---- dataentry Projekt ---- Projekt_url : https://wiki.muc.ccc.de/geigercounter:start Name : PiGi Geigercounter Beschreibung_wiki : Sammelbestellung: Board & Bauteile für PiGi Links_urls : Bilder_imgs : Source_url : Lizenz : -- Beteiligt : 9R, Termine_page : Status_ : läuft Kategorie_tags : Hardware, Software Verwandtes_tags : Labor ---- =Geigercounter ==Eckdaten Preis für Board & einen einzeln teuer zu beschaffenden Poti: ~1,70€ ==weitere Kosten ~10€ für benötigte Bauteile >10€ für eine GeigerMüllerZählrohr Mit ~30€ einsatz sollte sich damit also ein einfacher Geigerzähler bauen lassen. ==Arbeitsaufwand: anfängerfreundliches SMD-Löten ==Was kann das Ding: Das Board erzeugt die zum Betrieb des GMZ nötige Hochspannung & gibt bei detektierter Strahlung eine falling edge aus die von RasPi, Arduino, ESP* oder sonstwas weiterverarbeitet werden kann. Details auf der [[https://apollo.open-resource.org/lab:pigi:hardware|Projektseite]] =kit ==bag content ^ pc ^ item ^ content ^ | 1 | GM-tube type SBM-20 | [[http://www.gstube.com/data/2398/]] | | 1 | board | - | | 1 | green bag | C1-4, T1-3, IC1, L1 | | 1 | clear bag | R1-9, J1 | {{:geigercounter:pigi_components1.1.png?direct&400|}} ==build Below is a list of all parts with their marking and recommended solder order. :!: Before you start building it, please make sure :!: # no parts are missing (compare content of bags in your kit to the list above) # you have read and understood [[https://apollo.open-resource.org/lab:pigi|the documentation]] * especially the [[https://apollo.open-resource.org/lab:pigi:hardware|hardware section]] ===bottom ====part ^ # ^ V1.1 ^ Part/Value ^ Package ^ Marking ^ Notes ^ | 1 | D2 | MMSD4148 | | black belt | mark facing towards C4 | | 2 | C4 | 1nF | 0805 | green | | | 3 | R5 | 330 ohms | 0805 | orange | | | 4 | R4 | 100k | 0805 | light green | | | 5 | R6 | 220k | 0805 | red | don't confuse with R1 | | 6 | R1 | 1k | 0805 | pink | don't confuse with R6 | | 7 | R9 | 27k | 0805 | yellow | | | 8 | IC1 | TLC555QDRQ1/ICM7555 | SOIC-8 | 8 pins | Case mark facing towards R6 | | 9 | T2 | MMBT4401 | SOT-23 | black package , 3 pins | | | 10 | J1 | 0 Ohm | 0805 | yellow/violett | can be solder bridged instead of placing part | {{:geigercounter:pigi-pcb1.1_bottom.png?direct&400|}} :!: In the picture above the J1b is closed. This routes the output signal to Pin 7 (GPIO4) on the RaspberryPi. Alternatively, you can close J1a, which would output the signal to Pin 11 (GPIO17) ===top ^ # ^ V1.1 |^ Part/Value ^ Package ^ Marking ^ Notes ^ | 1 | C5 || 330pF | 0805 | red/green | | | 2 | R7 || 1.5k | 0805 | grey | | | 3 | R8 || 100k | 0805 | light green | default - see [[#signals]] for alternative values | | 4 | T3 || MMBT4401 | SOT-23 | black package, 3 pins | | | 5 | C1 || 220uF/10V LowESR Aluminium Electrolytic Capacitor | see BRD | loose | black mark towards open hardware logo (=rounded corners towards T3) | | 6 | C2 || Vishay MLCC 10nF/1kV | 1206 | black package, 2 lightbrown parts | | | 7 | C3 || Vishay MLCC 10nF/1kV | 1206 | black package, 2 lightbrown parts | | | 8 | R2 || KOA Thick Film 1M 0.25W 0.5% | 1206 | black | | | 9 | R3 || KOA Thick Film 4.7M 0.25W 1% | 1206 | violet | | | 10 | D1 || Vishay BYGM23 Fast Recovery Diode 1.5A/ 1000V/ 75ns | DO-214AC (SMA) | clear package | mark towards R2 | | 11 | T1 || STN0214 Bipolar NPN 1k2V | SOT-223 | black package | | | 12 | L1 || Murata Shielded Inductor 15mH | see BRD | pink foam, 4 pins | algin dot mark with dimple (above "1") | | 13 | R10 || Bourns Trimmer 100R | see BRD | blue trimmer | screw towards T1 | | * | --- | R10a | optional, with a fixed value instead of R10 | 0805 | - | | | 14 | H1 || [[http://www.adafruit.com/products/1112|Stacking Raspberry Pi Header]] | 2x13 2.54mm | - | optional - not included in the kit | {{:geigercounter:pigi-pcb1.1_top.png?direct&400|}} ==calibration ===reference [[http://www.umweltinstitut.org/themen/radioaktivitaet/messungen/aussenluft-muenchen.html|Aussenluftstrahlung München]]