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Looking for a freelancer to code firmware for our project

Lauraren

Looking for a freelancer to code firmware for our project which will use data from a MEMS and a load cell, initially testing  (if possible) with a nRF52 development kit.

Before starting it would be very usefull to have a rough estimating of energy consumption, knowing that we need to collect at a rate of 100Hz data from the 3 channel gyro and accelerometer and load cell and then send the data every second, if this is the best solution to group data without delaying communication intervals to longer ones.

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    Drop me an email with the MEMS and load cell devices you want to use, plus 832/810/840, or post them here. I'll give you a free estimate based on the many designs I have completed; I am freelance.

  • 0 in reply to hmolesworth

    Hi, thanks for the reply.

    We are developing a device that measures forces and inclination (angle).

    For this project a specific load cell has been developed and it will provide data from three channels (10000ohm resitance and the other two 5000ohm resistance), that will need to be amplified.

    Since we also need to measure the inclination of the surface on which the device is attached, we will choose a MEMS (depending on accuracy permitted by energy supply) to do this task.

    To have a preliminary idea of energy consumption and preferable chip (I do not know which could fit best between the 3 models you asked me).

    Data from these sensors will be collected at 100Hz and after doing some filtering /calculations we would need to send the resulting 100 x 5 float values at 1Hz via BLE to a smartphone.
    We would like to use a CR2032.

    As a first information that would help me decide, I would like an estimate only of the recording of the 3 force\s channels and the sending of all the values, both in terms of energy. I would also like to know if while sending the chip will also be able to do other tasks as recording from sensors.

    Sorry for not being able to be very correct technically, but I am looking for this type of help because my competences are on the mechanical part.

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  • 0 in reply to hmolesworth

    Hi, thanks for the reply.

    We are developing a device that measures forces and inclination (angle).

    For this project a specific load cell has been developed and it will provide data from three channels (10000ohm resitance and the other two 5000ohm resistance), that will need to be amplified.

    Since we also need to measure the inclination of the surface on which the device is attached, we will choose a MEMS (depending on accuracy permitted by energy supply) to do this task.

    To have a preliminary idea of energy consumption and preferable chip (I do not know which could fit best between the 3 models you asked me).

    Data from these sensors will be collected at 100Hz and after doing some filtering /calculations we would need to send the resulting 100 x 5 float values at 1Hz via BLE to a smartphone.
    We would like to use a CR2032.

    As a first information that would help me decide, I would like an estimate only of the recording of the 3 force\s channels and the sending of all the values, both in terms of energy. I would also like to know if while sending the chip will also be able to do other tasks as recording from sensors.

    Sorry for not being able to be very correct technically, but I am looking for this type of help because my competences are on the mechanical part.

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