Table of Contents
Advertisement
Quick Links
My Little Mixer V1.1 – Assembly Guide
Thank you for purchasing this module! This is an easy build but with some surface mount parts
including precision integrated circuits. Some of the pads are quite small and you will need a chisel
tip or screwdriver tip soldering iron, fine solder and the skill to solder these tiny joints. If you have
not soldered SMD before, we recommend watching some of the many YouTube guides. Our
favorite: EEVBlog.
The module is designed and sized for Eurorack systems. You will need a 16-10 pin eurorack power
ribbon connector with –12/0/+12 which is connected to a synth power supply.
Follow the parts lists, these instructions and the PCB silkscreen text to build the module.
There are components installed on BOTH sides of the boards. Please ensure that you place the
components on the correct side. When referring to the TOP of a board we mean the side with the
pmF logo. The BOTTOM has no logo.
You may need to clean up the board edges with wire cutters and/or a file to remove the remains of
the tabs from the fabrication process. This is particularly important for the edges containing the
jacks. These edges will need to mate flush with the front panel.
You should follow the order of assembly as described below since some components will be
soldered underneath other components. The module can be customized during assembly to
provide:
1) Full time AC coupling, DC coupling or both
2) Switched or non-switched inputs
Page 1 of 8
Advertisement
Table of Contents
Related Manuals for PMFoundations My Little Mixer
Summary of Contents for PMFoundations My Little Mixer
- Page 1 My Little Mixer V1.1 – Assembly Guide Thank you for purchasing this module! This is an easy build but with some surface mount parts including precision integrated circuits. Some of the pads are quite small and you will need a chisel tip or screwdriver tip soldering iron, fine solder and the skill to solder these tiny joints.
- Page 2 1. Clean board edges with wire cutters and/or file. 2. Board prparation Apply flux to the SMD pads. Tin one pad of each SMD footprint with a SMALL amount of solder. For the ICs, apply a tiny amount of solder to two opposite corner pins. 3.
- Page 3 4. ICs Install the ICs with the correct orientation. Align the dot or other marker with the corresponding mark on the board. If you solder the ICs the wrong way round, they will explode and render the board useless. Position on the footprint and heat the pin and tinned pad in one corner until the part is attached.
- Page 4 5. Electrolytic capacitors If the mixer will be full time DC coupled, do not purchase or install C6. C9 and C10 improve the smoothing of the power supply to the board but may not be necessary. Install these on the TOP. Make sure you orient these capacitors correctly. The lead marked with a + needs to be placed on the pad that has the “+”...
- Page 5 Page 5 of 8...
- Page 6 7. 2 pin jumpers If the mixer will be full time DC coupled, put a wire link in each of the 5 jumper positions and solder. If the mixer will be full time AC coupled, do not install anything in the 5 jumper positions. If the mixer will be swapped between AC and DC couped, use a proper two pin jumper and removable shunt in each position.
- Page 7 9. 3.5mm Jack Sockets Install the jacks on the TOP and the BOTTOM and fully solder each one as you install it. Do not bridge the contacts to nearby components or burn the jack bodies or other components. These are tightly packed and the iron must be threaded in carefully. Now attach the panel to the jacks and pots and solder all the pot pins.
- Page 8 4. Install the knobs. Page 8 of 8...
Need help?
Do you have a question about the My Little Mixer and is the answer not in the manual?
Questions and answers