MultiGeiger
MultiGeiger copied to clipboard
ecocurious2
multigeiger soldering for dummies :-)
Polarity / orientation matters
- the parts will be put on the side where the print is, first the small parts, then larger ones
- soldering happens on the other side (except the SMD transistor)
- diode polarity matters! ring side == where the arrow of the diode symbol points to. black cases have white ring, transparent or white case have black ring.
- 100uF (black cylinder) is a electrolytic capacitor, polarity matters (long wire == plus, also see
-mark on minus side). do not solder vertically, but bend wires 90 degrees, so it lies flat on PCB. - the heltec wifi kit 32 usb connector is above the piezo.
- the fuse holder for the plus pole of the tube is asymetric! check fit of tube before soldering.
- geiger tube plus side: fuse holder on geiger pcb, minus side: long wire with fuse holder.
Polarity does not matter
- the smaller (red block) capacitors are foil type
- coil (black, ferrite core)
- resistors
- piezo
soldering the male connectors of ESP32 board
- maybe this is already done, see if the ESP32 board has 2 pin rows. if not:
- upper side of ESP32 is where the display is
- insert short end of male connectors from below
- you can use the female connectors to have the male ones correctly aligned
- be careful when soldering on the upper side of the ESP32 close to the flat plastic display cable, don't get close to it with hot soldering tip
- now solder connector, start with first and last pin, make sure it is fully "in"
truncating the female connectors
- into this connector, on the geiger PCB, we will later insert the ESP32 microcontroller
- for heltec wiki kit 32, one usually needs to get rid of 2 female connector "pins"
- to do that use a small wire cutter and cut through the middle of the 2nd connector pin (not close to 3rd)
- that way the 3rd one will still be healthy (maybe not pretty end)
- point the not-pretty end to the end of the geiger pcb, not to the big piezo (might not fit)
- you can use the ESP32 male pins to have the female corresponding connector correctly aligned on the PCB (if it fits now, it will fit later)
- now solder connector, start with first and last pin, make sure it is fully "in"
mind the high voltage
- do not get anything conductive close to the high voltage end of the PCB or the plus side of the tube - no fingers, no usb cables, no computer, no water / moisture, nothing.
- the (preferably black) wire going from GND on the PCB to the fuse holder on the minus side of the tube is harmless.
Jürgen writes (has almost written) detailed instruction to build the hardware.
I don't see anything?
If one wants to work collaboratively without wasting resources to doing the same work twice, one should not work "in the dark".
https://github.com/ecocurious/MultiGeiger/tree/master/docs/Bauanleitung
TODO: compare the stuff above against the linked docs, update the docs as needed, close this issue.
@ThomasWaldmann Now the Bauanleitung is also on ReadTheDocs, maybe you want to add your text there?
