1. Connect the solderless prototype with each other. Position them so that the joints are on the right and down hand side (in the below pictures I used yellow prototypes, but the color does not matter).

2. Then assemble the jumpers. (blue in the picture, but the colour does not matter). Pay attention to the jumper on the left G2-G3 connecting plate and F9-E9 on the right side prototype. The insulation between the relays should be removed between the relays (only cable), because its larger diameter does not allow proper mounting of the relays described in the further part of the manual.

Upload and upgrade of firmware

 The software was created in the Arduino  environment, which is an open platform for Atmel micro-controllers. Upload software can be completed before or after module installation, as the USB port can be accessed on the top of the box. Please note that: after assembling the device and connecting it to the PC, disconnect the power supply first.

freePEMF user manual

  This freePEMF page is a free and open-source material decribing the PEMF low-frequency pulsed electromagnetic field therapy device. It has been designed for people who don't necessairly have the electronic background and could put it together by themselves. Amongs other sources, this device has been based on A. Meyers book "PEMF - The Fifth Element of Health". More articles on this and similar topics can be found at page

Device parameters:

  • Output frequency: 0.01 - 60 Hz; Software version mini-freePEMF 2018-10-28 and newer: 61Hz - 16kHz ***
  • Communication socket with PC: miniUSB;
  • FLASH memory for user's therapy script: 1000 bytes:
  • Polarity change: yes - realized with a relay every 2 minutes. Software controlled;
  • Minimum output load resistance: 6 ohms. Output current: 2 A;
  • RMS magnetic induction and impulse: adjustable by coil selection;
  • 14 V power supply;
  • Working time with 50 ohms load: about 3 hours;
  • Signal type: square, default 50/50% fill, program controlled 1-99%

(***) Frequencies above 60Hz should only be used with a specially made coil e.g. yellow, orange with a 100 ohm resistor or a mat. They are used in the bioresonance and informotherapy. Above 60Hz are supported only the frequencies marked in this document in green color.

bioZAP language

 bioZAP script language is used to edit and support user-generated therapy. bioZAP has been implemented in open, free devices based on the ARDUINO platform built to electric current or magnetic and electromagnetic pulsed field therapy. Also alows make other applications eg biofeedback meditation, exteriorization and bioresonance.

Users can exchange their therapy scripts created on the website, modify them themselves and upload them to devices. 

Coil assembly

How to make a coil
The below instruction describes how to create and assemble green coil made of 44 scrolls, 12 cm radius. the resistance equates to 50 ohm. Other coils can be constructed in the similar fashion, however their radius will vary. Therefore a new pad to construct coil will be required.

Mat making

Free-PEMF and multiZAP devices support sets of coils that allow the use of electromagnetic field therapy of low intensity, similar to the one found on Earth.
Additionally, multiZAP allows the use of the mat in case of complex bio-resonance therapies. In this case, no reduction resistor is used, and field strength might be slightly stronger.

To make a mat we will need the following materials:

Frequency list

Useful literature to create your own therapy scripts for active and passive bioresonance. Links lead you into the books descriptions in Amazon store. Fragments were published for some of them. (click Loook inside). Also look at files placed below article.

Coil choosing - theory

 Devices such as freePEMF or multiZAP cause the body to the pulsating low frequency electromagnetic field generated in the coil. We call this magnetotreapy. The electromagnetic field is most easily described as a system of two fields: an electric and a magnetic field. This is illustrated in the figure below:

Składowe pola elektromagnetycznego

E - electric field;

B - magnetic induction.

The coil should be selected according to the following criteria:

  • the induction stream produced,
  • the size of the construction taking into account the dimensions of the selected part of the body.