v0.9-alpha

This pre-release v0.9 features an experimental position control which uses VBsum as a position estimation.

PIC v0.9

• Added EEPROM write function to command interface.
• Added optional experimental position control using sum of BEMF VBsum instead of constant time position control.
• Added PICerrno in status response.

ESP v0.9

• Added EEPROM write function: <IP>/EEwrite?addr=<aa>&data=<dddd> writes 'uns16_t <dddd>' into PIC EEPROM address <aa>.
• Added error messages in web-UI and customize.js

Web-UI v0.9

• index.html: Displays PIC and ESP error messages
• customize.js: Definitions of error messages

Documentation
Update to v0.9

Still under development:

• Enhanced position detection

v0.8-alpha

This pre-release v0.8 features a data logger which measures motor current and Back EMF voltage with up to 1024 data points.

PIC v0.8

• Added logdata g_bemf_log[1024] (recording V_BEMF) and g_curr_log[1024] (recording the motor current of the last MOVE or HOME travel).
• Added new command "LogData?" to transmit logdata to ESP.
• Added experimental g_vbemf_sum (integral of speed x dt ~ distance?)

ESP v0.8

• Added data logger: <IP>/logdata? reads g_curr_log[] and g_bemf_log[] from PIC and writes logdata.csv file into ESP file system.
• Added VBsum to [Info] for testing BEMF sum-up for position control (value of g_vbemf_sum).

Still under development:

• Enhanced position detection
• Documentation

v0.7-alpha

This pre-release v0.7 corrects a few problems that were observed during the field tests:

PIC v0.7

• Removed the IOC (interrupt on pin change) and CCP (capture/compare/PWM).
• PWM is now generated by the 16 bit PWM module
  • PWM1SaP1out is used to drive the H-bridges, its falling edge (H-bridge OFF) causes ISR to read VBEMF.
  • PWM1SaP2out falling edge causes ISR to read the motor current 2 ms after H-bridge ON.
• Added 2 minutes timeout when homeing (v0.6.1)

ESP v0.7

• Added 'MQTT publish' with status information (motor current, temperature, positions, etc.)
• Added WiFI signal strength to "Info"

WebUI v0.4

• added optional script customize.js
  • When uploaded into the ESP filesystem it replaces some default headers and labels by your own texts
    • Change title (e.g. 1st Floor, to differentiate between several devices)
    • Replace valve identifiers (VZ1, VZ2,..) with more meaningful names.

Still under development:

• Evaluation of the back EMF (measurement already possible)
• Documentation

v0.6-alpha

This pre-release enables the basic functions to be executed

• Execution of the HOME, MOVE, STATUS, INFO, SAVE (WLAN settings) commands via the web interface
• OTA update of the ESP and PIC firmware
• Current monitoring of the drives for HOME and MOVE.
• Positioning via time control

Still under development:

• Evaluation of the back EMF (measurement already possible)
• Documentation

Full Changelog: https://github.com/deklaus/OpenValveControl/commits/v0.6alpha