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Although this is not directly related to the project, it IS related to how the stuff connects.

I noticed the AD8232 input does not have a SPI or I2C input/output. May I ask how one would receive the output from that eval board and wirelessly send the data?

Hello Joshua, sorry may be i'm late to reply and u've already figured it out all the way. but still replying as i hope it may help u or others somehow.

I'm not an expert and have never worked with this chip [AD8232] but it seems to be a beauty to me.

AD8232 EVALZ has an analog output [TP15] which can be directly connected to a microcontroller's built in ADC. and obviously u can use an arduino. as the ECG has frequency components of 1Hz to 100Hz, simple 10bit low speed ADC is good enough to capture it. most interesting part is the board uses single supply and the output is already level shifted [not sure - i hope so], so the signal will stay in between 0 - 3v.

AD8232 has built in opamp to imply low pass filter. They have built in configuration. but if u want u can utilize it in ur way through TP16, TP17. u may need some collection of SMD resistors and capacitors, as i see the board has lots of unused pads to provide flexibility to the user.

the internal instrumentation amp has option to imply high pass filter to avoid motion and unnecessary signals due to displacements of electrodes. however, it has internal circuitry to detect if the electrodes are fully displaced [TP12, TP13]. but u have to buy electrodes or design wearable electrodes if u want to use it on the body surface of the athlete while performing [creepy].

TP14 [fast restore] can be used to control the 'amplifier rail on' to stabilize the output for quick recovery after an abnormal signal [like lead-off].

TP18 -> gives an option for DC LEADs off detection and TP21 can be used to shut the chip down.

the RLD [right leg drive] will definitely help in noisy environment.

however, may be I am not right with all the above stuffs. if anyone finds anything wrong please reply back to let me know.

I loved this chip - except one limitation -> it has inputs for only two electrodes, means u can get only one lead combination at a time [LEAD I, LEAD II, LEAD III]. in my experience, i have seen most people having good signals [high QRS complex] for LEAD I, but few people has low LEAD I and LEAD II, but high LEAD III. so if he does not get good signals from one combination then he has to switch the electrodes manually for different combination. Now in a game running on, u cannot do that, right? and the device may show that u are struggling or something is wrong with the device :-p

These are all great points and I thank you for your input. I am editing my application accordingly

These are all great points and I thank you for your input. I am editing my application accordingly