LoFi Looper is an ISD 1820 based eurorack sampler/looper with the ability to be abused as a VCF, mic/line input as well as the ability to cascade across multiple looper modules for complex sequencing.
NEWS! Version 3.22 is confirmed to work with all the features!
I will start taking orders via email. Please include your state/country and paypal email to send a request.
Price for boards and faceplate: $15 USD + shipping
Price for assembled module: $60 + shipping
Contact the2dcour@hotmail.com
Version 3.22
Fixed Latch auto reset - should be fully functional now
Added 1k resistor on output for unity gain
Version 3.21
Mostly bug fixes. Added optional circuit to latch RECORD to ON. This will also automatically UNLATCH at the END OF RECORDING. Yay!
Version 3.2
Mostly bug fixes on the logic of CD4053 and Stereo Jack for MICSW RING->TIP swap.
Version 3.1
Reset Loop input - can use 1-10v trigger/gate to control loop reset or hold power off
Fixed stereo jack configuration, added alternate jack style
CD4053 now runs at 5v to use 5v control logic
I am proud to announce version 3.0 Upgrades include:
CD4053 controlled switching (Record button disables trigger and gate input, line input disables mic input)
Fixed diodes to block output on input jacks when pressing buttons
Fixed orientation of 10 pin headers so components can be on proper side of boards.
Removed Hot input
Removed mic switch in favor of CD4053
Added loop switch (can self loop and output a loop trigger to the next module without a signal multiple)
Input attenuation and bufferred on previously unused tl072 op amp
This is a free to use module based on the isd1820 datasheet and a few different diagrams I found around the internet.
Please feel free to use the PDFs provided below. Build guide and documentation coming soon.
BOM - 3.22
Main Board Schematic
Control Board Schematic
