This log is about the launch of a HealthyPi device, from the same time that made HeartyPatch.

We released HealthyPi 4 on Crowd Supply in 2019-2020 and we have a great campaign. However, during the pandemic induced chaos that was going on, we faced major supply chain issues for critical components of our design. We started working on an alternate design with mostly discrete components for things such as power management ICs and specific TI chips that were in short supply. 

We then decided to the change the entire design while we're at it and thus was born HealthyPi 5. Here is where it will be launched on Crowd Supply (sign up for updates if you wish to know when the campaign in live).  The new specs of the HealthyPi:

• RP2040 main microcontroller
• ESP32C3 RISC-V module with BLE and Wi-Fi support
• MAX30001 analog front end for ECG and respiration measurement
• AFE4400 analog front end for PPG
• MAX30205 temperature sensor via onboard Qwiic/I²C connectors
• 40-pin Raspberry Pi HAT connector (also used to connect our Display Add-On Module)
• 1x USB Type-C connector for communication with a computer and programming the RP2040
• 1x USB Type-C connector for programming and debugging the ESP32 module
• Onboard MicroSD card slot
• On-board Li-Ion battery management with charging through USB

We also now have a TFT display for the first time to preview signals and to use the device as a standalone data acquisition system, no need for a Raspberry Pi. We still kept the name HealthyPi since it is still compatible as a Raspberry Pi HAT and plus now also it also runs on a Raspberry Pi chip !

Here is a photo of our current prototype of our display addon board and our "pro" carrier board. 

Follow more development on Crowd Supply, we will keep posting updates here as well.