... :mrgreen: My GitHub [ 2019 New Year Resolution! ] https://github.com/tlfong01/mcp23x17/ AliExpress MCP23S08/008 https://www.aliexpress.com/store/product/Free-Shipping-MCP23S08-E-SS-MCP23S08-I-SS-MCP23016-I-SO-MCP23017-I-SO/1395137_32247127139.html https://www.aliexpress.com/item/5pcs-lot-MCP23008-E-P-MCP23008-E-P-DIP-18-IC/32836410885.html?spm=2114.search0104.3.14.bfb84807dgjyj1&ws_ab_test=searchweb0_0,searchweb201602_5_10065_10068_319_10059_10884_317_10887_10696_100031_321_322_10084_453_10083_454_10103_10618_10307_538_537_536,searchweb201603_1,ppcSwitch_0&algo_expid=a1316457-aa8d-45af-8f15-ed86eca01c94-2&algo_pvid=a1316457-aa8d-45af-8f15-ed86eca01c94 ...

... pieces. The weight sensors are already little tiles. You stick the tiles, say 16, on a printed circuit board, and extend the wires to your Rpi and MCP23008. You then place a thin sheet, say plastic, over the whole thing, to make a carpet. The resulting carpet should be thinner than 1cm. MicroChip ...

... Reset ESP 2. Fortmat (won't erase firmware) -- *** Blinky2018oct2301c tlfong01 2018oct23hkt2150 *** -- -- *** Debugging notes *** -- Debugging ... -- https://github.com/nodemcu/nodemcu-firmware/tree/master/lua_examples/mcp23008 -- http://www.electronicwings.com/nodemcu/nodemcu-gpio-with-esplorer-ide ...

... functions and full code (204 lines) below. -- *** Blinky2018oct2201a tlfong01 2018oct22hkt1541 *** -- function printTitle(title) function printTitleNum(title, ... -- https://github.com/nodemcu/nodemcu-firmware/tree/master/lua_examples/mcp23008 -- http://www.electronicwings.com/nodemcu/nodemcu-gpio-with-esplorer-ide ...

... test blink program blinky2018oct1121.lua *** -- *** Blinky2018oct1120 tlfong01 2018oct11hkt1527 *** -- -- *** Contents *** -- -- References -- ... -- https://github.com/nodemcu/nodemcu-firmware/tree/master/lua_examples/mcp23008 -- http://www.electronicwings.com/nodemcu/nodemcu-gpio-with-esplorer-ide ...

... loading firmware etc. ESPlorer v0.2.0-rct by 4refrOnt test record tlfong01 2018oct09hkt1252 PORT OPEN 115200 Communication with MCU..Got answer! ... -- https://github.com/nodemcu/nodemcu-firmware/tree/master/lua_examples/mcp23008 -- http://www.electronicwings.com/nodemcu/nodemcu-gpio-with-esplorer-ide ...

... 3V3 circuits. （ 5V I2C MCP23017 ) RE: RELAY MODULE KY-019 5V Post by tlfong01 » 2018-Sep-05 Wed 11:22 am https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=77158&start=375#p1361576 ... and all have fun together. Update 2018sep14hkt1638 PS - I learnt about MCP23008 when reading MagPi ...

I did not read your code because I always find it hard to read other people's code. But you do remind me that when I played with MCP23008/017/S08/S17, I noticed that mcp23xxx seemed to hang from time to time, with unknown reason. MCP23017 PROBLEM Postby JonasE » 2014-Nov-09 Sun 4:52 pm ...

... interrupts on the MCP23017 side and the program seems to hang. ... 4. tlfong01 mentioned he had to reset his mcp23017 from time to time. Perhaps ... read other people's code. But you do remind me that when I played with MCP23008/017/S08/S17, I noticed that mcp23xxx seemed to hang from time to ...

... #!/usr/bin/python3 # KY019 DS3231 Real Time Clock Test Program V1.5 tlfong01 2018jul25hkt2230 # *** Short Description *** # 1. read, write, print ... = 0x68 dayRegAddrByte = 0x03 # *** Device Functions (copied from MCP23008 test program example) *** def readDvRegOneByte (i2cPort, dvAddrByte, ...

... using MCP23017 - DougieLawson 2017may18 https://www.raspberrypi.org/forums/viewtopic.php?p=1164047#p1164164 The way I drive relays is to use an MCP23008 or MCP23017 I²C chip as they are safe at 5V. Programming those I²C chips is trivial.