Note Division P1 P2 P3 P4 P5 P6 P7 P8 P1 P2 P3 P4 P5 P6 P7 P8 NOTEDIV1 NOTEDIV2 KEYBOARD_VOLTAGE VCF_IN LFO_IN FILTER_ENVELOPE. Filter.

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1 Jasper 0 EP Wasp Synthesiser lone Keyboard V_ENV_TRIG keyboard.sch N0 N N N N N Note ecoder N0 N N N Noteecoder.sch P P P P P P P P Note ivision P P P P P P P P NOTEIV GLIE_ GLIE_ Waveform Generators KEYOR_VOLTGE GLIE_ GLIE_ MIX_OUT EXT_UIO NOTEIV Noteivision.sch Waveforms.sch Master Oscillators N N NOTEIV NOTEIV PITH MO Oscillators.sch Filter LFO KEYOR_VOLTGE V and Power PITH_MO LFO_OUT VF_IN LFO_IN FILTER_ENVELOPE VF_OUT ExtudioInput V_IN V_ENVELOPE LFO.sch Filter.sch PowerV.sch Envelopes FILTER_ENVELOPE ENVELOPE_TRIG V_ENVELOPE Envelopes.sch ased on EP Wasp of Sheet: / File: Wasp0.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable Rev:.0 Id: /0

2 dditional decoupling caps Noise Generator Link Port onnectors 0.uF K R 0.uF IE uF K R0 0.uF I 0 nf Keyboardclock R K I 0 Scan_Reset LK 0 I SN_RESET 0 I LK Reset I I 00 I I is 00 on original schematic etter replacement is SEL_ SEL_ I 00 0 I I I I I I I O O O O O O 0 Tri State Interface F E I0 0 0 LK 0 LR 0 N N N N N N0 P TRIG TRIG' P TRIG TRIG' ' ' ' ' ' ' ' ' 0 E E' E' F F' F' LINK LINK Ribbon cable from centre of board to Link Port connectors on edge of P Extra pin for shielding F' E' ' ' ' ' TRIG' LINKPWR 0 P LINK F' E' ' ' ' ' TRIG' LINKPWR Link Ports are pin Mini IN. dditional pin can be used as power supply for other devices. 0 P LINK Keyboard Multiplexer ode Generator I 0 S S S S S S S S S S0 NOTE_WRITE IF 00K R 0 NOTE_RE I0 is on original schem Replaced with 0 TRIG I pf 0 I I_Y 0 0 I I_X 0 I I_Y I_X I_Y I_X I 0 I 0 I 0 I 0 I 0 R 0K dditional decoupling capacitors 0 0.uF 0.uF 0.uF 0.uF 0.uF 0.uF 0.uF 00K R pf R 00K I 0 pf 00K PR0 00K R K R0 0K PR Keyboard Sense R 00K 00K R I 0 K R 00K R K I R 0 p 0 d I 0 I 0 Note_Write NOTE_WRITE p d I 0 00K R nf V_ENV_TRIG Note_Read NOTE_RE Test instructions suggest selecting value of R0 when keyboard overlay applied Small trimmer PR0 allows for adjustment Scan_Reset SN_RESET E F G0# G0 F0# F0 E0 0# 0 0# SEL_ 0 SEL_ X0 X X X Y0 Y Y Y I 0 X Y VEE I_X I_Y E # # 0 0# 0 SEL_ 0 SEL_ X0 X X X Y0 Y Y Y I 0 X Y VEE I_X I_Y # G# G F# F SEL_0 SEL_ X0 X X X Y0 Y Y Y I 0 X Y VEE I_X I_Y P 0 0# 0 0# E0 F0 F0# G0 G0# 0 0# 0 # # E F F# G G# # 0 ased on EP Wasp of Sheet: /Keyboard/ File: keyboard.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable TOUH KEYOR 0 J Grounding point to stabilise keyboard sensitivity. Use with antistatic wrist strap Rev:.0 Id: /0 E F

3 R0 K LFO_RMP PITH MO control uf R0 00K djust symmetry of LFO S R0 K VR 0K lin R 0 R0 K IF 0 Original uses rev log M pot timing cap is 0nF R0 is K K R0 VR M rev log Reverse Log pot gives better frequency response IE 0 0 S LFO WVE I 0 I orrectly terminate unused inverter 0 K R0 K R K PR LFO_S LFO_ 00K R R0 K LFO_RN 0 LFO WVE K R I I 0 I 0 R0 K nf I 0 K R0 I 0 0.uF PITH_MO LFO_OUT With M Pot, uf timing cap and K charging resistor LFO range is from about 0.Hz to 0Hz ased on EP Wasp of Sheet: /LFO/ File: LFO.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable Rev:.0 Id: /0

4 wire link M R 0 nf V Envelope Generator ENVELOPE_TRIG LK I 0 I 0 K R K R pf I 0 p d 0 I I I 0 IF M Log VR ttack I 0 K R 0 S K R HOL Hold switch mod I 0 0 K R 0K R 0 I M Log VR I 00.uF R 00K Sustain/Rep. VR 0K R 0K R R K TR VR 0K Lin Switched Sustain/Rep. VR M R TR 0.uF 0.uF 0.uF 0.uF elay Repeat VR FilterEnvelopeGate p d I0 0 uf 0 M Log ontrol (Filter) Envelope Generator elay Repeat VR M Log VR ecay R K K R 0 I 0 I VR M Log ttack 0 0 IE 0uF I 00 ased on EP Wasp of Sheet: /Envelopes/ File: Envelopes.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable R0 K 0K R R K TR V_ENVELOPE FILTER_ENVELOPE Hold switch mod With S closed, once a key is pressed, the V is held open until the S is switched off. Use a toggle or latching pushbutton here. Rev:.0 Id: /0

5 Filter ontroller KEYOR_VOLTGE R K R K 0nF R K LFO_IN R K R K M Lin VR LFO Filter ontrol K R K R R0 0K M Lin VR Filter Freq 0K R M Lin VR Env Filter ontrol 0K R R 00K I nF R K I 00 TR K R R K K R0 TR FILTER_ENVELOPE K R Filterontrol Filter Uses LM00 dual OT in place of x 00 in original dded Notch filter (add HP & P) using a spare section if I as per Juergen Haible's Wasp Filter clone R K R 00K R 00K R 00K I 0 R K Notch I 0 0nF R K HighPass andpass LowPass 0.uF 0.uF VF_IN 0 0nF R0 K pf I 0 00K R0 R K R K K R 00 Filterontrol I nf R 00K IE 0 0 R 00K R K K R R K 00 V Filterontrol I nf IF 0 LowPass Filter Mode S VF_OUT 0 V uff_in 00 I uff_out V uff_in uff_out 00 I 0nF R K 00K R VR 0K lin ased on EP Wasp of Sheet: /Filter/ File: Filter.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable Rev:.0 Id: /0

6 VR 0K Lin 0K R 0K R 0K R R 0K 00K R 00K R 00K R K R Master Oscillators R K IE 0 0 R 0K K R R K V I IS THR TR end PR 0K K PR VO Separation Tune trim 00nF 0K R 0 R R V Octave ividers PWR_FLG 0.uF.uF p d I 0 p d I 0 0 0pF 00nF PITH MO IF 0 dditional decoupling caps Pitch K R 0 R VR K Lin PWR_FLG PWR_FLG V I IS THR TR 0 R0 R V 0.uF R 0.uF p d I 0 p 0 d I 0 0 X0 X X X Y0 Y Y Y X Y I 0 VEE N N NOTEIV NOTEIV 0.uF 0.uF 0.uF 0pF 00nF R 0 PWR_FLG ased on EP Wasp of Sheet: /Master Oscillators/ File: Oscillators.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable Rev:.0 Id: /0

7 N I 0 0 I I I 0 P P N I0 0 I 0 P IE I N0 N 0 I0 I 0 IF 0 0 I G G 0 I 0 P P P P I 0 I 0 I I P 0 I0 I uF 0 0.uF ased on EP Wasp of Sheet: /Note ecoder/ File: Noteecoder.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable 0.uF Rev:.0 Id: /0

8 Note ividers Glide ircuits NOTEIV 0 dditional decoupling caps LK LR L I 00 INH P P P P P P P P 0 P P P P P P P P SL ZERO 0K R PP P 0 SigIn R ZOUT I VOin IN R FOUT SFout 0 P R 0K 0K R.uF nf M Log VR 0.uF 0.uF GLIE_ NOTEIV LK LR L I 00 INH P P P P P P P P 0 P P P P P P P P P P P P P P P P SL ZERO PP P 0 SigIn R ZOUT I VOin IN P FOUT R SFout 0 M Log VR R 0K 0K R.uF 0K R 0.uF 0.uF nf GLIE_ ased on EP Wasp of Sheet: /Note ivision/ File: Noteivision.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable Rev:.0 Id: /0

9 GLIE_ GLIE_ P MR nf P MR p nf p I 0 d 0 I 0 d I 0 I 0 R K R K R 00K R 00K S S 00 FT 00 FT Headers for Enhanced waveform daughter P which implements a PWM modulated waveform like the one in the Gnat 0nF I0 nf M R nf I0 0nF R M p p d 0 d I 0 S R K R 0K R 0K R 0K R M I 0 FT S R K KEYOR_VOLTGE Saw Enhance P0 Enh R K FT K 0K R 0K R 0K R M R0 R Saw Enhance.nF ased on EP Wasp of Sheet: /Waveform Generators/ File: Waveforms.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable I 0 0.nF P Enh I0 0 I 0 I nF Saw Square Saw 0.uF 0K R0 VR 0K Log.uF 0K R0 0.uF R 0K I Enhance 0K R Enhance R 0K 0.uF 0 Width M Log VR K R0 I K R 0 S OS S OS VR 0K Log VR0 0K Log EXT_UIO R or R0 may need adjusting depending on amplitude of ramp R 0K R00 0K I 0K R Rev:.0 Id: /0 0 Pulse MIX_OUT

10 0.uF V_IN Jasper Synth 0 EP Wasp Synthesiser lone PR 0K 00K R R 0K 00nF V Extra resistor to bias V Envelope V higher. Improves repeat and sustain. If V doesn't close fully, increase this resistor or leave out completely. K R K R0 K R K R K R attery negative is disconnected when jack inserted V_ENVELOPE 00 J V If using P battery holders Jumper the two connectors P & P K R I R 0K Uses LM00 instead of 00 K R Vout 0K Log Properly terminate unused half of 00 I attneg PwrToSwitch TT Uses Omeg Eco pots with PST switch VR0 PWR/Volume TT attery holder I P TTN P R 0 0.uF V I Power Input and Regulator LineOut N00 V I PwrToSwitch' VR0 PWR/Volume Link Pwr S Optional power over pin Link connector LINE OUT Mix to allow stereo out R K R K J LineOutT LineOutR mpin R K LINE 0K R PWRswitched LinkPwr pf mpin' 0K R Led LINKPWR 0.uF L E PWR_FLG V V Pwr Gnd Gain ypass Gain PWR_FLG.uF POWER MP I 0uF mpout MP0 VI 0 R nf VO I 0uF LSout 0.uF R.uF PhonesR 0 0.uF LSneg J V 0.uF few extra decoupling caps SP L.S. PHES V 0uF VSS External udio Input EXT UIO J K R K R 0nF Spare inverters on I to mix a stereo input and provide buffer and variable gain. If jack not plugged, ext audio input is grounded by switches on liff socket. R K I 0 00 R K V VR 00K log 00 0 R0 I 0 0 uff_in Twin shielded cable to VR Only connect signal wires to 00K log pot uff_out 00 uff_in ExtudioInput uff_out ased on EP Wasp of Sheet: /V and Power/ File: PowerV.sch Title: Jasper Synth 0 Size: ate: 00 Kiad E... kicad.0.stable 0uF ap for additional bypass filtering on LM pf cap required to stop LM oscillating at about 00kHz M P mounting holes P P P P0 P P P P Ground pin for grounding a metal control panel Rev:.0 Id: 0/0