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bom.txt
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bom.txt
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Bill of Materials (v14)
Prices are from digikey, and in quantity 100.
---------------------------------------------
Required:
Part Value Device Package Library DigiKey Price (qty 100)
C1 10uF CAP_POLPTH2 CPOL-RADIAL-10UF-25V SparkFun 493-5946-ND $0.08020 (.06" lead spacing, 6mm tall)
C2 0.1uF CAPPTH CAP-PTH-SMALL SparkFun 478-5741-ND $0.09450 (.100" lead spacing)
D1 3V3 DIODE-ZENERPTH DIODE-ZENER SparkFun 1N5226BFSCT-ND $0.072
D2 3V3 DIODE-ZENERPTH DIODE-ZENER SparkFun 1N5226BFSCT-ND $0.072
R1 68 RESISTORAXIAL-0.3 AXIAL-0.3 SparkFun CF14JT68R0CT-ND $0.02190 axial 0.3"
R2 68 RESISTORAXIAL-0.3 AXIAL-0.3 SparkFun CF14JT68R0CT-ND $0.02190 axial 0.3"
R3 1.5K RESISTORAXIAL-0.3 AXIAL-0.3 SparkFun CF14JT1K50CT-ND $0.02190 axial 0.3"
U1 TINY85P TINY85P DIL08 atmel ATTINY85-20PU-ND $0.72 (instead of U2)
or
U2 TINY861A TINY861P DIL20 atmel ATTINY861-20PU-ND $1.75 (instead of U1)
Recommended I/O:
Part Value Device Package Library DigiKey Price (qty 100)
LED1 GREEN LED3MM LED3MM SparkFun 754-1217-ND $0.07150 3mm T1 green
LED2 RED LED3MM LED3MM SparkFun 754-1218-ND $0.07150 3mm T1 red
R4 470 RESISTORAXIAL-0.3 AXIAL-0.3 SparkFun CF14JT470RCT-ND $0.02190 axial 0.3"
R5 470 RESISTORAXIAL-0.3 AXIAL-0.3 SparkFun CF14JT470RCT-ND $0.02190 axial 0.3"
SW1 USER TAC_SWITCHPTH TACTILE-PTH SparkFun 450-1652-ND $0.1114 6mm
Optional:
Part Value Device Package Library DigiKey Price (qty 100)
H2 AVR_SPI_PRG_6PTH AVR_SPI_PRG_6PTH 2X3 SparkFun 609-3218-ND $0.1778
JP1/J1 RESET/POWER HEADER 1x4, 1x4ish S1012EC-08-ND $0.16950
U1 socket AE9986-ND $0.1196
U2 socket AE9998-ND $0.1911
X2 USB mini-B WM17115-ND $1.1038
U3 497-7288-ND $0.21000
Headers, to make a stackable or arduino-compatible board:
Part Value DigiKey Price (qty 100)
H1 1x6 609-3558-ND $0.6796
1x8 609-3559-ND $0.8791
1x8 609-3559-ND $0.8791
1x10 609-3550-ND $1.0657
(Note that digikey's prices for headers are quite steep.
SparkFun sells all four for $1.20 (quantity 100) at
https://www.sparkfun.com/products/11417
which is substantially less than DigiKey, even though
SparkFun is selling at retail markup. Presumably a large
deployment could get an even better wholesale price.
The DigiKey headers are also not stackable.)
----
Paste-able BOM for the required+recommended parts ('861 version):
(use https://ordering.digikey.com/registereduser/TextFileImport.aspx)
Required: (pick 1 of U1/U2)
1,493-5946-ND,C1 10uF
1,478-5741-ND,C2 0.1uF
2,1N5226BFSCT-ND,D1 D2 3.3V Zener
2,CF14JT68R0CT-ND,R1 R2 68 ohm
1,CF14JT1K50CT-ND,R3 1.5k ohm
1,ATTINY85-20PU-ND,U1
1,ATTINY861-20PU-ND,U2
Recommended:
1,754-1217-ND,LED1 T1 Green
1,754-1218-ND,LED2 T1 Red
2,CF14JT470RCT-ND,R4 R4 470 ohm
1,450-1652-ND,SW1 6mm