Step 2 – Program the controller (Upload the Code) MD_KeySwitch and MD_REncoder can be found at Ĭopyright (C) 2015 Marco Colli.Arduino Single channel relay timer circuit schematics. While timer is active (running or paused) the relay output is switched on. Second press resumes and long press ends the timer. Timer can be paused with a press of switch. Rotary encoder switch used to start the timer Rotary encoder allows setting the required timer value Arduino manages the display as a multiplexed POV refresh using direct I/O Relay output or relay module (commonly available on eBay and other suppliers) Rotary encoder with built in selection switch 7 segment 4 Digit LED display (similar to ) Implementation 2 - Arduino outputs directly runs LED segments State = S_IDLE // in case we get into trouble! TimeStart = millis() // approximate, but we have paused so accurate time is out the window If (SW.read() = MD_KeySwitch::KS_PRESS & setPoint != 0) V = pgm_read_byte(alpha + toupper(*p) - 'A') įor (uint8_t j = 0 j TIME_MAX_MINUTES) minutes = TIME_MAX_MINUTES Ĭase S_IDLE: // handle user input or just waitĬase DIR_CW: PRINTS(" CW") if (setPoint 0) setPoint- break Display the message specified for the specified duration in milliseconds Void displayMessage(char *pMesg, uint16_t duration = 2000) update the segments with the value specified and seconds for the display and countdown.Ĭonst uint8_t TIME_INTERVAL = 5 // smallest time interval in secondsĬonst uint16_t TIME_MAX_SP = ((TIME_MAX_MINUTES * 60) + 59) / TIME_INTERVAL // max setting value the smallest time interval, in seconds. All time duration b=values for setup and storage are held in units of License along with this library if not, write to the Free Softwareįoundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA You should have received a copy of the GNU Lesser General Public Lesser General Public License for more details. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. This software is distributed in the hope that it will be useful,īut WITHOUT ANY WARRANTY without even the implied warranty of Version 2.1 of the License, or (at your option) any later version. License as published by the Free Software Foundation either Modify it under the terms of the GNU Lesser General Public This is free software you can redistribute it and/or MD_KeySwitch and MD_REncoder can be found at GitHub - MajicDesigns/MD_KeySwitch: KeySwitch Digital Input Library - SUPERCEDED - See README Revision HistoryĬopyright (C) 2015 Marco Colli. While timer is active (running or paused) the relay output is switched on.Timer can be paused with a press of switch.Rotary encoder switch used to start the timer.Rotary encoder allows setting the required timer value.Arduino manages the display as a multiplexed POV refresh using direct I/O.Relay output or relay module (commonly available on eBay and other suppliers).Rotary encoder with built in selection switch.7 segment 4 Digit LED display (similar to LED Display 7 Segment 4 Digit 0.56 inch Common Cathode Super Yellow).Implementation 2 - Arduino outputs directly runs LED segments Hardware requirements Relay timer - User settable timer controlling a relay output The 4 digits 7 segments display is a HS410561K-32, as per my research it is a Common Cathode LED display.Īs a new member of the forum, I cannot make any attachment. The rotary switch has 4 connections: GND, +5v, SW, DT, CLK I guess the multiplexing of the LED’s is not correct, but at which level? the LED spec? the cabling? Turning clockwise and click on the push button: it starts counting (unreadable of course). Turning counter clockwise and the display changes and stops, I guess it gets to the lowest value. I turn the rotary encoder and the display changes (but unreadable): Turning clockwise and I can see the display changes. I unplug D12, D13, A0 to A5 and the proper segment (a, b, c, d, e, f, g and dp) turns off, so the segment connections are OK. I unplug the D4 pin of the Arduino and the leftmost digit turn off, unplug D5 and the next leftmost digit turn off, so on for D6 and D7, so the common cathode connections are OK. It compiled without any error and loaded the code into the Arduino. I copied and loaded the code from Marco’s listing into my Arduino Nano.
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