Lithium Grim Merlin Building Instructions

property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement is implied. 2 Table of contents Components ............................................................................................................................................ 3 PCB layout ............................................................................................................................................... 3 Bill of Materials........................................................................................................................................ 4 Building sequence ................................................................................................................................... 5 Modifications ........................................................................................................................................... 6 Softclipping .......................................................................................................................................... 6 Additional diodes................................................................................................................................. 6 Diodes and Op amp ............................................................................................................................. 6 Feedback loop ..................................................................................................................................... 7 Lovepedal OD11 ........................................................................... Fout! Bladwijzer niet gedefinieerd. Off board wiring ...................................................................................................................................... 9 Effects loop ............................................................................................................................................ 12 Troubleshooting .................................................................................................................................... 13 Schematic .............................................................................................................................................. 14 Read this entire manual thoroughly before you start building the effect! Especially the modification part. Decide before building the effect which version and mods you want to try so that you do not need to desolder parts later. Last update: 20-08-2019 Changelog: V1.0 : Initial version V1.1 : Added J1, small silkscreen corrections, smaller PCB. Added OD11™ and Zen drive™ configuration

property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement is implied. 3 Components Name Value Comment Name Value Comment C1 47n MKT/SMF R1 2M2 1% metalfilm C2 100p Silver mica R2 510k 1% metalfilm C3 39n MKT/SMF R3 3k3 1% metalfilm C4 1u MKT/SMF R4 3k3 1% metalfilm C5 10n MKT/SMF R5 1k5 1% metalfilm C6 1u MKT/SMF R6 3k3 1% metalfilm C7 47u Electrolyte 16V+ R7 3k3 1% metalfilm C8 47u Electrolyte 16V+ R8 8k2 1% metalfilm C9 150n MKT/SMF R9 10k 1% metalfilm C10 4n7 MKT/SMF R10 330R 1% metalfilm D1 1N4148 R11 Jump D2 1N4148 P1 A500k/A1M Gain D3 1N4148 P2 A10k Boost D4 1N4148 P3 A50k Bass D5 1N4001 P4 A10k Boost Tone IC1 JRC4559 P5 A50k Treble SW1 3PDT Boost footswitch P6 A10k Volume SW2 SPDT Soft Clipping SW3 DP3T (ON/OFF/ON) Additional diodes J1 Jump Tim/timmy SW4 DP3T (ON/OFF/ON) Feedback loop PCB layout A=Log, B=Lin, C=Rev. Log

property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement is implied. 4 Bill of Materials Capacitors Value Amount Type Rating 4n7 1 MKT or SMF 16V or higher 10n 1 MKT or SMF 16V or higher 39n 1 MKT or SMF 16V or higher 47n 1 MKT or SMF 16V or higher 150n 1 MKT or SMF 16V or higher 1u 2 MKT or SMF 16V or higher 47u 2 Electrolyte 16V or higher 100p 1 Silver Mica or Ceramic Disc 16V or higher Diodes Value Amount Type 1N4001 1 1N4148 4-7 minimal 4 maximum 7 (see modifications section) LED 1 Red 3mm LED 1 Orange 3mm (only for Tim™) IC Value Amount Type JRC4559 1 Socket using a DIP-8 socket Resistors Value Amount Type 330R 1 metal film 1% 1k5 3 2 for LED's metal film 1% 3k3 6 metal film 1% 8k2 4 metal film 1% 10k 2 metal film 1% 510k 2 metal film 1% 2M2 2 metal film 1% A10K 3 16 mm Alpha pot A50K 2 16 mm Alpha pot A500K or A1M 1 16 mm Alpha pot A500k for Tim™ A1M for Timmy™ Switches Value Amount Type 3PDT 2 Footswitch, Timmy™ uses only 1 DP3T 2 Type ON/OFF/ON OPTIONAL see modifications section DPDT 2 OPTIONAL see modifications section SPDT 1 OPTIONAL see modifications section

property of their respective owners who are in no way associated or affiliated with the author. No cooperation or endorsement is implied. 5 Building sequence Soldering this board can be very complicated for some people since the solder pads are very close together. Use a magnifying glass to make the job easier. If you want to experiment with other diodes then you could socket them instead of soldering them to the board. You’ll need a 20 SIL, break off the sockets and solder them to the board. This board is primarily inspired by the Paul Cochran Tim™ and Timmy™, but with v1.1 you can also build a Lovepedal Zen Drive™ or OD11™ (which all are themselves based on the tube screamer… yes, nothing is original) using only this single board! If you want to recreate the Tim™ then solder all components. SW3 and SW4 are optional mods (see modifications section). If you want to recreate the Timmy™ then do not solder SW1, C9, C10, R10, P2 and P4. For SW3 you can choose between the standard SW3 or the original SW3a and SW3b (see modification section). First decide which pedal you want to build. When making the Tim™/Timmy™ you must short J1 with a spare piece of lead wire. Do not short J1 for the OD11™ and Zen Drive™. R11 is only used for the Zen Drive™, short it for the OD11™,Tim™ and Timmy™. Now solder the diodes and then the resistors. Again, If you want to socket the diodes then skip them and instead solder the sockets for the diodes. Note: Diodes are fragile!! Do not expose them to heat for too long or they’ll break. Do not blow on your solder in an attempt to cool it down. That will possibly result in a bad join that might corrode! Solder the IC socket next and then the small SMF/MKT capacitators, then the electrolytes, then the 1uF SMF/MKT and finish with the C2 silver mica. Place the IC (and diodes if socketed) and you are almost ready to rock. Besides the components mentioned in the table on the page 4, you will need: • 2 input jacks. 2 mono jacks if you are not going to use a battery but only the 9V adapter. 1 mono (for output) and 1 stereo jack (for input) if you will be using both a 9V battery and the 9V adapter. If you also want to incorporate the effects loop you’ll need an extra mono jack and a switching mono jack (see effectsloop section). • 2 x 3PDT footswitch (9 pins) if you are building the Tim™ or only 1 if you are building the Timmy™. • 2,1mm DC jack (isolated). • 9v battery clip (optional). • 22 gage stranded hook-up wire. • 2 x LED if you are building the Tim™ or only 1 if you are building the Timmy™, OD11™ or Zen Drive™ • Hammond 1590BB case (or similar) in your favorite color for the Timmy and a Hammond 1590XX (or Hammond 1590DD) for the Tim™.