DSKY Parts

Item Qty Description Manufacturer Where pcs Price Link
PCB v1.0D 1
S&T Geotronics in kit
3D Printed parts 1
S&T Geotronics in kit

Laser Cut Button Caps 19
S&T Geotronics in kit

3 Segments STG 3
S&T Geotronics in kit

Frosted Window 2
S&T Geotronics in kit

Arduino Nano 1 Nano V3.0 Mini USB ATmega328 5V 16M 100% ORIGINAL FTDI FT232RL For Arduino Note 1
Ebay 1pcs 4,64 € http://r.ebay.com/b44GZm
VA RTC 1 DS3231 AT24C32 Integrierte Schaltkreise Hoher Präzisionstakt IIC Modul Speicher Datasheet Ebay 1pcs 1,16 € http://r.ebay.com/VCNdWJ
IMU 1 GY-521 3 Axis Accelerometer Gyroskop Modul 6 DOF MPU-6050 Modul AIP Datasheet_1
Ebay 1pcs 1,04 € http://r.ebay.com/gkJyhs
Buck StepDown 1 DC-DC Buck Converter Adjustable Mini Step-down Module 1.8V 3.3V 5V 9V 12V 2A
Ebay 1pcs 1,33 € http://r.ebay.com/Isvp59
SKM53 GPS 1 GPS Modul MT3329 SKM53
Skylab UART Serial GPS Module For Arduino uController with Breakout Board & Pins
Datasheet Ebay 1pcs $23,99 http://r.ebay.com/MwcfUB
Line Leveler 1 5V-3V 2-Channel I2C IIC Level Converter Module 16 x 12mm for Arduino
Ebay 1pcs 1,10 € http://r.ebay.com/DmQtQR
Reed Switch 1 1X DG1A05BWD Reed Relays SPST-NO 0.5A 5VDC 500Ohm Thru-Hole Note 2
Ebay 1pcs 5,00 € http://r.ebay.com/QSCq4f
DFPlayer Mini 1 TF Card U Disk Mini MP3 Player Audio Voice Modul Arduino DFPlayer Tafel New Datasheet Ebay 1pcs 1,52 € http://r.ebay.com/Edda0J
1" 16Ohms Speaker 1 1"inch Neodymium full-range speakers Loudspeaker 2~5 watts 16 Ohms
Ebay 2pcs $4,66 http://r.ebay.com/9aexvO
6 AA Battery Holder 1 Keyes 6 Six Cell AA Battery Holder Box Battery Case Mit Lead Wire TS
Ebay 1pcs 1,62 € http://r.ebay.com/Wd6phJ
Wire Terminal 1 10 X PCB 2 Pin steckschraube Terminal Block Stecker 5,08mm Pitch Through Hole
Ebay 10pcs 1,00 € http://r.ebay.com/b0iDrp
On/Off Switch - A 1 5 X Auto 12 V ON / OFF Runde Rocker Boot Kippschalter Druckknopf Note 3 Ebay 5pcs 1,00 € http://r.ebay.com/Lwe5k1
On/Off Switch - B 1 5 PCS ROUND ROCKER SWITCHES 12V ROUND TOGGLE ON OFF 12 VOLT CAR SNAP IN SWITCH Note 3 Ebay 5pcs 4,99 $ http://r.ebay.com/TlCOK9
Maxim7219 4 5Stk. Neu IC MAXIM MAX7219CNG Max7219 LED Display-Treiber 8 DGT DIP-24 Note 4
Ebay 5pcs 5,68 € http://r.ebay.com/5COplD
Sockets 24pins 4 20 Stücke 2.54mm Pitch 24 Pin DIP IC Adaptor Sockets Steckdose Narrow Qualität
Ebay 20pcs 5,11 € http://r.ebay.com/fK7cIX
Female Pins 3 20PCS 1x8 Single Row 8 Pins PCB Socket Female Header 2.54MM
Ebay 20pcs 1,05 € http://r.ebay.com/X1D3V2
Female Pins 2 10Stks NEW Single Row 1X15 15Pin 2.54mm Female Pin Socket connector
Ebay 10pcs 1,00 € http://r.ebay.com/FR7uH7
Female Pins 1 20PCS Single Row 6-Pin 1x6-Pin 2.54mm Spacing 6P Female Socket Header
Ebay 20pcs 1,58 € http://r.ebay.com/xZruzZ
Female Pins 4 50PCS NEW 1x4 Single Row 4 Pins Pitch 2.54mm PCB Socket Female Header
Ebay 50pcs 1,15 € http://r.ebay.com/ssAYql
NeoPixel RGB 18 Adafruit WS2812B 5050 RGB LED with Integrated Driver Chip - 10 Pack Adafruit
PartNr: 1655
Amazon 2*10pcs 16,20 € https://www.amazon.de/dp/B00SK8LY9A/ref=cm_sw_em_r_mt_dp_U_OIMSAbYS0NE5K
LED PushButtons 19 5pcs 12*12*7.3 White Tactile Push Button Switch Momentary Tact LED TSCA
Ebay 5*5pcs 7,87 € http://r.ebay.com/kDC8vE
10uF Capacitors 10 10Pcs Dip Tantal Kondensator 10Uf 106 25V 2.54Mm Ic
Ebay 10pcs 2,15 € http://r.ebay.com/xPhlDZ

7 Segments – A 21 10 Stück LED 7-Segment Ziffernanzeige 12,7mm 0,5" grün 525nm gem. Kathode Note 5
Pure Green!
Ebay 30pcs 27,80 € http://r.ebay.com/618PiL
7 Segments – B 21 22 PC 1 Digit 0.56" GREEN 7 SEGMENT LED DISPLAY COMMON CATHODE 10 Pin 0.56 inch
Ebay 22pcs 5,75 € http://r.ebay.com/oC6IN3
7 Segments – C 21 Kingbright SC05-11GWA LED-Anzeige 7-Segment grün, Zeichenhöhe 12.7mm 10 mcd Datasheet
Or Mouser
21pcs 18,74 € https://de.rs-online.com/web/p/led-displays/2358799/
7 Segments – D 21 1 digital 0.5 inches Green 8 segment led display 5101AGG/5101BGG 10pcs Datasheet
Order 5101AGG for a common cathode version

Pure Green!
AliExpress 30pcs $18.84 https://de.aliexpress.com/item/1-digital-0-5-inches-green-digital-Common-anode-BG-20pcs-Free-Shipping/32701648202.html

15 Ohms Resistor 1

100 Ohms Resistor 1

470 Ohms Resistors 20

1K Ohms Resistors 22

10K Ohms Resistors 4

100K Ohms Resistors 3

AA Batteries 6

MicroSD Card 2Gig 1

Note 1 Most Nano clones have a CH340 chip installed, which could cause several driver issues. So spent some bucks more and look out for a Arduino Nano with FTDI chip for a hazzle free programming
Note 2 This Reed Switch is recommended from S&T Geotronics.
Please note, that the selected part has a PROTECTING DIODE embedded, which protects the Arduino output from damage due to reverse currents when switching off the relay.
Furthermore this relay has a magentic shielding.
There are other and probably cheaper Reed Switches available in SIP package, which would fit mechanically and technically, but only use a replacement, if it has an embedded protection diode and magnetic shielding.
Note 3 Switch - B is the part recommended from S&T Geotronics. There are huge shipping costs to Europe ($14). The mechanical data is identical to Switch - A, which will fit either, is much cheaper and has no shipping costs.
Note 4 Be aware, that ALL MAX7219, which cost less than approx. $5-6 PER PIECE are fakes. If you want to go for a original MAXIM device, you have to purchase from Digikey, Mouser, Farnell,….

Note 5
All selected displays have the same pinout and the same part dimension of 19 x 12,7 x 8mm.
The cheapest display B) is from Ebay (22pcs for 5,75€ incl. Shipping!). This display has a sligthly larger segment size of 0,56 inch, which is 0,06inch higher than the other two. According to S&T Geotronics this will fit either.
The Kingbright part C) is a well known brand, but this display is not so bright as A) or D) (10mcd vs. 82Mcd/220mcd). Changing the current resistor on the MAX7219 might help to increase the brightness to a max…

Green is not Green! Due to a different wavelength, the green color is quite different for these displays.
Only Display A and Display D have a pure green color (wavelength = 525nm/515nm), whereas B) and C) have a kind of yellow-green color (wavelength 570nm).

Here is a comparison of Display A, B and C

SO BE CAREFUL AND LOOK FOR A DISPLAY WITH A PROPER COLOR! The wavelength should be in the range of 515...530nm
If you can‘t find out the wavelength, then have a look at the „Forward voltage“ (Vf) of the display. Due to a different material used to generate the color (Pure Green: InGaN vs. Yellow-Green GaP), Pure Green Displays have a forward voltage of approx. 3.0V whereas the (Yellow-)Green displays have a forward voltage of 2.0-2.2V.