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changelog.md

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New version 1.3 :

alt text

  • Compatible with HKL-5M03 or HKL-PM03, or with 5V version (HKL-5M05 or HKL-PM05)
  • Compatible with 1000 or 900 mil ESP32 board width

New version 1.4 :

alt text

  • Input power can be 5V to 12V
  • 5V Jumper + 3.3V exposed copper cutout

New version v53 rev 1.19 :

alt text

  • Complete rebuild
  • All part can be assembled at JLPCB
  • Costs rise to 25$ / board (ESP not included, shipping included)
  • Fix issue [#5] (#5)
  • Fix HLK-PM03 footprint
  • Change L9110s chips (the old one was not available anymore)
  • change version number to real job

New version v54 rev 1.34 :

  • Change 230V input socket with screw
  • Fix regression in HLK-PM03 footprint
  • Change resistors to 1.07 ohm

New version with DC input power (4.9-18 V 5A - usb and DC 2.5/6.3 plug):

alt text

New version v54 rev 1.39 :

  • fix CH6 input shorted to CH7/8 BEMF #27

New version v55 rev 1.45 :

  • Add operational amplifier to ADC inputs alt text
  • Easyeda project getting public

New version v57 rev 1.48 :

  • Replace the 1.07R with 2 ohms
  • Custom resistors for BEMF (exposed layer to cut out)

New version v58 rev 1.49 :

  • Replace the RJ11 with screw terminals ( the RJ11 was too specific for "HmIP-VDMOT") (look at VdMot wiring)
  • Make the board compatible with all kind of motors (2.5 to 6V)
  • The easyeda sources are not available anymore (more than 50 developpers has anounced and nobody make a public commit since 3 years)

New version v59 rev 1.35 :

Better BEMF :

  • Complete new concept of sensing with no more troubles with resistors to GND image

Remove of AC input :

  • That was dangerous
  • The cost of HKL-5M was 3.8$ instead of 0.5$ for the new XL1509 module

image

  • With XL1509 module, You can adjust power of motors between 3.3V to 37V (recommended max 12V as not tested)
  • Everybody has an old AC/DC 1A charger
  • JLCPCB was charging a lot of shipping with the wheight of HKL module
  • New DC power input : DC Power Receptacle 2mm 6.4mm + Screw terminal

image

Motor DC :

  • input can be 3.3V to 12V
  • a new AMS1117-3.3 powers the ESP32 board

Better PCB :

  • Separate 3.3V power of ESP32 board from motors
  • Capacitor added to regulate peaks in power
  • Via shielding
  • Power isolation on bottom side
  • Smaller design (126x70mm instead of 126x80). The M4 holes are compatible.
  • Lower the price of all components (jlcpcb price soldered)
  • use R0402 footprint if possible

ESP32-C3 :

  • ESP32-C3 supermini footprint added
  • ESP32-C3 costs 2.4$ instead of 3.8$ for nodemcu devkit

OneWire :

  • Add 3 onewire XH2.54-3P connectors
  • Can get input temperature and output temperature of the heating circuit.

Studies :

  • The XL9535 shift register cost the same as 2x SN74HC595, but the esphome code is very new and move to I2C is not compatible with esp-c3 supermini
  • The Mini L298N module instead of L9110 soldered is approx the same price (0.7per channel out of 0.52 + resistors)
  • Add more channels : if 12, this needs of another opam

V59 : image