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57 views

EMG signal from MyoWare board - sudden increase in output voltage

I am using the MyoWare muscle sensor from Advancer Technologies (this one) to obtain EMG signals from my forearm. I want to use it in a project where I will be checking if the muscle is flexed or not. ...
0
votes
2answers
144 views

Recording of sensory nerve evoked potential generated through skin-receptors [closed]

If we touch / give pressure to a skin, there are many mechano-receptors like meissner/pacinian corpuscles that produce action potential in neurons. I am in a need to detect those action potentials ...
0
votes
2answers
645 views

EMG, Muscle Sensor Arduino - Troubleshooting [closed]

I've been testing the EMG sensor below: http://www.ebay.com/itm/Muscle-Sensor-EKG-EMG-Developemt-Electronics-Module-Interface-Kit-For-Arduino/351850511727?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=...
0
votes
0answers
790 views

EMG amplifier using LM358

I came up with the following simple schematic in order to amplify the EMG signal and feed it to an arduino: simulate this circuit – Schematic created using CircuitLab The problem is that I ...
0
votes
1answer
558 views

How to get raw emg signal without offset

i try to build emg sensor + arduino from diy found on internet. every things work fine, but i want only raw signal for some bigger project not rectify. i do circuit as below and signal looks like ...
0
votes
1answer
193 views

How to ground the below circuit when I use USB?

I am constructing the circuit given below: The problem, however, is that when I connect the electrodes to my skin, I get a mild shock. I am powering the Arduino using an USB cable. I connected the ...
0
votes
1answer
296 views

Arduino ECG sputtering out totally random values

Hello StackExchange community, I have encountered a problem in my ECG/EKG design. I am trying to create the ECG using Arduino as a microcontroller to send/retrieve heart rate measurements via ...
0
votes
1answer
2k views

Simple circuit with operational amplifier (intended to be ECG) not picking up actual readings, only noise

I have a major problem. A couple days ago, I ran into an issue with my circuit. The problem is that I can only get noise from my ECG, not actual readings. I'm using opamp LM358, not opamp OP37 like ...
2
votes
1answer
2k views

Arduino - Cannot get ECG readings from heart, but I do when I poke at the leads

I have a minor issue with my ECG. When I poke at the leads, I get a reading. But when I hold the leads or place it near my heart, I don't get anything. I'm pretty sure this is hardware related, but ...
-1
votes
1answer
350 views

Measuring pulse using an EMG device

For another project I once bought the following EMG sensor kit: https://www.sparkfun.com/products/11776 Now, I would like to know if it is possible to measure the heart pulse using that EMG sensor ...
0
votes
2answers
2k views

How to measure microvolts of biopotential with Arduino?

I'm new to electronics, so don't judge me harshly. I need to measure the biopotential of a human. I will place special electrodes on the skin, and need to measure the voltage on it. Ordinarily, the ...
0
votes
1answer
2k views

ECG Shield electronic circuit explanation

I have this electronic circuit which is from a shield for the Arduino which allows me to collect ECG signals. However I do not understand what is happening. I am familiar with op-amps and amplifiers ...
2
votes
4answers
1k views

sense movement of muscles via electronic signals

I'd like to sense when a certain muscle is contracting or releasing, for instance the movement of one finger over another. Is there any existing work to do this with sensors / arduino / galvanic ...
3
votes
1answer
673 views

What are some techniques to lower noise on a mixed-signal analog-to-digital converter board?

I'm building a 24-bit ADC board for Arduino that can sense microvolts (biological signals). What are some good techniques to lower the noise that will negatively affect the ADC resolution? What I've ...
1
vote
1answer
447 views

Arduino ECG and GPRS shield compatible? And working with battery?

I'm new to this whole arduino development things, so please dont punch me for my questions smiley But arduino looks really great, so I want to increase my knowledge and start with a projekt: I want ...