>NAME >VALUE 2.21Kohm C A+ >NAME >VALUE VSMB294008G IR LED 940nm angle 14 degrees response 15nS 70mW/sr@100mA 260mW/sr@500mA clear appearance 2 1 A C 2.3x2.3x2.8mm high speed IR 940nm 7° smt untinted plastic package >Value >Name QSB363GR phototransistor IR >75%@780~1080nm angle 12 degrees 15uS response 0.14mA@(0.005mW/cm^2) ~ 1.5mA@(1mW/cm^2) black appearance C E 1 2 <b>Single Pads</b><p> <author>Created by librarian@cadsoft.de</author> <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>SMD PAD</b> >VALUE >NAME <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >VALUE >NAME <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>THROUGH-HOLE PAD</b> >NAME >VALUE <b>SMD PAD</b> >VALUE >NAME THROUGH-HOLE PAD SMD PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD THROUGH-HOLE PAD SMD PAD >NAME >VALUE <b>THROUGH-HOLE PAD</b> <b>Wire PAD</b> connect wire on PCB <b>THROUGH-HOLE PAD</b> <8-bit Microcontrollers - MCU 8-Bit MCU 14KB Flash 1KB RAM 256B EE CIP</b><p> <author>Created by SamacSys</author> <b>(SS)28-Lead(SSOP)</b><br> >NAME >VALUE <b>8-bit Microcontrollers - MCU 8-Bit MCU 14KB Flash 1KB RAM 256B EE CIP</b><p> Source: <a href="http://ww1.microchip.com/downloads/en/DeviceDoc/40001802B.pdf"> Datasheet </a> <b>CAPACITOR</b> >NAME >VALUE 0.1uF CAP, X7R, 0.1UF, 50V, 0603 >NAME >VALUE 10Kohm >NAME >VALUE 33.2ohm C A+ >Value >Name YELLOW 1 2 A C >VALUE >NAME >NAME >VALUE * * >Name >Value OPA350 OUT IN+ IN- V+ V- NC NC NC 1 6 4 7 3 2 8 5 >NAME >VALUE 332ohm * >Name >Value 2x P-Ch MOSFET Rohm QS6J1TR 1 3 D S 6 5 4 2 G 1G In- 2G In- 1D Vout 1S Vin 2D Vout 2S Vin 1.5A 0.7Vth <65ns <0.430ohm Rsd >VALUE >NAME * TI SN74LV14 APWRG4 1A 1 A Q VCC GND 2A 3A 4A 5A 6A 6Q 5Q 4Q 3Q 2Q 1Q 6x TTL Inverter Schmitt Trigger 2 3 4 5 6 9 8 13 12 11 10 7 14 >NAME >VALUE >VALUE >NAME >NAME >VALUE 15ohm 1/2W 1% 1206 Res Thick Film 1206 15 Ohm 1% 0.5W(1/4W) SMD >VALUE >NAME >NAME >VALUE 3ohm 1/2W 1% Pulse * >Name >Value 2x N-Ch MOSFET Rohm QS6K1TR 1 3 S D 6 5 4 2 G 1G In+ 2G In+ 1D Vin 1S Vout 2D Vin 2S Vout 1.5A 0.5Vth <22ns <0.364ohm Rds >NAME >VALUE 10uF 25V >VALUE >NAME >NAME >VALUE 10ohm 0.4W 1% >Name >Value + >Name >Value + >Name >Value + >Value >Name + 120uF 10V electrolytic >Value >Name + >Value 22uF 16V tantalum 0 1 2 3 4 5 6 7 8 9 10 11 0 N0 N4 N8 N12 N16 N20 N24 N28 N32 N36 N40 N44 BK0 BK0 BK1 BK1 BK2 BK2 BK3 BK3 BK4 BK4 BK5 BK5 LR0 LR4 LR0 LR4 LR0 LR4 LR0 LR4 LR0 LR4 LR0 LR4 CH0 CH2 CH0 CH2 CH0 CH2 CH0 CH2 CH0 CH2 CH0 CH2 PWR ; : % & | - + / * = DBS ESC 1 2 3 4 5 6 7 8 9 0 DBS 1 N1 N5 N9 N13 N17 N21 N25 N29 N33 N37 N41 N45 BK0 BK0 BK1 BK1 BK2 BK2 BK3 BK3 BK4 BK4 BK5 BK5 LR1 LR5 LR1 LR5 LR1 LR5 LR1 LR5 LR1 LR5 LR1 LR5 CH0 CH2 CH0 CH2 CH0 CH2 CH0 CH2 CH0 CH2 CH0 CH2 EMG Q W E R T Y U I O P RTN EMG q w e r t y u i o p RTN 2 N2 N6 N10 N14 N18 N22 N26 N30 N34 N38 N42 N46 BK0 BK0 BK1 BK1 BK2 BK2 BK3 BK3 BK4 BK4 BK5 BK5 LR2 LR6 LR2 LR6 LR2 LR6 LR2 LR6 LR2 LR6 LR2 LR6 CH1 CH3 CH1 CH3 CH1 CH3 CH1 CH3 CH1 CH3 CH1 CH3 EMO A S D F G H J K L FRN " EMO a s d f g h j k l SML ' 3 N3 N7 N11 N15 N19 N23 N27 N31 N35 N39 N43 N47 BK0 BK0 BK1 BK1 BK2 BK2 BK3 BK3 BK4 BK4 BK5 BK5 LR3 LR7 LR3 LR7 LR3 LR7 LR3 LR7 LR3 LR7 LR3 LR7 CH1 CH3 CH1 CH3 CH1 CH3 CH1 CH3 CH1 CH3 CH1 CH3 SFT Z X C V SPC B N M < > !! SFT z x c v SPC b n m , . ? Some symbols not here, e.g. #@$^~\[]{}()_` are in emojis; smile key, frown key, emoji key 48 Keys; Spatial arrangement 12 Columns, 4 Rows Identification enumeration N is zero-based, Row-first, up-to-down, then column left-to-right Logical scan organization 6 horizontal chunkly 2-column Banks Each Bank is 2 columns of 4 LEDs, thus 8 LEDs per Bank; Bank select is 1of2 LED power (+ supply) Bank select: LBi=Bank for one of those 6-groups of LEDs, i=0..5 (6 Banks) Each LED (within Bank) has separate ground return; Return select is 2of2 LED power (ground supply) Return select is also 1of1 Phototransistor (PT) power (ground supply) (PT + supply constant) Return select: RTj=open-collector drain ground return, j=0..7 (8 (LED/PT)s in each Bank) PBk=Phototransistor (PT) sense Bank, k=0..5 (corresponds to LBi) Usage: RTj+LBi selects LEDn power; RTj+PBk selects PTn power and input to ADC LB0 (sig) LED 0s' RETURNS LED 1s' RETURNS LED 2s' RETURNS LED 3s' RETURNS LED 4s' RETURNS LED 5s' RETURNS LED 6s' RETURNS LED 7s' RETURNS BANK 0 (CE V+) BANK 1 (CE V+) BANK 2 (CE V+) BANK 3 (CE V+) BANK 4 (CE V+) BANK 5 (CE V+) > > > > > > > > > > > > > > < LED PWR BANKS (sig/hi) (6) On MCU reset, these go low without software intervention; important to avoid stuck-on LED damage. RTn HI ==> OC RETURN TO GND (8) SENSE HI-TO-LO IMPEDANCE BUFFER (unity gain) +3.3V GND PHOTO SENSE OUT TO A/D; ADC Z < 10Kohm > PT IN; NEEDS Z>100Kohm INPUT KEYCODE OUT J1003=TXD 9600/8N1 POWER IN J1000=+3.3V J1001=GND icsppc icsppd circuitgnd circuitv+ vppres PROGRAM IN J1905=CsppC J1904=CsppD J1903=VssGnd J1902=VddCkt J1901=Vpp/Res LEDs FOR LIGHTPIPE KEY CAPS LEGEND DSD KEYPAD Ben Koning Redwines Garage Schematic 2-Aug-2021 Rev SC=3 TEST/DEBUG /reset /SCL SDA/ GND +3.3V TEST (sig) > > > > < < > < < < < < CPC/ CPD/ < < PHOTO SENSE < < < < < < < < < < < < < < < < < < < < < < < < < > > > > > > +3.3V GND pin 1 cath - pin 1 cath - pin 1 cath - pin 1 cath - pin 1 cath - pin 1 cath - pin 1 cath - pin 1 cath - pin 1 cath - pin1 cath - pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + pin 2 ano + COOL WHITE lightpipe illuminator Osram LW A673-P1S1-FKPL-Z LED1100 LED1101 LED1103 LED1104 LED1105 LED1106 LED1107 LED1108 LED1109 LED1102 5.5mm 18AWG insulated wire pairs to elevate height of each LED. Each LED's emitting area sits inside a recess (partial hole) in the outer hull acrylic. PROGRAM LB5 LB0 RT0 RT7 Scan pattern (this is just for an example; the actual algorithm is much more sophisticated): --- Neighbor table: Domain=keyN; Range=8 entries of other keyN values, or 0xFF to mean none (for edges) --- INITIALIZE: DRA:=OneThirdValue e.g. 300 Thresh:=TwoThirdValue e.g. 650 --- ReadADCWithGuaranteed70usTimeout: if timeout hit then just return middleoutput take the ADC input and invert so that higher# is brighter -> NormalledADC --- FindOutWhatADCSaw: if thresh if NormalledADC >= thresh then od=Bright else od=Dark --- ServiceStatistics: //maintain thresh if tp==DarkTestPhase then // update threshold to halfway between "dark" and "bright", where // "bright" is the fixed max we're liable to see, and // "dark" is a rolling average, safetyneverexceed MaxLiable, of dark-phase readings and not even lowest thrown out MAXLIABLETOSEE=900 set new thresh := (DarkestRollingAverage + MAXLIABLETOSEE) / 2 DarkestRollingAverage := (((DRA*32)-DRA)+NormalledADC)/32 // Incorporate into 32-item rolling average uint16 if DarkestRollingAverage > MaxLiable then DRA:=MaxLiable //sanity safety --- HandleMatch: Get Match Bucket Value for Current N if 0 then make it 1; if 1 then make it 2; if 2 then make it 3; if 3 then make 4; if 4 then { make it 5; look up neighbor(s) from table; for each neighbor, call HandleMismatch(neighbor) } if 5 then { make it 6; look up neighbor(s) from table; for each neighbor, call HandleMismatch(neighbor); set KEYDOWN(N):=TRUE; SendKeyEvent; } if 6 then do nothing (pin to 6) HandleMismatch: Get match bucket value for current N if 6 then make it 5; if 5 then make it 4; if 4 then { make it 3; if KEYDOWN(N) is currently TRUE then { KEYDOWN(N):=FALSE; SendKeyEvent; } } if 3 then make it 2; if 2 then make it 1; if 1 then make it 0 if 0 then do nothing (pin to 0) --- Scan pattern in a program loop: Repeat: N := 0 (key ID) For gr is 0 to 7 (Ground Return) For bk is 0 to 6 (Bank) tp = ! tp (Bright or Dark Test Phase; we alternate) Select RT(gr); Wait1us; Select PA(bk); Wait 1us // now bank selected plus PT is on and ->ADC if tp==true then Select LP(bk) // now LED is on if in Bright Test Phase Wait 10us ReadADCWithGuaranteed70usTimeout Deselect LP(bk) // LED off. Must be off in less than 100us FindOutWhatADCSaw -> od (ObservedDecision) ServiceStatistics if (tp == od) HandleMatch else HandleMismatch N++ Endfor bk Endfor gr KeepRepeating cap near mcu cap near OPA350 cap near MOSFETs < < < < < < < < < PT 0s' RETURNS PT 1s' RETURNS PT 2s' RETURNS PT 3s' RETURNS PT 4s' RETURNS PT 5s' RETURNS PT 6s' RETURNS PT 7s' RETURNS < < < < < < < < RT0 OC RT7 OC RT6 OC RT5 OC RT4 OC RT3 OC RT2 OC RT1 OC +3.3V GND GND +3.3V < < < < < < < < RT0 (sig) RT1 (sig) RT2 (sig) RT3 (sig) RT4 (sig) RT5 (sig) RT6 (sig) RT7 (sig) RT6 RT7 RT5 RT4 RT3 RT2 RT1 RT0 LED SUPPLY BANK 0 LED SUPPLY BANK 1 LED SUPPLY BANK 2 LED SUPPLY BANK 3 LED SUPPLY BANK 4 LED SUPPLY BANK 5 RETURNS 0 1 2 3 4 5 6 7 > > > > > > LB1 (sig) LB2 (sig) LB3 (sig) LB5 (sig) LB4 (sig) > > < PT SENSE ANALOG IN < < < !< LB5 LB4 LB3 LB2 LB1 LB0 ADC LEG TST > > > PT DETECT ANALOG IN LEGEND BRG OUT MOSFET far side cap +3.3V GND GND +3.3V GND +3.3V +3.3V GND +3.3V < < < < < < < < > > > > > > SENSE SELECT (1of6) cap near TMUX < > > > > < < < < < < < < > ultra low <0.001uA leakage bidirectional analog switch PBA0 PBA1 PBA2 PBA2 PBA1 PBA0 > > PHOTO BANK SEL ADDRESS (binary) (3) > > > > > > LB0 (DRIVE+) LB1 (DRIVE+) LB2 (DRIVE+) LB3 (DRIVE+) LB4 (DRIVE+) LB5 (DRIVE+) <~0.3V (bright) to >~2.8V (dark) full scale desire 0V to Vdd (3.3V) full scale for ADC mode Av=Gain=0ohm/0ohm=1X so that Vin=Vout; Zin=huge, Zout=low (the ADC set to clip at 3.3V ==> 1023/1024) VpreOPA VpostOPA V/3.3Vref N/1024ADCFullScale 3.0 3.0 0.909 931 2.8 2.8 0.848 868 2.6 2.6 0.788 807 1.5 1.5 0.455 466 1.0 1.0 0.303 310 0.7 0.7 0.212 217 0.3 0.3 0.091 93 WARNING: THIS HARDWARE ALLOWS LED PEAK DRIVE WITHOUT HARDWARE OVERTEMP PROTECTION ~70mA LED drive, or ~280mA if jumpers installed. The IR LEDs used here are rated at 100mA continuous; 500mA up to 100uS. SOFTWARE MUST LIMIT >100mA OPERATION TO LESS THAN 100uS, else the LEDs will be destroyed. The programmer must avoid non-deterministic code such as interrupts, poll loops of arbitrary time, and/or sleep/halt modes. +3.3V Open: ~66mA Short: ~280mA Open: ~66mA Short: ~280mA Open: ~66mA Short: ~280mA Open: ~66mA Short: ~280mA Open: ~66mA Short: ~280mA Open: ~66mA Short: ~280mA cap near MOSFETs cap near inverter LEGEND BRIGHT (sig) The legend LEDs are always lighted at a minimum value (in case of MCU halt/bug), and can be brightened to near 100% by setting the MCU output. You can PCM it for multi dim levels. > > > < resistors quench tailoff HV from high-side MOSFET OFF events < < < < < power entry cap 1 2 cap to filter high current switching noise main LED power cap > EUSART TxD < Since Version 6.2.2 text objects can contain more than one line, which will not be processed correctly with this version. Since Version 8.2, EAGLE supports online libraries. The ids of those online libraries will not be understood (or retained) with this version. Since Version 8.3, EAGLE supports URNs for individual library assets (packages, symbols, and devices). The URNs of those assets will not be understood (or retained) with this version. Since Version 8.3, EAGLE supports the association of 3D packages with devices in libraries, schematics, and board files. Those 3D packages will not be understood (or retained) with this version.