro controller and a cmos sensor.. i have chosen atmega16 and c3088 sensor.. however I am certain that memory constraints will be a problem for storing the images..i am aware of avrcam and cmucam and realize that such a system is possible..however i cannot find a way around the memory problem..can someone please suggest some way to solve this pro...

I'm trying to implement temperature compensation on a Sensirion SHT11 RH sensor. I've got most of it up & going using a 16F628 +...

I'm trying to implement temperature compensation on a Sensirion SHT11 RH sensor. I've got most of it up & going using a 16F628 + *assembler* but I am having a hard time wtih the temp compensation - in particular - all of it! While I'm not looking for an exactly correct calculation, it'd be nice to be in the ball park. (Yes I know, how long is a piece of string....) From the data...